YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.65 | e | 67.73 | 57.90 | 44.60 | 34.81 | 56.14 | g | ||||
1896 | 39.16 | 41.14 | 48.42 | 48.73 | 59.10 | 71.70 | 75.81 | 76.52 | 70.53 | 58.77 | 45.83 | 39.74 | 56.29 | |||||||||||||
1897 | 40.45 | 39.39 | 41.26 | 51.57 | 61.23 | 66.57 | 76.23 | 76.45 | 71.03 | 54.13 | 44.00 | 33.61 | 54.66 | |||||||||||||
1898 | 36.48 | 43.79 | 43.19 | 56.77 | 58.87 | 69.27 | 80.39 | 78.35 | 69.23 | 54.35 | 42.10 | 36.97 | 55.81 | |||||||||||||
1899 | 37.42 | 39.00 | 45.48 | 53.67 | 56.06 | 70.27 | 78.23 | 74.03 | 71.73 | 55.71 | 46.97 | 38.84 | 55.62 | |||||||||||||
1900 | 41.71 | 41.75 | 51.29 | 50.93 | 62.03 | 69.97 | 77.48 | 71.29 | 64.23 | 57.32 | 49.00 | 38.90 | 56.33 | |||||||||||||
1901 | 40.10 | 44.39 | 45.71 | 50.07 | 59.90 | 66.47 | 79.61 | 76.55 | 66.40 | 58.10 | 48.73 | 36.10 | 56.01 | |||||||||||||
1902 | 37.97 | 41.61 | 43.81 | 53.60 | 60.03 | 69.50 | 74.23 | 76.77 | 69.43 | 58.26 | 45.37 | 39.48 | 55.84 | |||||||||||||
1903 | 38.39 | 36.32 | 45.58 | 51.60 | 59.81 | 69.37 | 76.16 | 78.16 | 68.47 | 54.55 | 45.87 | 38.13 | 55.20 | |||||||||||||
1904 | 32.55 | 43.14 | 48.68 | 51.13 | 61.94 | 70.43 | 74.03 | 76.16 | 67.23 | 56.03 | 44.83 | 39.55 | 55.48 | |||||||||||||
1905 | 43.29 | 47.57 | 49.61 | 52.10 | 55.74 | 67.17 | 74.29 | 77.03 | 70.77 | 55.97 | 47.90 | 37.90 | 56.61 | |||||||||||||
1906 | 38.23 | 46.96 | 47.81 | 51.70 | 58.00 | 67.37 | 78.16 | 73.61 | 66.10 | 55.71 | 44.37 | 43.19 | 55.93 | |||||||||||||
1907 | 40.94 | 46.50 | 46.23 | 53.60 | 57.45 | 64.63 | 76.26 | 75.55 | 68.33 | 58.68 | 47.20 | 38.19 | 56.13 | |||||||||||||
1908 | 39.87 | 42.31 | 46.87 | 52.50 | 56.35 | 65.03 | 75.87 | 76.16 | 66.80 | 51.52 | 48.00 | 41.87 | 55.26 | |||||||||||||
1909 | 43.32 | 40.39 | 44.13 | 51.73 | 57.68 | 68.97 | 75.48 | 75.84 | 68.03 | 54.61 | 43.77 | 37.03 | 55.08 | |||||||||||||
1910 | 38.35 | 39.64 | 51.10 | 54.63 | 63.23 | 69.33 | 75.77 | 77.32 | 71.80 | 57.32 | 47.03 | 41.19 | 57.23 | |||||||||||||
1911 | 43.58 | 42.00 | 49.94 | 52.57 | 57.77 | 68.80 | 74.19 | 73.97 | 70.63 | 55.03 | 42.90 | 32.77 | 55.35 | |||||||||||||
1912 | 37.23 | 40.34 | 47.68 | 50.20 | 59.16 | 71.03 | 73.13 | 73.55 | 63.63 | 55.06 | 44.97 | 36.29 | 54.36 | |||||||||||||
1913 | 34.03 | 41.57 | 42.81 | 53.17 | 58.06 | 67.20 | 73.13 | 74.48 | 67.83 | 53.90 | 50.90 | 39.61 | 54.73 | |||||||||||||
1914 | 43.03 | 42.11 | 50.32 | 54.30 | 60.52 | 70.70 | 77.19 | 76.74 | 71.43 | 58.84 | 51.43 | 41.29 | 58.16 | |||||||||||||
1915 | 39.03 | 43.32 | 45.74 | 53.43 | 56.68 | 67.80 | 74.90 | 75.71 | 66.10 | 57.29 | 44.37 | 39.68 | 55.34 | |||||||||||||
1916 | 41.84 | 46.41 | 50.16 | 53.77 | 58.58 | 66.73 | 75.42 | 73.42 | 66.90 | 50.87 | 37.33 | 32.58 | 54.50 | |||||||||||||
1917 | 37.68 | 41.14 | 40.32 | 48.73 | 54.23 | 65.43 | 77.10 | 72.39 | 69.03 | 53.74 | 42.30 | 36.29 | 53.20 | |||||||||||||
1918 | 35.68 | 41.14 | 49.06 | 51.70 | 56.48 | 72.57 | 74.87 | 71.39 | 67.00 | 56.45 | 43.53 | 37.19 | 54.76 | |||||||||||||
1919 | 35.19 | 38.68 | 43.68 | 52.93 | 61.65 | 67.53 | 76.45 | 75.87 | 69.00 | 52.68 | 42.67 | 39.58 | 54.66 | |||||||||||||
1920 | 41.52 | 47.00 | 44.71 | 49.67 | 59.35 | 68.47 | 75.19 | 73.00 | 64.90 | 51.55 | 42.63 | 34.26 | 54.35 | |||||||||||||
1921 | 37.45 | 41.96 | 50.13 | 49.67 | 57.87 | 68.20 | 77.13 | 75.10 | 67.40 | 57.55 | 43.37 | 43.94 | 55.81 | |||||||||||||
1922 | 35.45 | 41.11 | 43.61 | 48.60 | 59.03 | 69.17 | 77.23 | 76.35 | 70.80 | 55.23 | 39.23 | 42.68 | 54.87 | |||||||||||||
1923 | 40.71 | 42.11 | 45.06 | 52.47 | 61.23 | 63.27 | 76.71 | 75.45 | 66.10 | 50.81 | 47.23 | 42.26 | 55.28 | |||||||||||||
1924 | 35.06 | 42.72 | 43.16 | 50.57 | 62.45 | 70.07 | 77.48 | 75.52 | 70.50 | 54.13 | 45.43 | 39.48 | 55.55 | |||||||||||||
1925 | 36.10 | 44.89 | 48.65 | 54.90 | 65.77 | 72.00 | 79.48 | 74.39 | 65.33 | 55.65 | 42.77 | 39.71 | 56.64 | |||||||||||||
1926 | 34.81 | 42.68 | 50.94 | 56.83 | 60.35 | 71.23 | 76.26 | 75.23 | 69.77 | 57.87 | 45.50 | 40.42 | 56.82 | |||||||||||||
1927 | 41.74 | 47.07 | 45.29 | 52.40 | 59.52 | 68.37 | 77.45 | 75.42 | 69.47 | 55.10 | 48.30 | 38.84 | 56.58 | |||||||||||||
1928 | 37.19 | 41.17 | 49.58 | 52.07 | 65.16 | 70.07 | 78.23 | 75.39 | 70.53 | 57.97 | 46.57 | 38.00 | 56.83 | |||||||||||||
1929 | 37.42 | 40.11 | 46.06 | 51.60 | 62.23 | 69.43 | 80.16 | 77.13 | 70.70 | 59.77 | 41.73 | 39.97 | 56.36 | |||||||||||||
1930 | 41.65 | 44.89 | 47.26 | 57.73 | 57.35 | 71.30 | 79.06 | 76.74 | 67.83 | 54.13 | 46.80 | 37.48 | 56.85 | |||||||||||||
1931 | 37.90 | 47.86 | 48.00 | 58.67 | 64.81 | 72.63 | 82.77 | 77.61 | 72.93 | 57.61 | 45.93 | 37.55 | 58.69 | |||||||||||||
1932 | 33.77 | 45.48 | 47.74 | 53.57 | 61.58 | 68.60 | 79.48 | 79.23 | 72.37 | 57.55 | 45.67 | 38.32 | 56.95 | |||||||||||||
1933 | 36.10 | 35.71 | 46.77 | 50.27 | 57.52 | 72.57 | 82.45 | 79.45 | 73.77 | 62.87 | 46.03 | 40.29 | 56.98 | |||||||||||||
1934 | 39.84 | 47.11 | 54.32 | 59.57 | 67.58 | 68.57 | 81.32 | 78.94 | 70.63 | 59.48 | 47.20 | 43.52 | 59.84 | |||||||||||||
1935 | 42.16 | 46.21 | 45.29 | 56.03 | 60.16 | 72.83 | 78.42 | 76.84 | 71.20 | 57.16 | 43.37 | 41.39 | 57.59 | |||||||||||||
1936 | 38.55 | 44.48 | 50.29 | 57.53 | 65.23 | 75.00 | 80.23 | 79.03 | 70.10 | 59.19 | 48.10 | 40.65 | 59.03 | |||||||||||||
1937 | 31.87 | 41.39 | 46.87 | 52.13 | 62.26 | 69.70 | 78.55 | 79.65 | 73.93 | 58.65 | 46.73 | 44.10 | 57.15 | |||||||||||||
1938 | 41.16 | 44.93 | 46.84 | 53.63 | 61.03 | 70.17 | 76.81 | 76.77 | 72.43 | 56.13 | 40.10 | 42.81 | 56.90 | |||||||||||||
1939 | 40.32 | 36.61 | 47.52 | 55.80 | 62.77 | 69.93 | 78.97 | 77.87 | 70.73 | 54.58 | 50.77 | 42.84 | 57.39 | |||||||||||||
1940 | 42.52 | 43.97 | 50.45 | 55.97 | 65.97 | 73.97 | 76.87 | 78.06 | 72.50 | 59.84 | 45.20 | 45.87 | 59.26 | |||||||||||||
1941 | 44.10 | 48.36 | 47.81 | 50.27 | 62.00 | 67.17 | 76.16 | 74.00 | 65.83 | 54.87 | 46.80 | 42.58 | 56.66 | |||||||||||||
1942 | 40.97 | 39.18 | 43.97 | 52.60 | 58.77 | 68.13 | 78.90 | 76.32 | 69.87 | 58.35 | 48.03 | 42.03 | 56.43 | |||||||||||||
1943 | 41.26 | 45.00 | 50.10 | 56.07 | 63.65 | 69.93 | 78.55 | 77.35 | 70.90 | 58.61 | 45.50 | 42.39 | 58.28 | |||||||||||||
1944 | 38.32 | 41.72 | 44.39 | 51.37 | 61.00 | 65.27 | 75.39 | 77.16 | 70.87 | 59.87 | 45.77 | 40.55 | 55.97 | |||||||||||||
1945 | 39.74 | 43.32 | 44.74 | 50.80 | 60.94 | 66.50 | 77.94 | 77.81 | 71.00 | 61.35 | 43.17 | 37.84 | 56.26 | |||||||||||||
1946 | 39.55 | 38.68 | 46.94 | 58.40 | 61.94 | 71.37 | 77.77 | 77.71 | 71.80 | 54.26 | 42.77 | 42.42 | 56.97 | |||||||||||||
1947 | 36.97 | 45.00 | 49.55 | 54.60 | 64.97 | 70.00 | 79.45 | 76.06 | 73.37 | 59.65 | 44.10 | 38.71 | 57.70 | |||||||||||||
1948 | 38.19 | 41.41 | 44.68 | 54.63 | 61.16 | 69.63 | 77.58 | 78.35 | 71.97 | 61.52 | 41.63 | 40.19 | 56.75 | |||||||||||||
1949 | 35.84 | 39.50 | 46.71 | 57.07 | 62.10 | 72.07 | 79.00 | 73.61 | 74.40 | 56.10 | 49.97 | 39.74 | 57.17 | |||||||||||||
1950 | 38.39 | 45.96 | 48.71 | 57.63 | 60.52 | 69.10 | 78.32 | 74.84 | 67.93 | 61.97 | 49.57 | 43.32 | 58.02 | |||||||||||||
1951 | 39.45 | 44.61 | 48.19 | 54.57 | 62.61 | 68.10 | 79.29 | 76.26 | 69.50 | 58.52 | 47.33 | 41.26 | 57.47 | |||||||||||||
1952 | 39.74 | 41.83 | 44.06 | 55.23 | 65.39 | 69.97 | 76.48 | 79.00 | 73.10 | 61.26 | 46.00 | 40.87 | 57.74 | |||||||||||||
1953 | 42.19 | 41.07 | 49.26 | 54.43 | 57.58 | 70.93 | 80.03 | 77.06 | 69.10 | 58.52 | 49.17 | 38.00 | 57.28 | |||||||||||||
1954 | 41.13 | 48.04 | 47.58 | 58.73 | 64.84 | 70.37 | 79.48 | 76.35 | 73.07 | 59.84 | 50.00 | 41.13 | 59.21 | |||||||||||||
1955 | 38.97 | 38.21 | 48.16 | 52.40 | 62.19 | 69.13 | 74.48 | 76.19 | 70.20 | 62.26 | 46.67 | 43.77 | 56.89 | |||||||||||||
1956 | 45.16 | 40.00 | 47.65 | 53.97 | 64.97 | 74.90 | 78.35 | 74.48 | 72.53 | 57.97 | 44.30 | 40.28 | b | 57.88 | ||||||||||||
1957 | 45.90 | 50.75 | 50.39 | 53.90 | 60.84 | 73.83 | 80.13 | 77.29 | 69.73 | 59.39 | 44.47 | 42.58 | 59.10 | |||||||||||||
1958 | 40.29 | 47.07 | 47.55 | 54.40 | 68.29 | 74.20 | 79.81 | 80.26 | 70.75 | b | 65.32 | c | 49.41 | a | 44.14 | b | 60.12 | |||||||||
1959 | 43.32 | c | 43.64 | c | 49.74 | 60.90 | 62.74 | 76.37 | 82.76 | b | 78.06 | 71.21 | a | 60.27 | a | 49.63 | 43.87 | a | 60.21 | |||||||
1960 | 38.48 | 40.00 | 51.58 | 56.86 | b | 63.00 | 76.11 | b | 80.48 | 78.93 | a | 73.07 | 59.80 | a | 48.33 | 40.23 | 58.91 | |||||||||
1961 | 43.80 | a | 45.32 | 49.23 | 56.83 | 62.74 | 76.50 | b | 81.42 | 77.23 | 69.40 | 57.94 | 46.34 | a | 41.77 | a | 59.04 | |||||||||
1962 | 40.07 | a | 45.57 | 44.10 | 58.63 | 61.03 | 69.67 | 78.97 | 79.32 | 74.24 | a | 60.13 | 50.37 | 44.42 | 58.88 | |||||||||||
1963 | 37.45 | 47.86 | 48.10 | 52.83 | 65.47 | a | 68.10 | 80.90 | 76.65 | 74.27 | 62.90 | 50.93 | 40.06 | 58.79 | ||||||||||||
1964 | 36.19 | 37.86 | 45.81 | 54.03 | 62.19 | 70.03 | 80.27 | a | 76.68 | 69.97 | 63.35 | 44.87 | 42.55 | 56.98 | ||||||||||||
1965 | 43.00 | 41.71 | 46.70 | a | 54.13 | 60.10 | 66.20 | 78.94 | 77.81 | 68.73 | 60.63 | a | 52.10 | 43.68 | 57.81 | |||||||||||
1966 | 38.58 | 40.25 | 48.97 | 56.60 | 67.16 | 73.17 | 80.65 | 79.87 | 73.40 | 58.94 | 49.63 | 41.90 | 59.09 | |||||||||||||
1967 | 39.13 | 44.18 | 49.71 | 50.60 | 61.39 | 69.90 | 80.00 | 79.55 | 73.40 | 61.35 | 52.57 | 38.65 | 58.37 | |||||||||||||
1968 | 42.39 | 49.76 | 50.29 | 54.29 | i | 63.93 | c | 72.10 | a | 77.62 | b | 75.93 | q | ----- | z | ----- | z | ----- | z | ----- | z | 59.35 | f | |||
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 | 70.06 | l | 62.26 | 46.67 | 41.23 | 50.05 | i | |||
1973 | 40.87 | 47.50 | 47.26 | 55.33 | 68.14 | c | 73.50 | 80.26 | 79.93 | a | 70.07 | 59.65 | 47.90 | 41.58 | 59.33 | |||||||||||
1974 | 41.94 | 40.89 | 51.45 | 55.32 | b | 64.81 | 76.17 | 79.16 | 76.48 | b | 73.97 | 64.00 | 48.96 | b | 39.55 | 59.39 | ||||||||||
1975 | 40.87 | 43.52 | a | 48.03 | 51.03 | 61.81 | 71.37 | 81.00 | 78.66 | b | 73.62 | a | 59.10 | 47.66 | a | 43.26 | 58.33 | |||||||||
1976 | 42.29 | 49.31 | 49.00 | 55.57 | 66.55 | 73.60 | 81.23 | 78.74 | 72.57 | 60.87 | 50.53 | 42.84 | 60.26 | |||||||||||||
1977 | 43.71 | 46.64 | 47.71 | 58.27 | 62.29 | 77.63 | 83.06 | 81.94 | 75.00 | 66.19 | 51.70 | 48.32 | 61.87 | |||||||||||||
1978 | 46.16 | 48.43 | 54.74 | 56.13 | 64.97 | 76.80 | 81.45 | 79.07 | a | 74.40 | 66.50 | a | 51.80 | 41.77 | 61.85 | |||||||||||
1979 | 41.23 | 44.79 | 49.90 | 56.47 | 65.71 | 75.17 | 80.74 | 76.61 | 77.53 | 63.94 | 47.67 | 44.65 | 60.37 | |||||||||||||
1980 | 48.39 | 50.62 | 50.26 | 56.90 | 63.13 | 75.20 | 83.10 | 80.68 | 74.57 | 63.19 | 51.20 | 48.97 | 62.18 | |||||||||||||
1981 | 49.06 | 48.04 | 51.58 | 62.50 | 68.07 | b | 79.50 | 83.13 | 82.94 | 75.79 | a | 60.94 | 52.23 | 46.39 | 63.35 | |||||||||||
1982 | 43.52 | 48.36 | 50.84 | 58.80 | 65.19 | 72.53 | 80.52 | 81.68 | 74.67 | ----- | z | 52.00 | t | 44.82 | c | 62.09 | b | |||||||||
1983 | 44.50 | c | 49.04 | 52.32 | 55.07 | a | 66.61 | 73.93 | 82.97 | 78.52 | 77.93 | 64.71 | 52.00 | 46.42 | 62.00 | |||||||||||
1984 | 43.79 | c | 45.25 | a | 53.38 | b | 57.57 | 69.00 | h | 75.08 | f | 79.16 | 79.26 | 75.70 | 58.48 | 48.83 | 44.16 | 58.56 | b | |||||||
1985 | 43.77 | 44.14 | ----- | z | 61.70 | 69.94 | 76.90 | 81.77 | 80.97 | 69.60 | 63.29 | 49.57 | 43.35 | 62.27 | a | |||||||||||
1986 | 48.10 | 49.68 | 56.32 | 61.00 | 68.71 | 78.30 | 78.74 | 82.77 | 71.13 | 61.90 | 52.83 | 46.00 | 62.96 | |||||||||||||
1987 | 43.32 | 48.86 | 49.71 | 63.33 | 69.68 | 77.80 | 79.42 | 79.13 | 73.50 | 68.06 | 51.67 | 42.26 | 62.23 | |||||||||||||
1988 | 44.35 | 49.55 | 52.13 | 60.00 | 67.39 | 78.43 | 83.16 | 81.81 | 73.80 | 69.03 | 52.20 | 44.26 | 63.01 | |||||||||||||
1989 | 42.94 | 49.32 | 56.65 | 65.77 | 69.52 | 77.13 | 83.26 | 81.00 | 75.80 | 64.00 | a | 52.77 | 43.71 | 63.49 | ||||||||||||
1990 | 43.42 | 45.07 | 55.74 | 63.37 | 68.26 | 79.30 | 82.13 | 78.52 | 75.33 | 64.84 | 52.63 | 41.94 | 62.55 | |||||||||||||
1991 | 45.00 | 53.04 | 48.68 | 58.03 | 64.87 | h | 74.23 | 82.03 | 83.10 | 76.43 | 67.23 | 51.70 | 47.81 | 62.48 | a | |||||||||||
1992 | 45.03 | 51.50 | a | 53.35 | 63.53 | 70.74 | 76.03 | 80.84 | 80.55 | 76.57 | 66.29 | 48.83 | 43.77 | 63.09 | ||||||||||||
1993 | 49.03 | b | 50.18 | 54.03 | 60.97 | 70.58 | 76.60 | 81.16 | 80.39 | 75.03 | 64.84 | 49.90 | 44.00 | 63.06 | ||||||||||||
1994 | 43.94 | 46.00 | 54.97 | 61.67 | 67.87 | 80.17 | 83.19 | 84.90 | 76.42 | f | 62.08 | f | 47.33 | 46.85 | d | 61.69 | b | |||||||||
1995 | 45.54 | c | ----- | z | ----- | z | 56.24 | e | 64.00 | i | 73.67 | c | 81.68 | ----- | z | ----- | z | 64.16 | 56.47 | 46.00 | 60.54 | e | ||||
1996 | 44.87 | 53.14 | 52.52 | 61.83 | 71.06 | 79.07 | 84.58 | 83.90 | ----- | z | ----- | z | 52.67 | 45.26 | 62.89 | b | ||||||||||
1997 | 46.84 | 47.36 | 56.26 | 58.83 | 74.19 | 75.90 | 81.26 | 82.77 | 79.07 | 62.45 | 53.47 | 42.94 | 63.44 | |||||||||||||
1998 | 47.00 | 46.50 | 50.90 | 55.33 | 65.90 | 73.70 | ----- | z | 84.39 | 76.63 | 62.97 | ----- | z | ----- | z | 62.59 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.68 | 44.21 | 48.45 | 55.08 | 62.65 | 71.44 | 78.80 | 77.54 | 71.10 | 59.07 | 47.28 | 41.17 | 57.83 | |||||||||||||
S.D. | 3.67 | 3.85 | 3.40 | 3.77 | 4.04 | 3.82 | 2.65 | 2.79 | 3.24 | 4.00 | 3.55 | 3.30 | 2.54 | |||||||||||||
SKEW | 0.04 | 0.09 | 0.25 | 0.57 | 0.39 | 0.35 | -0.08 | 0.37 | 0.02 | 0.22 | -0.10 | -0.23 | 0.73 | |||||||||||||
MAX | 49.06 | 53.14 | 56.65 | 65.77 | 74.19 | 80.17 | 84.58 | 84.90 | 79.07 | 69.03 | 56.47 | 48.97 | 63.49 | |||||||||||||
MIN | 31.87 | 35.71 | 40.32 | 48.60 | 54.23 | 63.27 | 73.13 | 71.29 | 63.63 | 50.81 | 37.33 | 32.58 | 53.20 | |||||||||||||
YRS | 99 | 98 | 97 | 98 | 96 | 98 | 98 | 98 | 96 | 97 | 98 | 99 | 90 |