YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1892 | 1.84 | 16.38 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.80 | y | 28.62 | w | ----- | z | -3.36 | t | 9.11 | j | ||
1893 | -6.96 | f | -2.82 | 12.23 | 29.67 | 42.77 | 60.17 | 60.35 | 56.06 | 48.57 | 36.57 | a | 18.69 | a | 0.16 | 32.95 | a | |||||||||
1894 | -0.61 | 2.29 | 24.00 | 38.57 | 44.71 | 57.63 | 59.87 | 57.16 | 48.77 | 37.97 | 17.40 | 17.68 | 33.79 | |||||||||||||
1895 | -6.06 | -1.00 | 17.00 | c | 38.67 | 46.71 | 54.93 | 55.32 | 54.87 | 51.37 | 30.33 | a | 19.90 | 11.90 | 31.16 | |||||||||||
1896 | 4.19 | 10.36 | a | 13.65 | 36.70 | 51.84 | 54.69 | a | 58.30 | a | 55.58 | 43.83 | 32.84 | 12.27 | 14.00 | a | 32.35 | |||||||||
1897 | -2.68 | 9.32 | 12.94 | 34.17 | 42.97 | 56.07 | 65.45 | 57.32 | 56.97 | a | 43.77 | 18.79 | b | 6.00 | a | 33.42 | ||||||||||
1898 | 13.19 | 8.85 | a | 24.60 | a | 34.93 | 47.47 | a | 58.96 | f | 61.80 | a | 58.40 | a | 50.60 | 36.77 | 18.80 | 2.83 | a | 32.57 | a | |||||
1899 | 1.81 | -2.75 | 6.10 | 35.43 | 47.70 | a | 58.27 | 61.67 | a | 62.03 | b | 48.13 | ----- | z | 31.87 | 12.03 | a | 32.94 | a | |||||||
1900 | 10.07 | a | -4.14 | 15.77 | 38.93 | 47.52 | 55.17 | 59.77 | 64.52 | 50.69 | a | 47.55 | 20.10 | 10.63 | a | 34.71 | ||||||||||
1901 | 3.00 | 0.11 | 18.30 | d | 36.33 | 46.71 | 56.50 | 63.97 | 57.13 | a | 48.33 | 39.00 | a | 20.07 | 4.45 | 32.82 | ||||||||||
1902 | 7.26 | 5.54 | 24.45 | 31.03 | 48.65 | 51.30 | 58.66 | b | 55.48 | d | 46.21 | b | 37.48 | 28.59 | a | 4.13 | 33.23 | |||||||||
1903 | 2.24 | f | 0.25 | 24.97 | b | 33.07 | a | 47.52 | b | 52.39 | b | 57.88 | e | 53.73 | e | 46.47 | 36.86 | b | 19.20 | -1.52 | 33.71 | a | ||||
1904 | -4.63 | a | -7.39 | a | 18.10 | 29.47 | 44.13 | a | 53.13 | 54.93 | a | 54.00 | a | 48.00 | 39.58 | 28.10 | 10.65 | 30.67 | ||||||||
1905 | -5.20 | a | -1.15 | a | 25.52 | 33.53 | 42.52 | 54.43 | 58.39 | 58.06 | 52.69 | a | 35.53 | a | 25.27 | 13.64 | f | 34.51 | a | |||||||
1906 | 7.70 | a | 3.58 | b | 13.00 | 37.24 | m | 45.33 | a | 55.30 | c | 58.50 | a | 60.79 | q | 52.68 | b | 40.09 | h | ----- | z | 9.22 | d | 30.66 | d | |
1907 | -4.07 | a | 6.11 | a | 19.77 | 25.76 | a | 35.94 | 54.07 | a | 57.52 | 54.13 | 51.19 | i | ----- | z | 24.57 | b | 13.35 | 28.72 | b | |||||
1908 | 6.55 | 11.83 | 18.60 | a | 35.28 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9.94 | 16.44 | g | |||
1909 | 2.84 | 6.04 | 20.03 | 28.00 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.77 | 3.55 | 11.84 | g | |||||
1910 | 3.77 | -1.89 | 30.04 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.53 | p | 19.83 | 8.29 | 12.01 | g | ||||
1911 | -1.81 | 10.71 | ----- | z | 40.67 | o | 48.04 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.90 | t | 14.59 | b | 7.83 | i | ||
1912 | -13.23 | 3.21 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.62 | v | 13.00 | 0.99 | i | |||
1913 | 0.13 | 0.79 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.30 | 20.55 | 12.94 | h | ||||
1914 | 11.16 | -3.89 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.07 | a | 43.38 | b | 25.00 | a | 2.17 | a | 21.31 | f | ||
1915 | 1.63 | a | 16.54 | 17.63 | a | 43.17 | 42.48 | 51.23 | d | 57.86 | b | 53.10 | 49.60 | 37.93 | a | 24.67 | 12.52 | 34.03 | ||||||||
1916 | -4.93 | a | -0.25 | a | 16.13 | 32.80 | 42.07 | b | 51.07 | a | 65.67 | d | 58.16 | 48.43 | 35.69 | b | 21.97 | -0.45 | 30.53 | |||||||
1917 | -5.75 | c | -7.70 | a | 15.58 | 31.63 | 41.52 | 52.40 | 62.66 | b | 54.97 | 48.00 | 28.77 | a | 29.20 | -3.13 | a | 29.01 | ||||||||
1918 | -8.35 | 3.50 | 25.80 | a | 30.57 | 47.83 | b | 56.20 | 60.13 | 59.00 | c | 42.37 | 39.97 | 27.41 | a | 20.55 | 33.75 | |||||||||
1919 | 11.81 | 3.17 | e | 19.26 | 35.15 | c | 47.23 | 61.00 | 62.97 | 57.55 | 53.00 | 34.68 | 17.53 | 0.90 | 33.69 | |||||||||||
1920 | -4.45 | 6.48 | b | 18.55 | 27.67 | 45.73 | a | 57.40 | 59.39 | 57.53 | a | 53.89 | b | 45.13 | 25.00 | 15.65 | 34.00 | |||||||||
1921 | 11.48 | 13.71 | 23.23 | 38.70 | 49.52 | 62.93 | 65.55 | 59.43 | c | 52.78 | c | 40.83 | a | 19.43 | 10.87 | 37.37 | ||||||||||
1922 | 2.60 | a | -2.79 | 22.13 | a | 34.45 | a | 52.97 | 58.76 | a | 58.55 | 61.58 | 54.43 | 42.16 | 32.69 | a | 6.29 | c | 35.32 | |||||||
1923 | 6.10 | -3.64 | 9.42 | 31.87 | 46.13 | 59.23 | 63.70 | a | 55.33 | a | 51.17 | 36.32 | 28.50 | 18.16 | 33.52 | |||||||||||
1924 | -5.71 | 11.59 | 21.68 | 33.17 | 39.35 | 52.50 | 57.21 | b | 56.06 | 47.70 | 44.87 | 23.00 | -1.71 | 31.64 | ||||||||||||
1925 | 0.42 | 11.19 | a | 23.32 | 41.00 | 41.23 | 54.66 | a | 57.93 | b | 59.57 | c | 54.31 | a | 29.03 | 21.83 | a | 7.29 | 33.48 | |||||||
1926 | 4.19 | 13.14 | 14.45 | b | 29.33 | 48.61 | 51.96 | b | 60.97 | b | 59.07 | c | 48.10 | a | 36.41 | b | 19.23 | 4.90 | 32.53 | |||||||
1927 | 3.26 | 13.41 | a | 26.00 | 35.80 | e | 44.87 | a | 53.93 | b | 57.66 | b | 53.20 | a | ----- | z | 38.90 | 21.53 | -3.87 | 31.33 | a | |||||
1928 | 5.94 | 11.21 | 21.27 | a | 28.60 | 49.21 | b | 51.04 | e | 60.10 | ----- | z | ----- | z | 32.33 | p | 27.60 | 15.73 | a | 30.08 | c | |||||
1929 | -10.52 | -1.69 | b | 23.74 | 35.43 | 41.52 | 52.77 | d | 59.29 | n | 58.15 | d | 47.93 | a | 39.39 | 19.43 | 8.65 | 28.62 | a | |||||||
1930 | -5.94 | 16.44 | a | 20.81 | 36.43 | 47.30 | a | 56.38 | d | 62.13 | 61.00 | a | 47.71 | b | 36.90 | 24.03 | 13.50 | a | 34.73 | |||||||
1931 | 14.48 | 20.11 | 21.87 | 36.24 | a | 43.67 | a | 61.07 | 61.94 | 57.23 | 55.79 | a | 42.55 | 28.53 | 21.32 | 38.73 | ||||||||||
1932 | 6.41 | b | 6.52 | 12.52 | 34.47 | 46.71 | 59.11 | c | 59.93 | a | 58.83 | a | 45.53 | 35.13 | 18.80 | 2.16 | 32.18 | |||||||||
1933 | 9.29 | -0.61 | 20.48 | 32.17 | 45.69 | b | 62.70 | 64.50 | c | 56.30 | a | 55.30 | 34.39 | 19.28 | a | 3.81 | 33.61 | |||||||||
1934 | 9.77 | 7.29 | 14.52 | 33.23 | 52.52 | 59.44 | c | 65.00 | b | 59.17 | a | 48.00 | 44.45 | 30.77 | 4.48 | 35.72 | ||||||||||
1935 | -1.97 | a | 16.93 | 24.39 | 34.57 | 44.23 | 53.54 | b | 67.42 | 60.32 | 48.73 | 36.32 | 19.43 | 8.68 | 34.38 | |||||||||||
1936 | -7.52 | -11.93 | 20.26 | 28.77 | 50.65 | 53.58 | d | 64.97 | b | 61.87 | a | 53.37 | 33.45 | 20.27 | 9.77 | 31.46 | ||||||||||
1937 | -9.03 | 1.14 | 16.10 | 34.27 | 47.24 | b | 54.72 | a | 62.55 | b | 65.06 | 50.70 | 35.58 | 21.27 | 6.55 | 32.18 | ||||||||||
1938 | 3.48 | b | 10.96 | 25.23 | 33.86 | a | 45.66 | b | 55.20 | 61.90 | 61.42 | 50.30 | 41.84 | 21.57 | 10.84 | 35.19 | ||||||||||
1939 | 9.03 | -4.59 | a | 16.81 | 30.93 | c | 49.94 | 56.66 | a | 61.50 | a | 58.29 | 51.38 | a | 37.06 | 26.07 | a | 16.69 | b | 34.15 | ||||||
1940 | -3.37 | a | 10.41 | 14.45 | 32.27 | 42.90 | 55.61 | b | 61.16 | 58.58 | 52.21 | a | 42.48 | 19.57 | 12.03 | 33.19 | ||||||||||
1941 | 7.10 | 3.54 | b | 18.13 | 40.70 | 51.87 | a | 58.23 | 62.61 | 59.87 | 52.17 | 41.03 | a | 27.07 | 17.03 | 36.61 | ||||||||||
1942 | 9.94 | 11.39 | 26.68 | 38.60 | 45.35 | 55.63 | 59.81 | 59.71 | 47.30 | 39.00 | 23.43 | 6.48 | 35.28 | |||||||||||||
1943 | -3.20 | a | 5.68 | 13.10 | 32.40 | 44.19 | 59.63 | 63.03 | 61.11 | d | 44.40 | j | 37.90 | 20.70 | 13.71 | 31.66 | a | |||||||||
1944 | 17.39 | 8.59 | 17.55 | 32.00 | 50.68 | 58.37 | 60.00 | 60.42 | 51.13 | 39.03 | 31.50 | 11.03 | 36.47 | |||||||||||||
1945 | 3.94 | 7.21 | 28.45 | 33.67 | 40.71 | 51.73 | 59.48 | 59.87 | 48.93 | 36.61 | 23.43 | 5.00 | 33.25 | |||||||||||||
1946 | 4.29 | 5.18 | 31.35 | 39.20 | 43.29 | 56.27 | 62.39 | 56.32 | 49.30 | 40.55 | 23.03 | 11.10 | a | 35.19 | ||||||||||||
1947 | 10.77 | a | 4.96 | 20.48 | 32.90 | 41.30 | a | 53.27 | 60.74 | 66.55 | 51.33 | 48.58 | 18.41 | a | 8.19 | 34.79 | ||||||||||
1948 | -1.65 | 3.97 | 15.58 | 38.10 | 46.03 | 56.10 | 62.55 | 59.42 | 53.87 | 38.39 | 25.73 | 8.21 | b | 33.86 | ||||||||||||
1949 | 1.24 | f | -0.70 | a | 19.65 | 34.69 | a | 48.40 | a | 57.48 | a | 62.58 | 61.06 | 46.43 | 40.77 | 27.87 | 9.87 | 37.10 | a | |||||||
1950 | -6.83 | a | 4.36 | 14.39 | 27.90 | 43.68 | 55.28 | a | 57.45 | 53.30 | a | 49.10 | 39.84 | 16.83 | 2.10 | 29.78 | ||||||||||
1951 | -2.84 | 6.75 | 10.19 | 31.90 | 48.73 | a | 51.73 | 58.10 | 55.74 | 44.27 | 38.20 | a | 16.30 | 3.26 | d | 30.19 | ||||||||||
1952 | 0.74 | 13.66 | 15.74 | 37.03 | 46.29 | 58.07 | 60.03 | 57.10 | 50.07 | 31.48 | 24.73 | 16.06 | 34.25 | |||||||||||||
1953 | 7.06 | 6.82 | 20.65 | 31.47 | 45.97 | 57.93 | a | 59.13 | 60.13 | 46.57 | 42.43 | a | 28.80 | 11.23 | 34.85 | |||||||||||
1954 | -1.48 | 22.14 | 18.19 | 34.17 | 42.06 | 58.74 | c | 62.16 | 58.06 | 49.97 | a | 38.23 | 29.00 | 15.33 | a | 35.55 | ||||||||||
1955 | 3.97 | 1.32 | 13.29 | 40.90 | 50.66 | b | 55.75 | b | 65.72 | f | 64.00 | 50.27 | 39.65 | 16.07 | -0.21 | c | 30.51 | a | ||||||||
1956 | 2.10 | 3.34 | 15.84 | 29.77 | 45.87 | 59.33 | 56.93 | a | 56.84 | 45.79 | a | 44.94 | 24.57 | 14.26 | 33.30 | |||||||||||
1957 | -1.39 | 8.89 | 18.87 | 33.07 | 44.87 | 54.17 | 63.93 | a | 59.19 | 48.10 | 37.84 | 25.43 | 15.81 | 34.07 | ||||||||||||
1958 | 13.81 | 3.79 | 21.03 | 35.07 | 47.00 | 50.90 | 57.87 | 58.03 | 50.67 | 39.90 | 24.23 | 4.90 | 33.93 | |||||||||||||
1959 | 0.10 | 5.79 | 21.87 | 33.07 | 48.48 | 58.00 | 59.06 | 61.00 | 48.87 | 33.84 | 14.93 | 19.61 | 33.72 | |||||||||||||
1960 | 5.06 | 6.62 | 8.58 | 33.37 | 43.93 | a | 49.87 | 56.71 | 58.17 | b | 50.73 | 39.58 | 27.00 | 9.68 | 32.44 | |||||||||||
1961 | 5.42 | 15.18 | 26.10 | 29.43 | 42.00 | 55.07 | 57.29 | 57.84 | 47.27 | 37.60 | a | 23.87 | 5.55 | 33.55 | ||||||||||||
1962 | -4.39 | 6.07 | 19.13 | 31.83 | 51.27 | a | 56.10 | 58.94 | 58.90 | 48.52 | a | 42.16 | 29.50 | 12.35 | 34.20 | |||||||||||
1963 | -3.81 | 4.00 | 25.71 | 37.43 | 45.84 | 58.93 | 62.03 | 59.06 | 53.63 | 48.84 | 30.80 | 1.94 | 35.37 | |||||||||||||
1964 | 11.90 | 13.31 | 14.80 | a | 35.55 | a | 49.90 | 57.43 | 64.52 | 56.68 | 50.79 | a | 39.26 | 26.33 | 4.42 | 35.41 | ||||||||||
1965 | -1.42 | 0.82 | 8.61 | 34.03 | 49.90 | 56.33 | 59.84 | 58.03 | 46.00 | 40.23 | 24.67 | 20.70 | a | 33.15 | ||||||||||||
1966 | -7.52 | 4.61 | 27.35 | 32.40 | 41.65 | 57.23 | 64.29 | 57.39 | 50.43 | 38.13 | a | 20.86 | a | 8.94 | 32.98 | |||||||||||
1967 | 5.16 | -2.50 | 20.13 | 35.90 | a | 41.26 | 56.73 | 59.00 | 56.26 | 48.80 | 37.68 | 23.33 | 13.77 | 32.96 | ||||||||||||
1968 | 5.10 | 3.83 | 27.26 | 37.31 | a | 43.53 | a | 57.03 | 60.87 | 60.06 | 50.60 | 41.65 | 27.20 | 9.26 | 35.31 | |||||||||||
1969 | -1.16 | 10.11 | 13.48 | 38.53 | 49.13 | 51.10 | 61.65 | 61.06 | 51.70 | 36.81 | 26.07 | a | 14.74 | 34.43 | ||||||||||||
1970 | -3.74 | 3.54 | 15.42 | 34.33 | 46.90 | 60.07 | 63.58 | 60.00 | 49.67 | 40.58 | 24.23 | 7.94 | 33.54 | |||||||||||||
1971 | -3.29 | 8.54 | 18.45 | 33.63 | 43.97 | 61.27 | 57.58 | 56.81 | 51.03 | 43.58 | 25.07 | 9.55 | 33.85 | |||||||||||||
1972 | -4.61 | -0.21 | 16.68 | 30.63 | 49.32 | 51.70 | 56.94 | 58.60 | a | 44.79 | b | 31.93 | a | 24.87 | 0.20 | a | 30.07 | |||||||||
1973 | 3.57 | a | 8.46 | 30.19 | 31.29 | b | 42.26 | 56.47 | 59.35 | 60.23 | 46.80 | 41.57 | a | 24.28 | a | 6.26 | 34.23 | |||||||||
1974 | -2.62 | b | 0.61 | 16.90 | 32.90 | 41.70 | a | 51.53 | 60.84 | 53.48 | 40.27 | 34.79 | g | 24.55 | a | 14.52 | 30.43 | a | ||||||||
1975 | 3.27 | a | 5.64 | 10.48 | 27.53 | 46.84 | 56.43 | 60.16 | 55.13 | a | 42.32 | b | 34.08 | e | 24.20 | 7.07 | a | 31.10 | ||||||||
1976 | -3.50 | a | 13.03 | 15.10 | 34.90 | a | 40.73 | a | 53.55 | a | 55.39 | 54.48 | 45.17 | a | 28.40 | a | 14.90 | -3.19 | 29.08 | |||||||
1977 | -13.71 | 9.14 | 25.90 | 39.87 | 52.80 | a | 53.43 | b | 57.75 | c | 49.81 | 46.40 | 31.94 | 18.03 | 2.00 | 31.11 | ||||||||||
1978 | -9.74 | -6.00 | 16.65 | 32.90 | 46.13 | 52.14 | b | 56.97 | b | 56.86 | b | 51.23 | 33.77 | 17.37 | c | -0.21 | b | 29.01 | ||||||||
1979 | -11.81 | -5.11 | 16.37 | a | 27.85 | c | 39.42 | 51.10 | 55.81 | 50.87 | a | 49.76 | e | 35.45 | 22.93 | 11.54 | c | 28.68 | ||||||||
1980 | 3.03 | a | 0.07 | 13.13 | 31.63 | c | 43.07 | a | 51.13 | 57.32 | 55.16 | 46.67 | 33.10 | 23.76 | a | 8.79 | b | 30.57 | ||||||||
1981 | 4.29 | 11.54 | 23.80 | a | 35.31 | a | 43.10 | a | 51.73 | d | 56.10 | b | 55.30 | h | ----- | z | 33.70 | a | 25.36 | b | 6.60 | a | 29.15 | b | ||
1982 | -12.45 | 3.31 | b | 17.87 | a | 29.70 | 49.52 | 48.89 | b | 59.73 | a | 53.48 | 47.00 | 37.26 | 17.59 | a | 14.96 | c | 30.57 | |||||||
1983 | 8.03 | b | 18.73 | b | 26.06 | 32.76 | a | 43.80 | a | 55.88 | d | 64.97 | b | 63.87 | 52.30 | c | 40.21 | b | 28.14 | b | -5.93 | c | 35.74 | |||
1984 | 1.86 | c | 20.04 | d | 15.22 | d | 37.79 | a | 44.33 | d | 57.57 | b | 58.67 | a | 61.19 | 45.20 | 42.22 | d | 25.44 | e | 7.93 | c | 34.79 | |||
1985 | -1.67 | d | 4.12 | b | 27.33 | a | ----- | z | 50.84 | 51.73 | 58.13 | a | 55.00 | a | 49.28 | a | 35.93 | c | 17.86 | b | -5.08 | g | 34.85 | b | ||
1986 | 8.28 | b | 4.67 | d | 25.41 | d | ----- | z | 43.79 | l | 56.21 | a | 60.97 | b | 54.83 | g | 50.19 | c | ----- | z | 23.36 | h | ----- | z | 34.28 | f |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.21 | 5.47 | 19.20 | 33.92 | 45.79 | 55.49 | 60.34 | 58.02 | 49.33 | 38.31 | 23.31 | 8.70 | 33.34 | |||||||||||||
S.D. | 6.84 | 6.82 | 5.46 | 3.51 | 3.52 | 3.15 | 2.80 | 3.10 | 3.13 | 4.27 | 4.44 | 6.23 | 2.07 | |||||||||||||
SKEW | -0.01 | 0.12 | 0.05 | 0.17 | -0.02 | 0.14 | 0.29 | 0.09 | -0.19 | 0.02 | -0.07 | -0.11 | -0.30 | |||||||||||||
MAX | 17.39 | 22.14 | 31.35 | 43.17 | 52.97 | 62.93 | 67.42 | 66.55 | 56.97 | 48.84 | 32.69 | 21.32 | 38.73 | |||||||||||||
MIN | -13.71 | -11.93 | 6.10 | 25.76 | 35.94 | 48.89 | 54.93 | 49.81 | 40.27 | 28.40 | 12.27 | -5.93 | 28.68 | |||||||||||||
YRS | 92 | 95 | 90 | 85 | 86 | 86 | 85 | 83 | 83 | 82 | 89 | 91 | 70 |