YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | -5.00 | b | -1.58 | b | 8.28 | b | 24.41 | a | 35.83 | a | 53.68 | b | 56.16 | 47.90 | 40.80 | 34.24 | b | 19.29 | b | 3.07 | c | 26.42 | ||||
1894 | 4.29 | 3.90 | g | 20.19 | d | 32.87 | 38.61 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.99 | h | |||
1895 | ----- | z | ----- | z | 8.80 | a | 31.77 | 42.45 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.67 | i | ||
1896 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | 2.90 | a | 7.50 | 24.19 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 11.53 | i | ||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | 0.19 | -3.68 | 14.45 | 25.50 | 43.19 | 45.43 | 48.29 | 48.26 | 40.37 | 36.65 | 24.21 | a | 8.74 | 27.63 | ||||||||||||
1963 | -5.58 | -6.32 | 10.81 | 26.57 | 34.29 | 47.60 | 51.26 | 48.03 | 41.20 | 38.03 | 27.23 | 1.71 | 26.24 | |||||||||||||
1964 | 9.52 | 2.48 | 8.52 | 27.50 | 42.23 | 44.87 | 52.90 | 49.42 | 43.57 | 30.97 | 23.53 | 5.35 | 28.40 | |||||||||||||
1965 | -1.90 | -3.32 | 6.87 | 25.17 | 42.03 | 44.03 | 47.13 | 49.81 | 41.10 | 35.00 | 22.70 | 17.00 | 27.13 | |||||||||||||
1966 | -4.65 | 7.14 | 18.87 | 24.31 | a | 31.61 | 47.40 | 52.23 | 48.13 | 38.24 | a | 29.42 | 22.17 | 7.06 | 26.83 | |||||||||||
1967 | 3.50 | a | -9.04 | a | 7.19 | 25.57 | 29.94 | 48.63 | 48.10 | 45.06 | 38.13 | 31.26 | 18.83 | 6.61 | 24.48 | |||||||||||
1968 | -3.35 | -2.00 | 17.39 | 29.17 | 35.81 | 47.67 | 51.35 | 47.42 | 45.33 | 35.74 | 23.10 | 7.48 | 27.93 | |||||||||||||
1969 | 4.94 | -0.18 | 4.48 | 28.13 | 35.97 | 42.87 | 49.97 | 49.77 | 41.50 | 31.16 | 18.47 | 8.48 | 26.30 | |||||||||||||
1970 | -6.19 | -7.07 | 4.03 | 26.70 | 38.03 | 47.20 | 53.77 | 49.06 | 42.50 | 34.35 | 22.07 | 5.87 | 25.86 | |||||||||||||
1971 | -7.19 | -2.46 | 6.32 | 23.97 | 33.35 | 49.57 | 47.71 | 45.29 | 44.43 | 42.48 | 23.33 | 7.19 | 26.17 | |||||||||||||
1972 | -12.74 | -7.31 | 5.13 | 19.80 | 37.77 | 44.60 | 51.23 | 49.58 | 39.40 | 29.90 | 22.70 | 3.65 | 23.64 | |||||||||||||
1973 | 2.06 | -0.93 | 24.16 | 27.43 | 36.39 | 48.47 | 51.94 | 52.81 | 42.50 | 37.87 | 23.10 | 5.03 | 29.24 | |||||||||||||
1974 | -3.19 | -10.68 | 9.55 | 25.60 | 33.77 | 42.33 | 50.13 | 48.61 | 35.23 | 28.74 | 22.47 | 11.61 | 24.52 | |||||||||||||
1975 | -1.55 | 3.64 | 5.90 | 18.47 | 40.23 | 49.43 | 52.45 | 47.81 | 37.10 | 30.42 | 21.83 | 3.39 | 25.76 | |||||||||||||
1976 | -7.84 | 4.07 | 8.29 | 26.80 | 31.74 | 46.67 | 48.23 | 44.87 | 33.97 | 23.84 | 11.37 | -6.52 | 22.12 | |||||||||||||
1977 | -12.90 | -0.36 | 17.29 | 27.23 | 42.35 | 44.53 | 52.39 | 41.77 | 44.21 | a | 29.58 | 21.33 | 6.48 | 26.16 | ||||||||||||
1978 | -0.93 | a | -4.32 | 6.90 | 25.63 | 39.10 | a | 44.67 | 50.94 | 50.61 | 45.67 | 32.32 | 17.50 | 0.03 | 25.68 | |||||||||||
1979 | -10.06 | -11.36 | 11.68 | 22.57 | 34.26 | 44.80 | 51.29 | 48.10 | 40.60 | 32.55 | 19.53 | 11.06 | 24.58 | |||||||||||||
1980 | 0.16 | -4.17 | 5.58 | 27.57 | 38.40 | a | 44.50 | 51.42 | 53.10 | 40.43 | 29.35 | 22.07 | 4.26 | 26.06 | ||||||||||||
1981 | -5.23 | 5.43 | 14.71 | 28.27 | 33.68 | 48.30 | 51.23 | 52.90 | 40.57 | 29.42 | 23.87 | 8.03 | 27.60 | |||||||||||||
1982 | -12.65 | -6.50 | 9.58 | 20.60 | 43.45 | 40.17 | 52.84 | 46.77 | 42.37 | 34.57 | a | 19.90 | 16.00 | 25.59 | ||||||||||||
1983 | 6.00 | 12.15 | a | 17.93 | a | 25.60 | 32.83 | a | 46.57 | 56.61 | 54.39 | 44.33 | 32.77 | 23.83 | -4.42 | 29.05 | ||||||||||
1984 | -8.00 | 13.71 | a | 4.23 | 29.23 | 34.65 | 50.13 | 49.55 | 53.74 | 39.90 | 37.16 | 19.63 | 8.94 | 27.74 | ||||||||||||
1985 | -2.58 | -2.04 | 17.10 | 29.40 | 40.90 | 44.10 | a | 50.00 | 50.29 | 44.23 | 32.19 | 18.23 | -3.76 | b | 26.51 | |||||||||||
1986 | 0.73 | a | -0.54 | 12.84 | 32.83 | 42.19 | 45.07 | 54.74 | 47.62 | b | 44.73 | 30.74 | 15.53 | 9.87 | a | 28.03 | ||||||||||
1987 | 5.90 | 7.14 | 16.13 | 29.23 | 39.52 | 50.00 | b | 55.06 | 51.03 | a | 42.21 | a | 27.87 | 23.87 | 15.60 | a | 30.30 | |||||||||
1988 | -1.63 | a | -4.72 | 13.35 | 27.45 | a | 37.74 | 48.67 | 53.10 | 54.90 | 43.31 | a | 29.16 | 26.50 | 5.19 | 27.75 | ||||||||||
1989 | 5.94 | -5.74 | a | 6.16 | 25.19 | d | 37.70 | d | 46.69 | d | 52.65 | e | 50.96 | d | 41.92 | d | 33.96 | g | 15.84 | e | -5.80 | f | 27.73 | b | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -2.16 | -1.03 | 11.47 | 26.47 | 37.42 | 46.50 | 51.54 | 49.24 | 41.37 | 32.42 | 21.17 | 6.18 | 26.56 | |||||||||||||
S.D. | 5.97 | 6.36 | 5.86 | 3.33 | 3.83 | 2.81 | 2.41 | 3.04 | 2.89 | 3.87 | 3.40 | 5.63 | 1.77 | |||||||||||||
SKEW | -0.08 | 0.58 | 0.61 | -0.31 | -0.06 | 0.17 | 0.15 | -0.12 | -0.74 | 0.43 | -0.82 | -0.25 | -0.24 | |||||||||||||
MAX | 9.52 | 13.71 | 24.19 | 32.87 | 43.45 | 53.68 | 56.61 | 54.90 | 45.67 | 42.48 | 27.23 | 17.00 | 30.30 | |||||||||||||
MIN | -12.90 | -11.36 | 4.03 | 18.47 | 29.94 | 40.17 | 47.13 | 41.77 | 33.97 | 23.84 | 11.37 | -6.52 | 22.12 | |||||||||||||
YRS | 31 | 30 | 32 | 31 | 31 | 29 | 29 | 29 | 29 | 28 | 29 | 28 | 28 |