| Annual Climatological Register - 2002 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Temperatures | ||||||||||||
| Mean Max (C) | 8.4 | 10.3 | 12.1 | 14.7 | 16.5 | 19.6 | 21.5 | 22.3 | 19.1 | 13.8 | 11 | 7.2 |
| Highest Max (C)(& date) | 13.1 (27) | 14 (11) | 17.3 (30) | 22 (23) | 23.7 (16) | 25 (2) | 30.7 (29) | 30.8 (17) | 23.1 (5) | 22.5 (1) | 14.7 (2) | 13 (24) |
| Lowest Max (C)(& date) | 1.8 (2) | 7.1 (16,23) | 7.5 (2) | 9.8 (9) | 11.9 (9) | 15.2 (5) | 15.7 (1) | 16.6 (26) | 15.5 (15) | 9 (30) | 6.4 (18) | 1.4 (11) |
| Mean Min (C) | 2 | 3.2 | 3.1 | 4.4 | 7.7 | 9.9 | 11.8 | 12.9 | 10.3 | 6.2 | 5.4 | 3.5 |
| Highest Min (C)(& date) | 9.5 (21) | 10.4 (2) | 8.9 (21) | 9.1 (1) | 12.3 (21) | 14.8 (17) | 17.6 (30) | 16.7 (1) | 15.6 (12) | 15.4 (2) | 10.1 (6) | 8.6 (24,27) |
| Lowest Min (C)(& date) | -7 (4) | -2 (15) | -2.5 (2) | 0 (14) | 2.3 (5) | 6.5 (29) | 8 (10) | 8.5 (26) | 6.2 (1) | -0.3 (20) | -0.5 (18) | -1.5 (11) |
| Mean Temp (C) | 5.2 | 6.8 | 7.6 | 9.6 | 12.1 | 14.8 | 16.7 | 17.6 | 14.7 | 10 | 8.2 | 5.4 |
| Days with Air Frost | 6 | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 5 |
| Air Frost Duration (hrs) | 77 | 21 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0.5 | 0.7 | 25 |
| RH (%) | 93.2 | 88.5 | 87.9 | 80.1 | 80.8 | 74.7 | 79.2 | 80.7 | 81.2 | 89.3 | 96.6 | 94.5 |
| Rainfall | ||||||||||||
| Total (mm) | 40.6 | 56.5 | 35.8 | 45.2 | 55.2 | 24.3 | 87.6 | 33.9 | 34.1 | 117.8 | 92.3 | 97.2 |
| Rain Days | 18 | 23 | 11 | 8 | 16 | 12 | 14 | 11 | 4 | 18 | 22 | 25 |
| Wet Days | 12 | 16 | 7 | 8 | 12 | 7 | 13 | 8 | 2 | 14 | 18 | 17 |
| Wettest Day (& date) | 8.5 (26) | 12 (19) | 14.1 (18) | 9.9 (27) | 15.5 (21) | 7.8 (5) | 26.7 (30) | 9.6 (7) | 25.9 (9) | 49.9 (15) | 13 (12) | 21.4 (21) |
| Duration (hrs) | 33.4 | 48.5 | 30.8 | 29.6 | 44.3 | 26.8 | 41.9 | 20.6 | 10.6 | 60.3 | 69.8 | 85.8 |
| Lowest Acidity (& date) | 6.25 (27) | 6.22 (13) | 6.23 (18) | 5.6 (17) | 6.19 (17) | 4.86 (6) | 5.91 (5) | 5.96 (24) | 6.31 (6) | 5.92 (14) | 5.17 (14) | 5.2 (2) |
| Wind Directions | ||||||||||||
| North | 1 | 0 | 0 | 5 | 7 | 1 | 3 | 9 | 8 | 0 | 0 | 5 |
| North-East | 0 | 1 | 4 | 6 | 1 | 1 | 2 | 2 | 7 | 4 | 0 | 6 |
| East | 1 | 0 | 2 | 0 | 1 | 1 | 1 | 0 | 3 | 5 | 2 | 6 |
| South-East | 2 | 1 | 6 | 2 | 0 | 2 | 2 | 3 | 2 | 4 | 6 | 3 |
| South | 19 | 13 | 9 | 7 | 12 | 10 | 8 | 5 | 2 | 4 | 14 | 7 |
| South-West | 0 | 4 | 1 | 4 | 3 | 4 | 4 | 2 | 1 | 3 | 1 | 0 |
| West | 0 | 5 | 0 | 0 | 3 | 4 | 1 | 0 | 1 | 2 | 0 | 1 |
| North-West | 1 | 4 | 8 | 6 | 3 | 7 | 8 | 10 | 5 | 7 | 2 | 2 |
| Calm | 7 | 0 | 1 | 0 | 1 | 0 | 2 | 0 | 1 | 2 | 5 | 1 |
| Wind Speeds (mph) | ||||||||||||
| Mean Over 24 hrs | 7.7 | 10 | 6.6 | 7.2 | 7.6 | 6.1 | 5 | 4 | 4.5 | 6 | 6.7 | 7.6 |
| Max Gust (& date) | 46 (28) | 59 (25) | 60 (9) | 44 (26) | 35 (24) | 31 (27) | 27 (3) | 26 (11) | 28 (22) | 70 (27) | 44 (14) | 41 (9) |
| Pressure (mb) | ||||||||||||
| Mean at 0900 hrs | 1018.2 | 1009.8 | 1017.6 | 1015.9 | 1011.1 | 1014.1 | 1013.8 | 1015.6 | 1021 | 1010.6 | 1003.6 | 1012.4 |
| Max Pressure (& date) | 1037.9 (1) | 1035.9 (15) | 1035 (24) | 1032.8 (21) | 1025.5 (6) | 1027.3 (24) | 1026.9 (14) | 1025.1 (26) | 1031.8 (1) | 1029.2 (4) | 1021.2 (5) | 1032.7 (18) |
| Min Pressure (& date) | 978.3 (24) | 978.1 (26) | 985.4 (18) | 991.3 (29) | 991.3 (22) | 998.5 (5) | 996.5 (3) | 1002.4 (9) | 1005.7 (8) | 980.5 (22) | 965.8 (14) | 985.7 (27) |
| Insolation | ||||||||||||
| Mean Cloud Cover (%) | 83.8 | 72.5 | 81.3 | 55 | 75 | 75 | 78.8 | 73.8 | 63.8 | 78.8 | 86.3 | 92.5 |
| Total Sunshine (hrs) | 48.7 | 79.6 | 104.4 | 193.8 | 191.1 | 166.1 | 151.9 | 138 | 142 | 90.5 | 48.4 | 31.4 |
| Sunniest Day (& date) | 6.1 (19) | 8 (18) | 8.5 (29) | 10.8 (10) | 11.7 (27) | 12.2 (1) | 12.2 (13) | 10.7 (15) | 11 (1) | 8.7 (23) | 7.2 (7) | 6.6 (9) |
| Sunless Days | 13 | 7 | 3 | 0 | 2 | 2 | 0 | 2 | 5 | 7 | 11 | 16 |
| Days with Fog (at 0900hrs) | 10 | 1 | 6 | 0 | 0 | 2 | 0 | 0 | 1 | 2 | 7 | 4 |
| Other Ppt | ||||||||||||
| Days with snow/sleet | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Lying Snow (>50%) | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Hail (< 0.5cm) | 0 | 2 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| Hail (>/=0.5cm) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Thunder heard | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 2 | 0 | 1 | 0 | 0 |
| Ground Obs | ||||||||||||
| Lowest Grass Min (& date) | -9.9 (4) | -4.8 (15) | -5.2 (2) | -2.6 (14) | 0.1 (2,5) | 5 (29) | 5.6 (22) | 5.9 (26) | 2.8 (24) | -2.9 (24) | -1.8 (18) | -4 (18) |
| Days with Ground Frost | 16 | 10 | 12 | 8 | 0 | 0 | 0 | 0 | 0 | 4 | 6 | 10 |
| Lowest Conc. Min (& date) | -9.1 (4) | -3.6 (15) | -4.4 (2) | -0.6 (12) | 1.9 (2,5) | 4.6 (11) | 7.6 (10) | 7.6 (26) | 4.7 (24) | -1.6 (19) | -0.2 (18) | -2.5 (11) |
| Lowest B.Earth Min (& date) | -5.7 (4) | -1.9 (15) | -2.5 (2) | 0 (14) | 2.5 (2) | 6.5 (11) | 8.1 (22) | 8.5 (26) | 1.2 (24) | -0.3 (19) | 0.6 (18) | -1.7 (11) |
| Soil Temps (C, means) | ||||||||||||
| Surface | 4 | 5.4 | 6.6 | 10.9 | 14.7 | 18.4 | 18.6 | 19.5 | 15.2 | 9.7 | 7.7 | 5.2 |
| 5cm | 3.7 | 5 | 5.4 | 8.8 | 12.3 | 16.1 | 17.1 | 17.5 | 14.2 | 9.3 | 7.3 | 4.9 |
| 10cm | 4.1 | 5.7 | 5.9 | 9 | 12.4 | 16 | 17.3 | 17.9 | 14.6 | 9.9 | 7.8 | 5.4 |
| 20cm | 4.4 | 6.2 | 6.7 | 9.3 | 12.4 | 15.6 | 17.2 | 18 | 15 | 10.7 | 8.5 | 5.9 |
| 30cm | 4.3 | 6.3 | 6.8 | 9.6 | 12.7 | 15.6 | 17.3 | 18.5 | 15.4 | 11.3 | 8.8 | 6 |
| 40cm | 4.3 | 6.2 | 6.7 | 9.5 | 12.5 | 15.6 | 17.2 | 18.4 | 15.5 | 11.4 | 8.7 | 6.1 |
| 50cm | 4.6 | 6.5 | 7 | 9.8 | 12.7 | 15 | 17.3 | 18.6 | 15.9 | 12 | 9.4 | 6.6 |
| 100cm | 5 | 6.6 | 6.7 | 8.9 | 11.4 | 13.8 | 15.9 | 17.4 | 15.9 | 12.8 | 10 | 7.3 |