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 | 33.40 | a | 33.40 | k |
1893 | 35.29 | 39.04 | 38.47 | a | 48.17 | 52.90 | 66.87 | 65.68 | 64.16 | 60.10 | 49.70 | a | 40.53 | 37.97 | 49.91 | |||||||||||
1894 | 32.77 | 32.62 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.69 | j | |
1895 | ----- | z | ----- | z | ----- | z | ----- | z | 57.74 | 64.20 | 66.77 | 64.58 | 62.50 | 52.50 | c | 39.53 | 34.77 | 55.33 | d | |||||||
1896 | 38.23 | a | 37.34 | 45.06 | 46.93 | 57.06 | 68.79 | b | 67.22 | d | 64.97 | 62.17 | 50.48 | 44.77 | 39.29 | 51.86 | ||||||||||
1897 | 33.81 | 36.54 | 39.35 | 50.76 | a | 58.10 | 64.79 | a | 65.53 | a | 64.10 | 61.28 | a | 50.71 | 44.77 | 34.81 | 50.38 | |||||||||
1898 | 32.19 | 40.32 | 39.61 | 52.87 | 52.68 | 61.77 | 65.06 | 64.39 | 60.00 | 52.74 | 41.07 | 33.45 | 49.68 | |||||||||||||
1899 | 33.90 | 35.75 | 40.13 | 47.23 | 49.65 | 59.60 | 64.13 | 63.48 | 61.20 | 47.77 | 41.03 | 35.55 | 48.29 | |||||||||||||
1900 | 36.26 | 35.93 | 43.58 | 40.10 | 55.71 | 64.31 | a | 65.71 | 63.61 | 57.73 | 50.32 | 42.10 | 34.32 | 49.14 | ||||||||||||
1901 | 35.70 | a | 35.21 | 37.42 | 42.40 | 51.71 | 59.57 | 65.03 | 63.62 | b | 60.57 | 50.97 | a | 42.53 | 33.63 | a | 48.20 | |||||||||
1902 | 33.33 | a | 38.10 | g | 36.68 | 49.50 | 53.71 | 64.10 | 63.68 | 63.40 | a | 60.68 | b | 53.39 | m | 40.87 | 35.40 | a | 50.13 | b | ||||||
1903 | 33.68 | 31.57 | 40.77 | 47.62 | n | 52.45 | 61.57 | 65.39 | 64.35 | e | 59.62 | a | ----- | z | ----- | z | ----- | z | 51.17 | d | ||||||
1904 | 32.67 | g | 38.96 | e | 44.42 | 48.41 | c | 53.39 | 60.77 | 64.29 | 61.03 | 57.40 | 48.42 | 40.13 | 35.71 | 50.27 | a | |||||||||
1905 | 37.26 | 38.96 | 40.19 | 42.67 | 51.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.20 | g | |||||
1906 | 31.58 | 37.32 | 41.58 | 45.60 | 51.84 | 60.40 | 62.23 | 59.77 | 57.73 | 48.90 | 40.20 | 38.10 | 47.94 | |||||||||||||
1907 | 37.03 | 39.75 | 41.32 | 46.83 | 48.71 | 57.13 | 63.19 | 61.16 | 57.70 | 49.29 | 38.73 | d | 35.65 | 48.04 | ||||||||||||
1908 | 35.29 | 35.83 | 41.64 | i | 46.35 | d | 49.48 | 59.87 | 63.16 | 60.94 | 58.13 | 46.39 | 40.53 | 37.16 | 48.47 | a | ||||||||||
1909 | 39.90 | 35.14 | 36.52 | 44.73 | 50.29 | 59.67 | 63.68 | 61.10 | 56.87 | 49.52 | 42.00 | 33.16 | 47.71 | |||||||||||||
1910 | 36.39 | 34.11 | 45.23 | 46.83 | 55.81 | 62.67 | 64.52 | 63.58 | 60.17 | 51.00 | 41.67 | 37.20 | a | 49.93 | ||||||||||||
1911 | 39.61 | 36.39 | 45.10 | 45.38 | a | 53.03 | 59.53 | 62.52 | 63.29 | 59.80 | 48.87 | 38.30 | 28.35 | 48.35 | ||||||||||||
1912 | 33.87 | 33.72 | 39.87 | 40.43 | 51.45 | 60.21 | a | 61.65 | 60.42 | ----- | z | 49.46 | c | 39.00 | a | 30.68 | 45.52 | a | ||||||||
1913 | 30.53 | a | 34.89 | 36.58 | 42.30 | 50.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.16 | 37.84 | f | |||||
1914 | 37.32 | 36.64 | 40.77 | 48.17 | 52.70 | a | 62.10 | 61.87 | 62.61 | 58.37 | 48.77 | 43.63 | 32.48 | 48.79 | ||||||||||||
1915 | 32.68 | 35.54 | 37.52 | 44.77 | 50.19 | 61.93 | c | 63.55 | 62.68 | 58.54 | b | 51.65 | 42.17 | 34.17 | a | 47.95 | ||||||||||
1916 | 38.52 | j | 40.62 | h | 44.91 | h | 43.91 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | 35.63 | a | 33.75 | ----- | z | 44.54 | b | 48.16 | 63.24 | a | 63.90 | 62.65 | 59.23 | 51.83 | a | 43.60 | 39.85 | e | 49.67 | a | ||||||
1918 | 33.55 | 38.96 | 42.10 | 47.17 | 52.45 | 65.10 | 64.30 | a | 62.74 | 61.03 | 53.10 | 37.22 | g | 33.32 | c | 50.35 | a | |||||||||
1919 | 32.19 | 32.14 | 38.03 | 48.13 | 54.52 | 61.27 | 62.29 | 63.35 | 57.00 | 49.32 | 40.80 | 38.97 | 48.17 | |||||||||||||
1920 | 36.32 | 41.67 | h | 40.35 | 43.23 | 53.84 | 61.17 | 66.13 | 61.94 | 58.23 | 48.10 | 40.53 | 34.00 | 49.44 | a | |||||||||||
1921 | 37.29 | 36.75 | 43.10 | a | 44.77 | 53.48 | 63.43 | 64.13 | 61.55 | 60.50 | 51.97 | 42.57 | 39.45 | 49.92 | ||||||||||||
1922 | 35.09 | i | 39.29 | 38.00 | 43.00 | 54.07 | a | 63.10 | 63.32 | 63.23 | 58.60 | 49.97 | 37.93 | 40.42 | 50.08 | a | ||||||||||
1923 | 39.10 | 38.14 | 39.58 | 45.53 | 55.83 | a | 60.50 | 63.47 | a | 61.46 | c | 56.77 | 47.94 | 41.23 | 33.65 | 48.60 | ||||||||||
1924 | 34.26 | 37.79 | 36.90 | 43.60 | 54.55 | 68.17 | 65.35 | 64.57 | c | 60.90 | 50.93 | a | 43.90 | 34.81 | 49.64 | |||||||||||
1925 | 32.23 | 43.50 | 44.77 | a | 47.53 | 55.97 | 60.63 | 64.23 | 60.42 | 58.83 | 50.16 | 40.20 | 33.77 | a | 49.35 | |||||||||||
1926 | 30.97 | 37.41 | a | 40.45 | 44.17 | 52.48 | 62.63 | 64.13 | a | 62.92 | g | 60.62 | a | 51.50 | a | 42.83 | 37.10 | 47.66 | a | |||||||
1927 | 38.12 | e | 42.74 | a | 41.26 | 49.00 | e | 58.64 | c | 62.30 | 65.26 | 62.61 | 57.80 | 50.39 | 47.11 | b | 36.29 | 50.96 | ||||||||
1928 | 37.97 | 36.17 | 42.77 | 45.24 | a | 54.26 | 63.40 | 64.81 | 60.47 | a | 54.17 | 49.31 | e | 36.97 | 31.71 | 48.10 | ||||||||||
1929 | 33.06 | 35.07 | 38.90 | 46.33 | 58.03 | 66.20 | 64.35 | 62.53 | a | 60.27 | 49.45 | 36.90 | 37.23 | 49.03 | ||||||||||||
1930 | 33.52 | 38.36 | 39.26 | 49.66 | a | 48.43 | a | 61.77 | 62.03 | a | 61.39 | 56.63 | 48.23 | 39.07 | 32.48 | 47.57 | ||||||||||
1931 | 31.00 | 35.71 | 40.13 | h | 46.73 | 53.52 | 61.63 | 65.13 | 60.81 | 59.03 | 50.94 | 40.00 | e | 33.58 | 48.92 | a | ||||||||||
1932 | 30.23 | 37.96 | f | 39.13 | 45.67 | 52.23 | 60.43 | 63.26 | 62.81 | 57.73 | 47.71 | 40.73 | 32.84 | 48.43 | a | |||||||||||
1933 | 32.87 | 34.35 | e | 41.94 | 43.93 | 49.61 | 62.40 | 64.81 | 63.00 | 60.57 | 51.00 | 40.90 | 36.13 | 48.46 | ||||||||||||
1934 | 32.26 | 37.58 | i | 42.48 | 46.27 | 55.29 | 58.30 | 63.19 | 59.39 | 58.07 | 51.07 | a | 40.97 | 37.35 | 49.51 | a | ||||||||||
1935 | 37.00 | 36.14 | 40.48 | 46.43 | 47.32 | 61.37 | 63.97 | 61.00 | 54.97 | a | 49.23 | 38.80 | 33.52 | 47.52 | ||||||||||||
1936 | 33.06 | 35.03 | 40.61 | 48.57 | 55.16 | 63.23 | 64.39 | 62.87 | 56.03 | 48.55 | 39.80 | 34.00 | 48.44 | |||||||||||||
1937 | 28.13 | 37.21 | 39.48 | 46.20 | 55.29 | 61.67 | 65.52 | 63.65 | 58.97 | 51.16 | 41.50 | 37.87 | 48.89 | |||||||||||||
1938 | 35.39 | 37.61 | 39.57 | a | 46.10 | 53.87 | 61.23 | 61.81 | 61.87 | 56.27 | 50.65 | 37.80 | 37.19 | 48.28 | ||||||||||||
1939 | 32.87 | 28.75 | 41.32 | 47.77 | 54.58 | 62.53 | 61.55 | 59.55 | 56.93 | 47.00 | 41.83 | 39.71 | 47.87 | |||||||||||||
1940 | 36.03 | 36.93 | 42.97 | 47.20 | 54.94 | 63.67 | 65.29 | 61.11 | m | 59.77 | 51.16 | 41.00 | 40.48 | 49.04 | a | |||||||||||
1941 | 35.40 | a | 39.92 | c | 41.13 | 42.70 | 53.61 | c | 59.40 | 65.32 | 63.77 | 59.83 | 50.10 | 41.93 | 36.00 | 49.09 | ||||||||||
1942 | 37.19 | 35.64 | 38.52 | 45.43 | 52.34 | b | 62.65 | d | 64.46 | e | 62.62 | e | 54.96 | d | 50.44 | d | 45.20 | e | 37.22 | d | 48.89 | |||||
1943 | 35.19 | e | 37.25 | d | 41.88 | e | 50.00 | d | 55.73 | e | 62.31 | d | 63.37 | d | 61.54 | e | 58.92 | d | 48.42 | e | 39.77 | d | 33.04 | d | 48.95 | |
1944 | 29.88 | e | 32.96 | d | 38.48 | d | 42.19 | d | 51.52 | d | 59.96 | d | 63.73 | e | 63.33 | d | 56.23 | d | 49.92 | e | 36.88 | d | 34.35 | e | 46.62 | |
1945 | 32.52 | d | 35.04 | d | 36.93 | d | 42.96 | e | 54.37 | d | 58.88 | d | 65.07 | d | 62.56 | d | 60.40 | 49.84 | 40.63 | 33.32 | i | 49.02 | a | |||
1946 | 30.47 | a | 32.96 | d | 38.50 | e | 50.10 | 52.52 | 64.57 | i | 64.27 | e | 63.94 | 60.27 | 49.97 | 37.37 | 37.65 | 47.09 | a | |||||||
1947 | 29.65 | 39.50 | 40.97 | 44.97 | 56.13 | 61.57 | 66.46 | e | 62.73 | e | 60.64 | e | 52.48 | d | 38.15 | d | 32.35 | e | 48.80 | |||||||
1948 | 33.54 | e | 34.96 | f | 36.38 | e | 48.73 | d | 55.23 | e | 63.92 | d | 66.65 | e | 63.62 | e | 60.08 | e | 51.50 | e | 37.04 | d | 37.30 | d | 50.36 | a |
1949 | 27.26 | d | 33.25 | d | 40.48 | d | 46.73 | d | 53.08 | g | 62.00 | h | 62.64 | i | 63.09 | h | 60.57 | i | 46.59 | i | 43.76 | e | 34.15 | e | 37.61 | f |
1950 | 35.04 | c | 38.25 | d | 43.27 | e | 50.60 | e | 52.26 | d | 62.08 | d | 63.32 | f | 62.33 | d | 58.32 | e | 56.69 | e | 43.46 | d | 39.96 | e | 49.30 | a |
1951 | 33.38 | e | 33.92 | d | 40.63 | d | 45.24 | e | 52.44 | d | 61.31 | d | 65.46 | e | 63.56 | d | 60.88 | f | 52.81 | e | 40.96 | d | 34.76 | f | 48.97 | b |
1952 | 36.11 | c | 33.92 | c | 32.81 | e | 43.46 | d | 53.81 | d | 62.65 | d | 65.11 | d | 62.96 | e | 60.56 | e | 52.63 | d | 37.48 | e | 32.82 | c | 47.86 | |
1953 | 36.52 | d | 33.46 | d | 39.88 | e | 44.42 | d | 49.15 | e | 61.65 | d | 64.19 | e | 62.46 | e | 58.68 | e | 49.04 | d | 42.80 | e | 31.32 | c | 47.80 | |
1954 | 35.63 | d | 40.04 | c | 40.59 | d | 50.81 | d | 54.90 | 62.04 | b | 65.00 | e | 60.42 | 61.19 | d | 53.35 | e | 43.37 | c | 37.57 | a | 50.41 | |||
1955 | 29.52 | 31.89 | 41.61 | 46.47 | 51.39 | 62.20 | 63.81 | 61.77 | 58.57 | 52.03 | 40.30 | 38.68 | 48.19 | |||||||||||||
1956 | 37.84 | 31.97 | 42.03 | 44.57 | 55.00 | 65.83 | 62.55 | 61.35 | 61.80 | 50.42 | 37.63 | 34.85 | d | 48.82 | ||||||||||||
1957 | 38.71 | c | 43.12 | d | 42.08 | e | 45.61 | b | 49.93 | c | 63.11 | b | 65.36 | c | 62.89 | d | 57.25 | f | 48.70 | d | 36.16 | e | 36.54 | g | 49.57 | b |
1958 | 33.29 | c | 37.95 | f | 36.38 | e | 44.42 | f | 57.52 | f | 64.92 | f | 64.60 | f | 63.18 | i | 58.95 | h | 50.52 | d | 40.12 | e | 38.08 | e | 39.68 | g |
1959 | 35.33 | d | 34.33 | d | 39.24 | f | 49.00 | d | 53.48 | f | 65.92 | d | 64.27 | e | 62.19 | e | 60.34 | a | 50.38 | b | 40.62 | f | 35.10 | a | 50.76 | c |
1960 | 29.76 | b | 31.07 | a | 43.11 | d | 48.12 | d | 53.40 | a | 65.13 | 63.71 | 63.52 | 60.70 | 48.77 | a | 42.45 | a | 33.67 | a | 48.62 | |||||
1961 | 36.04 | e | 36.48 | e | 41.30 | d | 48.27 | d | 54.46 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.31 | g |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | 49.77 | d | 53.16 | f | 61.48 | c | 64.83 | a | 63.45 | 60.39 | b | 49.48 | 42.04 | b | 33.19 | 53.08 | d | |||
1983 | 34.52 | b | 35.96 | b | 37.79 | c | 40.79 | f | 53.00 | b | 60.41 | a | 65.55 | 63.68 | 61.46 | b | 48.58 | e | 41.30 | c | 39.89 | c | 49.28 | a | ||
1984 | 34.27 | a | 34.86 | a | 41.80 | a | 45.07 | 58.73 | a | 63.26 | c | 62.00 | v | 60.57 | a | 59.43 | 48.71 | 40.53 | 36.90 | 47.65 | a | |||||
1985 | 33.10 | a | 28.96 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.03 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.26 | 36.06 | 40.32 | 46.25 | 53.30 | 62.27 | 64.30 | 62.48 | 59.07 | 50.20 | 40.78 | 35.50 | 48.77 | |||||||||||||
S.D. | 2.82 | 3.04 | 2.49 | 2.63 | 2.59 | 2.25 | 1.30 | 1.35 | 1.87 | 1.75 | 2.29 | 2.69 | 1.03 | |||||||||||||
SKEW | -0.20 | 0.09 | -0.23 | 0.01 | -0.10 | 0.60 | -0.19 | -0.42 | -0.54 | 0.72 | 0.14 | 0.01 | 0.81 | |||||||||||||
MAX | 39.90 | 43.50 | 45.23 | 52.87 | 58.73 | 68.79 | 67.22 | 64.97 | 62.50 | 56.69 | 47.11 | 40.48 | 51.86 | |||||||||||||
MIN | 27.26 | 28.75 | 32.81 | 40.10 | 47.32 | 57.13 | 61.55 | 59.39 | 54.17 | 46.39 | 36.16 | 28.35 | 46.62 | |||||||||||||
YRS | 68 | 64 | 64 | 66 | 66 | 64 | 63 | 63 | 62 | 64 | 64 | 65 | 40 |