ALTITUDE: 63.4m   LATITUDE: 51° 45'40 N   LONGITUDE: 1° 15'50 W
Note: All measures of temperature are in °C; rainfall is in mm.

  Period Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean monthly air temperature 1815 - 2004 3.7 4.2 5.7 8.3 11.6 14.8 16.5 16.1 13.6 10.0 6.4 4.5 9.6
Highest mean monthly temperature and year   7.7
1916
8.0
1990
9.5
1938
11.2
1943
15.3
1833
18.6
1846
20.8
1983
19.9
1997
16.8
1949
13.8
2001
10.4
1994
8.2
1852
11.2
2004
Lowest mean monthly temperature and year   -3.2
1963
-2.6
1947
1.9
1845
4.9
1837
9.0
1817
11.8
1909
13.8
1841
13.3
1912
11.0
1952
6.8
1817
2.9
1923
-1.6
1890
7.5
1879
Monthly mean of daily maximum temperature 1881 - 2004 6.8 7.4 10.1 13.0 16.7 19.8 21.7 21.2 18.5 14.2 9.8 7.4 13.9
Absolute maximum temperature and year 1881 - 2004 14.7
1930
18.5
1998
22.1
1965
27.1
1893
30.6
1947
34.3
1976
33.9
1923
35.6
2003
33.5
1911
27.3
1921
19.0
1946
15.2
2001
35.6
2003
Monthly mean of daily minimum temperature 1881 - 2004 1.4 1.4 2.5 4.3 7.2 10.2 12.2 11.9 9.8 6.8 3.8 2.1 6.1
Absolute minimum temperature and year   -16.6
1982
-16.2
1947
-10.9
1947
-4.9
1892
-1.8
1938
1.3
1892
4.4
1965
3.5
1892
-0.6
1919
-5.1
1890
-8.8
1923
-16.1
1981
-16.6
1982
Monthly mean of daily grass minimum temperature 1881 - 2004 -0.9 -1.0 -0.2 1.5 4.6 7.9 10.0 9.4 7.1 3.9 1.2 -0.4 3.6
Absolute grass minimum temperature and year   -22.5
1982
-22.2
1947
-19.1
1947
-9.5
1984
-8.2
1944
-3.6
1991
-0.1
1990
-0.2
1943
-4.5
1885
-10.0
1997
-11.2
1923
-20.1
1981
-22.5
1982
Mean monthly earth temperature at 30 cm 1925 - 2004 4.0 4.1 5.9 9.1 12.9 16.4 18.2 18.1 15.7 11.7 7.8 5.2 10.6
Mean monthly rainfall 1767 - 2004 52.6 41.0 41.1 43.9 50.6 53.3 59.5 58.3 60.3 65.3 61.8 55.8 643.5
Wettest month and year   138.7
1852
119.6
1937
133.6
1862
137.2
2000
143.1
1773
193.0
1852
183.4
1834
135.3
2004
206.7
1774
188.2
1875
186.4
1852
143.3
1914
1034.7
1852
Driest month and year   5.3
1825
0.0
1798
1.5
1929
0.5
1817 1912
1.5
1795
1.8
1925
0.8
1825
2.0
1940
2.5
1929
4.3
1788 1809
4.8
1945
1.7
1780
353.4
1788
Mean monthly bright sunshine hours 1881 - 2004 54.3 70.3 113.3 151.8 191.8 196.9 191.6 180.3 138.3 102.8 64.4 48.8 1504.3
Sunniest month and year   94.1
1952
115.9
1970
198.7
1995
252.8
1893
300.8
1989
301.0
1975
310.4
1911
285.1
1995
222.6
1911
159.7
1921
107.9
1923
77.7
1952
1893.7
1990
Dullest month and year   14.9
1885
22.8
1940
48.8
1984
81.5
1966
98.3
1981
109.4
1909
97.4
1944
97.7
1912
64.9
1945
43.6
1976
29.7
1888
5.0
1890
1158.3
1888
Mean number of days with rain 1881 - 2004 16.9 13.6 14.1 13.8 13.5 11.8 12.6 13.2 12.6 15.4 15.9 17.1 170.5
Mean number of days of snow cover 1926 - 2004 3.8 3.2 0.9 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.7 9.9
Mean number of days with fog 1926 - 2004 3.6 3.1 1.9 0.4 0.1 0.1 0.1 0.2 0.7 2.8 3.9 4.2 20.9
Mean number of air frosts 1881 - 2004 10.5 9.8 7.5 2.9 0.4 0.0 0.0 0.0 0.0 1.5 5.2 8.7 46.5
Mean number of ground frosts 1881 - 2004 17.8 16.6 16.2 10.6 3.6 0.4 0.0 0.0 1.2 6.5 12.2 16.8 101.9