Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Winter Spring Summer Autumn 1895 -1.9 -0.4 5.6 12.3 17.8 21.4 23.7 22 11.9 10.5 -0.9 -2.3 10 -9999.9 11.9 22.4 7.2 1896 -5.9 -0.2 2.9 12.4 15.9 21.4 26.7 24.1 17.4 10.6 -1.2 -3.3 10.1 -2.8 10.4 24.1 8.9 1897 -5.5 -0.4 2.5 15.6 18.7 21.3 24.2 26.2 17 10.8 -1.3 -3.4 10.5 -3.1 12.3 23.9 8.8 1898 -7.2 -0.4 2.2 11.6 18.5 21.2 23.9 23.5 19.9 10.4 1.1 -4.4 10 -3.7 10.8 22.9 10.5 1899 0 -2.5 3.4 12.4 16.6 20.4 25.1 20.8 17.2 6.2 10.2 4 11.2 -2.3 10.8 22.1 11.2 1900 -0.2 -0.7 7.1 14.9 20.1 21.3 23.7 20.8 19 12.8 6.7 10 13 1 14 21.9 12.8 1901 -0.1 0.7 9.4 16.4 20.6 20.5 23.1 27 23.1 9.3 13.3 3.7 13.9 3.5 15.5 23.5 15.2 1902 -7.4 -3.5 10.7 15.3 18.9 21.3 25.8 23.7 19.2 17.8 1.2 -3.9 11.6 -2.4 15 23.6 12.7 1903 0 2.4 -0.4 8.3 14 18.4 24.2 22.8 16.4 14.1 4.2 2.7 10.6 -0.5 7.3 21.8 11.6 1904 -1.8 -8 1 17.1 18 22.2 25.8 26.6 20.7 12.5 9.7 -1.1 11.9 -2.4 12 24.9 14.3 1905 -5.8 -2.4 11.9 15.7 21.4 24.5 28.4 23 19.5 8.1 3.2 0 12.3 -3.1 16.3 25.3 10.3 1906 -5.3 1.9 7 16 21.3 21.6 30.1 25.9 17 12.1 3.6 -7.3 12 -1.1 14.8 25.9 10.9 1907 -18.4 -2.2 3.9 12.3 20.9 21.3 25.8 21.2 18.4 14.2 4.5 -0.7 10.1 -9.3 12.4 22.8 12.4 1908 -1.2 -2 4.3 11.1 17.4 20.5 22.9 23.3 15.6 8.9 5.1 -3.2 10.2 -1.3 10.9 22.2 9.9 1909 -14.1 -4.2 7.6 10.7 17 22.2 23.3 19.9 19.1 10.2 -2.5 -7.3 8.5 -7.2 11.8 21.8 8.9 1910 -2.9 -4.4 9.4 13.5 19 19 23.2 22.5 17.5 10.1 2.1 -1.9 10.6 -4.9 14 21.6 9.9 1911 -11.1 -2.9 6.5 10.1 17.5 20.5 23.8 23.7 18.4 10.9 -2.8 -2.5 9.3 -5.3 11.4 22.7 8.8 1912 -9.2 1.6 4.1 12.8 21.5 23.2 23.5 21.9 18 9.9 3.7 -1.5 10.8 -3.4 12.8 22.9 10.5 1913 -9.5 -3.7 1.7 12.3 17.3 22.1 22.2 22.1 16.5 8 3.5 1.4 9.5 -4.9 10.4 22.1 9.3 1914 -3.2 -1.1 6 13.4 19.2 22.2 23 25.3 17.3 13.5 4.2 -7.9 11 -1 12.9 23.5 11.7 1915 -4.1 3.7 10.9 17.2 19.7 22.3 25.1 28.8 18.8 11.4 1.4 -1.1 12.8 -2.8 15.9 25.4 10.5 1916 -19.1 -3 6.4 14.1 19.1 23 21.2 24.8 19.9 11.6 0.8 -6.7 9.3 -7.7 13.2 23 10.8 1917 -7.7 -7.4 3.2 12.3 18.5 21.3 24.7 23.9 19.2 10.6 9.4 -9.5 9.9 -7.3 11.3 23.3 13.1 1918 -2.5 -2.3 4.3 14.4 17 22.6 25.8 22.9 22.4 12.5 5 -1.6 11.7 -4.8 11.9 23.8 13.3 1919 -0.4 -2.4 1.3 14.5 16.8 18.9 24.5 24.5 20.5 6.4 -0.7 -6.3 9.8 -1.5 10.9 22.6 8.7 1920 -8.1 0.9 4.6 9.5 16.7 21.1 28.6 27.4 20.2 11.2 4.7 -1.7 11.3 -4.5 10.3 25.7 12 1921 -3.9 2.7 6.6 13.7 20.1 22.7 25.6 25.3 17.6 14.4 0.9 -7.7 11.5 -1 13.5 24.5 11 1922 -5.1 -7.4 7.1 13.7 18.7 25.8 25.8 26.9 21.5 13.8 3.8 -5.2 11.6 -6.7 13.2 26.2 13 1923 -4.7 0.4 7 15.5 19.3 24.7 27.7 26.3 21 15.4 6.7 0.6 13.3 -3.2 13.9 26.2 14.4 1924 -4.3 4.6 7.6 11.3 22.1 21.6 26.4 25.3 20.7 14 1 -10.1 11.7 0.3 13.7 24.4 11.9 1925 -2.7 -0.9 6.1 14.6 23.2 23.9 27.2 23.8 18.3 11 4.7 2.8 12.7 -4.6 14.6 25 11.3 1926 1.1 6.5 11.6 17.4 19.8 21.8 27.7 25.8 17.5 13.7 2.3 -1.9 13.6 3.5 16.3 25.1 11.2 1927 -5.8 1.1 7.5 11.6 18.2 23.6 26.4 28.4 20.2 10.9 -3 -9.6 10.8 -2.2 12.4 26.1 9.4 1928 -4.2 2.7 8.1 12.4 21.2 24 27.3 24.3 22.7 11.1 7.3 -0.9 13 -3.7 13.9 25.2 13.7 1929 -7.1 -4.6 9.4 11.6 19.2 21.9 22.7 23.5 20.6 14.7 3.7 -4.4 10.9 -4.2 13.4 22.7 13 1930 -14.7 5.1 7.3 15.8 17.4 20.6 24.7 27.5 20 9.7 4.2 2.7 11.7 -4.7 13.5 24.3 11.3 1931 2.4 3.7 5.7 15.3 19.3 21.6 24.6 25.4 17.4 12.3 -0.5 -1.7 12.1 2.9 13.4 23.9 9.7 1932 -4.1 -1.4 5.1 13.5 19.5 24.3 21.5 25.4 19.4 11.7 3.4 -6 11 -2.4 12.7 23.7 11.5 1933 -2.6 -2.4 5.5 12.3 18.5 19.7 22.4 28.4 16.7 9.8 6.9 -10.5 10.4 -3.7 12.1 23.5 11.1 1934 0.1 4.2 7.4 19.2 20.2 21.4 23.6 25.3 17.7 11.6 6 -4.9 12.7 -2.1 15.6 23.4 11.8 1935 -10.2 4.5 2.9 10.3 19.5 21.8 25.7 23.3 21.4 11.1 1.2 1.8 11.1 -3.5 10.9 23.6 11.2 1936 -5.2 -13.4 5.1 14 22.5 24.1 24.6 25.4 17.9 12.7 3.5 -1.8 10.8 -5.6 13.9 24.7 11.4 1937 -11.6 -2.5 10.5 13.1 18.5 24.3 25.2 20.8 22.7 13.2 1.7 -3 11.1 -5.3 14 23.4 12.5 1938 -0.9 -2.9 8.4 16 20.3 24.4 28 23.8 24.8 14.4 2 -3.4 12.9 -2.3 14.9 25.4 13.7 1939 -0.8 -3.2 6.4 15.5 19.9 22.3 24.7 27.9 18.4 10.6 9.4 5.1 13 -2.5 13.9 25 12.8 1940 -3.1 0.6 10.3 14.8 20.3 22.3 26.3 24.7 23 14.7 -1 0 12.7 0.9 15.1 24.4 12.2 1941 -0.2 3.2 12.5 18.8 19.4 22.3 27 26.3 15.8 12.7 6.3 -0.2 13.7 1 16.9 25.2 11.6 1942 0.8 2.5 7.9 15.6 20.4 21.9 25.9 24.5 19.2 12.8 -0.4 -1 12.5 1 14.6 24.1 10.5 1943 -10.1 4.2 4.6 16.4 16 20.8 23.2 21 19.5 11.2 5.5 0.6 11.1 -2.3 12.3 21.7 12.1 1944 -0.5 2.7 5 15.9 19.7 22.6 24.1 20.2 18.1 14.8 4.6 -4.2 11.9 0.9 13.5 22.3 12.5 1945 -2.3 2.3 7.2 10.1 21.5 20.4 25.1 25 16.6 11.7 -0.2 -1.5 11.3 -1.4 12.9 23.5 9.4 1946 0.6 2.5 7.6 11.8 22.3 21.2 22.6 25.3 19.4 10.4 -2.5 -2.8 11.5 0.5 13.9 23 9.1 1947 -4.6 1.3 7.7 13.6 19.8 19.6 22.9 21.7 19.7 12 1.6 0.7 11.3 -2 13.7 21.4 11.1 1948 -0.7 -4.2 4.7 8 20.6 24.8 22.2 21.2 17.2 11.5 3 -6.4 10.2 -1.4 11.1 22.7 10.6 1949 -6.7 -5.1 6.9 13.2 19.5 20.2 22.7 21.5 20.1 10.1 8.9 -6.8 10.4 -6.1 13.2 21.5 13 1950 -20.4 3.1 5.2 10.5 16.1 24.8 24.6 22.5 21.7 9.4 -3.2 -1.6 9.4 -8 10.6 24 9.3 1951 -8.1 -1.9 0.9 13.9 18.6 22.4 26 23.2 19.9 7.7 3.6 -7.4 9.9 -3.9 11.1 23.9 10.4 1952 -7.1 1.4 5.8 12.5 19.4 19.8 24.5 24.6 20.1 14.1 3.6 1.2 11.7 -4.4 12.6 23 12.6 1953 -6.8 3.4 7 11.4 20.1 20.7 23.8 23 19.2 14 7.4 0.6 12 -0.7 12.8 22.5 13.5 1954 -10.9 2.9 4.7 6.1 18.3 20.4 22 21.4 17.2 11.1 7.6 0.8 10.1 -2.5 9.7 21.3 12 1955 -2.9 -1.5 -0.6 9.5 14.4 20.1 23 20.8 18.6 10.1 -7.3 -11.2 7.8 -1.2 7.8 21.3 7.1 1956 -10.2 -5.2 3.5 11.9 20 18.3 24.8 23.4 18.5 9.4 2.2 -2.4 9.5 -8.9 11.8 22.2 10 1957 -14.3 -4.3 5.7 11.7 21.3 20.4 20.4 20.5 20.5 9.1 2.9 -0.1 9.5 -7 12.9 20.4 10.8 1958 2.1 -0.8 5.3 13 22.8 25.9 28.5 25.2 16.3 12.2 1.1 -1.1 12.5 0.4 13.7 26.5 9.9 1959 -4.4 -1.4 7.7 13.2 17 21.1 24.2 18.9 14.8 8.9 0.5 2 10.2 -2.3 12.6 21.4 8.1 1960 -5.4 2.9 6.4 14 15.1 19.1 26.5 21.3 18.1 12.1 3 -1.9 10.9 -0.2 11.8 22.3 11.1 1961 -1.4 2.8 8.2 12.2 19.7 24.7 27.1 27.9 15.8 9.8 -0.6 -4.8 11.8 -0.2 13.4 26.6 8.3 1962 -4.1 -1.5 3.8 13.8 15.8 20.9 24.2 20.8 19.1 12 6 0.5 10.9 -3.5 11.1 22 12.4 1963 -5.3 6 7.7 12.9 18.2 21 22.7 25.1 19.3 13.1 2.5 -1.2 11.8 0.4 12.9 22.9 11.6 1964 -0.9 4.6 4.2 10.4 16.8 20.6 22.1 20.3 15.4 12.5 -0.1 -10.6 9.6 0.8 10.5 21 9.3 1965 -5.6 0.9 4.2 12.2 17.4 22.1 25.6 24.2 16.8 12.9 1.2 -3.3 10.7 -5.1 11.3 24 10.3 1966 -8.6 2.2 8 11.5 18.3 19.5 23 22.2 19.4 11.1 0.1 -1.8 10.4 -3.2 12.6 21.6 10.2 1967 -4.2 4.6 2.8 11.4 17.4 24.7 23.6 27.6 21.5 10.4 3.4 -3.4 11.7 -0.5 10.5 25.3 11.8 1968 -2.8 0.1 8.7 10.4 17.8 19.5 24.5 21.1 16.8 11 4.5 -7.9 10.3 -2 12.3 21.7 10.8 1969 -17.9 0.9 8 13.8 19.9 26.1 23.7 20.5 16.6 10.2 6.5 1.4 10.8 -8.3 13.9 23.4 11.1 1970 -7.6 3.7 7.1 12.5 16.5 24.1 25.1 24.6 16.1 11.2 -1 -5.8 10.5 -0.8 12 24.6 8.8 1971 -6.5 0.7 4.2 13.5 19.2 19.9 25.4 25.6 15.6 10.1 4 -9.3 10.2 -3.9 12.3 23.6 9.9 1972 -10.4 -1.3 8.4 10.7 20.3 21 22.9 24 15.1 10.1 3.2 -4.9 9.9 -7 13.1 22.6 9.5 1973 -3 0.6 7.2 12.7 18.4 20 24.2 22.6 17.4 9 -3.9 -0.4 10.4 -2.4 12.8 22.3 7.5 1974 -8.3 2.7 5.1 13.5 15.4 21.4 21.3 25 20.5 11.4 2.6 0.8 11 -2 11.3 22.6 11.5 1975 -4.9 -6 3.5 12 17 19.6 25.6 19.2 20 10.5 2.1 -1.5 9.8 -3.4 10.8 21.5 10.9 1976 -1.6 0.4 3.7 13.8 17.9 17.5 21.6 20.5 18.5 9.5 4.1 0.3 10.5 -0.9 11.8 19.9 10.7 1977 -2.7 5.6 6.2 15.4 16.3 21.2 21.2 24.3 15.7 11.2 1 -9.3 10.5 1.1 12.6 22.2 9.3 1978 -7.7 1.6 6.8 13.5 16.4 23.6 26.6 23.1 16.1 12.5 -0.6 -5.3 10.6 -5.1 12.2 24.4 9.3 1979 -12.3 -5.2 8.3 12.1 16.3 19.8 25.8 26.2 20.8 13.2 2.6 -0.2 10.6 -7.6 12.2 23.9 12.2 1980 -7.2 0.4 4.4 16.4 19.1 20.9 21.6 20.6 17.3 11.9 5.2 -4.2 10.5 -2.3 13.3 21 11.5 1981 1.8 1.7 10.4 11.4 18.8 18.1 24.2 27.7 19.9 10.3 5.7 -3.8 12.2 -0.2 13.5 23.3 12 1982 -10.8 -3.6 4.6 10.4 16.6 26.1 22.9 21.1 18.1 11.7 -0.4 -2.2 9.5 -6.1 10.5 23.4 9.8 1983 0.3 4.1 7.6 14.8 20.9 19.4 21.8 23.7 15.7 11 4.8 -12 11 0.7 14.4 21.6 10.5 1984 -0.6 5.7 9.5 12.8 14.7 20.3 24.7 23.2 15.5 7.8 -0.7 -8.7 10.4 -2.3 12.3 22.7 7.5 1985 -2.4 -0.3 6.1 12.1 20 20.8 27.9 23.8 15.6 9.4 -9.5 -3.6 10 -3.8 12.7 24.2 5.2 1986 1.9 -1.9 9.9 11.4 16.9 22 21.9 25.8 16.2 13.7 1.1 -1.6 11.4 -1.2 12.7 23.2 10.3 1987 0.8 5.1 8.3 14.7 18.4 24.3 25.6 22.2 22.3 13.8 5.5 0.4 13.5 1.4 13.8 24 13.9 1988 -4.6 0.3 7.9 15.1 18.5 21.1 23.2 23.7 19.3 14.2 5 -1.4 11.9 -1.3 13.8 22.7 12.8 1989 -2.6 -6.4 4.7 15.3 18.9 23.4 25 23.5 20.8 11.3 4.1 0.7 11.6 -3.5 13 24 12.1 1990 -1.3 -0.2 7.5 13.7 17.9 20.6 26.2 26.1 21.8 9.1 0.7 -5.4 11.4 -0.3 13 24.3 10.5 1991 -9 5.8 4.2 14.9 19.5 20.3 23.5 25.1 19.3 8.2 4.2 2.4 11.5 -2.9 12.9 23 10.6 1992 3 2 12.3 14.3 18.9 25.6 26.2 25.1 15 11.4 3 -6.4 12.5 2.5 15.2 25.6 9.8 1993 -9.2 -0.3 7.7 13.7 22.2 19.8 22.1 23.2 21 10.8 1.4 0.8 11.1 -5.3 14.5 21.7 11.1 1994 -1.2 -6 10.3 15.3 19.1 21.2 25.3 25.8 20.3 10.1 1.9 -1.5 11.7 -2.1 14.9 24.1 10.8 1995 -6.4 1.6 8 12.6 20.8 23.3 23.5 20 22.4 10.3 1.8 -4.3 11.1 -2.1 13.8 22.3 11.5 1996 -9.4 1.8 5.1 13.4 15.2 20.1 24.2 23 15.8 9.4 -3 -8.6 8.9 -4 11.2 22.4 7.4 1997 -3.5 2.3 5.2 13 20 21.2 23.5 24.9 20.1 8.7 2.6 2.2 11.7 -3.3 12.7 23.2 10.5 1998 -4.2 5.9 7.7 14 23.3 22.8 27 26.1 20.7 11.1 2.9 -1.7 13 1.3 15 25.3 11.6 1999 -1.8 5.1 7.6 13.6 15.2 19.5 22.5 23.8 17.8 12.3 5.8 0.3 11.8 0.5 12.1 21.9 12 2000 -6 0.2 7.5 12.8 16.6 20.2 22.7 21.9 16.7 10.7 2.8 -4 10.2 -1.8 12.3 21.6 10.1 2001 0.8 -1.6 7.1 12.6 17 19.4 22.4 23.9 19.1 10.3 5.3 -2.5 11.2 -1.6 12.2 21.9 11.6 2002 -1 2.2 0 10.4 15.4 23.4 23.8 24.2 16.6 9.1 4.8 1.1 10.8 -0.4 8.6 23.8 10.2 2003 0 -0.9 5.7 12.9 16.9 23.4 25.4 25 18.1 12.4 0.7 0.6 11.7 0.1 11.8 24.6 10.4 2004 -5 3.1 9.6 16.1 18 24.3 25.7 24.9 15.5 11.1 3.1 -1.6 12.1 -0.4 14.6 25 9.9 2005 -5.5 5 9.6 15.5 21 21.2 21.5 23.6 16.6 11.3 3.6 -1.2 11.9 -0.7 15.4 22.1 10.5 2006 2.6 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9 -9999.9