Recent weather observations from Maidenhead

January 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 4 08 09 02 97 -3.5 65 -0.6 -4.0 -6.0 -1.2 -0.3  0.9  2.2  2.8  5.3 5  0  0.0  4.3 500000 1024.0  0.0 24.0  0.0
02 6 02 02 02 96 -5.0 86  0.4 -5.3 -9.1 -1.8 -1.3  0.5  1.9  2.5  5.1 3  0  0.0  5.9 000000 1023.5  0.0 20.6  0.0
03 8 06 09 02 97 -2.0 79  0.1 -5.0 -7.5 -1.2 -1.1  0.2  1.7  2.4  4.9 3  0 tr    0.0 000000 1016.0  0.0 24.0  0.0
04 8 05 02 20 97  0.1 88  1.7 -2.0 -2.5 -0.2 -0.5  0.4  1.6  2.2  4.8 4  0 tr    0.0 502000 1011.0  0.0  8.5  0.4
05 7 03 09 02 97  0.1 74  2.4 -0.4 -2.5 -0.5 -0.5  0.4  1.6  2.1  4.6 3  0  0.0  0.2 000000 1016.5  0.0  3.0  1.5
06 8 07 09 02 97  1.0 68  2.7  0.1 -2.2 -0.1 -0.4  0.5  1.6  2.1  4.4 3  0 tr    0.0 000000 1021.5  0.0  0.0  0.7
07 8 08 05 02 97 -0.5 72 -0.5 -1.3 -3.8 -0.1 -0.3  0.7  1.5  1.9  4.4 3  0 tr    0.0 000000 1023.5  0.0 19.2  0.0
08 8 08 05 02 97 -1.1 80 -0.1 -2.9 -3.2 -0.2 -0.4  0.6  1.5  1.8  4.2 3  0  0.2  0.0 003000 1014.5  1.2 24.0  0.0
09 8 09 09 02 96 -0.1 92  1.3 -1.9 -2.3 -0.3 -0.4  0.6  1.5  1.8  4.1 3  0  0.5  0.0 500000 1009.5  1.0 12.0  0.0
10 8 09 02 02 96  0.6 79  1.2 -0.2 -1.9  0.1 -0.4  0.7  1.5  1.8  4.1 3  0  0.0  0.0 000000 1020.0  0.0  4.6  0.0
11 8 12 02 10 94  1.2 93  7.6 -0.2 -1.8  0.2 -0.4  0.7  1.6  1.7  4.0 3  0  1.1  0.0 000000 1023.5  1.7  3.0  0.5
12 8 20 02 02 96  7.6 96  8.1  1.2  2.3  0.3 -0.1  0.8  1.8  1.9  3.9 1  0 tr    0.0 000000 1025.5  0.0  0.0  0.1
13 2 23 02 02 96  2.8 95 10.5  2.8 -0.8  2.3  2.2  2.8  2.7  2.4  3.9 1  0  0.0  5.3 000000 1025.0  0.0  0.7  1.0
14 3 00 00 02 95 -2.7 92  6.5 -2.9 -6.6  0.7  0.7  1.7  2.7  2.7  4.1 3  0  0.0  6.1 000000 1022.5  0.0 15.4  1.3
15 9 00 00 45 02 -1.8 97  1.8 -3.2 -6.2  0.5  0.4  1.3  2.2  2.5  4.1 4  0 tr    0.0 000001 1023.5  0.0 14.2  0.1
16 9 00 00 45 02 -0.1 96  6.9 -1.8 -1.5  0.6  0.4  1.2  2.3  2.4  4.1 4  0 tr    6.0 000001 1020.0  0.0  6.0  1.0
17 8 18 02 03 96  5.4 94  7.3 -0.1 -3.7  0.7  0.4  1.7  2.2  2.5  4.1 3  0  2.3  0.0 000000 1010.5  3.8  0.0  0.7
18 8 22 05 02 97  7.3 95  8.4  5.4  1.3  3.3  2.4  2.6  2.7  2.6  4.1 1  0  1.4  0.2 000000 1016.5  3.0  0.0  0.2
19 8 11 05 02 94  4.7 96  5.4  4.0  1.3  3.8  3.3  3.5  3.4  3.1  4.1 1  0  0.0  0.0 000001 1009.0  0.0  0.0  0.6
20 8 09 02 02 97  5.0 93  7.0  3.7  1.4  3.7  3.2  3.7  3.7  3.3  4.2 1  0 tr    1.3 000000 1024.5  0.0  0.0  0.5
21 7 09 05 02 97  3.1 87  5.8  2.2 -1.9  2.5  2.3  3.3  3.9  3.5  4.4 1  0  5.2  4.4 000000 1030.0  4.7  0.0  0.7
22 8 15 02 60 96  3.7 94  7.8  2.3 -0.3  3.2  2.7  3.2  3.6  3.6  4.5 1  0  2.1  0.0 000000 1014.0  4.4  0.0  0.1
23 8 21 02 02 97  6.1 94  7.2  3.7  5.2  5.1  4.4  4.4  4.1  3.6  4.6 1  0  0.0  0.0 000000 1021.0  0.0  0.0  0.2
24 9 00 00 45 05  3.7 97  7.1  0.8 -3.0  3.3  3.0  3.7  4.2  3.9  4.7 1  0  0.0  1.2 000001 1022.0  0.0  0.0  0.1
25 0 00 00 02 95 -0.9 93 10.9 -1.4 -5.1  1.1  1.4  2.9  3.9  3.9  4.9 3  0  0.0  7.7 000000 1033.5  0.0  8.3  0.8
26 0 00 00 02 96 -0.8 92  8.9 -1.8 -5.4  1.0  1.1  2.4  3.6  3.8  4.8 3  0  0.0  7.8 000000 1033.5  0.0  6.3  0.4
27 8 00 00 46 04  2.5 96  7.4 -0.8 -0.2  2.3  2.1  2.9  3.6  3.6  4.8 1  0 tr    0.0 000001 1034.0  0.0  0.0  0.5
28 8 07 02 03 97  3.0 93  8.0  2.3 -1.7  2.1  2.2  3.4  3.8  3.6  4.8 1  0  0.0  3.9 000000 1041.5  0.0  0.0  0.6
29 8 05 02 02 97  4.8 91  5.7  0.7 -3.7  3.3  2.8  3.4  3.9  3.7  4.8 1  0  0.0  0.0 000000 1042.0  0.0  0.0  0.8
30 8 09 05 02 97  4.0 81  5.0  3.9  2.6  3.3  3.1  3.8  4.0  3.8  4.8 1  0  0.0  0.0 000000 1039.5  0.0  0.0  1.3
31 8 10 05 02 97  4.5 81  5.4  4.2  2.7  3.4  3.2  3.8  4.0  3.9  4.9 1  0  0.0  0.0 000000 1037.0  0.0  0.0  0.9
-----------------------------------------------------------------------------------------------------------------
Mean
   6.8  3.4       1.7 88  5.1  0.1 -2.1  1.3  1.1  2.0  2.7  2.8  4.5                       1023.5
Total                                                                      12.8 54.3              19.8 193.8 15.0
1961-1990 Climatological
Mean5.5 6.7           89  7.1  1.1 -0.8  3.3  3.3  4.1  4.7  5.4  6.6      57.3 46.4        1015.1 57
-----------------------------------------------------------------------------------------------------------------
Snow                      days  4; mean  3.6;             50% snow cover at 09h     days  0; mean  3.5;
Hail                      days  0; mean  0.0;             Ice pellets               days  0; mean  0.3;
Thunder                   days  0; mean  0.3;             Fog at 09h                days  5; mean  2.5;
Gale                      days  0; mean  0.7;
Air frost                 days 17; mean 11.5;             Days with 0.2mm rain      days  7; mean 17.2*
Grass minimum frost       days 24; mean 17.8;             Days with 1.0mm rain      days  5; mean 11.9*
Soil frost                days 21                         Days with 5.0mm rain      days  1; mean  4.8*
Concrete frost            days 20                         Days with no sun          days 16; mean 14.0

Minimum relative humidity - 55%/1st;     Air pressure: max - 1042.5mb/29th, min - 1007.5mb/8th

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC);
     ww   present weather code (02 sky not changing, 03 cloud increasing, 10 mist, 20 recent drizzle,
                    44,45 fog, 46 thickening fog, 60 intermittent light rain)
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);
     Press   air pressure (mb); E    state of ground (0 dry, 1 moist, 2 wet, 3 frozen, 4 ice, 5 <50% snow);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evapoartion (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;
     G    gale;                    F    fog at 09GMT;
* Averages for Hurley (4km away)

Coldest and driest Jan since 1987. Driest Dec+Jan combined since 1991/2. 1042.5mb - highest Jan value since 1992.
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February 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 8 17 05 02 96  4.8 89  6.5  4.6  3.0  3.3  3.4  4.0  4.1  3.9  4.9 1  0 tr    0.1 000000 1031.0  0.0  0.0  0.7
02 8 22 02 41 09  4.8 95  8.0  3.6  2.7  4.2  3.8  4.2  4.1  4.0  4.9 1  0  0.3  0.3 000000 1025.0  0.8  1.5  0.3
03 1 00 00 02 96 -2.8 92  9.0 -4.1 -7.2  1.1  1.5  2.9  4.1  4.1  4.9 3  0  0.0  5.8 000000 1030.0  0.0  9.5  1.3
04 8 25 09 03 97  9.0 91  9.4 -2.8  3.3  5.0  4.3  4.2  3.1  3.9  5.0 1  0  5.2  0.0 000000 1014.0  8.8  0.0  0.4
05 2 25 02 02 95  3.2 93 10.0  2.8 -1.4  3.9  4.2  5.1  4.8  4.2  5.0 1  0  0.0  5.7 000000 1020.0  0.0  0.0  0.6
06 8 22 05 02 97  8.4 92 10.2  3.2  0.3  5.3  4.7  4.8  4.9  4.5  5.0 1  0  0.0  0.0 000000 1026.0  0.0  0.0  1.0
07 8 22 09 02 97 10.2 94 10.7  8.4  6.4  6.9  6.1  6.0  5.5  4.7  5.1 1  0  2.0  0.4 000000 1024.0  2.9  0.0  0.3
08 7 25 02 02 97 -0.5 93  9.3 -2.0 -5.4  1.8  2.3  4.1  5.3  5.1  5.4 3  0 tr    3.6 000000 1033.0  0.0  8.5  0.4
09 6 20 05 25 97  9.3 93 11.5 -0.5  0.2  5.1  5.0  4.8  5.1  5.1  5.5 1  0  0.2  0.3 000000 1025.0  0.3  0.0  1.3
10 8 17 13 60 97 10.2 93 10.5  8.7  5.9  7.1  6.4  6.2  5.9  5.2  5.5 1  0  4.0  1.2 000000 1008.0  4.5  0.0  1.3
11 7 25 09 02 97  7.5 85 11.6  3.6 -0.2  3.6  3.6  4.6  5.6  5.4  5.6 1  0  5.1  0.0 000000 1018.0  9.4  0.0  0.7
12 8 18 13 60 96 11.3 98 11.8  7.5  9.2  8.1  7.3  6.9  6.0  5.4  5.8 1  0  8.7  0.0 000000 1006.5  4.3  0.0  0.9
13 8 26 13 02 97  5.3 81  9.0  4.4  1.7  5.6  5.9  6.8  6.6  5.8  5.9 1  0  0.0  6.0 000000  996.5  0.0  0.0  1.6
14 8 36 02 03 97  1.5 93  5.8 -0.8 -4.2  2.7  2.9  4.5  5.9  5.7  6.0 1  0  0.0  0.0 000000 1003.5  0.0  2.5  0.7
15 0 00 00 02 97  2.0 90 11.2 -0.2 -4.8  0.8  1.8  3.3  5.2  5.4  6.0 1  0  0.0  6.9 000000 1020.5  0.0  0.7  1.6
16 7 23 09 02 97  4.2 83  8.7  2.0 -3.0  3.3  3.3  4.1  5.1  5.2  6.0 1  0  2.3  0.0 000000 1017.0  2.5  0.0  0.4
17 8 18 05 02 97  8.0 89 10.4  4.2  3.2  4.6  4.4  5.0  5.2  5.2  6.0 1  0 10.6  0.0 000000 1013.0 14.3  0.0  1.1
18 3 25 05 01 97  7.5 79  9.1  6.4  3.1  6.4  6.2  6.5  6.0  5.5  5.9 1  0  1.2  6.6 000000 1004.0  0.9  0.0  1.2
19 8 19 09 03 97  6.9 89 10.4  2.1 -2.1  3.6  3.4  4.5  5.6  5.6  6.0 1  0  7.7  0.0 000000 1020.5  1.9  0.0  1.8
20 1 27 05 02 97  7.1 80 11.9  5.7  2.2  3.9  4.0  5.0  5.8  5.4  6.1 1  0  4.1  5.3 000000 1020.5  2.5  0.0  1.6
21 8 25 05 50 96  8.8 94 13.4  7.1  6.4  7.5  6.9  6.8  6.0  5.6  6.0 1  0  1.2  2.8 000000 1019.5  1.0  0.0  1.1
22 8 23 05 02 97 10.3 92 11.3  7.1  1.4  7.3  7.1  7.0  6.8  6.2  6.2 1  0  0.0  0.0 000000 1025.5  0.0  0.0  1.1
23 8 24 13 02 97 10.9 88 13.2  8.8  4.5  7.8  7.2  7.4  7.0  6.4  6.4 1  0  3.4  1.2 000000 1009.0  2.3  0.0  1.9
24 7 31 13 02 97  9.2 84 12.2  5.7  2.8  6.5  6.6  7.5  7.4  6.7  6.5 1  0  5.9  1.1 000000  995.0  6.7  0.0  2.2
25 6 23 13 03 97  9.5 80 13.6  8.9  6.2  6.9  6.8  7.4  7.4  6.8  6.7 1  0  3.7  4.6 000000  991.0  1.7  0.0  2.0
26 7 26 13 02 97  9.3 78 11.4  6.3  3.6  6.1  6.2  6.9  7.4  7.0  6.8 1  0  0.0  4.4 000000 1003.0  0.0  0.0  2.3
27 8 23 05 03 97  5.0 89 10.2  2.9 -2.0  4.3  4.4  5.9  7.0  6.9  6.9 1  0  0.0  0.1 000000 1031.5  0.0  0.0  1.5
28 7 20 09 02 97  9.8 87 11.9  5.0  4.7  6.0  5.8  6.5  6.9  6.7  6.9 1  0  0.1  0.2 000000 1022.5  0.2  0.0  1.0
-----------------------------------------------------------------------------------------------------------------
Mean
   6.5  7.1       6.8 88 10.4  3.9  1.4  5.0  4.8  5.5  5.7  5.4  5.8                       1016.2
Total                                                                      65.7 56.6               65.0 22.7 32.3
1961-1990 Climatological
Mean5.7 6.5           88  7.8  1.3 -1.3  2.9  3.3  4.1  4.6  5.1  6.0      39.3 65.2        1015.5 43
-----------------------------------------------------------------------------------------------------------------
Snow                      days  0; mean  3.4;             50% snow cover at 09h     days  0; mean  2.1;
Hail                      days  0; mean  0.2;             Ice pellets               days  0; mean  0.4;
Thunder                   days  0; mean  0.2;             Fog at 09h                days  0; mean  2.0;
Gale                      days  0; mean  0.4;
Air frost                 days  6; mean 10.0;             Days with 0.2mm rain      days 16; mean 12.6*
Grass minimum frost       days  9; mean 17.7;             Days with 1.0mm rain      days 14; mean  8.4*
Soil frost                days  6                         Days with 5.0mm rain      days  6; mean  3.0*
Concrete frost            days  5                         Days with no sun          days  9; mean  9.5

Minimum relative humidity - 57%/13th, 26th;     Air pressure: max - 1033.5mb/8th, min - 979.0mb/24th

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 25 recent
                     rain shower, 41 fog patches, 50 intermittent light drizzle, 60 intermittent light rain)
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);
     Press   air pressure (mb); E    state of ground (1 moist, 3 frozen, 5 <50% snow, 6 >50% snow, 70 100% snow);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evaporation (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;
     G    gale;                    F    fog at 09GMT;
* Averages for Hurley (4km away)

Notes: First snowfree February since 1984. February 1995 was wetter and milder.
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March 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 4 23 05 02 97  9.0 96 11.9  1.5 -2.7  5.3  5.1  6.1  6.9  6.8  6.9 1  0  0.3  1.7 000000 1024.0  0.3  0.0  1.8
02 8 26 09 21 96 11.4 94 13.6  9.0  9.4  9.2  8.6  8.2  7.5  6.8  6.9 1  0  0.1  4.6 000000 1015.0  0.2  0.0  1.5
03 7 27 02 03 96  6.0 94 10.0  2.9 -0.9  5.0  5.5  6.7  7.5  7.1  7.0 1  0  7.1  0.0 000000 1032.0  7.6  0.0  0.8
04 8 25 05 44 08  7.4 95 10.2  5.6  4.4  6.7  6.6  7.0  7.1  7.0  7.1 1  0  1.4  0.0 000001 1026.0  4.0  0.0  0.1
05 8 32 05 02 97  8.5 87 11.9  7.4  6.5  7.7  7.3  7.7  7.6  7.1  7.1 1  0  1.2  0.6 000000 1025.0  1.5  0.0  1.2
06 1 00 00 02 97  4.1 76 12.7  2.8 -1.5  5.4  6.2  7.7  7.8  7.2  7.2 1  0 tr    8.7 000000 1034.0  0.0  0.0  1.7
07 8 00 00 02 96  7.4 90 11.4  4.1  2.5  7.0  7.2  7.8  7.9  7.3  7.3 1  0  0.0  0.0 000000 1029.5  0.0  0.0  0.9
08 8 00 00 02 96  9.5 94 11.4  7.4  5.4  8.3  7.9  8.3  8.0  7.4  7.4 1  0  0.1  0.0 000000 1034.5  0.5  0.0  0.6
09 8 30 02 02 96  8.6 93 14.2  7.8  7.1  8.0  7.9  8.3  7.9  7.5  7.4 1  0 tr    4.3 000000 1035.0  0.0  0.0  0.9
10 9 00 00 45 01  6.0 96 15.3  5.5  5.5  7.9  7.9  8.6  8.1  7.7  7.6 1  0  0.0  4.8 000001 1033.0  0.0  0.0  0.6
11 9 18 02 47 01  3.3 96 17.7  1.2 -2.1  5.0  5.6  7.3  8.2  7.7  7.6 1  0 tr    7.3 000001 1034.5  0.0  0.0  1.8
12 9 00 00 47 01  5.9 97 15.7  3.3 -0.4  7.1  7.2  7.9  8.2  7.8  7.7 1  0  0.0  5.7 000001 1029.0  0.0  0.0  1.2
13 7 25 02 02 96  9.3 82 12.5  5.9  2.6  8.2  8.2  8.9  8.7  8.0  7.8 1  0  0.0  0.3 000000 1030.5  0.0  0.0  1.3
14 8 22 02 02 96 11.0 90 14.5  9.3  6.7  8.8  8.6  9.1  8.9  8.3  7.9 1  0  0.0  1.4 000000 1021.0  0.0  0.0  1.3
15 7 25 02 03 97 11.9 93 17.3  8.2  3.9  9.6  9.3  9.5  9.1  8.4  8.0 1  0  0.0  4.2 000000 1024.5  0.0  0.0  1.3
16 8 30 05 02 97 10.7 90 16.4  9.5  6.1 10.2  9.8 10.0  9.6  8.7  8.1 1  0  0.0  3.6 000000 1027.0  0.0  0.0  1.1
17 3 27 02 02 95  9.9 92 17.6  5.0  1.2  7.2  7.8  9.1  9.6  8.8  8.3 1  0 tr    6.8 000000 1028.0  0.0  0.0  1.4
18 8 27 05 02 97  9.1 94 13.8  8.4  6.6  9.6  9.7 10.1  9.9  8.9  8.4 1  0  0.4  3.1 000000 1014.0  0.5  0.0  1.9
19 7 31 13 80 97  9.9 83 12.9  8.1  5.7  8.3  8.3  9.2  9.5  9.0  8.6 1  0  0.0  5.6 000000 1011.0  0.0  0.0  2.4
20 2 32 02 02 97  8.2 79 15.2  2.4 -0.6  5.2  6.2  8.1  9.1  8.9  8.7 1  0 tr    8.4 000000 1022.0  0.0  0.0  1.8
21 1 01 02 02 97  8.4 66 13.7  4.3  0.9  7.2  7.7  9.2  9.4  8.8  8.6 1  0  0.0 10.0 000000 1025.0  0.0  0.0  2.1
22 0 18 02 02 97  6.7 90 13.8  0.5 -1.2  5.5  5.8  7.8  9.0  8.9  8.7 0  0  0.5  9.2 000000 1028.5  0.9  0.0  2.2
23 7 20 09 02 97 10.1 79 13.8  6.2  3.9  8.3  8.0  8.8  9.0  8.8  8.8 1  0 tr    1.6 000000 1010.5  0.0  0.0  1.4
24 8 22 05 02 97  8.1 92 10.4  3.4  0.9  7.2  7.3  8.5  9.1  8.8  8.8 0  0  0.4  0.0 000000 1011.0  1.7  0.0  0.8
25 8 15 02 03 97  9.8 84 13.9  3.9  0.6  6.7  6.7  8.1  8.8  8.6  8.7 1  0  0.1  0.0 000000 1018.5  0.2  0.0  1.4
26 8 22 09 02 97 11.2 91 13.6  9.5  6.7  9.4  9.3  9.6  9.4  8.7  8.7 1  0  0.0  0.0 000000 1016.0  0.0  0.0  0.8
27 7 30 02 02 96 10.0 79 17.7  5.0  2.4  6.7  7.2  8.8  9.2  8.8  8.7 1  0 tr    8.1 000000 1021.0  0.0  0.0  3.3
28 1 33 09 02 97  9.4 66 13.0  4.4  1.3  6.8  7.4  9.1  9.7  9.0  8.8 0  0  0.0 10.9 000000 1022.5  0.0  0.0  3.3
29 3 31 02 02 97  8.0 77 14.0  2.8  0.5  5.7  5.8  7.9  9.1  9.0  8.9 0  0  0.0  7.2 000000 1028.5  0.0  0.0  2.1
30 1 32 02 02 97 10.9 70 15.5  0.3 -1.0  4.9  5.9  8.1  9.1  8.9  8.9 0  0  0.0  8.9 000000 1029.5  0.0  0.0  1.7
31 0 29 02 02 97  8.9 76 16.6  0.3 -1.2  5.5  6.0  8.0  9.0  8.8  8.9 0  0  0.0 11.0 000000 1028.0  0.0  0.0  1.9
-----------------------------------------------------------------------------------------------------------------
Mean
   5.5  3.5       8.7 87 13.9  5.0  2.6  7.2  7.4  8.4  8.6  8.2  8.0                       1024.8
Total                                                                      11.6 138.0              17.4  0.0 46.6
1961-1990 Climatological
Mean6.0 6.3           83 10.7  2.7  0.0  4.6  4.9  5.8  5.9  6.2  6.4      51.6 106.1       1015.0 57
-----------------------------------------------------------------------------------------------------------------
Snow                      days  0; mean  2.7;             50% snow cover at 09h     days  0; mean  0.6;
Hail                      days  0; mean  0.5;             Ice pellets               days  0; mean  0.5;
Thunder                   days  0; mean  0.5;             Fog at 09h                days  4; mean  0.8;
Gale                      days  0; mean  0.4;
Air frost                 days  0; mean  6.4;             Days with 0.2mm rain      days  7; mean 15.3*
Grass minimum frost       days  9; mean 15.5;             Days with 1.0mm rain      days  3; mean 10.6*
Soil frost                days  0                         Days with 5.0mm rain      days  1; mean  3.9*
Concrete frost            days  0                         Days with no sun          days  7; mean  6.4

Minimum relative humidity - 49%/28th;     Air pressure: max - 1036.0mb/8th, min - 1007.0mb/19th

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (02 sky not changing, 03 cloud increasing, 21 recent rain, 44,45,47 fog,
                                80 light rain shower);
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);   SS snow depth (cm);
     Press   air pressure (mb); E    state of ground (1 moist, 2 wet, 3 frozen, 5 <50% snow);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evaporation (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;
     G    gale;                    F    fog at 09GMT;
* Averages for Hurley (4km away)
Notes: Mildest March since 1957; first frost-free March since 1981. Driest March since 1990,
foggiest March since 1986.
Return to top of document


April 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 1 02 02 02 97 10.3 74 17.9  0.8 -1.0  5.5  6.6  8.5  9.4  8.9  8.9 0  0  0.0 11.1 000000 1025.0  0.0  0.0  2.0
02 0 00 00 02 97 11.2 74 18.1  2.2  0.8  5.8  6.6  8.5  9.4  9.0  8.9 0  0  0.0  9.0 000000 1023.0  0.0  0.0  1.9
03 7 33 09 02 97 11.6 79 15.5  7.9  4.8  8.9  8.8  9.9 10.0  9.3  9.0 0  0  0.0  5.1 000000 1017.0  0.0  0.0  2.7
04 1 27 02 02 97  8.5 65 14.3  3.2  0.1  5.6  6.8  8.8  9.7  9.3  9.0 0  0  0.0  7.8 000000 1029.5  0.0  0.0  2.4
05 8 28 09 02 97 11.6 77 17.3  8.5  7.8 10.1  9.9 10.2 10.0  9.4  9.1 0  0  0.0  5.8 000000 1020.0  0.0  0.0  2.1
06 8 02 05 02 97  8.9 85 14.5  8.3  7.0 10.1 10.2 10.9 10.5  9.7  9.1 0  0  0.0  2.3 000000 1027.5  0.0  0.0  2.1
07 2 06 02 02 97  8.0 71 15.5  0.5 -2.0  6.2  7.7  9.8 10.4  9.9  9.3 0  0  0.0 11.1 000000 1033.0  0.0  0.0  2.9
08 3 06 02 02 97  8.4 63 17.3  1.3 -2.1  6.1  7.2  9.4 10.2  9.8  9.4 0  0  0.0  8.5 000000 1029.5  0.0  0.0  3.4
09 6 06 02 02 96 10.5 66 20.9  2.5 -0.1  7.1  7.4  9.8 10.3  9.7  9.4 0  0  0.0 11.5 000000 1029.5  0.0  0.0  2.9
10 4 00 00 02 96 12.4 67 21.9  2.4 -0.8  7.0  8.2 10.0 10.5  9.9  9.5 0  0  0.0 11.2 000000 1033.0  0.0  0.0  3.0
11 8 33 02 02 97 12.0 77 15.6  7.1  2.4  9.6 10.9 11.0 11.0 10.3  9.6 0  0  0.0  4.5 000000 1029.0  0.0  0.0  2.5
12 7 35 02 02 97  7.0 67 13.4  0.8 -2.3  7.0  7.5  8.5 10.0 10.3  9.6 0  0  0.0 12.5 000000 1033.0  0.0  0.0  2.5
13 7 36 02 02 97 10.5 64 16.9  5.8  2.0  8.0  9.5 10.5 10.7 10.3  9.7 0  0  0.0  4.7 000000 1029.5  0.0  0.0  1.6
14 8 02 02 03 96  9.1 90 16.0  6.6  2.2 10.1 10.2 11.1 10.9 10.3  9.8 0  0  0.0  2.0 000000 1027.5  0.0  0.0  1.6
15 7 05 09 02 97  9.3 63 14.0  5.4  1.4  9.5  9.9 10.9 11.0 10.4  9.8 0  0  0.0 10.7 000000 1032.5  0.0  0.0  2.6
16 0 04 05 02 97  6.5 64 15.8  1.6 -1.5  6.8  8.1 10.0 10.9 10.5  9.9 0  0  0.0 11.4 000000 1031.5  0.0  0.0  2.7
17 8 06 05 02 97  9.2 84 14.0  6.5  4.6 10.1 10.5 11.3 11.0 10.5  9.9 0  0  0.0  5.7 000000 1027.5  0.0  0.0  2.1
18 8 00 00 41 09  9.5 76 11.6  2.4 -1.6  7.1  7.6  9.5 10.3 10.3 10.0 0  0  0.1  2.7 000000 1027.0  0.2  0.0  1.8
19 8 04 05 50 95  7.5 83  9.5  5.5  2.8  9.1  9.3 10.2 10.4 10.1  9.9 0  0  0.0  1.1 000000 1021.0  0.0  0.0  2.9
20 1 05 09 02 97  7.8 48  9.8  1.2 -3.6  6.4  6.8  8.6  9.6  9.8  9.9 0  0  0.0  8.8 000000 1023.5  0.0  0.0  2.3
21 0 00 00 02 97  5.1 54 14.6 -2.4 -5.4  4.0  5.4  7.9  9.2  9.4  9.8 0  0  0.0  9.9 000000 1020.0  0.0  3.7  2.6
22 7 03 02 02 97  7.5 62 12.2  5.5  4.2  8.6  9.1 10.2 10.0  9.5  9.6 0  0  0.0  4.7 000000 1019.5  0.0  0.0  1.9
23 7 25 02 02 97 11.7 69 15.5  4.6  0.0  8.3  8.8  9.9 10.1  9.7  9.6 0  0  0.0  6.1 000000 1020.0  0.0  0.0  2.5
24 8 23 05 02 95 10.3 78 15.7  4.4  0.5  8.3  8.8 10.2 10.5 10.0  9.7 0  0  0.0  3.5 000000 1018.5  0.0  0.0  2.2
25 8 27 02 02 97  9.9 88 11.3  7.2  4.5  9.9 10.0 10.9 10.7 10.1  9.7 0  0 13.1  0.0 000000 1017.0 15.2  0.0  0.2
26 8 18 02 02 94 10.5 94 14.0  8.7  8.4  9.9  9.9 10.9 10.3  9.9  9.8 1  0  1.6  0.0 000000 1012.0  2.8  0.0  0.5
27 6 22 05 02 97 14.0 89 18.7  9.0  6.2 11.5 10.3 10.5 10.5 10.0  9.8 1  0 tr    6.7 000000 1010.0  0.0  0.0  1.9
28 8 25 09 02 97 14.5 85 18.0 11.7 10.0 12.6 12.2 12.3 11.6 10.5  9.9 1  0  0.5  4.1 000000 1007.5  0.6  0.0  2.7
29 7 33 09 02 97 15.2 66 18.2 10.7  7.6 11.1 11.4 12.1 12.0 10.9 10.0 1  0  0.0  4.7 000000 1014.5  0.0  0.0  3.1
30 1 36 02 02 97 15.5 69 20.8  5.7  1.4  9.0  9.7 11.3 11.9 11.2 10.2 1  0  0.0 12.9 000000 1026.5  0.0  0.0  2.3
-----------------------------------------------------------------------------------------------------------------
Mean
   5.4  3.7      10.1 73 15.6  4.9  1.9  8.3  8.8 10.1 10.4 10.0  9.6                       1023.8
Total                                                                      15.3 200.1              18.8  3.7 67.9
1961-1990 Climatological
Mean5.1 6.1           77 13.5  4.8  2.0  7.2  7.7  8.2  8.7  8.3  8.0      45.9 140.9       1015.2 45
-----------------------------------------------------------------------------------------------------------------
Snow                      days  0; mean  1.0;             50% snow cover at 09h     days  0; mean  0.1;
Hail                      days  0; mean  0.3;             Ice pellets               days  0; mean  0.3;
Thunder                   days  0; mean  0.6;             Fog at 09h                days  0; mean  0.1;
Gale                      days  0; mean  0.0;
Air frost                 days  1; mean  2.1;             Days with 0.2mm rain      days  3; mean 14.1*
Grass minimum frost       days 10; mean  9.2;             Days with 1.0mm rain      days  2; mean 10.1*
Soil frost                days  3                         Days with 5.0mm rain      days  1; mean  3.4*
Concrete frost            days  1                         Days with no sun          days  2; mean  3.4

Minimum relative humidity - 24%/8th;     Air pressure: max - 1033.0mb/10th,12th min - 1005.0mb/26th

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (02 sky not changing, 03 cloud increasing, 41 fog patches, 50 intermittent light drizzle);
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);   SS snow depth (cm);
     Press   air pressure (mb); E    state of ground (1 moist, 2 wet, 3 frozen);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evaporation (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;
     G    gale;                    F    fog at 09GMT;
* Averages for Hurley (4km away)

Warm by day, dry and with unusually high air pressure.
Return to top of document


May 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 4 25 02 02 97 14.0 72 23.8  6.2  2.5  9.6 10.3 11.9 12.4 11.4 10.4 0  0  0.0 12.7 000000 1030.0  0.0  0.0  3.0
02 0 20 02 02 97 16.0 70 26.0  7.1  3.2 10.8 10.8 12.7 13.0 11.9 10.6 0  0  0.0 13.9 000000 1022.0  0.0  0.0  3.3
03 2 18 02 02 97 16.3 66 24.8  8.0  3.4 11.6 12.1 13.4 13.6 12.3 10.8 0  0  1.0  7.0 000000 1006.5  2.3  0.0  3.2
04 7 22 09 58 95 12.5 93 19.1 12.4  9.7 10.5 10.9 13.5 13.8 12.4 11.0 1  0  0.0  6.0 000000 1004.5  0.0  0.0  1.8
05 7 20 05 02 97 14.0 79 17.8 11.7  9.5 10.6 11.0 13.2 13.7 12.5 11.2 0  0  5.6  2.5 000000  991.5  7.7  0.0  1.6
06 6 36 13 02 97  5.2 72  9.7  4.0  3.1  8.8 10.1 12.2 13.1 12.6 11.4 1  0 tr    9.7 100000  996.5  0.0  0.0  1.7
07 2 29 02 02 97  7.1 61 13.1 -0.9 -3.9  5.5  6.9  9.8 11.7 11.8 11.4 1  0  3.5  8.8 000000 1003.0  5.4  2.0  1.5
08 7 25 05 21 97  8.0 82 12.7  5.3  2.8  9.1  9.3 10.7 11.5 11.4 11.2 1  0  3.6  1.8 000000  998.0  5.8  0.0  1.2
09 4 27 09 01 97 11.6 77 13.8  5.9  3.4  8.9  9.6 10.9 11.5 11.2 11.1 1  0  9.1  8.1 005100  998.5  1.9  0.0  1.2
10 7 18 09 02 97 11.8 81 14.5  6.0  2.5 10.0  9.8 10.8 11.4 11.3 11.0 1  0  1.2  5.5 000000 1003.0  2.0  0.0  2.0
11 3 18 09 02 97 13.8 68 15.5  8.2  2.5  9.5  9.3 10.8 11.5 11.2 11.0 1  0  5.3  8.0 000000 1003.0  5.0  0.0  2.1
12 0 25 05 25 97 13.9 73 14.9  5.2  1.3  8.9  9.4 10.9 11.6 11.1 10.9 1  0  5.7  8.1 005100 1014.5  2.9  0.0  1.4
13 6 22 05 02 97 14.7 73 17.4  4.7  1.3  9.2  9.4 10.7 11.6 11.2 10.9 1  0  0.0 11.5 000000 1020.0  0.0  0.0  2.5
14 0 00 00 02 96 14.3 75 19.4  5.2  1.3  8.9  9.8 11.5 12.0 11.3 10.9 1  0  0.0 13.5 000000 1022.5  0.0  0.0  2.2
15 6 31 02 03 97 15.1 74 19.4  6.1  2.6 10.2 11.0 12.4 12.7 11.6 10.9 0  0  0.0  4.5 000000 1022.5  0.0  0.0  2.5
16 8 16 05 02 96 15.4 87 21.4 11.0  8.8 12.3 12.3 13.0 12.8 11.9 11.0 0  0  0.6  0.6 000100 1016.5  0.9  0.0  1.3
17 8 20 02 10 15 15.8 96 25.4 13.1  9.2 14.4 13.9 13.9 13.1 12.1 11.2 1  0  4.6  6.5 000100 1013.0  2.3  0.0  1.8
18 8 21 05 02 96 15.7 88 20.7 14.8 12.6 16.6 15.9 15.6 14.6 12.9 11.4 1  0  0.0  4.9 000000 1010.5  0.0  0.0  1.4
19 8 20 02 02 96 14.0 87 17.4 11.4  8.3 14.2 14.3 14.9 14.6 13.3 11.6 1  0  3.6  1.9 000000 1007.0  2.9  0.0  1.0
20 7 21 02 02 96 12.0 94 15.8  9.1  5.2 12.7 12.8 13.9 14.1 13.3 11.9 1  0  3.3  0.0 000000 1003.5  7.4  0.0  0.7
21 8 25 05 02 96 12.4 91 13.4 11.2 11.0 13.2 13.4 14.0 13.9 13.0 12.0 1  0 tr    0.0 000000 1007.5  0.0  0.0  1.2
22 8 35 02 21 97  9.8 82 14.1  8.4  6.5 11.2 11.6 12.9 13.2 12.7 12.0 1  0  0.3  0.0 000000 1017.5  2.0  0.0  1.8
23 8 32 09 02 97  9.9 88 15.6  8.4  7.7 11.3 11.9 12.9 13.0 12.6 12.0 1  0  0.0  3.7 000000 1022.5  0.0  0.0  2.5
24 0 12 13 02 97 11.6 61 16.3  4.7  2.5  8.3  9.2 11.4 12.4 12.2 11.9 1  0  0.0 14.4 000000 1028.0  0.0  0.0  3.4
25 2 14 05 03 97 14.7 68 19.0  5.5  3.1 11.2 10.3 11.8 12.7 12.4 11.9 0  0  0.0 14.5 000000 1031.0  0.0  0.0  2.9
26 1 00 00 02 97 15.7 66 23.3  5.5  3.2 10.3 11.2 12.9 13.5 12.6 11.9 0  0  0.0 13.2 000000 1027.0  0.0  0.0  3.4
27 8 09 09 02 97 14.1 76 19.7 11.4  9.9 13.8 14.3 15.0 14.8 13.2 12.0 0  0  0.0 10.3 000000 1026.5  0.0  0.0  3.3
28 7 05 13 03 97 12.0 68 18.0  6.0  4.5 12.2 12.8 14.5 14.9 13.7 12.1 0  0  0.0 11.0 000000 1030.5  0.0  0.0  3.2
29 0 06 02 02 97 15.4 68 23.2  6.0  2.9 11.6 12.4 14.1 14.7 13.7 12.3 0  0  0.0 14.6 000000 1029.5  0.0  0.0  3.8
30 0 04 02 02 97 20.0 66 25.6  8.4  4.4 12.8 13.7 15.1 15.3 14.0 12.4 0  0  0.0 14.9 000000 1028.5  0.0  0.0  5.2
31 2 08 05 02 97 20.2 53 23.5 10.1  6.5 14.7 14.9 15.9 15.9 14.6 12.6 0  0  0.0 14.8 000000 1026.0  0.0  0.0  5.5
-----------------------------------------------------------------------------------------------------------------
Mean
   4.6  5.2      13.5 76 18.5  7.7  4.9 11.1 11.4 12.8 13.2 12.4 11.4                       1014.9
Total                                                                      47.4 246.9              48.5  2.0 73.6
1961-1990 Climatological
Mean4.9 6.4           73 17.1  7.9  5.6 10.7 10.7 12.1 12.2 11.2 10.1      54.1 187.3       1015.2 46
-----------------------------------------------------------------------------------------------------------------
Snow                      days  1; mean  0.1;             50% snow cover at 09h     days  0; mean  0.0;
Hail                      days  2; mean  0.3;             Ice pellets               days  0; mean  0.1;
Thunder                   days  4; mean  1.8;             Fog at 09h                days  0; mean  0.1;
Gale                      days  0; mean  0.0;
Air frost                 days  1; mean  0.2;             Days with 0.2mm rain      days 13; mean 13.7*
Grass minimum frost       days  1; mean  2.0;             Days with 1.0mm rain      days 11; mean 10.3*
Soil frost                days  0                         Days with 5.0mm rain      days  4; mean  3.6*
Concrete frost            days  0                         Days with no sun          days  3; mean  2.3

Minimum relative humidity - 37%/31st;     Air pressure: max - 1031.5mb/25th min - 987.5mb/5th

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing,
                     10 mist, 21 recent rain, 25 recent rain shower, 58 light rain and drizzle);
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);   SS snow depth (cm);
     Press   air pressure (mb); E    state of ground (0 dry, 1 moist, 2 wet);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evaporation (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;
     G    gale;                    F    fog at 09GMT;
* Averages for Hurley (4km away)
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June 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 0 09 13 02 97 16.6 53 20.0 10.7  7.5 14.1 14.6 15.9 16.0 14.9 12.8 0  0  0.0 14.9 000000 1024.5  0.0  0.0  6.6
02 1 12 13 02 97 15.7 70 21.9 11.9 10.3 14.9 15.4 16.2 16.1 14.9 13.0 0  0  0.0 10.3 000000 1017.5  0.0  0.0  5.0
03 0 12 09 02 97 15.9 70 22.1 10.2  8.0 13.9 14.7 15.9 15.9 14.8 13.2 0  0  0.0  8.2 000000 1018.0  0.0  0.0  3.4
04 8 09 05 02 97 14.0 80 23.2  9.8  8.5 15.1 15.6 16.7 16.2 15.0 13.3 0  0  0.0 10.5 000000 1018.0  0.0  0.0  3.6
05 5 13 09 02 97 19.0 65 26.1 11.0  8.6 15.8 16.2 17.0 16.6 15.2 13.4 0  0  3.3  4.3 000000 1007.0  1.0  0.0  3.9
06 7 22 02 02 97 16.1 91 24.3 14.2 11.7 16.4 16.6 17.4 16.8 15.4 13.5 1  0  6.7  2.0 000000 1006.5  4.2  0.0  2.3
07 7 20 02 02 97 17.2 91 23.5 15.6 14.9 16.7 17.1 17.6 16.9 15.5 13.6 1  0 tr    5.5 000000 1006.0  0.0  0.0  2.8
08 3 18 09 03 97 19.9 78 21.7 12.5  9.4 15.8 15.9 16.9 16.9 15.7 13.9 1  0  0.5 10.4 000000 1010.5  0.9  0.0  2.7
09 8 22 02 02 96 16.6 79 22.3  9.7  6.2 14.9 15.4 16.4 16.8 15.8 14.0 1  0  0.0  8.5 000000 1022.0  0.0  0.0  2.5
10 7 15 09 02 97 19.4 73 25.5 12.5  9.5 16.4 16.4 17.3 17.0 15.8 14.1 1  0  6.5  4.5 000000 1018.5  3.5  0.0  3.6
11 8 10 02 10 94 17.9 96 24.8 16.4 15.5 18.0 18.2 18.2 17.4 16.1 14.2 1  0  3.3  0.7 000100 1007.5  1.8  0.0  1.6
12 8 18 09 21 97 16.3 93 19.4 15.1 12.3 17.6 17.7 18.1 17.6 16.4 14.4 1  0  0.0  1.6 000000 1006.0  0.0  0.0  1.7
13 7 24 05 02 97 18.0 80 22.5 14.4 12.0 17.4 17.2 17.5 17.3 16.3 14.5 1  0  0.0  6.3 000000 1005.0  0.0  0.0  2.6
14 8 28 02 02 97 15.8 78 18.5 13.2 12.4 16.4 16.8 17.8 17.5 16.4 14.6 1  0 tr    0.7 000000 1008.5  0.0  0.0  1.7
15 7 31 02 03 97 16.2 70 18.8 10.7  7.9 16.2 15.8 16.6 16.8 16.3 14.8 1  0 tr    6.4 000000 1018.0  0.0  0.0  2.0
16 6 03 02 02 97 18.3 67 20.0 12.6 11.2 15.3 15.6 16.8 16.7 16.1 14.8 0  0  1.9  4.5 000000 1019.5  1.4  0.0  2.2
17 7 09 02 02 97 17.4 64 20.5 10.6 10.8 14.0 14.9 16.1 16.4 15.8 14.8 1  0  0.0  2.6 000000 1021.0  0.0  0.0  2.9
18 7 19 02 05 96 16.4 72 21.4 10.1  7.4 14.4 15.9 16.3 16.4 15.7 14.7 0  0  5.2  5.9 000000 1019.0  2.8  0.0  3.1
19 8 20 02 61 95 13.3 89 15.6 12.8 12.0 15.5 16.1 17.1 16.9 16.0 14.8 1  0  3.9  0.5 000000 1008.0  5.5  0.0  1.1
20 6 22 05 03 97 14.3 79 15.5  7.2  5.2 12.5 13.3 15.0 15.9 15.7 14.7 1  0  3.5  3.7 000000 1002.5  4.2  0.0  1.6
21 7 22 13 03 97 15.1 70 17.0 11.5  9.1 13.3 13.7 14.9 15.4 15.2 14.6 1  0  8.4  5.9 000000  992.5  4.8  0.0  1.5
22 7 26 05 02 97 15.2 87 18.2 11.9 10.8 15.3 14.9 15.3 15.5 15.2 14.6 1  0  4.7  2.6 000100  995.0  4.0  0.0  1.0
23 8 33 02 02 97 15.0 84 19.5 12.4 10.4 14.9 15.1 15.6 15.9 15.2 14.5 1  0  6.1  4.0 000000 1009.0  0.9  0.0  2.1
24 7 32 02 02 97 14.1 74 18.0 10.9  9.6 13.9 14.3 15.5 16.0 15.3 14.5 1  0  3.0  3.2 000000 1016.0  4.4  0.0  2.1
25 8 22 02 61 96 12.1 95 16.5 12.0 11.4 14.4 14.9 15.9 16.0 15.3 14.5 1  0  4.9  0.3 000000 1004.0  5.4  0.0  0.4
26 8 36 09 02 97 14.9 95 14.9 12.1 13.0 15.3 15.3 15.6 15.5 15.1 14.5 1  0 13.7  0.0 000000  995.0 12.5  0.0  0.7
27 8 03 13 02 97 12.0 95 12.9 11.2 11.0 13.0 13.4 14.4 14.9 14.7 14.4 1  0  1.0  0.0 000000  999.5  5.0  0.0  0.7
28 8 26 02 02 96 12.0 95 14.8 10.8 10.6 12.9 13.0 13.7 14.1 14.2 14.3 1  0  1.0  0.0 000000 1004.0  2.3  0.0  0.4
29 8 03 02 02 96 16.2 90 18.5 12.0 12.7 14.4 14.2 14.5 14.2 14.0 14.1 1  0  0.0  0.3 000000 1008.5  0.0  0.0  1.7
30 8 33 02 02 96 13.7 85 17.2 11.4 11.2 13.4 13.8 14.8 14.7 14.2 14.0 1  0  0.2  0.3 000000 1005.0  0.6  0.0  1.4
-----------------------------------------------------------------------------------------------------------------
Mean
   6.5  5.3      15.8 80 19.8 11.9 10.4 15.1 15.4 16.2 16.2 15.4 14.2                       1009.7
Total                                                                      77.8 128.6              65.2  0.0 68.9
Climatological
Mean5.3 5.6           72 20.0 10.7  9.0 14.3 14.5 15.6 15.2 14.1 12.5      52.6 191.8       1017.0 41
-----------------------------------------------------------------------------------------------------------------
Snow                      days  0; mean  0.0;             50% snow cover at 09h     days  0; mean  0.0;
Hail                      days  0; mean  0.1;             Ice pellets               days  0; mean  0.0;
Thunder                   days  2; mean  2.3;             Fog at 09h                days  0; mean  0.1;
Gale                      days  0; mean  0.0;
Air frost                 days  0; mean  0.0;             Days with 0.2mm rain      days 18; mean 11.5*
Grass minimum frost       days  0; mean  0.0;             Days with 1.0mm rain      days 16; mean  8.2*
Soil frost                days  0                         Days with 5.0mm rain      days  6; mean  3.6*
Concrete frost            days  0                         Days with no sun          days  3; mean  2.1

Minimum relative humidity - 39%/1st;     Air pressure: max - 1024.5mb/1st min - 991.5mb/21st

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (02 sky not changing, 03 cloud increasing, 05 haze, 10 mist,
                    21 recent rain, 61 continuous light rain)
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);
     Press   air pressure (mb); E    state of ground code (0 dry, 1 moist, 2 wet);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evaporation (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;
     G    gale;                    F    fog at 09GMT;
* Averages for Hurley (4km away)
Notes: Wettest and dullest June since 1991. 12.9C on the 27th - lowest max in the last week of June since 1977.
Return to top of document


July 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 7 25 02 02 97 16.3 72 18.6 11.6  9.5 13.8 14.0 14.8 14.7 14.3 14.0 1  0 tr    4.5 000000 1004.5  0.0  0.0  2.1
02 7 22 02 21 97 15.4 67 18.9 10.4  7.5 13.9 14.1 15.0 15.0 14.5 14.0 1  0  4.6  4.5 000000 1006.0  3.4  0.0  1.8
03 7 23 05 02 97 13.8 85 16.2  9.9  8.1 13.8 13.9 14.9 15.2 14.6 14.1 1  0  9.2  0.5 000000 1008.0  7.6  0.0  1.2
04 8 23 02 51 94 14.7 88 19.1 12.0 11.5 14.0 14.2 14.9 15.0 14.6 14.1 1  0  2.3  0.2 000000 1016.0  1.0  0.0  1.1
05 7 29 05 03 97 16.2 84 22.7 10.7  8.0 15.4 14.3 14.7 15.0 14.6 14.1 1  0  0.0 11.5 000000 1025.0  0.0  0.0  2.1
06 7 32 02 02 97 16.9 83 25.4 10.0  8.5 14.9 14.9 15.7 15.7 15.0 14.1 1  0  0.0  9.5 000000 1028.5  0.0  0.0  2.2
07 2 30 02 02 97 19.9 64 26.6 13.3 11.4 15.7 16.3 17.3 16.9 15.7 14.3 0  0  0.0 12.9 000000 1028.0  0.0  0.0  2.9
08 5 05 02 02 96 20.4 78 27.3 14.8 13.0 17.6 17.7 18.4 17.8 16.4 14.5 0  0  3.0  7.6 000000 1025.5  3.8  0.0  2.1
09 6 02 02 02 97 20.4 71 26.9 16.4 15.1 18.3 18.6 19.3 18.4 17.0 14.9 1  0  0.0 13.4 000000 1021.5  0.0  0.0  3.3
10 8 09 05 02 97 15.6 82 22.9 14.8 13.2 17.2 18.1 19.1 19.0 17.5 15.1 0  0  0.0  8.1 000000 1018.0  0.0  0.0  2.6
11 7 02 02 02 97 14.9 90 23.0 12.3 10.5 16.2 16.9 18.2 18.4 17.4 15.5 0  0  0.0  5.6 000000 1016.0  0.0  0.0  1.3
12 8 27 02 46 05 16.0 91 25.0 13.6 11.5 16.4 16.8 17.7 17.8 17.1 15.6 0  0  0.9  8.3 000000 1015.5  0.2  0.0  2.4
13 8 25 05 02 97 19.0 84 23.8 15.7 14.0 17.5 18.0 18.6 18.2 17.2 15.6 1  0  4.2  7.3 000100 1015.0  0.4  0.0  2.7
14 8 00 00 02 97 17.2 88 23.4 14.8 12.9 17.5 17.9 18.5 18.4 17.4 15.7 1  0  0.1  4.5 000000 1018.0  0.2  0.0  2.2
15 8 25 02 02 96 18.8 80 25.6 14.8 12.9 17.2 17.4 18.2 18.2 17.4 15.8 0  0 tr    7.1 000000 1020.0  0.0  0.0  2.7
16 8 29 05 02 97 17.1 86 22.1 14.7 11.8 17.7 18.3 19.0 18.9 17.6 15.9 0  0  0.6  3.5 000000 1017.5  0.5  0.0  1.7
17 8 23 02 02 97 16.2 90 20.8 15.0 13.1 17.2 17.6 18.3 18.1 17.4 16.0 0  0  0.4  1.0 000000 1013.0  1.0  0.0  1.5
18 7 33 05 02 97 17.7 76 21.8 12.2 10.0 15.4 15.6 16.9 17.6 17.3 16.0 0  0  0.3  5.8 000000 1018.0  0.7  0.0  1.8
19 7 04 05 02 97 17.5 78 24.7 12.5 10.0 15.5 15.8 17.4 17.7 17.3 16.0 0  0  0.0 11.5 000000 1026.0  0.0  0.0  3.2
20 1 36 02 02 97 20.0 56 25.1 11.0  8.5 15.0 15.5 18.0 18.3 17.2 15.9 0  0  0.0 14.1 000000 1026.0  0.0  0.0  3.7
21 2 04 02 02 97 20.8 55 25.7 13.9 11.9 17.1 17.6 18.6 18.3 17.4 16.0 0  0  0.0 10.8 000000 1024.0  0.0  0.0  3.9
22 2 00 00 02 97 21.1 63 26.9 13.0 10.1 16.6 17.4 18.8 18.8 17.7 16.1 0  0  0.0 11.4 000000 1021.0  0.0  0.0  3.6
23 7 22 02 02 96 20.9 65 27.9 14.5 12.2 18.2 18.9 19.9 19.1 18.1 16.3 0  0  0.0  7.2 000000 1019.0  0.0  0.0  3.8
24 7 27 02 03 97 18.5 81 23.6 16.0 13.9 18.8 19.3 20.1 19.5 18.4 16.4 0  0  1.3  0.3 000000 1014.0  2.2  0.0  2.0
25 2 30 05 02 97 18.5 75 24.2 13.6 11.1 16.3 17.3 18.8 19.0 18.3 16.6 1  0  0.2 11.7 000000 1011.5  0.1  0.0  2.9
26 8 20 02 03 97 17.0 87 20.9 11.6  9.0 17.7 17.7 18.6 18.6 18.2 16.7 0  0  7.5  0.4 000000 1016.5  2.5  0.0  1.1
27 6 34 09 02 97 18.7 77 25.6 14.9 12.1 17.2 17.3 18.2 18.4 17.8 16.7 1  0  0.0  7.8 000000 1018.5  0.0  0.0  2.9
28 5 30 02 02 97 18.4 68 25.9 12.0  9.8 15.7 16.8 18.4 18.8 17.9 16.7 0  0  0.0 10.9 000000 1021.5  0.0  0.0  2.8
29 4 00 00 02 97 21.3 63 26.6 12.2 10.0 16.2 17.2 18.7 18.9 18.1 16.7 0  0  1.1 13.0 000000 1020.0  1.2  0.0  4.5
30 6 27 02 01 97 20.9 64 24.3 15.9 14.7 18.3 19.0 19.6 19.3 18.4 16.8 1  0  0.0  8.2 000000 1016.5  0.0  0.0  3.4
31 8 25 09 02 97 15.5 77 18.1 14.9 13.0 17.7 18.3 19.5 19.4 18.5 16.9 0  0  4.9  0.0 000000 1016.5  7.1  0.0  0.8
-----------------------------------------------------------------------------------------------------------------
Mean
    6.2 3.0      17.9 76 23.5 13.3 11.3 16.5 16.9 17.9 17.8 17.0 15.6                       1018.2
Total                                                                      40.6 223.1              31.9  0.0 76.3
1961-1990 Climatological
Mean5.2 5.5           73 22.1 12.5 10.8 16.0 16.4 17.3 17.3 16.3 15.1      46.7 191.2       1017.5 35
-----------------------------------------------------------------------------------------------------------------
Snow                      days  0; mean  0.0;             50% snow cover at 09h     days  0; mean  0.0;
Hail                      days  0; mean  0.1;             Ice pellets               days  0; mean  0.0;
Thunder                   days  1; mean  1.9;             Fog at 09h                days  0; mean  0.1;
Gale                      days  0; mean  0.0;
Air frost                 days  0; mean  0.0              Days with 0.2mm rain      days 14; mean 10.9*
Grass minimum frost       days  0; mean  0.0              Days with 1.0mm rain      days  9; mean  7.6*
Soil frost                days  0                         Days with 5.0mm rain      days  2; mean  2.8*
Concrete frost            days  0                         Days with no sun          days  1; mean  1.7

Minimum relative humidity - 41%/22nd;     Air pressure: max - 1029.0mb/6th, min - 1003.5mb/1st

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (02 sky not changing, 03 cloud increasing, 10 mist, 60 intermittent light rain);
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);   SS snow depth (cm);
     Press   air pressure (mb); E    state of ground (0 dry, 1 moist, 2 wet);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evaporation (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;
     G    gale;                    F    fog at 09GMT;
* Averages for Hurley (4km away)
Return to top of document


August 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 8 25 05 21 95 17.9 87 23.2 14.9 14.3 17.1 17.4 18.1 18.3 18.0 17.0 1  0  0.1  2.0 000000 1013.5  0.2  0.0  1.5
02 5 33 02 02 97 18.8 53 23.3 14.3 14.0 16.5 16.5 18.6 19.0 18.1 16.9 1  0  0.0  5.5 000000 1019.0  0.0  0.0  2.3
03 7 05 02 02 97 17.6 73 20.8 13.3 10.9 15.5 16.0 18.5 19.1 18.0 16.8 0  0  4.6  1.0 000000 1019.0  4.5  0.0  1.1
04 7 09 09 03 97 18.7 80 21.2 14.5 13.0 16.5 17.0 17.5 18.6 17.7 16.8 1  0 15.8  0.5 000000 1019.5  3.5  0.0  2.3
05 8 09 05 02 97 18.8 88 23.0 14.8 14.0 17.0 17.5 17.2 18.3 17.3 16.7 1  0  0.0  1.0 000000 1019.5  0.0  0.0  2.6
06 7 05 05 05 96 21.2 76 26.5 15.7 14.5 17.0 17.5 17.6 18.4 17.3 16.6 1  0 32.8  0.5 000100 1015.0  9.5  0.0  1.5
07 7 05 05 61 96 20.5 88 26.7 17.2 15.0 19.0 19.0 18.0 18.7 17.5 16.6 1  0  0.1  2.5 000000 1014.5  0.1  0.0  2.9
08 2 36 02 05 96 22.2 74 30.5 17.1 15.0 19.0 19.0 18.3 19.4 18.0 16.8 1  0  0.0 10.5 000000 1017.0  0.0  0.0  2.6
09 0 27 02 05 95 18.5 89 28.0 17.1 15.0 19.5 19.5 19.4 20.2 18.4 17.0 1  0  0.0  7.5 000000 1020.0  0.0  0.0  1.2
10 1 27 02 05 96 24.5 76 31.3 15.7 13.1 18.0 18.0 19.8 20.3 18.7 17.2 0  0  0.2 11.5 000000 1017.0  0.2  0.0  4.1
11 7 05 02 03 97 24.0 63 28.9 19.5 17.5 20.0 20.5 21.2 20.9 19.0 17.4 0  0  0.0  4.0 000000 1013.5  0.0  0.0  2.1
12 6 27 02 02 97 24.1 72 29.1 17.0 15.0 18.5 19.0 20.9 21.0 19.4 17.6 0  0  4.7  6.5 000000 1021.5  2.0  0.0  2.0
13 8 18 02 21 96 22.1 82 26.5 19.1 17.0 19.5 20.0 21.6 21.2 19.6 17.7 1  0  0.0 10.5 000100 1019.5  0.0  0.0  2.6
14 1 27 02 02 97 19.8 64 26.7 14.2 11.5 16.5 17.0 19.6 20.9 19.5 17.9 0  0  0.0 12.0 000000 1023.0  0.0  0.0  3.1
15 5 00 00 02 97 22.0 69 27.9 13.8 11.0 16.0 17.0 20.0 20.6 19.5 18.0 0  0  0.0 12.5 000000 1021.0  0.0  0.0  2.6
16 0 05 02 02 97 22.3 60 29.4 13.7 11.1 16.0 17.0 20.4 20.5 19.5 18.0 0  0  0.0  1.0 000000 1019.5  0.0  0.0  2.9
17 7 32 02 60 96 21.2 79 23.2 15.6 13.0 17.5 18.5 20.8 20.3 19.5 18.1 0  0  2.2 11.0 000000 1017.5  1.5  0.0  0.9
18 3 00 00 05 95 22.6 74 29.0 15.9 13.3 18.3 19.1 20.2 20.2 19.5 18.1 1  0  0.0  9.9 000000 1018.5  0.0  0.0  2.4
19 6 10 02 41 08 23.6 75 30.3 16.8 14.4 18.8 19.5 20.6 20.5 19.6 18.1 1  0 tr    8.9 000000 1017.5  0.0  0.0  3.3
20 6 00 00 05 96 22.5 73 28.8 16.5 14.0 18.8 19.4 20.6 20.6 19.8 18.2 1  0 tr    2.8 000000 1016.5  0.0  0.0  3.0
21 3 00 00 05 96 22.2 85 26.3 16.2 14.1 18.4 19.4 20.5 20.4 19.6 18.3 0  0  0.2  3.3 000000 1016.0  0.2  0.0  2.3
22 8 00 00 05 96 21.7 89 25.2 19.6 18.5 20.9 20.8 21.1 20.6 19.6 18.3 0  0 tr    0.8 000000 1018.0  0.0  0.0  1.8
23 8 23 05 02 97 20.8 90 25.8 19.5 19.3 20.6 20.9 21.2 20.6 19.7 18.4 0  0  0.0  3.3 000000 1014.5  0.0  0.0  1.7
24 8 20 05 02 97 20.5 91 24.4 19.2 17.9 20.6 20.7 20.9 20.5 19.7 18.4 0  0  4.0  0.3 000000 1011.0  6.5  0.0  1.2
25 8 18 02 61 97 17.8 95 21.9 17.6 17.2 19.5 20.1 20.7 20.4 19.6 18.4 1  0  2.6  1.1 000000 1007.5  2.7  0.0  1.2
26 6 00 00 02 97 17.6 87 20.7 10.1  7.8 14.9 16.1 18.6 19.6 19.4 18.5 1  0  0.3  3.9 000000 1010.5  0.6  0.0  1.9
27 8 21 02 21 97 15.2 91 19.1 13.8 10.6 16.4 17.2 18.2 19.0 19.0 18.4 1  0 21.5  2.0 000100  998.5  5.8  0.0  0.6
28 7 18 02 21 96 16.4 93 20.1 10.9  8.7 14.9 15.5 16.9 18.0 18.3 18.2 1  0  1.6  4.9 000100  995.5  2.2  0.0  1.8
29 6 25 09 02 97 16.9 79 20.5 13.9 12.1 15.4 16.1 17.2 17.9 18.0 18.0 1  0  7.7  6.6 000000 1012.0  6.9  0.0  2.0
30 8 12 02 60 95 18.8 98 19.7 14.6 12.1 17.7 17.5 17.8 18.0 17.9 17.8 1  0 tr    2.5 000000 1015.0  0.0  0.0  0.9
31 8 21 09 02 97 17.2 87 23.2 13.0 10.9 16.6 16.7 17.5 17.9 17.8 17.7 1  0 tr    1.0 000000 1012.0  0.0  0.0  2.2
-----------------------------------------------------------------------------------------------------------------
Mean
    5.8 2.9      20.3 80 25.2 15.6 13.7 17.8 18.2 19.3 19.7 18.8 17.7                       1015.2
Mean
Total                                                                      98.4 151.3              46.4  0.0 64.6
1961-1990 Climatological
Mean5.2 5.3           77 21.7 12.2 10.5 15.6 16.2 17.2 17.2 17.0 16.1      57.5 180.9       1016.4 39
-----------------------------------------------------------------------------------------------------------------
Snow                      days  0; mean  0.0;             50% snow cover at 09h     days  0; mean  0.0;
Hail                      days  0; mean  0.0;             Ice pellets               days  0; mean  0.1;
Thunder                   days  4; mean  1.5;             Fog at 09h                days  0; mean  0.4;
Gale                      days  0; mean  0.0;
Air frost                 days  0; mean  0.0              Days with 0.2mm rain      days 13; mean 12.4*
Grass minimum frost       days  0; mean  0.0              Days with 1.0mm rain      days 10; mean  8.6*
Soil frost                days  0                         Days with 5.0mm rain      days  4; mean  3.4*
Concrete frost            days  0                         Days with no sun          days  0; mean  2.2
Minimum relative humidity - 40%/2nd;     Air pressure: max - 1023.5mb/14th, min - 995.0mb/25th

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (02 sky not changing, 03 cloud increasing, 05 haze, 21 recent rain,
                   41 fog patches, 60 intermittent light rain, 61 continuous light rain);
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);   SS snow depth (cm);
     Press   air pressure (mb); E    state of ground (0 dry, 1 moist, 2 wet);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evaporation (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;    F    fog at 09GMT;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;   G    gale;
* Averages for Hurley (4km away)
Equal 3rd warmest month since 1863 (0.5C cooler than Aug 1995, 0.7C cooler than July 1983, same temp. as Aug 1947.
Return to top of document


September 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 7 22 09 02 97 16.7 78 22.5 14.7 11.8 15.9 16.4 17.6 17.9 17.7 17.6 1  0  0.0  8.0 000000 1015.0  0.0  0.0  1.9
02 2 23 02 02 97 16.4 77 21.0  9.6  6.6 13.9 15.1 17.3 18.1 17.7 17.5 1  0  0.1  8.4 000000 1019.0  0.1  0.0  2.3
03 8 25 02 03 97 16.9 83 18.3 14.6 11.4 16.4 16.7 17.7 18.0 17.8 17.4 1  0  1.3  0.0 000000 1016.5  5.5  0.0  1.2
04 7 25 02 02 97 18.0 81 22.0 15.4 14.2 16.6 16.9 17.6 17.6 17.5 17.3 1  0  0.0  9.7 000000 1017.0  0.0  0.0  2.3
05 8 27 02 02 97 13.4 88 19.3 11.3  8.9 14.6 15.4 17.0 17.9 17.6 17.2 1  0 tr    0.5 000000 1019.0  0.0  0.0  0.8
06 0 00 00 02 97 16.9 78 20.5  9.0  6.0 12.8 13.9 15.9 17.1 17.3 17.2 0  0 tr    8.1 000000 1023.0  0.0  0.0  2.1
07 8 35 02 02 97 16.8 80 22.0 13.8 12.1 15.6 15.6 16.5 17.0 17.1 17.1 0  0  0.0  3.5 000000 1025.5  0.0  0.0  1.4
08 2 36 02 02 97 15.6 75 22.0  8.7  6.4 12.8 14.1 16.1 17.1 16.9 17.0 0  0  0.0 11.6 000000 1026.5  0.0  0.0  2.0
09 0 00 00 02 97 14.3 80 21.4 10.2  7.4 13.3 14.4 16.4 17.1 17.0 16.9 0  0  0.0 11.7 000000 1025.0  0.0  0.0  2.4
10 5 00 00 03 97 12.7 76 20.9  8.1  6.1 12.4 13.7 15.9 16.8 16.9 16.9 0  0  0.0 10.3 000000 1026.0  0.0  0.0  2.0
11 7 12 02 03 96 13.8 84 20.1 11.6  8.5 14.3 14.5 16.0 16.6 16.7 16.8 0  0  0.8  1.2 000000 1012.5  2.3  0.0  1.7
12 7 17 02 03 97 15.4 84 18.1 12.1 10.4 14.2 15.0 16.3 16.7 16.6 16.7 1  0  0.9  5.8 000000 1005.5  0.5  0.0  1.7
13 1 36 02 02 97 14.9 65 17.5  6.4  3.4 10.5 11.9 14.4 15.9 16.3 16.6 0  0  0.0 10.2 000000 1015.0  0.0  0.0  2.4
14 0 35 02 02 97 13.9 66 19.0  5.9  3.3 10.1 11.4 13.9 15.4 15.9 16.5 0  0  0.0  7.7 000000 1025.5  0.0  0.0  1.7
15 7 22 02 03 96 13.6 89 19.3  6.8  4.3 11.2 12.3 14.4 15.4 15.7 16.3 0  0  0.0  3.8 000000 1023.5  0.0  0.0  2.0
16 7 20 02 02 97 17.1 77 21.5  7.9  5.2 11.6 12.5 14.4 15.2 15.5 16.1 0  0  0.0  9.5 000000 1020.0  0.0  0.0  2.5
17 6 32 02 02 96 18.0 82 20.4  9.6  6.3 12.6 13.2 14.9 15.5 15.5 16.0 0  0  0.0  2.3 000000 1021.0  0.0  0.0  1.1
18 9 15 02 43 03 13.1 99 23.7  8.3  5.6 12.8 13.3 14.9 15.5 15.5 15.9 0  0  0.1  6.0 000101 1023.0  0.1  0.0  1.8
19 8 18 02 05 96 16.0 86 17.1 13.1 13.8 15.5 15.7 16.1 16.0 15.7 15.9 0  0 tr    0.0 000000 1025.0  0.0  0.0  1.9
20 7 13 13 02 87 15.3 62 18.9 14.8 12.9 14.7 14.9 15.6 15.7 15.7 15.9 0  0  0.0  4.1 000000 1028.5  0.0  0.0  2.8
21 6 08 02 02 97 14.1 65 19.0  9.2  5.9 11.9 12.8 14.4 15.3 15.5 15.8 0  0  0.0 10.5 000000 1026.0  0.0  0.0  2.3
22 0 00 00 02 96 14.0 74 20.5  7.5  4.3 10.9 12.1 14.0 15.0 15.3 15.7 0  0  0.0 10.3 000000 1025.0  0.0  0.0  2.4
23 0 09 02 05 96 14.5 80 20.6 10.2  5.9 11.6 12.4 14.1 15.0 15.2 15.6 0  0  0.0  9.5 000000 1027.0  0.0  0.0  2.2
24 7 12 02 03 97 15.2 66 20.0  9.0  4.9 12.3 12.8 14.2 15.0 15.2 15.5 0  0  0.0  4.1 000000 1027.5  0.0  0.0  2.1
25 8 09 02 02 97 15.9 78 18.9 15.1 13.8 15.0 15.1 15.7 15.5 15.2 15.5 0  0  0.0  0.7 000000 1027.0  0.0  0.0  1.9
26 8 14 02 05 96 16.0 80 20.9 13.4 10.0 14.8 14.9 15.4 15.5 15.4 15.5 0  0  0.0  4.7 000000 1027.0  0.0  0.0  2.0
27 8 05 05 05 96 15.8 84 18.8 13.5  9.5 14.3 14.6 15.4 15.5 15.3 15.5 0  0  0.0  0.1 000000 1019.5  0.0  0.0  1.2
28 0 00 00 10 95 13.9 89 19.2  8.4  5.6 12.1 12.8 14.6 15.3 15.3 15.5 0  0  0.0  1.1 000000 1017.0  0.0  0.0  0.9
29 8 00 00 05 95 13.8 90 22.3  9.4  6.6 12.8 13.2 14.5 15.1 15.3 15.4 0  0 tr    3.1 000000 1020.0  0.0  0.0  1.3
30 8 00 00 44 08 17.7 95 21.6 13.8 15.6 16.0 15.9 16.0 15.7 15.3 15.4 0  0  0.0  0.1 000000 1023.5  0.0  0.0  0.9
-----------------------------------------------------------------------------------------------------------------
Mean
    5.2 2.2      15.3 80 20.2 10.7  8.2 13.5 14.1 15.6 16.2 16.2 16.3                       1021.7
Total                                                                       3.2 166.6               8.5  0.0 55.2
1961-1990 Climatological
Mean5.7 4.4           83 19.2 10.0  7.9 13.2 13.8 15.0 15.5 15.4 15.3      57.7 137.0       1016.8 40
-----------------------------------------------------------------------------------------------------------------
Snow                      days  0; mean  0.0;             50% snow cover at 09h     days  0; mean  0.0;
Hail                      days  0; mean  0.0;             Ice pellets               days  0; mean  0.0;
Thunder                   days  1; mean  0.9;             Fog at 09h                days  1; mean  0.6;
Gale                      days  0; mean  0.2;
Air frost                 days  0; mean  0.0              Days with 0.2mm rain      days  3; mean 11.5*
Grass minimum frost       days  0; mean  0.3              Days with 1.0mm rain      days  1; mean  8.7*
Soil frost                days  0                         Days with 5.0mm rain      days  0; mean  3.8*
Concrete frost            days  0                         Days with no sun          days  2; mean  2.9
Minimum relative humidity - 49%/13th;     Air pressure: max - 1028.5mb/20th, min - 1004.5mb/12th

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (02 sky not changing, 03 cloud increasing, 05 haze, 10 mist,
          43, 44 fog);
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);   SS snow depth (cm);
     Press   air pressure (mb); E    state of ground (0 dry, 1 moist, 2 wet);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evaporation (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;    F    fog at 09GMT;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;   G    gale;
* Averages for Hurley (4km away)
Second driest September in central Maidenhead since 1859, after 1959 (2mm)
Return to top of document


October 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 5 00 00 02 96 18.6 91 25.2 14.6 11.5 14.3 14.9 15.9 16.0 15.6 15.4 0  0  0.0  8.7 000000 1019.5  0.0  0.0  1.8
02 1 00 00 02 97 15.1 75 20.1 11.0  7.6 13.7 14.7 16.1 16.1 15.7 15.4 0  0  0.0  9.2 000000 1019.5  0.0  0.0  1.9
03 2 27 02 02 97 14.3 80 18.3  9.5  6.1 12.8 13.7 15.1 15.6 15.8 15.6 0  0  0.0  5.2 000000 1021.0  0.0  0.0  1.2
04 7 23 02 02 96 13.8 91 19.7  9.9  6.6 13.1 13.6 14.9 15.4 15.6 15.5 0  0  0.0  6.7 000000 1022.0  0.0  0.0  1.2
05 8 00 00 02 96 11.8 94 17.3  8.6  5.5 12.7 13.0 14.3 15.0 15.4 15.5 0  0  0.0  0.2 000000 1016.0  0.0  0.0  0.8
06 8 00 00 44 06 14.1 95 21.5  8.8  5.8 11.2 12.1 13.8 14.6 15.2 15.4 0  0  9.8  1.9 000000 1003.0 10.2  0.0  1.2
07 8 25 02 21 97 11.6 95 16.8 11.4 10.4 13.6 13.9 14.9 15.0 14.9 15.3 1  0  2.8  5.5 000000  992.0  4.0  0.0  1.1
08 8 20 02 02 96 12.9 96 17.9 11.5  7.9 12.5 12.8 13.9 14.6 14.7 15.2 1  0  5.1  0.0 000000 1000.5  6.3  0.0  0.9
09 7 22 13 02 97 17.1 76 19.0 12.9 14.8 14.6 15.2 15.2 15.0 14.7 15.1 1  0  5.9  1.2 000000 1009.5  2.5  0.0  1.6
10 1 27 09 02 97 13.4 74 17.0 10.1  7.7 12.6 13.4 14.9 15.1 14.8 15.1 1  0  0.1  9.4 000000 1003.0  0.1  0.0  2.1
11 8 22 02 03 97 11.0 92 11.8  9.3  6.0 11.4 11.9 13.4 14.5 14.8 15.0 1  0 12.2  0.0 000000 1007.0 13.4  0.0  0.5
12 7 32 13 01 97 10.0 79 12.9  8.8  5.9 10.5 11.1 12.6 13.8 14.2 15.0 1  0  0.0  6.5 000000 1012.0  0.0  0.0  1.7
13 6 35 09 02 97  8.0 88 11.8  6.0  2.5  8.6  9.6 11.7 13.1 13.7 14.8 1  0  0.3  4.8 000000 1017.0  0.2  0.0  1.4
14 5 30 02 03 97  2.8 95 13.7  1.7 -0.8  6.6  7.7 10.2 12.1 13.1 14.6 1  0 11.3  0.3 000000 1027.0 12.1  0.0  1.2
15 8 35 02 50 94 13.7 96 14.0  2.8  8.4 11.1 11.2 11.4 11.8 12.6 14.2 1  0  0.2  0.5 000000 1011.0  0.1  0.0  0.6
16 8 23 02 02 95 12.4 95 16.5 10.4  8.9 11.0 11.5 12.1 12.4 12.5 13.9 1  0  0.6  0.0 000000 1013.5  0.8  0.0  0.5
17 8 20 02 21 96 16.5 94 19.4 12.4 13.2 13.8 13.4 13.4 12.9 12.7 13.8 1  0  0.1  4.8 000000 1011.5  0.1  0.0  1.1
18 9 00 00 45 04 11.8 97 20.9  8.4  5.4 10.8 11.1 12.4 13.1 13.2 13.9 1  0  0.0  6.8 000000 1018.0  0.0  0.0  0.9
19 0 00 00 02 15 10.3 98 20.3  7.9  5.2 10.3 10.8 12.2 13.1 13.2 13.9 1  0 tr    7.4 000000 1017.0  0.0  0.0  0.8
20 8 09 13 50 95 13.5 92 13.5 10.3  7.2 13.2 13.1 13.2 13.2 13.2 13.8 1  0  0.0  0.0 000000 1016.5  0.0  0.0  2.4
21 1 09 13 02 97  9.5 70 13.0  8.5  5.2  8.8  9.8 11.6 12.8 13.1 13.8 1  0  0.0  9.1 000000 1018.0  0.0  0.0  2.1
22 0 06 02 02 97  4.7 95 13.1  2.3 -0.9  6.4  7.3  9.9 11.9 12.6 13.8 1  0  0.0  9.1 000000 1014.0  0.0  0.0  1.5
23 0 18 02 02 97  6.8 81 13.3  4.7  0.7  7.0  7.8  9.8 11.4 12.1 13.6 1  0  0.0  8.5 000000 1017.0  0.0  0.0  1.7
24 7 18 05 02 97  8.5 67 11.4  6.8  3.7  8.4  8.8 10.1 11.2 11.7 13.3 1  0  0.0  7.5 000000 1026.5  0.0  0.0  1.3
25 5 00 00 02 96  2.9 94 11.9 -0.9 -2.7  4.5  5.6  8.3 10.3 11.3 13.0 1  0  0.0  7.8 000000 1029.5  0.0  4.0  1.0
26 5 00 00 02 97  3.2 95 12.0 -1.9 -3.6  3.9  4.9  7.4  9.5 10.7 12.8 0  0  0.0  5.8 000000 1028.0  0.0  4.5  1.0
27 9 13 02 45 03  7.2 98 12.9  5.1  0.2  6.7  6.9  8.1  9.4 10.3 12.4 0  0  0.0  2.7 000001 1026.5  0.0  0.0  1.3
28 0 09 05 02 97  5.8 52  9.4  0.0 -3.9  3.9  5.1  7.5  9.4 10.2 12.1 0  0  0.0  8.5 000000 1034.0  0.0  0.7  2.1
29 1 08 02 02 97  1.1 70 10.0 -3.8 -6.9  1.8  2.9  5.8  8.2  9.6 12.0 3  0  0.0  8.4 000000 1037.5  0.0 11.4  1.2
30 4 00 00 02 97 -0.3 82  8.9 -3.8 -6.5  1.6  2.4  5.0  7.5  8.9 11.6 3  0  0.0  3.3 000000 1034.0  0.0  9.1  0.8
31 0 27 02 02 96  1.5 92 12.6 -3.0 -5.3  1.9  2.9  5.4  7.3  8.5 11.2 3  0  0.0  8.3 000000 1034.5  0.0  8.0  1.5
-----------------------------------------------------------------------------------------------------------------
Mean
    4.7 3.5       9.8 87 15.4  6.5  4.1  9.5 10.1 11.6 12.6 13.1 14.1                       1017.9
Total                                                                      48.4 158.1              49.8 37.7 40.4
1961-1990 Climatological
Mean5.4 5.1           88 15.3  7.5  5.3 10.1 10.8 11.7 12.4 12.6 13.2      60.4  97.0       1015.7 46
-----------------------------------------------------------------------------------------------------------------
Snow                      days  0; mean  0.0;             50% snow cover at 09h     days  0; mean  0.0;
Hail                      days  0; mean  0.0;             Ice pellets               days  0; mean  0.1;
Thunder                   days  0; mean  0.3;             Fog at 09h                days  1; mean  2.9;
Gale                      days  0; mean  0.3;
Air frost                 days  5; mean  0.6              Days with 0.2mm rain      days  9; mean 14.3*
Grass minimum frost       days  8; mean  3.9              Days with 1.0mm rain      days  6; mean 10.0*
Soil frost                days  3                         Days with 5.0mm rain      days  5; mean  3.8*
Concrete frost            days  6                         Days with no sun          days  4; mean  6.8

Minimum relative humidity - 30%/28th;     Air pressure: max - 1037.5mb/29th,30th, min - 992.0mb/7th

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (01 cloud decreasing, 02 sky not changing, 03 cloud increasing,
          21 recent rain, 44 45 fog, 50 intermittent light drizzle);
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);   SS snow depth (cm);
     Press   air pressure (mb); E    state of ground (0 dry, 1 moist, 2 wet);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evapoartion (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;    F    fog at 09GMT;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;   G    gale;
* Averages for Hurley (4km away)
1st: highest October temperature since 1985; 29/30th lowest October temperatures since before 1951;
30th: lowest October daily maximum since 1987; most air frost days in October since before 1953;
sunniest October since 1921
Return to top of document


November 1997

                        MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR NOVEMBER 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 0 00 00 10 94  0.5 96 11.0 -2.8 -4.9  1.7  2.4  4.9  7.0  8.2 10.9 3  0 tr    5.5 000000 1029.0  0.0  8.6  0.8
02 9 00 00 45 01  3.5100  8.6  0.5 -2.0  4.6  4.5  5.7  6.9  7.8 10.6 0  0  0.3  0.0 000001 1022.5  2.8  0.0  0.6
03 9 07 02 45 03  8.6100 10.8  3.3  0.8  6.4  6.1  6.7  7.3  7.8 10.4 0  0  0.0  2.2 000001 1017.5  0.0  0.0  1.2
04 7 10 02 02 97  6.7 85 13.1  5.9  2.2  5.3  5.6  6.9  7.7  8.1 10.1 0  0  6.8  2.4 000000 1006.0  5.5  0.0  1.0
05 7 16 09 02 97 12.3 93 15.5  6.7  8.8 10.1  9.8  9.0  8.5  8.4 10.1 1  0  4.1  4.5 000000  997.0  5.1  0.0  0.8
06 7 18 02 02 96 10.6 97 13.2 10.3  6.2  9.4  9.2  9.7  9.4  9.1 10.1 1  0  0.6  0.0 000000  985.5  1.1  0.0  0.1
07 8 20 02 02 94  9.4 97 12.5  6.9  3.9  8.8  8.7  9.3  9.5  9.4 10.3 1  0  5.5  1.4 000000  988.5  2.2  0.0  0.7
08 7 25 13 02 97  9.7 79 13.0  8.6  7.2  8.8  8.8  9.4  9.6  9.6 10.5 1  0  5.0  3.3 000000  987.5  2.9  0.0  1.4
09 7 16 05 25 97  7.2 88 10.7  5.9  2.2  7.1  7.3  8.6  9.5  9.6 10.5 1  0  0.3  3.2 000000  985.5  0.4  0.0  0.6
10 1 20 02 02 97  4.5100 11.0  4.0 -0.6  5.2  5.8  7.6  8.9  9.4 10.5 1  0  0.0  4.7 000000  990.5  0.0  0.0  0.5
11 6 18 02 11 96  3.9 98 11.9  2.4 -1.0  5.5  5.7  7.1  8.4  9.0 10.5 1  0  0.0  4.9 000000  993.5  0.0  0.0  0.4
12 0 00 00 46 06  0.5 99 10.5 -0.7 -2.7  3.8  4.4  6.4  8.0  8.7 10.4 1  0  0.0  6.9 000000 1002.5  0.0  5.5  0.5
13 9 00 00 45 02  0.6 99  8.1 -1.1 -3.9  3.3  3.3  5.6  7.3  8.1 10.1 3  0 tr    2.6 000001 1006.0  0.0  6.0  0.1
14 9 00 00 45 03  0.9100 13.1 -0.4 -1.5  3.5  3.8  5.6  7.0  7.7 10.0 1  0  0.9  0.0 000000 1010.0  4.0  2.5  0.4
15 8 18 02 02 97 13.1 96 14.8  0.9 10.0  9.3  8.6  8.2  7.6  7.7  9.7 1  0  3.3  0.0 000000 1011.5  4.0  0.0  0.1
16 8 19 02 02 97 14.7 96 15.6 13.1 11.6 11.2 10.5 10.0  9.0  8.5  9.6 1  0 tr    0.1 000000 1013.0  0.0  0.0  0.5
17 8 20 02 02 96 13.1 94 15.4 12.1  8.4 10.6 10.3 10.3  9.8  9.2  9.8 1  0  0.1  0.1 000000 1012.0  0.3  0.0  1.1
18 6 18 05 80 97 11.1 93 12.7 11.0  7.9 10.0 10.1 10.5 10.3  9.6 10.0 1  0  5.1  0.0 000000 1002.0  7.0  0.0  0.2
19 7 22 05 02 97 11.5 94 12.8  9.4  3.6  9.3  9.3 10.0 10.2  9.9 10.2 1  0 13.7  0.4 000000  996.5  9.8  0.0  0.3
20 8 17 09 63 95 10.5 95 11.9  8.1  3.4  9.6  9.4  9.8 10.1  9.9 10.4 2  0  1.9  1.1 000000  987.5  2.6  0.0  0.4
21 8 22 02 60 97  7.5 98 10.2  3.1 -0.1  6.7  7.1  8.7  9.8  9.9 10.5 1  0  2.1  1.6 000000 1003.5  1.7  0.0  0.3
22 1 21 02 02 97  5.4 97 11.5  3.1 -0.9  5.0  5.6  7.4  8.9  9.5 10.4 1  0  2.2  6.4 005100 1012.5  0.2  0.0  0.2
23 1 00 00 02 94  4.0 98 10.3  2.2 -1.5  5.3  5.5  7.1  8.5  9.1 10.3 1  0  0.4  3.2 000000 1017.0  0.4  0.0  0.5
24 8 15 02 60 96  8.7 81  8.9  4.0  6.3  7.9  7.7  8.1  8.5  8.7 10.1 1  0  1.4  0.0 000000 1011.5  2.8  0.0  0.7
25 8 14 09 02 96  6.5 88  9.4  5.7  4.4  6.5  6.6  7.6  8.4  8.7 10.0 1  0  0.2  0.0 000000 1003.5  0.9  0.0  0.4
26 8 15 02 02 94  9.4 95 10.4  6.5  5.2  7.8  7.9  8.4  8.6  8.6 10.0 1  0  7.8  0.0 000000 1007.0  8.9  0.0  0.5
27 8 21 02 21 94  9.9 97 10.9  8.7  7.7  8.8  8.6  8.8  8.9  8.8  9.9 1  0  8.0  0.3 000000 1007.0  6.9  0.0  0.2
28 8 17 02 63 94 10.9 94 13.1  6.2  1.6  9.3  8.8  9.0  9.0  8.8  9.9 1  0  0.1  2.0 000000 1000.0  0.2  0.0  1.2
29 4 24 02 02 97  7.9 93 11.8  7.8  4.3  7.2  7.6  8.9  9.1  9.1  9.9 1  0  2.5  3.0 000000 1000.5  5.8  0.0  0.8
30 8 32 13 02 97  8.9 80  8.9  7.9  4.4  8.3  8.3  8.9  9.1  9.2  9.9 1  0 tr    0.0 000000 1010.5  0.0  0.0  0.9
-----------------------------------------------------------------------------------------------------------------
Mean
   6.0  3.3       7.7 94 11.7  5.3  3.0  7.2  7.2  8.1  8.7  8.9 10.2                       1003.9
Total                                                                      72.3  59.8              75.5 22.6 17.4
Climatological
Mean5.6  5.5          89 10.4  3.8  1.7  6.1  6.7  7.7  8.6  9.2 10.6      62.3  60.4       1014.6 53
-----------------------------------------------------------------------------------------------------------------
Snow                      days  0; mean  0.6;             50% snow cover at 09h     days  0; mean  0.1;
Hail                      days  1; mean  0.1;             Ice pellets               days  0; mean  0.1;
Thunder                   days  1; mean  0.2;             Fog at 09h                days  3; mean  3.4;
Gale                      days  0; mean  0.2;
Air frost                 days  4; mean  5.6              Days with 0.2mm rain      days 20; mean 15.0*
Grass minimum frost       days 10; mean 11.1              Days with 1.0mm rain      days 14; mean 10.6*
Soil frost                days  2                         Days with 5.0mm rain      days  7; mean  4.4*
Concrete frost            days  4                         Days with no sun          days  9; mean 10.3

Minimum relative humidity - 61%/8th;     Air pressure: max - 1030.0mb/1st, min - 982.0mb/8th

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (02 sky not changing, 10 mist, 11 shallow fog, 21 recent rain, 25 recent rain shower,
          45, 46 fog, 60 intermittent light rain, 63 continuous moderate rain, 80 light rain shower);
09GMT observations...
     Temp temperature (degC);      RH   relative humidity (%);   SS snow depth (cm);
     Press   air pressure (mb); E    state of ground (0 dry, 1 moist, 2 wet, 3 frozen);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evaporation (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;    F    fog at 09GMT;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;   G    gale;
* Averages for Hurley (4km away)
Return to top of document


December 1997

                        MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR DECEMBER 1997

                 -09GMT- --Temperature- --Soil temps-- -Earth temps--                              Rain  Fr. Pch
DD N dd ff ww VV Temp RH  Max  Min Gmin  5cm 10cm 20cm 30cm 50cm   1m E SS Rain  Sun SLHTGF  Press  hrs  hrs Evap
-----------------------------------------------------------------------------------------------------------------
01 7 00 00 03 96  1.0 98  5.0 -0.3 -3.4  3.9  4.6  6.8  8.4  8.9  9.9 1  0  4.1  0.0 000000 1017.5  7.2  1.0  0.3
02 8 09 09 02 97  1.2 89  3.9  1.0 -2.4  3.9  4.4  6.2  7.7  8.3  9.9 1  0  0.0  2.6 000000 1011.0  0.0  0.0  0.8
03 6 36 09 02 97  1.5 89  4.0 -0.2 -3.7  2.2  2.7  4.7  6.8  7.7  9.6 1  0  0.0  0.0 000000 1019.5  0.0  0.5  0.5
04 7 03 02 02 96  2.4 95  6.1  1.5 -2.3  2.6  3.4  4.8  6.3  7.1  9.4 1  0  0.0  4.5 000000 1024.0  0.0  0.1  0.4
05 9 00 00 45 02 -0.5 99  7.8 -1.5 -4.1  1.4  2.1  3.9  5.8  6.7  9.0 3  0  0.0  1.3 000001 1025.5  0.0  9.3  0.6
06 8 22 02 02 97  7.8 83 11.0 -0.5 -0.8  3.9  3.4  4.3  5.5  6.3  8.7 1  0  0.0  0.9 000000 1020.5  0.0  0.0  0.9
07 8 25 05 02 97  8.2 79 11.5 -1.2  1.0  6.1  5.7  6.0  6.1  6.4  8.5 1  0  1.7  0.1 000000 1014.5  3.8  0.0  0.9
08 7 22 09 02 97 11.5 85 12.9  8.2  6.4  7.4  7.1  7.2  6.9  6.8  8.4 1  0  0.1  3.9 000000 1000.0  0.3  0.0  1.0
09 7 24 02 02 97  8.5 81 13.1  7.5  3.5  6.6  6.5  7.6  7.5  7.1  8.5 1  0  6.8  0.0 000000 1006.5  8.0  0.0  0.7
10 8 22 09 21 97 13.1 95 14.8  8.5 10.1 10.1  9.4  8.9  8.0  7.6  8.5 1  0  2.4  3.5 000000  998.0  1.3  0.0  1.3
11 8 27 05 80 96 12.2 89 13.8 11.3  7.9  9.8  9.4  9.1  8.7  8.2  8.6 1  0  0.9  3.4 000000 1000.5  0.7  0.0  1.5
12 0 31 05 02 97  5.5 82  8.9  5.4  1.3  5.9  6.4  8.1  8.6  8.4  8.9 1  0  0.0  7.1 000000 1021.0  0.0  0.0  0.9
13 4 00 00 02 97  0.7 98  8.0 -0.7 -3.9  2.3  3.0  5.4  7.5  8.1  9.0 3  0  0.0  2.0 000000 1032.0  0.0  3.5  0.2
14 7 03 02 02 95  4.9 95 10.3  0.7  1.4  4.9  4.9  5.9  7.0  7.4  8.9 1  0  0.0  5.4 000000 1032.5  0.0  0.0  0.5
15 7 09 05 02 97  4.4 83  5.5  3.5  1.0  3.9  4.2  5.6  6.9  7.3  8.8 1  0  0.0  0.1 000000 1033.0  0.0  0.0  2.0
16 7 09 13 02 97  3.0 70  3.0  3.0  1.8  3.4  3.6  5.1  6.5  7.0  8.6 1  0  1.4  0.0 502000 1025.0  2.0  3.4  1.1
17 8 12 13 02 97  1.9 90  7.7 -0.4 -0.6  2.2  2.2  4.0  5.6  6.5  8.4 5 <1  9.4  0.0 500000 1005.5  6.1  0.2  0.4
18 8 14 09 61 95  7.7 96  9.5  1.9 -0.5  5.1  4.4  4.7  5.2  5.9  8.2 1  0  4.3  0.0 000000  997.0  4.5  0.0  0.0
19 8 20 02 02 94  7.6 99  8.3  6.9  5.6  6.7  6.2  6.4  6.1  6.1  7.9 1  0 tr    0.0 000000  998.0  0.0  0.0  0.1
20 8 15 02 02 94  8.3 97  9.4  7.1  5.7  7.0  6.6  6.8  6.5  6.5  7.9 1  0 tr    0.0 000000 1002.5  0.0  0.0  0.4
21 8 03 02 20 95  5.8 95  6.4  5.8  5.6  6.7  6.6  7.0  6.9  6.8  7.9 1  0  0.1  0.0 000000 1014.5  0.1  0.0  0.1
22 8 21 02 02 96  6.4 95  8.0  4.5  4.4  6.1  5.9  6.5  7.0  6.9  8.0 1  0  6.7  0.0 000000 1014.5  9.0  0.0  0.5
23 8 13 02 02 94  8.0 97 13.2  6.4  5.2  6.4  6.5  6.9  7.0  6.9  8.0 1  0  3.2  0.9 000000 1016.0  4.2  0.0  0.4
24 8 23 05 02 97 12.6 96 13.5  8.0  6.7  9.2  8.7  8.5  7.8  7.2  8.0 1  0  4.6  0.0 000000 1014.0  5.9  0.0  1.5
25 8 22 05 03 97 10.8 85 12.0  7.9  3.3  7.5  7.7  7.8  8.0  7.7  8.2 1  0  5.3  0.4 000000 1003.0  3.8  0.0  1.5
26 7 26 09 02 97  7.4 86  9.6  7.4  4.0  6.7  6.7  7.4  7.9  7.8  8.3 1  0 tr    1.9 000000  999.5  0.0  0.0  0.7
27 3 31 02 02 97  3.1 96  8.6  2.4 -2.1  3.9  4.4  6.1  7.4  7.7  8.4 1  0  0.0  0.4 000000 1009.0  0.0  0.0  0.4
28 7 00 00 03 97  0.7 94  6.2 -0.7 -5.2  2.2  2.6  4.7  6.6  7.2  8.4 3  0  0.6  0.1 000000 1013.0  1.0  2.5  0.2
29 2 00 00 02 96  0.6 98  8.8 -0.3 -4.4  2.3  2.8  4.7  6.2  6.7  8.3 1  0  1.7  0.0 000000 1010.5  4.7  1.0  0.4
30 8 21 02 20 97  8.8 97 11.7  0.6  5.5  6.6  6.0  6.2  6.3  6.5  8.0 1  0  3.5  2.2 000000 1004.5  4.6  0.0  0.8
31 7 27 02 02 97  6.4 91  9.2  6.4  2.8  6.4  6.7  7.4  7.1  6.8  8.0 1  0  2.7  5.9 000000 1002.0  1.8  0.0  0.5
-----------------------------------------------------------------------------------------------------------------
Mean
   6.8  4.3       5.9 91  9.1  3.6  1.6  5.3  5.3  6.3  7.0  7.2  8.6                       1012.4
Total                                                                      59.5 46.6              69.0  21.5 21.5
Climatological Mean
   6.0  5.7           89  7.8  2.0  0.0  4.3  4.5  5.3  6.0  6.7  8.1      64.0 39.7       1015.0 59
-----------------------------------------------------------------------------------------------------------------
Snow                      days  2; mean  1.9;             50% snow cover at 09h     days  0; mean  1.5;
Hail                      days  0; mean  0.1;             Ice pellets               days  0; mean  0.3;
Thunder                   days  0; mean  0.2;             Fog at 09h                days  1; mean  2.2;
Gale                      days  0; mean  0.2;
Air frost                 days  9; mean  8.8              Days with 0.2mm rain      days 16; mean 16.2*
Grass minimum frost       days 12; mean 15.9              Days with 1.0mm rain      days 14; mean 11.2*
Soil frost                days  7                         Days with 5.0mm rain      days  4; mean  5.2*
Concrete frost            days  8                         Days with no sun          days 12; mean 15.0

Minimum relative humidity - 69%/16th;     Air pressure: max - 1034.0mb/15th, min - 994.0mb/31st

Key
DD: date
07GMT observations...
     N    cloud cover (oktas, 9=obscured);    dd      wind direction (degrees/10);       ff   wind speed (knots);
     VV   visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good);
     Soil temperatures are for 07GMT beneath a bare soil surface (degC);
     Earth temperatures are for 07GMT beneath a grass surface (degC); SS  snow depth (cm)
     ww   present weather code (02 sky not changing, 03 cloud increasing, 10 mist, 20 recent drizzle,
          21 recent rain, 45 fog, 61 continuous light rain, 80 light rain shower);
09GMT observations...
     Temp temperature (degC);  RH relative humidity (%); SS snow depth (cm); Press   air pressure (mb);
     E    state of ground (1 moist, 2 wet, 3 frozen, 4 ice, 5 <50% snow cover, 6 >50% snow cover);
24 hour readings...
     Max  maximum temperature (degC) beginning 09GMT,    Min  minimum temperature (degC) ending 09GMT;
     Gmin grass minimum temperature (degC) ending 09GMT; Pch Evap  Piche evaporation (ml) beginning O9GMT;
     Rain rainfall beginning 09GMT (mm);     Sun  sunshine (hours) sunrise-sunset;
     Rain hrs  hours of rainfall (>0.1mm/hr) 09-09GMT;      Fr. hrs   hours of air frost (00-24GMT)
Days with...
     S    snow/sleet falling;      L    50% snow cover at 09GMT;      H>4  hail falling;    F    fog at 09GMT;
     H<5  ice pellets, snow grains, snow pellets falling;             T    thunder heard;   G    gale;
* Averages for Hurley (4km away)
Return to top of document


Annual 1997

Monthly and annual summary statistics for 1997 at Boyn Hill (Maidenhead, Berkshire)

Comparison with recent years of annual values
     --------Temperature (degC)--------  -Rainfall (mm)-  Sunshine (hrs) Days with               Piche
     Mean              Max   Min  Grass  Total  >=   >=   Total   no     AF  GF  SF  SL  T  F09  Evaporation
     Air   30cm  100cm Air   Air  Min           0.2  1.0          sun                            (ml)
1988 10.6  10.9  10.9  29.2  -5.1  -8.5  617.8  155  112  1420.0  74     28  89   7   0  12   8  -
1989 11.7  11.9  11.8  33.0  -6.3 -10.4  604.3  145  106  1802.8  60     35  88   4   0  15  13  -
1990 11.6  11.9  11.8  35.3  -4.1  -7.2  492.5  132  101  1772.3  50     21  92   5   1  11   7  -
1991 10.5  10.7  10.7  28.5  -8.4 -13.9  527.2  145   96  1364.3  80     49  95  10   9  10  13  -
1992 10.9  11.2  11.1  29.5  -6.2  -9.5  712.6  170  118  1328.7  80     43  91   5   1  15  14  -
1993 10.6  10.9  10.9  27.4  -4.8  -7.8  681.5  151  112  1333.1  78     31  83   8   0  12  11  555.8
1994 11.4  11.4  11.2  31.9  -5.2  -7.6  649.0  172  131  1445.9  81     27  81   7   3   9  11  581.5
1995 11.7  12.1  11.9  33.9  -5.3  -7.8  627.7  141  105  1640.7  71     44  70  15   2  16   8  675.4
1996 10.3  10.7  10.6  31.4  -4.8  -8.3  500.9  133   88  1496.4  75     57  96  21   8   8   8  614.6
1997 11.5  11.6  11.4  31.3  -5.3  -9.1  553.0  139  105  1630.0  68     43  83   7   0  13  15  579.7

(AF=air frost, GF=ground frost, SF=snow falling, SL:>=50 per cent snow cover at 09GMT, T=thunder, F09=fog at 09GMT)

     Cloud amount   Wind speed     Humidity            Grass minimum temperature
     (oktas)        at 07h (kts)   at 09h (%)          (degC)
     Mean Anomaly   Mean Anomaly   Mean Anomaly        High Low  Mean Anomaly
J    6.8   1.3      3.4  -3.3      88   -1              5.2 -9.1 -2.1 -1.3 Lowest grass min temperature for 5 years
F    6.5   0.8      7.1   0.6      88    0              9.2 -7.2  1.4  2.7 
M    5.5  -0.5      3.5  -2.8      87    4              9.4 -2.7  2.6  2.6 
A    5.4   0.3      3.7  -2.4      73   -4             10.0 -5.4  1.9 -0.1 
M    4.6  -0.3      5.2  -1.2      76    3             12.6 -3.9  4.9 -0.7 
J    6.5   1.2      5.3  -0.3      80    8             15.5  5.2 10.4  1.4 
J    6.2   1.2      3.0  -2.5      76    3             15.1  7.5 11.3  0.5 
A    5.8   0.6      2.9  -2.4      80    3             19.3  7.8 13.7  3.2 
S    5.2  -0.5      2.2  -2.2      80   -3             14.2  3.3  8.2  0.3 
O    4.7  -0.7      3.5  -1.6      87   -1             14.8 -6.9  4.1 -1.2 
N    6.0   0.4      3.3  -2.2      94    5             11.6 -4.9  3.0  1.3 
D    6.8   0.8      4.3  -1.4      91    2             10.1 -5.2  1.6  1.6 
1997 5.8   0.3      3.9  -1.9      83    1             19.3 -9.1  5.1  0.8 

     Maximum temperature      Minimum temperature      Monthly mean
     (degC)                   (degC)                   Temperature (degC)
     High Low  Mean Anomaly   High Low  Mean Anomaly   Mean Anomaly
J    10.9 -0.6  5.1 -2.0       5.4 -5.3  0.1 -1.0       2.6 -1.5 coldest Jan since 1983
F    13.6  5.8 10.4  2.6       8.9 -4.1  3.9  2.6       7.1  2.6
M    17.7 10.0 13.9  3.2       9.5  0.3  5.0  2.3       9.5  2.8 Mildest March since 1957
A    21.9  9.5 15.6  2.1      11.7 -2.4  4.9  0.1      10.3  1.1
M    26.0  9.7 18.5  1.4      14.8 -0.9  7.7 -0.2      13.1  0.6 Lowest May minimum for 17 years
J    26.1 12.9 19.8 -0.2      16.4  7.2 11.9  1.2      15.9  0.5 Coolest June for 6 years
J    27.9 16.2 23.5  1.4      16.4  9.9 13.3  0.8      18.4  1.1
A    31.3 19.1 25.2  3.5      19.6 10.1 15.6  3.4      20.4  3.5 Equal 3rd hottest month since 1863
S    23.7 17.1 20.2  1.0      15.4  5.9 10.7  0.7      15.5  0.9
O    25.2  8.9 15.4  0.1      14.6 -3.8  6.5 -1.0      10.9 -0.5 Highest Oct max since 1985, lowest Oct min since 1951
N    15.6  8.1 11.7  1.3      13.1 -2.8  5.3  1.5       8.5  1.4
D    14.8  3.0  9.1  1.3      11.3 -1.5  3.6  1.6       6.3  1.4
1997 31.3 -0.6 15.7  1.3      19.6 -5.3  7.4  1.0      11.5  1.1 Fourth warmest year on record (since 1859)

     Soil temperatures recorded at 07h (degC)
     ------5cm depth-------   ------10cm depth------   ------20cm depth------
     High Low  Mean Anomaly   High Low  Mean Anomaly   High Low  Mean Anomaly
J     5.1 -1.8  1.3 -2.0       4.4 -1.3  1.1 -2.2       4.4  0.2  2.0 -2.1 Lowest 5cm reading (-1.8) for over 9 years
F     8.1  0.8  5.0  2.1       7.3  1.5  4.8  1.5       7.5  2.9  5.5  1.4
M    10.2  4.9  7.2  2.6       9.8  5.1  7.4  2.5      10.1  6.1  8.4  2.6
A    12.6  4.0  8.3  1.1      12.2  5.4  8.8  1.1      12.3  7.9 10.1  1.9
M    16.6  5.5 11.1  0.4      15.9  6.9 11.4  0.7      15.9  9.8 12.8  0.7
J    18.0 12.9 15.1  0.8      18.2 12.0 15.4  0.9      18.2 13.7 16.2  0.6
J    18.8 13.8 16.5  0.5      19.3 13.9 16.9  0.5      20.1 14.7 17.9  0.6
A    20.9 14.9 17.8  2.2      20.9 15.5 18.2  2.0      21.2 16.9 19.3  2.1
S    16.6 10.1 13.5  0.3      16.9 11.4 14.1  0.3      17.7 13.9 15.6  0.6
O    14.6  1.6  9.5 -0.6      14.9  2.4 10.1 -0.7      16.1  5.0 11.6 -0.1 Lowest 5cm October reading (1.6) for over 9 years
N    11.2  1.7  7.2  1.1      10.5  2.4  7.2  0.5      10.5  4.9  8.1  0.4
D    10.1  1.4  5.3  1.0       9.4  2.1  5.3  0.8       9.1  3.9  6.3  1.0
1997 20.9 -1.8  9.8  0.7      20.9 -1.3 10.1  0.7      21.6  0.2 11.2  0.8

     Earth temperatures recorded at 07h (degC)
     ------30cm depth------   ------50cm depth------   ------100cm depth-----
     High Low  Mean Anomaly   High Low  Mean Anomaly   High Low  Mean Anomaly
J     4.2  1.5  2.7 -2.0       3.9  1.7  2.8 -2.6       5.3  3.9  4.5 -2.1 Coldest Jan at 30cm for 12 years
F     7.4  3.1  5.7  1.1       7.0  3.9  5.4  0.3       6.9  4.9  5.8 -0.2
M     9.9  6.9  8.6  2.7       9.0  6.8  8.2  2.0       8.9  6.9  8.0  1.6 Warmest March at 30cm for over 42 years
A    12.0  9.2 10.4  1.7      11.2  9.0 10.0  1.7      10.2  8.9  9.6  1.6
M    15.9 11.4 13.2  1.0      14.6 11.1 12.4  1.2      12.6 10.4 11.4  1.3
J    17.6 14.1 16.2  1.0      16.4 14.0 15.4  1.3      14.8 12.8 14.2  1.7
J    19.5 14.7 17.8  0.5      18.5 14.3 17.0  0.7      16.9 14.0 15.6  0.5
A    21.2 17.9 19.7  2.5      19.8 17.1 18.8  1.8      18.5 16.6 17.7  1.6
S    18.1 15.0 16.2  0.7      17.8 15.2 16.2  0.8      17.6 15.4 16.3  1.0
O    16.1  7.3 12.6  0.2      15.8  8.5 13.1  0.5      15.6 11.2 14.1  0.9
N    10.3  6.9  8.7  0.1       9.9  7.7  8.9 -0.3      10.9  9.6 10.2 -0.4
D     8.7  5.2  7.0  1.0       8.9  5.9  7.2  0.5       9.9  7.9  8.6  0.5
1997 21.2  1.5 11.6  0.9      19.8  1.7 11.3  0.6      18.5  3.9 11.4  0.7

Rainfall (mm)                                               
     Total  Per   Max    ---------Number of days with---------------
            Cent  Fall   >=0.2 Anomaly  >=1.0 Anomaly  >=5.0 Anomaly
J     12.8   22    5.2    7   -10.2      5    -6.9      1    -3.8 Driest January for 10 years
F     65.7  167   10.6   16     3.4     14     5.6      6     3.0
M     11.6   22    7.1    7    -8.3      3    -7.6      1    -2.9 Driest March since 1990
A     15.3   33   13.1    3   -11.1      2    -8.1      1    -2.4
M     47.4   88    9.1   13    -0.7     11     0.7      4     0.4
J     77.8  148   13.7   18     6.5     16     7.8      6     2.4 Wettest June for 6 years
J     40.6   87    9.2   14     3.1      9     1.4      2    -0.8
A     98.4  171   32.8   13     0.6     10     1.4      4     0.6 Wettest Aug day (32.8mm) for over 16 years
S      3.2    6    1.3    3    -8.5      1    -7.7      0    -3.8 2nd driest September since 1859, after 1959
O     48.4   80   12.2    9    -5.3      6    -4.0      5     1.2
N     72.3  116   13.7   20     5.0     14     3.4      7     2.6 Most Nov. raindays for over 16 years
D     59.5   93    9.4   16    -0.2     14     2.8      4    -1.2
1997 553.0   85   32.8  139   -25.7    105   -11.2     41    -4.7

     Sunshine (hours)                        Number of days with
     Total  Per   24hr   Sunless days        Gale           Fog at 09h
            Cent  Max    Total  Anomaly           Anomaly        Anomaly
J      54.3 117    7.8   16      2.0         0    -0.7      5     2.5
F      56.6  87    6.9    9     -0.5         0    -0.4      0    -2.0
M     138.0 130   11.0    7      0.6         0    -0.4      4     3.2 Foggiest March since 1986
A     200.1 142   12.9    2     -1.4         0     0.0      0    -0.1 Sunniest April for 7 years
M     246.9 132   14.9    3      0.7         0     0.0      0    -0.1 Sunniest May for 5 years
J     128.6  67   14.9    3      0.9         0     0.0      0    -0.1
J     223.1 117   14.1    1     -0.7         0     0.0      0    -0.1
A     151.3  84   12.5    0     -2.2         0     0.0      0    -0.4
S     166.6 122   11.7    2     -0.9         0     0.0      1     0.4 Sunniest Sept. since 1964
O     158.1 163    9.4    4     -2.8         0    -0.3      1    -1.9 Sunniest October since 1921
N      59.8  99    6.9    9     -1.3         0    -0.2      3    -0.4
D      46.6 117    7.1   12     -3.0         0    -0.2      1    -1.2
1997 1630.0 113   14.9   68     -8.6         0    -2.2     15    -0.2 Foggiest year since 1987, least sunless days since 1990

     Number of days with
     Snow falling   50% snow cover ---Hail-----   Ice Pellets    Thunder heard
                    at 09h         
          Anomaly        Anomaly        Anomaly        Anomaly        Anomaly
J     4    0.4      0    -3.5      0     0.0      0    -0.3      0    -0.3
F     0   -3.4      0    -2.1      0    -0.2      0    -0.4      0    -0.2 First snowless Feb since 1984
M     0   -2.7      0    -0.6      0    -0.5      3     2.5      0    -0.5
A     0   -1.0      0    -0.1      0    -0.6      0    -0.3      0    -0.6
M     1    0.9      0     0.0      2     1.7      0    -0.1      4     2.2
J     0    0.0      0     0.0      0    -0.1      0     0.0      2    -0.3
J     0    0.0      0     0.0      0    -0.1      0     0.0      1    -0.9
A     0    0.0      0     0.0      0     0.0      0     0.0      4     2.5
S     0    0.0      0     0.0      0     0.0      0     0.0      1     0.1
O     0    0.0      0     0.0      0     0.0      0    -0.1      0    -0.3
N     0   -0.6      0    -0.1      1     0.9      0    -0.1      1     0.8
D     2    0.1      0    -1.5      0    -0.1      0    -0.3      0    -0.2
1997  7   -6.3      0    -7.9      3     1.0      3     0.9     13     2.3

     Air Pressure (millibar)                 Number of days with
                         Mean at 09h         Air frost      Ground frost
     High      Low               Anomaly          Anomaly        Anomaly
J    1042.5    1007.5    1023.5   8.4        17    5.5      24     6.2
F    1033.5     979.0    1016.2   0.7         6   -4.0       9    -8.7
M    1036.0    1007.0    1024.8   9.8         0   -6.4       9    -6.5 First air-frost-free March since 1981
A    1033.0    1005.0    1023.8   8.6         1   -1.1      10     0.8
M    1031.5     987.5    1014.9  -0.3         1    0.8       1    -1.0
J    1024.5     991.5    1009.7  -7.3         0    0.0       0     0.0
J    1029.0    1003.5    1018.2   0.7         0    0.0       0     0.0
A    1023.5     995.0    1015.2  -1.2         0    0.0       0     0.0
S    1028.5    1004.5    1021.7   4.9         0    0.0       0    -0.3
O    1037.5     992.0    1017.9   2.2         5    4.4       8     4.1 Most October air frosts since before 1953
N    1030.0     982.0    1003.9 -10.7         4   -1.2      10    -1.1 Loest mean presure since 1963
D    1034.0     994.0    1012.4  -2.6         9    0.2      12    -3.9
1997 1042.5     979.0    1016.9   1.1        43   -2.2      83   -10.4

     Number of hours with               Piche evaporation (ml)
     Rain falling        Air frost      Monthly   Daily
     Total     Anomaly   Total          total     Max
J     19.8     -37.2     193.8           15.0      1.5
F     65.0      22.0      22.7           32.3      2.3
M     17.4     -39.6       0.0           46.6      3.3
A     18.8     -26.2       3.7           67.9      3.4
M     48.5       2.5       2.0           73.6      5.5
J     65.2      24.2       0.0           68.9      6.6
J     31.9      -3.1       0.0           76.3      4.5
A     46.4       7.4       0.0           64.6      4.1
S      8.5     -31.5       0.0           55.2      2.5
O     49.8       3.8      37.7           40.4      2.4
N     75.5      22.5      22.6           17.4      1.4
D     69.0      10.0      21.5           21.5      2.0
1997 515.8     -45.2     304.0          579.7      6.6

Number of days in 1997 when certain conditions observed at 07h

                       1997 1996 1995 1994                         1997 1996 1995 1994
Cloud obscured           14    5    5    6             Wind N        24   44   43   28
8/8 cloud               144  147  139  152             NE            32   34   36   22
6/8 to 7/8 cloud        106   99   99  108             E             34   61   43   45
3/8 to 5/8 cloud         29   31   33   41             SE            23   26   31   22
1/8 to 2/8 cloud         40   45   36   27             S             51   47   36   47
Sky cloudless            32   39   53   31             SW            55   43   60   82
                                                       W             58   41   48   67
Visibility < 100m         0    0    0    0             NW            32   29   39   28
           100-190m       4    2    1    2             calm          56   41   29   24
           200-390m       8    2    6    4             force 1-3    285  290  309  320
           400-900m      11   10    8    9             force 4-5     24   32   27   20
           1.0-1.9km     17   19   13   19             force 6-7      0    3    0    1
           2.0-3.9km     20   35   23   35             force 8-12     0    0    0    0
           4-9km         73   73   78   73
           10km or more 232  225  236  223

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Last updated 7 January 1998. This page is maintained by brugge@met.reading.ac.uk
© 1998 Roger Brugge