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 | 56.90 | a | 56.90 | k |
1893 | 63.71 | 62.00 | 63.97 | a | 74.80 | 80.55 | 93.53 | 84.35 | 82.52 | 82.40 | 75.40 | a | 61.67 | 56.83 | a | 73.48 | ||||||||||
1894 | 52.03 | 51.32 | 59.68 | c | 71.52 | e | 81.71 | 87.00 | 86.13 | 79.16 | 80.50 | 74.74 | ----- | z | 56.42 | 70.93 | a | |||||||||
1895 | 52.71 | 56.07 | 63.90 | 73.20 | 81.19 | 88.63 | 86.81 | 83.94 | 82.20 | 72.52 | d | 57.30 | 53.26 | 70.98 | ||||||||||||
1896 | 58.07 | a | 55.48 | 65.71 | 71.30 | 82.10 | 92.29 | b | 85.26 | d | 84.32 | 81.23 | 68.68 | 65.07 | 59.55 | 72.42 | ||||||||||
1897 | 49.97 | 56.00 | 60.65 | 74.83 | a | 82.00 | 87.70 | 85.23 | 82.26 | 79.24 | a | 70.39 | 68.23 | 55.26 | 70.98 | |||||||||||
1898 | 48.65 | 61.61 | 60.84 | 73.87 | 78.35 | 89.60 | 84.74 | 83.26 | 81.37 | 77.03 | 62.83 | 50.35 | 71.04 | |||||||||||||
1899 | 54.19 | 57.25 | 67.32 | 72.33 | 77.39 | 84.67 | 85.39 | 85.87 | 86.37 | 72.00 | 66.00 | 60.13 | 72.41 | |||||||||||||
1900 | 61.26 | 60.75 | 67.87 | 64.53 | 82.16 | 91.79 | a | 91.29 | 89.13 | 81.20 | 75.35 | 66.70 | 59.71 | 74.31 | ||||||||||||
1901 | 57.50 | c | 55.93 | 64.00 | a | 69.31 | a | 77.68 | 87.97 | a | 89.19 | 85.10 | a | 84.47 | 73.52 | 65.37 | 59.48 | 72.46 | ||||||||
1902 | 57.61 | 62.08 | c | 62.16 | 78.10 | 79.35 | 91.40 | 86.23 | 83.60 | a | 81.46 | b | 78.89 | m | 61.00 | 54.94 | 72.54 | a | ||||||||
1903 | 57.84 | 54.75 | 64.10 | 74.38 | n | 75.94 | 86.00 | 89.90 | 85.35 | e | 81.21 | a | ----- | z | ----- | z | ----- | z | 74.38 | d | ||||||
1904 | 59.38 | g | 69.16 | d | 70.90 | 77.30 | c | 79.19 | 87.27 | 86.74 | 81.55 | 77.73 | 70.16 | 64.31 | a | 54.90 | 74.47 | a | ||||||||
1905 | 57.19 | 52.00 | 58.52 | 63.67 | 75.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.31 | g | |||||
1906 | 52.94 | 55.04 | 62.71 | 69.53 | 77.16 | 87.03 | 83.23 | 78.19 | 80.93 | 73.29 | 62.93 | 56.16 | 69.93 | |||||||||||||
1907 | 54.35 | 61.11 | 67.16 | 71.73 | 73.68 | 83.63 | 83.84 | 79.81 | 79.93 | 71.65 | 58.58 | d | 58.77 | a | 70.35 | |||||||||||
1908 | 56.29 | 56.79 | 65.73 | i | 70.85 | d | 73.65 | 85.20 | 81.65 | 78.80 | a | 78.69 | a | 71.16 | 62.03 | 54.52 | 69.97 | a | ||||||||
1909 | 62.03 | 56.36 | 58.65 | 70.40 | 75.19 | 86.03 | 83.19 | 78.74 | 77.47 | 74.45 | 65.27 | 53.32 | 70.09 | |||||||||||||
1910 | 57.50 | a | 57.64 | 68.65 | 72.30 | 81.37 | a | 86.40 | 86.71 | 83.26 | 81.57 | 72.32 | 64.83 | 59.29 | 72.65 | |||||||||||
1911 | 59.57 | a | 54.93 | 66.00 | 69.66 | a | 78.26 | 84.40 | 80.52 | 84.10 | 79.27 | 69.48 | 58.93 | 48.84 | 69.50 | |||||||||||
1912 | 57.10 | 58.17 | 58.84 | 63.73 | 76.42 | 85.73 | 81.87 | 79.45 | ----- | z | 70.79 | c | 62.80 | 52.23 | 67.92 | a | ||||||||||
1913 | 52.68 | 54.63 | a | 62.19 | 73.93 | b | 80.06 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.39 | 62.65 | f | ||||
1914 | 60.26 | 59.82 | 65.68 | 74.48 | a | 81.80 | a | 86.93 | a | 82.84 | 84.77 | a | 81.70 | 71.74 | 66.00 | 51.32 | 72.28 | |||||||||
1915 | 53.81 | 59.43 | 62.58 | 72.07 | 79.61 | 92.70 | c | 92.56 | d | 87.26 | 84.87 | 79.03 | 67.90 | 59.42 | 74.27 | |||||||||||
1916 | 60.67 | j | 67.57 | h | 72.30 | h | 70.82 | s | ----- | z | ----- | z | 85.20 | f | 77.86 | b | 74.80 | 70.71 | ----- | z | ----- | z | 74.46 | i | ||
1917 | 55.15 | d | 63.04 | a | ----- | z | 73.18 | b | 76.26 | 92.00 | a | 90.45 | 88.42 | 83.70 | 80.61 | 71.77 | 66.96 | e | 76.50 | a | ||||||
1918 | 55.94 | 64.25 | 66.81 | 73.63 | 78.03 | 91.40 | 90.68 | 87.55 | 87.70 | 78.65 | 58.30 | g | 55.00 | c | 75.42 | a | ||||||||||
1919 | 54.87 | 57.82 | 66.23 | 79.30 | 83.61 | 93.33 | 87.23 | a | 91.19 | 82.87 | 72.13 | 61.90 | 60.84 | 74.28 | ||||||||||||
1920 | 55.74 | 60.91 | g | 64.77 | a | 71.47 | 83.32 | 88.43 | 93.48 | 87.94 | 86.97 | 75.45 | 68.07 | 60.35 | 76.00 | a | ||||||||||
1921 | 61.81 | 64.43 | 70.06 | 73.47 | 80.55 | 90.90 | 86.17 | a | 84.94 | 85.17 | 80.39 | 69.20 | 62.55 | 75.80 | ||||||||||||
1922 | 55.59 | i | 62.64 | 66.16 | 71.00 | 83.35 | 91.60 | 89.10 | 90.94 | 87.33 | 78.32 | 63.73 | 63.71 | 77.08 | a | |||||||||||
1923 | 64.06 | 58.00 | 64.32 | 73.30 | 85.39 | 89.90 | 88.03 | a | 83.76 | b | 83.03 | 76.45 | 60.53 | 51.61 | 73.20 | |||||||||||
1924 | 58.94 | 66.45 | 62.84 | 72.70 | 85.68 | 99.60 | 92.94 | 94.21 | c | 90.90 | 84.16 | 74.67 | 58.19 | 78.44 | ||||||||||||
1925 | 62.77 | 70.96 | 76.16 | 82.76 | a | 89.39 | 87.90 | 93.06 | 89.68 | 90.90 | 78.23 | 67.90 | 56.35 | 78.84 | ||||||||||||
1926 | 57.13 | 69.33 | a | 68.16 | 71.00 | 83.58 | 95.90 | 93.68 | 94.17 | g | 87.37 | 80.84 | 73.52 | a | 57.77 | 76.21 | a | |||||||||
1927 | 70.65 | e | 72.15 | a | 71.19 | 84.16 | e | 91.14 | c | 95.13 | 96.55 | 93.55 | 88.07 | 83.10 | 76.75 | b | 58.26 | 81.73 | ||||||||
1928 | 67.26 | 62.10 | 69.87 | 71.27 | 78.81 | 90.43 | 86.06 | 81.13 | 82.87 | 74.42 | e | 59.77 | 53.39 | 73.11 | ||||||||||||
1929 | 57.26 | 59.18 | 65.71 | 72.90 | 84.53 | a | 94.30 | 89.19 | 87.97 | 86.07 | 77.26 | 66.13 | 63.94 | 75.37 | ||||||||||||
1930 | 54.94 | 67.21 | 63.84 | 77.63 | 79.43 | a | 93.00 | 88.71 | 90.32 | 87.80 | 80.16 | 63.77 | 56.45 | 75.27 | ||||||||||||
1931 | 57.00 | 59.74 | a | 72.30 | h | 76.77 | 86.19 | 93.90 | 94.52 | 89.00 | 86.41 | a | 82.65 | 63.47 | 58.16 | 77.07 | a | |||||||||
1932 | 56.26 | 61.96 | f | 68.03 | a | 76.90 | 83.39 | 91.63 | 89.19 | 89.00 | 87.23 | 76.77 | 71.43 | 55.23 | 76.82 | a | ||||||||||
1933 | 57.20 | a | 61.13 | e | 72.42 | 72.43 | 81.53 | a | 90.30 | 92.47 | a | 90.42 | 87.10 | 78.13 | a | 70.07 | 65.71 | 76.58 | ||||||||
1934 | 60.68 | 68.21 | i | 75.10 | 78.57 | 87.52 | b | 90.03 | 91.71 | 86.14 | b | 87.50 | 82.87 | 67.20 | 61.63 | a | 78.99 | a | ||||||||
1935 | 61.33 | a | 60.50 | b | 66.35 | 75.73 | 76.81 | 91.80 | 90.81 | 83.84 | 82.66 | a | 78.19 | 63.57 | 55.73 | a | 73.94 | |||||||||
1936 | 58.77 | 59.11 | b | 64.65 | 74.80 | 85.42 | 91.54 | b | 91.32 | 89.65 | 83.87 | 77.16 | 64.23 | 59.35 | 74.99 | |||||||||||
1937 | 51.13 | 62.86 | 66.19 | 78.37 | 86.10 | 92.57 | 93.68 | 91.48 | 87.10 | a | 80.32 | 71.30 | 58.87 | 76.66 | ||||||||||||
1938 | 59.96 | c | 62.68 | 68.55 | 77.48 | c | 84.10 | 91.77 | 89.55 | 89.55 | 83.03 | a | 79.10 | 69.87 | 63.39 | 76.58 | ||||||||||
1939 | 60.06 | 57.68 | 72.10 | 80.10 | 88.13 | a | 95.53 | 91.19 | 90.03 | 86.33 | 77.00 | 65.37 | 66.48 | 77.50 | ||||||||||||
1940 | 61.23 | 63.07 | 70.81 | 76.70 | 84.32 | 88.83 | 91.58 | 88.14 | i | 85.60 | 76.32 | 65.30 | 61.84 | 75.05 | a | |||||||||||
1941 | 56.37 | a | 60.56 | c | 64.06 | 69.63 | 78.71 | c | 85.73 | 87.16 | 84.61 | 81.63 | 71.10 | 65.73 | 57.00 | 71.86 | ||||||||||
1942 | 59.42 | 59.07 | 65.06 | 71.93 | 82.10 | b | 90.96 | d | 90.56 | d | 86.12 | e | 83.81 | d | 72.48 | d | 69.62 | d | 59.67 | d | 74.23 | |||||
1943 | 55.85 | e | 63.88 | d | 67.89 | d | 76.92 | d | 84.54 | e | 87.73 | d | 87.00 | d | 85.48 | d | 84.23 | d | 75.00 | e | 67.12 | d | 55.04 | d | 74.22 | |
1944 | 52.15 | e | 53.24 | d | 61.67 | d | 70.58 | d | 79.67 | d | 87.54 | d | 89.12 | e | 88.48 | d | 82.88 | d | 76.26 | d | 60.58 | d | 59.08 | e | 71.77 | |
1945 | 56.41 | d | 61.21 | d | 61.00 | d | 69.38 | d | 81.59 | d | 87.58 | d | 91.44 | d | 88.04 | d | 87.20 | 75.35 | 70.93 | 60.60 | f | 75.47 | a | |||
1946 | 53.68 | 63.88 | d | 66.54 | e | 80.73 | 81.68 | 94.62 | i | 90.41 | d | 88.74 | 84.27 | 75.03 | 64.30 | 64.00 | 73.93 | a | ||||||||
1947 | 51.52 | 67.21 | 68.65 | 73.93 | 82.48 | 88.03 | 91.73 | e | 86.35 | e | 88.23 | d | 80.00 | d | 61.07 | c | 57.15 | e | 74.70 | |||||||
1948 | 59.78 | d | 57.67 | e | 62.00 | d | 78.58 | d | 85.69 | e | 91.85 | d | 91.96 | e | 88.19 | e | 85.52 | e | 74.92 | e | 63.96 | d | 58.89 | d | 74.92 | |
1949 | 45.30 | d | 58.83 | d | 67.07 | d | 75.54 | d | 82.12 | g | 89.50 | h | 87.73 | i | 89.35 | h | 86.05 | i | 73.90 | j | 71.68 | e | 57.81 | e | 62.70 | f |
1950 | 59.00 | c | 65.96 | d | 69.15 | e | 77.75 | f | 79.42 | e | 89.31 | d | 84.58 | g | 88.74 | d | 84.92 | e | 84.08 | e | 73.54 | d | 67.23 | e | 76.13 | b |
1951 | 56.88 | e | 60.17 | e | 65.44 | d | 70.65 | d | 79.70 | d | 89.00 | d | 90.50 | e | 87.56 | d | 89.75 | f | 77.85 | e | 65.54 | d | 58.00 | f | 74.33 | b |
1952 | 59.43 | c | 59.54 | c | 58.12 | e | 69.96 | d | 82.52 | d | 88.46 | b | 91.33 | d | 88.56 | d | 88.20 | e | 82.63 | d | 61.88 | d | 55.61 | c | 73.85 | |
1953 | 64.22 | d | 59.38 | d | 66.04 | e | 70.92 | d | 76.63 | d | 91.15 | d | 89.27 | e | 88.88 | e | 88.00 | e | 76.89 | d | 68.92 | d | 56.89 | c | 74.77 | |
1954 | 59.89 | c | 66.68 | c | 63.93 | d | 78.15 | d | 80.74 | 88.43 | b | 89.46 | e | 83.77 | a | 86.85 | d | 80.56 | d | 70.59 | c | 61.17 | a | 75.85 | ||
1955 | 51.16 | 57.75 | 66.16 | 73.60 | 77.65 | 88.53 | 86.68 | 83.71 | 85.87 | 79.35 | 66.63 | 63.10 | 73.35 | |||||||||||||
1956 | 62.26 | 56.55 | 70.03 | 70.83 | 84.39 | 92.03 | 89.26 | 87.81 | 89.60 | 79.17 | a | 65.57 | 59.44 | d | 75.58 | |||||||||||
1957 | 57.46 | c | 68.96 | d | 65.41 | d | 72.36 | b | 76.71 | c | 90.11 | b | 89.50 | c | 86.33 | d | 85.62 | f | 72.33 | d | 62.71 | f | 62.75 | g | 75.46 | c |
1958 | 56.57 | c | 61.82 | f | 57.54 | e | 70.44 | e | 84.36 | f | 90.62 | f | 89.92 | e | 87.50 | i | 81.86 | h | 72.11 | d | 65.88 | e | 66.12 | e | 68.37 | e |
1959 | 62.48 | d | 60.29 | d | 67.46 | e | 76.00 | d | 80.24 | f | 90.73 | d | 89.07 | d | 83.50 | e | 84.41 | a | 77.28 | b | 63.25 | f | 56.77 | a | 74.80 | b |
1960 | 51.79 | b | 56.57 | a | 70.93 | d | 75.65 | d | 81.43 | a | 93.37 | 88.68 | 89.26 | 87.47 | 75.30 | a | 69.39 | b | 60.46 | c | 75.03 | |||||
1961 | 59.14 | i | 63.24 | g | 69.12 | g | 76.59 | h | 84.65 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.65 | k |
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 | 77.04 | d | 80.56 | f | 89.93 | c | 89.14 | b | 87.17 | a | 84.04 | b | 77.80 | a | 62.04 | c | 53.13 | a | 77.53 | d |
1983 | 59.10 | b | 59.79 | d | 63.23 | e | 66.38 | f | 81.54 | c | 87.23 | 89.48 | b | 87.27 | a | 84.62 | d | 73.81 | e | 64.37 | c | 59.04 | c | 73.59 | a | |
1984 | 58.07 | d | 63.39 | f | 69.28 | f | 73.43 | g | 86.41 | d | 86.04 | f | 84.57 | x | 83.39 | c | 83.15 | d | 68.40 | f | 64.39 | g | 56.22 | d | 73.45 | g |
1985 | 51.56 | f | 58.64 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 57.41 | 60.47 | 65.69 | 73.67 | 81.27 | 89.93 | 88.78 | 86.01 | 84.24 | 76.19 | 65.91 | 58.18 | 74.04 | |||||||||||||
S.D. | 4.36 | 4.57 | 3.98 | 4.00 | 3.77 | 3.12 | 3.39 | 3.77 | 3.34 | 3.88 | 4.15 | 4.12 | 2.56 | |||||||||||||
SKEW | 0.09 | 0.50 | 0.16 | 0.03 | 0.17 | 0.36 | -0.35 | -0.30 | -0.36 | 0.12 | 0.34 | 0.21 | 0.53 | |||||||||||||
MAX | 70.65 | 72.15 | 76.16 | 84.16 | 91.14 | 99.60 | 96.55 | 94.21 | 90.90 | 84.16 | 76.75 | 67.23 | 81.73 | |||||||||||||
MIN | 45.30 | 51.32 | 57.54 | 63.67 | 73.65 | 83.63 | 80.52 | 77.86 | 74.80 | 68.68 | 57.30 | 48.84 | 69.50 | |||||||||||||
YRS | 67 | 64 | 65 | 66 | 67 | 64 | 65 | 65 | 64 | 65 | 62 | 66 | 42 |