YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC D-J-F M-A-M J-J-A S-O-N ANN 1871 -3.60 -3.20 2.10 7.60 13.50 18.60 21.50 21.20 15.00 11.30 0.60 -7.90 -2.61 7.73 20.43 8.97 8.63 1872 -5.70 -4.40 -3.40 6.90 11.60 19.90 21.30 22.00 17.60 8.80 -0.40 -8.80 -6.00 5.03 21.07 8.67 7.19 1873 -8.10 -5.80 0.20 4.60 10.20 20.00 20.50 21.40 15.90 8.10 -0.40 -1.10 -7.57 5.00 20.63 7.87 6.48 1874 -4.60 -2.90 -0.20 2.60 13.70 19.30 22.20 20.50 18.70 10.40 2.00 -3.30 -2.87 5.37 20.67 10.37 8.38 1875 -11.90 -13.10 -3.00 3.90 11.80 15.90 19.10 18.60 14.60 7.40 0.20 0.30 -9.43 4.23 17.87 7.40 5.02 1876 -2.80 -3.50 -1.90 5.90 11.90 17.80 21.70 21.30 15.10 7.40 2.00 -9.60 -2.00 5.30 20.27 8.17 7.93 1877 -8.90 0.60 -4.30 5.30 12.10 16.70 21.20 21.20 18.10 10.70 2.20 3.40 -5.97 4.37 19.70 10.33 7.11 1878 -2.90 0.70 5.10 10.30 12.30 17.30 23.10 22.40 17.80 10.20 5.30 -5.30 0.40 9.23 20.93 11.10 10.42 1879 -5.30 -4.30 2.40 7.00 12.70 17.30 22.40 21.20 15.00 13.40 3.00 -4.70 -4.97 7.37 20.30 10.47 8.29 1880 1.90 -1.70 0.70 7.40 16.70 20.00 20.90 21.10 16.20 9.30 -2.10 -6.60 -1.50 8.27 20.67 7.80 8.81 1881 -8.40 -4.60 -0.90 5.10 15.00 15.90 22.00 22.30 18.40 11.60 3.10 2.10 -6.53 6.40 20.07 11.03 7.74 1882 -3.30 2.40 2.30 6.50 9.80 16.80 19.40 20.60 17.60 13.70 4.80 -3.80 0.40 6.20 18.93 12.03 9.39 1883 -10.20 -6.00 -1.10 6.60 10.30 17.20 20.30 19.30 14.30 9.80 4.00 -2.60 -6.67 5.27 18.93 9.37 6.72 1884 -9.70 -5.00 -0.80 5.50 12.40 16.20 19.30 19.30 18.30 12.30 2.20 -4.70 -5.77 5.70 18.27 10.93 7.28 1885 -11.50 -11.70 -3.70 5.10 10.30 16.20 20.70 17.80 16.10 8.50 3.60 -2.70 -9.30 3.90 18.23 9.40 5.56 1886 -8.50 -5.60 -0.20 6.80 12.90 16.90 20.90 20.40 16.40 12.00 1.40 -7.60 -5.60 6.50 19.40 9.93 7.56 1887 -9.40 -4.60 -1.10 6.30 14.30 17.60 22.90 19.70 16.30 8.10 2.70 -2.80 -7.20 6.50 20.07 9.03 7.10 1888 -11.40 -6.30 -2.80 5.60 9.20 18.10 20.20 19.50 14.40 8.20 4.30 -1.10 -6.83 4.00 19.27 8.97 6.35 1889 -2.70 -8.30 3.10 7.80 12.40 15.30 20.40 20.90 15.90 8.90 2.90 3.30 -4.03 7.77 18.87 9.23 7.96 1890 -2.80 -1.20 -2.50 7.30 10.50 20.40 22.30 19.20 15.60 10.20 4.80 -1.70 -0.23 5.10 20.63 10.20 8.93 1891 -1.80 -3.30 -1.30 7.80 11.90 17.50 19.10 20.60 20.10 10.90 0.90 1.70 -2.27 6.13 19.07 10.63 8.39 1892 -8.20 -1.60 -0.90 6.20 10.80 16.70 21.70 20.90 17.40 11.70 1.20 -5.80 -2.70 5.37 19.77 10.10 8.13 1893 -11.50 -7.30 -0.50 5.90 11.30 19.20 22.10 20.60 17.20 10.70 2.20 -4.90 -8.20 5.57 20.63 10.03 7.01 1894 -3.60 -5.40 4.30 7.90 12.70 20.90 23.00 21.10 18.40 10.40 0.40 0.20 -4.63 8.30 21.67 9.73 8.77 1895 -8.80 -8.80 -0.60 8.40 13.80 20.00 20.70 22.60 19.30 7.80 2.00 -1.80 -5.80 7.20 21.10 9.70 8.05 1896 -3.50 -3.40 -1.20 9.50 17.30 19.20 22.00 22.60 15.20 8.80 2.70 -0.30 -2.90 8.53 21.27 8.90 8.95 1897 -5.30 -2.10 0.20 7.10 12.70 17.70 23.50 20.40 20.20 14.00 2.80 -4.70 -2.57 6.67 20.53 12.33 9.24 1898 -2.70 -3.30 3.70 7.30 13.40 19.50 22.40 21.70 19.20 10.20 3.00 -5.30 -3.57 8.13 21.20 10.80 9.14 1899 -5.80 -8.30 -2.80 9.20 13.80 19.90 21.20 22.70 16.80 14.20 7.50 -2.60 -6.47 6.73 21.27 12.83 8.59 1900 -2.00 -7.30 -1.40 9.10 14.80 17.90 21.40 24.40 18.90 15.40 2.90 -1.10 -3.97 7.50 21.23 12.40 9.29 1901 -4.10 -8.00 0.80 8.60 12.70 19.70 24.30 22.30 17.70 13.20 2.90 -4.70 -4.40 7.37 22.10 11.27 9.08 1902 -4.00 -5.10 3.50 7.80 13.70 17.20 22.30 20.10 15.60 12.40 7.80 -2.80 -4.60 8.33 19.87 11.93 8.88 1903 -4.80 -4.20 4.80 8.20 13.50 17.00 22.30 19.90 17.40 11.70 2.20 -7.30 -3.93 8.83 19.73 10.43 8.77 1904 -8.90 -9.50 0.90 4.80 13.40 17.70 21.70 19.80 17.40 11.60 6.20 -3.20 -8.57 6.37 19.73 11.73 7.32 1905 -8.70 -8.40 3.00 7.00 12.30 18.00 20.60 22.50 19.00 10.80 3.80 -0.80 -6.77 7.43 20.37 11.20 8.06 1906 -1.10 -3.80 -1.80 9.00 13.00 18.50 21.60 23.40 20.30 11.20 4.60 -1.20 -1.90 6.73 21.17 12.03 9.51 1907 -4.70 -4.10 4.30 3.50 9.60 17.90 21.80 20.00 16.70 9.90 3.70 -1.50 -3.33 5.80 19.90 10.10 8.12 1908 -3.60 -4.00 2.80 7.90 13.00 18.60 22.20 21.80 20.50 11.50 4.70 -2.70 -3.03 7.90 20.87 12.23 9.49 1909 -3.60 -2.00 1.20 5.30 12.00 17.90 21.80 22.80 17.00 9.30 7.80 -6.70 -2.77 6.17 20.83 11.37 8.90 1910 -5.50 -6.50 7.40 8.90 10.90 19.90 23.70 22.00 16.90 13.30 1.00 -4.00 -6.23 9.07 21.87 10.40 8.78 1911 -4.00 -1.20 2.70 6.40 16.10 21.40 23.20 20.90 18.00 10.80 0.70 0.80 -3.07 8.40 21.83 9.83 9.25 1912 -14.10 -7.40 -2.60 8.30 13.30 17.70 21.30 20.00 18.40 12.30 5.00 -0.10 -6.90 6.33 19.67 11.90 7.75 1913 -4.00 -6.20 0.50 8.20 12.90 19.90 21.70 22.30 17.70 10.80 6.90 2.40 -3.43 7.20 21.30 11.80 9.22 1914 -1.20 -8.50 0.60 6.70 14.90 18.60 22.90 21.90 17.90 14.00 5.30 -5.80 -2.43 7.40 21.13 12.40 9.62 1915 -6.20 -0.30 0.70 11.30 10.50 15.80 19.90 18.60 18.50 12.50 5.50 -2.30 -4.10 7.50 18.10 12.17 8.42 1916 -3.80 -6.30 -0.70 7.70 13.30 16.20 25.20 23.50 16.30 10.70 4.20 -5.50 -4.13 6.77 21.63 10.40 8.67 1917 -6.80 -9.40 1.90 5.40 10.70 16.20 21.80 20.60 16.40 6.40 5.20 -6.70 -7.23 6.00 19.53 9.33 6.91 1918 -11.60 -4.80 4.40 5.70 14.60 17.60 20.80 23.20 14.80 13.30 5.70 1.80 -7.70 8.23 20.53 11.27 8.08 1919 -1.90 -2.10 2.30 7.40 12.20 21.50 23.90 21.90 19.20 11.80 2.60 -8.10 -0.73 7.30 22.43 11.20 10.05 1920 -8.60 -5.20 2.60 4.70 12.30 19.20 20.40 20.40 19.90 15.30 3.70 -0.60 -7.30 6.53 20.00 12.97 8.05 1921 -1.00 -0.30 4.90 10.50 14.90 21.60 26.50 21.60 20.20 11.60 2.90 -1.70 -0.63 10.10 23.23 11.57 11.07 1922 -5.20 -4.20 2.70 7.60 15.80 20.20 21.60 22.00 19.60 13.00 6.20 -3.00 -3.70 8.70 21.27 12.93 9.80 1923 -2.80 -6.80 -2.10 7.40 12.00 20.00 22.50 20.50 17.20 10.90 5.50 2.60 -4.20 5.77 21.00 11.20 8.44 1924 -9.40 -2.70 0.50 7.30 10.60 16.80 20.40 20.40 14.60 14.00 3.90 -7.00 -3.17 6.13 19.20 10.83 8.25 1925 -4.70 -2.00 2.90 10.20 11.90 19.70 21.80 22.00 20.00 6.20 3.20 -5.40 -4.57 8.33 21.17 9.80 8.68 1926 -4.40 -1.80 -1.80 5.50 13.40 16.50 21.50 21.50 17.20 10.20 1.80 -4.20 -3.87 5.70 19.83 9.73 7.85 1927 -5.50 0.00 4.80 7.40 12.00 17.40 21.40 19.50 19.40 13.30 5.00 -4.30 -3.23 8.07 19.43 12.57 9.21 1928 -4.20 -2.10 1.90 5.70 13.30 16.20 22.70 22.00 16.30 12.50 5.00 -0.40 -3.53 6.97 20.30 11.27 8.75 1929 -10.30 -6.60 3.90 9.20 12.30 17.40 22.90 21.50 17.40 11.30 1.60 -2.00 -5.77 8.47 20.60 10.10 8.35 1930 -8.10 0.80 1.60 8.00 14.40 20.60 23.30 23.30 18.90 9.50 5.10 -1.70 -3.10 8.00 22.40 11.17 9.62 1931 -0.70 1.40 1.50 8.70 12.30 21.20 24.80 22.70 21.50 14.30 9.00 2.90 -0.33 7.50 22.90 14.93 11.25 1932 -0.30 0.10 -1.80 7.40 14.40 21.20 24.10 23.30 17.90 10.50 2.40 -2.60 0.90 6.67 22.87 10.27 10.18 1933 1.60 -4.90 1.10 7.30 13.50 23.50 24.10 21.80 21.00 10.90 2.60 -2.40 -1.97 7.30 23.13 11.50 9.99 1934 -0.50 -5.40 -0.30 8.10 16.60 20.90 23.10 21.40 17.00 12.90 6.90 -3.50 -2.77 8.13 21.80 12.27 9.86 1935 -5.70 -2.30 3.80 6.00 10.90 17.10 24.90 22.70 18.40 11.70 3.90 -3.50 -3.83 6.90 21.57 11.33 8.99 1936 -8.10 -11.10 3.20 5.60 16.60 17.40 24.50 23.40 19.60 10.60 2.60 0.20 -7.57 8.47 21.77 10.93 8.40 1937 -4.20 -3.70 0.30 6.60 13.80 18.40 23.80 24.50 18.40 10.00 2.80 -3.20 -2.57 6.90 22.23 10.40 9.24 1938 -5.00 0.20 5.90 9.10 13.30 19.30 22.90 23.70 17.80 14.40 5.60 -1.90 -2.67 9.43 21.97 12.60 10.33 1939 -1.20 -4.20 2.30 7.20 15.10 20.70 23.60 22.90 20.40 12.50 5.80 1.70 -2.43 8.20 22.40 12.90 10.27 1940 -8.40 -1.90 -1.10 5.90 11.90 19.00 23.40 20.90 18.00 13.60 3.10 -0.70 -2.87 5.57 21.10 11.57 8.84 1941 -2.90 -4.30 -0.80 10.30 15.50 19.90 22.40 22.30 18.80 12.10 5.10 0.90 -2.63 8.33 21.53 12.00 9.81 1942 -6.00 -4.70 3.10 10.40 13.50 18.50 22.60 21.40 16.00 10.90 4.60 -5.90 -3.27 9.00 20.83 10.50 9.27 1943 -6.70 -4.20 -1.00 6.60 12.30 20.10 22.80 22.60 15.10 10.90 1.80 -3.10 -5.60 5.97 21.83 9.27 7.87 1944 -1.70 -2.90 -0.70 5.40 15.00 20.60 22.00 22.50 18.30 11.40 5.90 -6.10 -2.57 6.57 21.70 11.87 9.39 1945 -7.40 -3.40 7.60 8.70 10.80 16.60 20.60 21.50 17.30 10.00 3.70 -5.70 -5.63 9.03 19.57 10.33 8.32 1946 -4.40 -3.70 6.00 9.10 12.10 18.50 22.20 20.60 17.20 13.50 4.60 -1.60 -4.60 9.07 20.43 11.77 9.17 1947 -2.90 -7.30 -0.40 6.70 10.60 16.70 21.10 25.00 18.40 15.90 1.00 -2.00 -3.93 5.63 20.93 11.77 8.60 1948 -8.40 -3.90 0.70 10.10 12.20 18.80 23.20 23.10 20.00 11.10 6.10 -1.40 -4.77 7.67 21.70 12.40 9.25 1949 -2.90 -3.90 1.60 8.00 14.50 21.40 24.50 23.10 15.70 13.00 4.30 -1.20 -2.73 8.03 23.00 11.00 9.82 1950 -3.20 -3.50 -0.80 4.70 12.80 19.50 21.00 19.60 16.80 14.10 1.40 -6.40 -2.63 5.57 20.03 10.77 8.43 1951 -6.00 -3.70 0.30 6.90 15.00 17.00 22.00 20.30 16.60 11.70 0.10 -3.50 -5.37 7.40 19.77 9.47 7.82 1952 -3.60 -0.70 0.20 9.70 13.40 20.40 23.80 21.60 18.40 9.30 5.50 0.40 -2.60 7.77 21.93 11.07 9.54 1953 -2.30 -1.50 2.70 6.80 13.70 20.70 23.40 23.80 18.70 14.60 6.90 -0.70 -1.13 7.73 22.63 13.40 10.66 1954 -4.20 1.40 0.50 9.50 11.70 21.40 22.50 21.70 18.70 12.00 5.40 -1.60 -1.17 7.23 21.87 12.03 9.99 1955 -5.00 -3.40 0.60 11.10 15.30 19.10 25.50 25.40 18.40 12.30 1.50 -4.60 -3.33 9.00 23.33 10.73 9.93 1956 -3.30 -3.30 0.30 6.80 12.80 21.10 20.60 21.90 15.90 13.90 3.30 -1.50 -3.73 6.63 21.20 11.03 8.78 1957 -8.80 -1.60 0.90 7.90 12.20 19.00 22.30 21.40 16.00 9.90 3.20 -0.60 -3.97 7.00 20.90 9.70 8.41 1958 -5.00 -7.80 1.40 8.30 14.00 16.40 21.40 22.30 17.50 12.70 4.70 -6.70 -4.47 7.90 20.03 11.63 8.78 1959 -9.60 -6.40 0.00 7.90 16.00 20.30 21.90 23.90 18.90 9.40 -0.70 1.00 -7.57 7.97 22.03 9.20 7.91 1960 -3.70 -4.10 -5.20 9.60 11.70 17.00 20.20 20.60 18.10 10.00 4.70 -4.70 -2.27 5.37 19.27 10.93 8.32 1961 -6.40 -0.60 2.40 5.70 11.00 19.10 21.60 21.90 18.80 11.30 3.70 -4.60 -3.90 6.37 20.87 11.27 8.65 1962 -9.10 -5.50 -0.40 7.50 15.70 18.30 19.90 21.10 15.00 12.00 3.90 -5.30 -6.40 7.60 19.77 10.30 7.82 1963 -12.40 -8.40 2.40 8.30 11.90 19.30 22.20 20.10 16.80 15.40 6.00 -9.90 -8.70 7.53 20.53 12.73 8.03 1964 -2.70 -3.20 0.40 7.70 16.30 19.80 23.00 20.40 16.80 9.60 5.20 -4.30 -5.27 8.13 21.07 10.53 8.62 1965 -6.40 -5.50 -3.20 6.50 15.40 17.90 21.10 19.90 17.10 11.00 4.20 1.10 -5.40 6.23 19.63 10.77 7.81 1966 -9.50 -4.80 2.50 6.30 10.40 20.00 23.70 19.90 15.70 10.00 3.90 -3.70 -4.40 6.40 21.20 9.87 8.27 1967 -3.70 -7.60 1.20 7.70 10.60 19.70 20.80 19.40 16.50 10.70 2.30 -1.30 -5.00 6.50 19.97 9.83 7.83 1968 -5.20 -5.80 5.10 9.20 12.30 19.60 21.30 22.40 18.00 12.00 3.90 -3.10 -4.10 8.87 21.10 11.30 9.29 1969 -7.00 -2.20 -0.80 7.70 13.40 15.40 20.40 22.10 17.20 9.10 1.80 -3.40 -4.10 6.77 19.30 9.37 7.83 1970 -9.90 -4.70 -0.40 8.40 13.80 19.00 23.40 22.60 17.20 11.90 3.40 -3.80 -6.00 7.27 21.67 10.83 8.44 1971 -10.20 -5.30 -1.40 5.40 11.10 20.20 20.50 19.90 18.80 13.60 3.40 -0.90 -6.43 5.03 20.20 11.93 7.68 1972 -8.50 -6.30 -1.90 4.60 13.30 16.90 21.20 21.10 16.80 9.10 2.80 -6.20 -5.23 5.33 19.73 9.57 7.35 1973 -3.70 -3.30 4.80 6.30 11.00 21.10 22.30 22.90 18.10 12.90 4.00 -3.20 -4.40 7.37 22.10 11.67 9.18 1974 -5.40 -4.70 1.40 8.20 10.70 17.30 22.30 20.00 14.80 10.30 4.00 -1.20 -4.43 6.77 19.87 9.70 7.97 1975 -4.10 -4.30 -1.50 3.60 14.30 19.10 22.50 22.20 15.10 12.70 7.30 -1.90 -3.20 5.47 21.27 11.70 8.81 1976 -7.20 -0.10 4.10 9.70 11.80 20.50 23.00 21.50 17.40 8.10 -1.00 -8.40 -3.07 8.53 21.67 8.17 8.82 1977 -12.80 -4.20 4.40 9.80 16.70 17.30 23.20 20.00 17.00 9.80 3.20 -4.70 -8.47 10.30 20.17 10.00 8.00 1978 -8.90 -8.30 -0.80 6.20 13.30 18.80 20.70 21.50 19.20 10.10 3.80 -4.30 -7.30 6.23 20.33 11.03 7.58 1979 -11.10 -9.10 1.00 5.90 13.00 18.50 21.90 20.70 18.50 10.90 3.70 0.00 -8.17 6.63 20.37 11.03 7.47 1980 -6.00 -6.20 -0.60 7.70 14.30 16.60 22.10 21.20 16.50 7.90 3.50 -4.00 -4.07 7.13 19.97 9.30 8.08 1981 -6.90 -3.40 2.40 8.50 11.20 18.70 19.80 20.10 15.50 7.90 3.10 -4.10 -4.77 7.37 19.53 8.83 7.74 1982 -12.20 -6.80 0.00 5.40 15.00 15.80 22.00 19.90 16.30 11.80 3.70 1.00 -7.70 6.80 19.23 10.60 7.23 1983 -2.80 -1.20 2.00 5.70 10.40 19.40 24.90 23.80 17.50 11.40 4.70 -9.50 -1.00 6.03 22.70 11.20 9.73 1984 -7.00 1.10 -1.30 7.80 13.00 20.70 22.40 23.20 16.40 11.90 3.50 -1.40 -5.13 6.50 22.10 10.60 8.52 1985 -9.20 -5.80 3.50 10.70 15.10 17.90 22.70 20.50 18.10 10.60 2.80 -8.90 -5.47 9.77 20.37 10.50 8.79 1986 -5.40 -4.70 3.60 9.40 13.60 17.60 22.70 19.70 17.90 11.10 1.90 -1.40 -6.33 8.87 20.00 10.30 8.21 1987 -3.90 0.20 3.40 9.10 15.80 22.60 24.00 21.30 17.60 8.10 5.70 -0.20 -1.70 9.43 22.63 10.47 10.21 1988 -7.40 -6.40 1.80 7.80 15.00 21.40 24.30 24.50 17.70 7.90 5.10 -2.80 -4.67 8.20 23.40 10.23 9.29 1989 -0.70 -7.60 0.40 6.40 12.90 18.20 22.20 20.70 15.90 11.70 1.90 -8.30 -3.70 6.57 20.37 9.83 8.27 1990 -0.30 -1.60 4.00 9.80 11.80 20.00 21.60 22.00 19.10 11.00 7.10 -2.80 -3.40 8.53 21.20 12.40 9.68 1991 -6.60 -1.10 3.60 9.90 17.40 21.60 23.70 23.10 17.40 11.40 1.80 -1.30 -3.50 10.30 22.80 10.20 9.95 1992 -2.20 0.00 1.90 6.20 13.80 17.30 19.90 19.80 16.50 9.90 3.00 -2.00 -1.17 7.30 19.00 9.80 8.73 1993 -3.50 -4.20 0.30 6.20 14.00 17.70 22.90 23.20 16.00 10.70 4.30 -1.10 -3.23 6.83 21.27 10.33 8.80 1994 -9.50 -5.70 2.20 9.00 14.00 21.30 23.40 21.20 19.80 13.50 6.80 1.50 -5.43 8.40 21.97 13.37 9.57 1995 -3.60 -3.50 3.70 6.80 14.50 22.10 23.70 24.30 16.20 11.80 -0.50 -4.40 -1.87 8.33 23.37 9.17 9.75 1996 -6.30 -4.10 -1.00 6.00 11.30 18.40 20.40 22.30 17.60 11.20 0.70 -2.80 -4.93 5.43 20.37 9.83 7.67 1997 -6.40 -2.30 2.20 6.70 9.70 18.10 20.60 19.20 16.40 10.90 1.70 -0.80 -3.83 6.20 19.30 9.67 7.83 1998 -3.10 1.40 2.30 7.80 15.60 19.40 22.30 22.20 19.40 12.20 6.20 0.00 -0.83 8.57 21.30 12.60 10.41 1999 -6.40 0.00 1.70 7.80 14.40 19.40 24.70 20.60 17.30 11.20 7.00 -1.70 -2.13 7.97 21.57 11.83 9.81 2000 -4.60 0.10 5.50 6.90 14.40 999.90 999.90 999.90 999.90 999.90 999.90 999.90 -2.07 8.93 999.90 999.90 999.90