YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1892 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.47 | p | ----- | z |
1893 | 18.90 | 23.76 | c | 27.35 | 35.53 | 43.84 | 51.55 | a | 56.26 | 54.97 | 47.37 | 31.81 | 25.70 | 22.03 | a | 36.59 | ||||||||||
1894 | 19.97 | 15.50 | 27.71 | 35.23 | 44.16 | 49.23 | 53.74 | 54.19 | 45.17 | 38.10 | 26.30 | 21.71 | 35.92 | |||||||||||||
1895 | 20.29 | 13.29 | 28.00 | a | 35.50 | 43.34 | b | 49.79 | a | 53.48 | 53.23 | 48.23 | 35.35 | 23.38 | a | 18.00 | 35.16 | |||||||||
1896 | 22.10 | 20.76 | 28.27 | a | 35.17 | 43.32 | 52.83 | 56.94 | 54.97 | 49.00 | a | 37.53 | a | 28.10 | 22.90 | 37.66 | ||||||||||
1897 | 18.52 | 24.46 | 28.13 | 34.50 | 46.25 | c | 50.37 | 54.06 | 53.03 | 49.60 | 37.73 | a | 26.97 | 17.07 | a | 36.72 | ||||||||||
1898 | 17.77 | 22.82 | 26.87 | 36.43 | 42.32 | 51.63 | 56.32 | 53.84 | 43.30 | 34.03 | 22.47 | 14.03 | a | 35.15 | ||||||||||||
1899 | 17.84 | 17.74 | a | 28.07 | a | 35.90 | 40.84 | 51.37 | 58.42 | 55.84 | 46.90 | 35.65 | 27.07 | 20.42 | 36.34 | |||||||||||
1900 | 20.84 | 19.41 | a | 28.35 | 31.97 | 44.10 | 51.27 | 58.55 | 56.61 | 51.43 | 42.19 | 31.47 | 22.90 | 38.26 | ||||||||||||
1901 | 23.39 | 24.89 | 24.26 | d | 30.04 | b | 43.39 | 49.50 | 54.93 | b | 55.35 | 46.72 | a | 36.97 | 28.14 | a | 17.79 | b | 36.28 | |||||||
1902 | 18.17 | a | 21.29 | 22.57 | a | 36.03 | a | 41.52 | j | 51.73 | d | 51.90 | 52.32 | 43.30 | 33.65 | 25.67 | 16.39 | 33.91 | a | |||||||
1903 | 18.94 | 11.07 | a | 23.32 | 32.80 | 37.48 | 46.03 | 51.81 | 51.39 | 44.07 | 31.55 | 24.97 | 12.16 | 32.13 | ||||||||||||
1904 | 13.23 | 27.48 | 30.26 | 30.80 | 40.65 | 46.87 | 52.52 | 52.39 | 45.67 | 34.48 | 20.93 | 15.03 | 34.19 | |||||||||||||
1905 | 16.74 | 19.07 | a | 31.94 | 32.33 | 42.03 | 49.57 | 50.84 | 50.81 | 45.53 | 33.26 | 28.57 | 14.74 | 34.62 | ||||||||||||
1906 | 17.65 | 21.46 | 24.84 | 34.47 | 40.39 | 48.10 | 50.94 | 49.94 | 43.93 | 31.16 | 24.50 | 23.00 | 34.20 | |||||||||||||
1907 | 24.07 | a | 22.89 | 30.71 | 31.17 | a | 36.35 | 43.90 | 51.19 | 52.06 | 43.90 | 35.13 | 20.37 | 17.45 | 34.10 | |||||||||||
1908 | 15.87 | 18.48 | 29.52 | 32.83 | 37.71 | 46.93 | a | 51.39 | 51.74 | 41.17 | 31.55 | 19.37 | 19.10 | 32.97 | ||||||||||||
1909 | 24.58 | 20.54 | 24.29 | 31.77 | 36.84 | 47.23 | 55.06 | 53.32 | 42.40 | 32.77 | 27.43 | 11.67 | a | 33.99 | ||||||||||||
1910 | 18.85 | d | 16.14 | 27.74 | 30.47 | 39.90 | a | 48.83 | a | 52.65 | 52.03 | 45.27 | 31.32 | 21.80 | ----- | z | 35.00 | a | ||||||||
1911 | 27.50 | a | 19.82 | 29.81 | 36.03 | 42.03 | 48.77 | 55.68 | 51.77 | 48.30 | 33.61 | 19.80 | 7.77 | 35.07 | ||||||||||||
1912 | 17.68 | 14.86 | 26.45 | 30.63 | 40.58 | 45.80 | 51.87 | 51.74 | 41.48 | a | 32.90 | 19.87 | 12.00 | a | 32.16 | |||||||||||
1913 | 11.35 | 18.64 | 24.42 | 31.40 | 41.42 | 48.53 | 52.03 | 51.45 | 41.07 | 33.32 | 28.33 | 8.03 | a | 32.50 | ||||||||||||
1914 | 25.42 | 20.07 | 23.55 | 32.73 | 42.87 | 50.50 | 53.55 | 51.90 | 46.43 | 34.06 | 22.27 | 16.03 | 34.95 | |||||||||||||
1915 | 11.80 | a | 20.25 | 21.39 | 35.17 | 38.26 | 46.97 | 53.61 | 50.45 | 45.63 | 32.07 | a | 23.43 | 17.32 | 33.03 | |||||||||||
1916 | 22.46 | c | 22.52 | 28.45 | b | 31.30 | 40.19 | 47.07 | 52.97 | 53.55 | 43.97 | 36.19 | 18.77 | 14.93 | a | 34.36 | ||||||||||
1917 | 16.00 | 18.54 | 20.39 | 29.07 | 36.10 | 47.22 | g | 54.52 | 50.93 | d | 45.73 | 32.32 | 24.03 | 20.06 | 31.61 | a | ||||||||||
1918 | 6.74 | 22.86 | 28.61 | 31.00 | 39.71 | 51.17 | 54.81 | 52.13 | 44.50 | 36.19 | 19.60 | 12.42 | 33.31 | |||||||||||||
1919 | 7.61 | 19.04 | 23.74 | 34.77 | 41.48 | 44.83 | 53.48 | 51.16 | 46.80 | 37.03 | 22.87 | 21.97 | 33.73 | |||||||||||||
1920 | 17.90 | 25.59 | 24.61 | 29.37 | 40.71 | 47.60 | 51.16 | 50.58 | 44.50 | 32.77 | 23.80 | 15.77 | 33.70 | |||||||||||||
1921 | 20.97 | 20.21 | 29.58 | 28.38 | a | 42.10 | 47.87 | 53.81 | 52.58 | 46.10 | 35.55 | 24.67 | 26.29 | 35.67 | ||||||||||||
1922 | 12.61 | 19.78 | a | 23.10 | 33.79 | a | 40.81 | 49.73 | 54.74 | 53.35 | 46.77 | 33.03 | 22.73 | 23.77 | 34.52 | |||||||||||
1923 | 22.06 | 17.89 | 23.00 | 35.50 | 40.00 | 49.63 | 53.45 | 53.10 | 44.20 | 33.77 | 23.00 | 16.87 | a | 34.37 | ||||||||||||
1924 | 13.55 | 18.93 | 20.93 | a | 29.30 | 39.74 | 50.17 | 53.92 | g | ----- | z | 42.22 | g | 36.23 | 24.00 | g | 12.26 | 27.64 | d | |||||||
1925 | 10.45 | 20.39 | 26.94 | 31.90 | 42.94 | 52.00 | 56.30 | d | 51.21 | g | 45.60 | 35.37 | a | 23.27 | 16.72 | b | 32.90 | a | ||||||||
1926 | 8.32 | c | 23.29 | 24.29 | 33.70 | 40.26 | d | 48.07 | 51.87 | a | 49.72 | f | 49.17 | 34.45 | 23.58 | d | 18.04 | c | 32.27 | a | ||||||
1927 | 21.97 | 25.71 | 25.69 | e | 32.89 | c | 40.45 | 47.40 | 54.00 | a | 51.11 | d | 49.26 | k | ----- | z | 28.67 | 14.52 | 34.24 | b | ||||||
1928 | 17.58 | 19.59 | 27.77 | 32.80 | ----- | z | 46.40 | 52.74 | 48.61 | 40.92 | d | 38.29 | 23.76 | a | 15.58 | 33.10 | a | |||||||||
1929 | 17.58 | 11.36 | 26.81 | 30.40 | 40.00 | 48.00 | 54.90 | 52.95 | k | 45.69 | d | 33.68 | 20.21 | a | 16.00 | 31.33 | a | |||||||||
1930 | 12.45 | 23.25 | 20.71 | 34.17 | 38.10 | a | 48.30 | 53.39 | 51.00 | 44.20 | 36.58 | 22.43 | 11.48 | 33.01 | ||||||||||||
1931 | 11.94 | 23.11 | 21.81 | 33.87 | 39.16 | 50.33 | 53.23 | 51.19 | 48.83 | 36.55 | 24.63 | 18.29 | 34.41 | |||||||||||||
1932 | 12.20 | a | 24.17 | 22.58 | 33.93 | 40.33 | a | 47.23 | 54.13 | 53.48 | 43.73 | 34.17 | a | 22.27 | 11.77 | 33.33 | ||||||||||
1933 | 19.74 | 14.64 | 26.97 | 30.47 | 39.16 | 50.20 | 54.87 | 52.61 | 49.10 | 36.06 | 24.60 | 23.68 | 35.18 | |||||||||||||
1934 | 15.90 | 26.32 | 27.94 | 34.13 | 43.58 | 48.07 | 55.68 | 55.10 | 44.93 | 36.39 | 26.82 | b | 19.35 | 36.18 | ||||||||||||
1935 | 20.13 | 19.11 | 28.32 | 34.70 | 39.52 | 48.17 | 51.94 | 53.84 | 43.47 | 35.42 | 24.77 | 18.90 | 34.86 | |||||||||||||
1936 | 16.13 | 22.96 | a | 26.71 | 34.03 | 44.32 | c | 52.27 | 55.29 | 54.45 | 46.43 | 34.16 | 21.63 | 17.87 | 35.52 | |||||||||||
1937 | 10.55 | 19.11 | 23.90 | 32.47 | 43.42 | 49.03 | 53.19 | 53.81 | 49.15 | c | 36.48 | 24.00 | 17.83 | a | 34.41 | |||||||||||
1938 | 16.33 | a | 24.77 | b | 29.35 | 32.47 | 39.48 | 49.80 | 52.35 | 51.84 | 50.44 | l | 36.87 | 20.28 | a | 18.19 | 33.79 | a | ||||||||
1939 | 15.84 | 13.71 | 27.52 | 33.30 | 40.10 | 65.77 | d | 58.45 | 63.68 | 48.43 | 38.77 | 22.57 | 17.55 | 37.14 | ||||||||||||
1940 | 14.84 | 18.48 | 25.52 | 33.43 | 41.74 | 48.57 | 54.06 | 52.32 | 52.67 | i | 32.55 | 14.27 | 12.61 | 31.67 | a | |||||||||||
1941 | 17.10 | 23.86 | 25.61 | 32.77 | 44.97 | a | 46.69 | d | 49.58 | 48.26 | 45.90 | 37.42 | 24.63 | 21.19 | 34.83 | |||||||||||
1942 | 15.45 | 14.00 | 20.39 | 35.50 | 40.65 | 48.77 | 49.82 | i | 52.06 | 44.45 | a | 35.58 | 28.54 | b | 21.94 | 32.48 | a | |||||||||
1943 | 18.69 | b | 22.04 | 22.90 | 34.53 | 43.23 | 49.73 | 53.19 | 54.48 | 43.80 | 33.00 | 21.00 | 12.35 | 34.08 | ||||||||||||
1944 | 14.16 | 22.45 | 21.55 | 30.13 | 40.03 | 48.23 | 52.32 | 53.42 | 44.93 | 36.17 | a | 26.97 | 20.71 | 34.26 | ||||||||||||
1945 | ----- | z | 24.75 | 24.87 | 28.23 | 39.90 | 46.20 | 52.26 | 53.32 | 43.83 | 35.61 | 25.43 | 14.07 | b | 35.32 | a | ||||||||||
1946 | 16.90 | a | 15.25 | 24.20 | a | 34.47 | 38.29 | 47.23 | 52.03 | 54.45 | 47.27 | 31.23 | 20.60 | 17.74 | 33.30 | |||||||||||
1947 | 14.35 | 17.96 | 22.13 | 31.80 | 40.77 | i | 46.83 | 53.32 | 53.93 | p | 45.88 | e | 36.81 | 20.00 | 18.71 | 30.78 | b | |||||||||
1948 | 13.53 | a | 18.48 | 17.57 | a | 34.93 | 41.00 | j | 47.00 | 51.03 | 52.03 | 46.40 | 41.17 | b | 17.03 | 20.41 | b | 32.69 | a | |||||||
1949 | 6.61 | c | 20.14 | 29.03 | 32.47 | 39.40 | k | 48.26 | g | 55.15 | e | 50.44 | d | 47.88 | d | 35.00 | k | 26.67 | i | 17.78 | d | 32.44 | d | |||
1950 | 24.26 | d | 23.50 | 24.93 | b | 35.97 | 40.50 | i | 50.93 | 54.13 | 51.20 | a | 45.07 | 41.03 | 26.00 | 25.45 | 36.59 | a | ||||||||
1951 | 17.00 | 19.04 | 27.42 | 31.87 | 42.42 | 47.70 | 56.81 | 54.74 | 46.20 | 37.23 | 22.73 | 20.32 | 35.29 | |||||||||||||
1952 | 25.55 | 21.10 | 23.33 | a | 33.20 | 41.03 | a | 54.40 | 53.55 | 55.29 | 46.10 | a | ----- | z | 17.83 | g | 16.32 | 36.99 | b | |||||||
1953 | 22.37 | d | 15.21 | 27.33 | d | 32.18 | h | 40.18 | c | 50.67 | c | 53.07 | c | 50.93 | b | 41.96 | g | 33.58 | g | 25.72 | a | 14.25 | o | 35.69 | d | |
1954 | 18.48 | 24.04 | 22.97 | 31.53 | 42.00 | 48.03 | 54.42 | 50.81 | 45.17 | 37.00 | a | 22.33 | 14.81 | 34.30 | ||||||||||||
1955 | 15.48 | 13.86 | 24.35 | 28.40 | 37.68 | 44.20 | 52.29 | 50.90 | 42.40 | 33.39 | 25.27 | 21.45 | 32.47 | |||||||||||||
1956 | 19.52 | 16.79 | 23.19 | 26.93 | 40.10 | 50.33 | 51.43 | a | 48.61 | 41.79 | a | 32.94 | 15.70 | 14.26 | 31.80 | |||||||||||
1957 | 23.68 | 26.07 | 26.48 | 28.73 | 39.97 | 47.50 | 54.87 | 51.68 | 38.73 | 36.39 | 15.83 | a | 19.29 | 34.10 | ||||||||||||
1958 | 12.70 | a | 21.93 | 21.06 | 29.10 | 42.06 | 47.87 | 51.19 | 50.74 | 46.03 | 33.84 | 22.50 | 16.42 | 32.95 | ||||||||||||
1959 | 12.32 | 18.25 | 18.97 | 30.33 | 41.29 | 48.33 | 51.10 | 53.03 | 40.73 | 32.65 | 18.37 | 16.94 | 31.86 | |||||||||||||
1960 | 12.81 | 16.21 | 24.55 | 31.52 | a | 36.58 | 47.57 | 50.68 | 48.65 | 43.60 | 32.03 | 23.77 | 13.03 | 31.75 | ||||||||||||
1961 | 12.00 | a | 21.14 | 24.94 | 28.87 | 39.58 | 46.07 | 49.00 | 50.68 | 43.23 | 30.87 | 22.30 | 13.13 | 31.82 | ||||||||||||
1962 | 12.68 | 21.64 | 17.65 | 30.76 | a | 38.65 | 43.40 | 50.65 | 46.06 | 44.30 | 32.71 | 21.07 | 17.35 | 31.41 | ||||||||||||
1963 | 8.10 | 17.50 | 23.81 | 36.13 | 41.26 | 45.10 | 51.97 | 51.61 | 45.20 | 34.03 | 20.83 | a | ----- | z | 34.14 | a | ||||||||||
1964 | 9.87 | a | 9.48 | 20.42 | 28.17 | 39.16 | 43.87 | 51.06 | 49.48 | 44.73 | 30.23 | 23.27 | 17.61 | 30.61 | ||||||||||||
1965 | 15.32 | 14.23 | b | 18.03 | 31.50 | 38.19 | 45.83 | 51.39 | 50.03 | 45.67 | 29.77 | 26.87 | 17.48 | 32.03 | ||||||||||||
1966 | 11.00 | 13.30 | a | 24.84 | 30.87 | 37.56 | f | 46.67 | o | 54.91 | i | 49.52 | 43.69 | a | 30.17 | a | 20.90 | 11.97 | 26.25 | c | ||||||
1967 | 10.87 | 17.64 | 28.27 | a | 33.80 | 34.09 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.65 | h | |||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.73 | a | 54.55 | 45.17 | 35.58 | 21.24 | a | 19.17 | a | 38.41 | f | |||
1970 | 12.90 | a | 21.14 | 21.63 | a | 27.80 | 39.39 | 45.63 | 54.00 | 52.52 | 43.24 | a | 30.43 | a | 25.27 | 17.81 | 32.65 | |||||||||
1971 | 14.32 | 16.04 | 22.10 | 29.43 | 36.26 | 45.47 | 53.32 | 50.81 | 43.23 | 35.16 | 28.23 | 12.71 | 32.26 | |||||||||||||
1972 | 15.30 | a | 23.62 | 31.32 | 34.83 | 40.42 | 50.07 | 53.13 | 51.71 | 48.70 | 39.35 | 20.63 | 20.35 | 35.79 | ||||||||||||
1973 | 17.13 | 20.75 | 25.81 | 27.97 | 39.48 | 46.90 | 53.03 | 51.06 | 44.20 | 35.84 | 28.83 | 19.32 | 34.19 | |||||||||||||
1974 | 19.29 | 18.79 | 32.52 | 32.30 | 45.13 | 49.77 | 53.42 | 49.81 | 44.20 | 39.84 | 25.50 | 15.52 | 35.51 | |||||||||||||
1975 | 19.58 | 20.07 | a | 25.45 | 32.20 | 39.16 | 47.97 | 52.87 | 53.16 | 44.83 | 38.13 | 26.93 | 21.87 | 35.19 | ||||||||||||
1976 | 18.00 | 27.52 | 26.97 | 35.37 | 39.84 | 49.67 | 54.32 | 51.65 | 46.67 | 32.52 | 21.63 | 17.32 | 35.12 | |||||||||||||
1977 | 14.55 | 21.57 | 25.13 | 34.60 | 43.52 | 51.03 | 54.84 | 55.58 | 48.90 | a | 36.23 | 28.17 | 23.70 | a | 36.48 | |||||||||||
1978 | 17.84 | 20.46 | 27.70 | a | 35.83 | 40.45 | 51.59 | a | 56.39 | 51.68 | 46.83 | 36.52 | 28.46 | d | 17.27 | a | 35.92 | |||||||||
1979 | 12.07 | a | 20.79 | 27.65 | 34.87 | 42.06 | 50.33 | 53.53 | a | 51.57 | a | 47.07 | 39.97 | 21.93 | 21.10 | 35.24 | ||||||||||
1980 | 21.77 | a | 24.79 | a | 24.58 | 30.17 | 41.97 | b | 51.29 | b | 56.93 | c | 54.26 | 49.13 | 34.20 | a | 25.45 | a | 25.87 | 36.70 | ||||||
1981 | 21.00 | 21.14 | 25.35 | 35.57 | g | 40.93 | b | 53.45 | a | 55.41 | d | 52.29 | 47.83 | 39.55 | 29.53 | 22.69 | b | 37.20 | a | |||||||
1982 | 19.97 | b | 17.89 | j | 29.41 | i | 34.19 | i | 41.08 | g | 49.61 | b | 56.19 | 56.13 | 50.90 | 35.95 | l | 25.52 | a | 20.96 | c | 39.90 | e | |||
1983 | 23.33 | d | 21.31 | b | 27.36 | c | 28.83 | a | 39.28 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.02 | g |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 16.72 | 19.98 | 25.31 | 32.40 | 40.71 | 48.81 | 53.55 | 52.35 | 45.45 | 34.98 | 23.64 | 17.61 | 34.34 | |||||||||||||
S.D. | 4.63 | 3.84 | 3.24 | 2.46 | 2.17 | 2.95 | 1.98 | 2.33 | 2.43 | 2.73 | 3.39 | 3.93 | 1.66 | |||||||||||||
SKEW | -0.03 | -0.41 | -0.23 | -0.25 | 0.11 | 2.19 | 0.35 | 1.19 | 0.00 | 0.32 | -0.25 | -0.08 | -0.02 | |||||||||||||
MAX | 27.50 | 27.52 | 32.52 | 36.43 | 46.25 | 65.77 | 58.55 | 63.68 | 51.43 | 42.19 | 31.47 | 26.29 | 38.26 | |||||||||||||
MIN | 6.61 | 9.48 | 17.57 | 26.93 | 36.10 | 43.40 | 49.00 | 46.06 | 38.73 | 29.77 | 14.27 | 7.77 | 30.61 | |||||||||||||
YRS | 88 | 88 | 88 | 86 | 80 | 84 | 85 | 83 | 83 | 83 | 85 | 85 | 64 |