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 | 45.03 | b | 45.03 | k |
1893 | 49.50 | 50.52 | 51.34 | b | 61.48 | 66.73 | 80.20 | 75.02 | 73.34 | 71.25 | 62.55 | a | 51.10 | 47.43 | a | 61.70 | ||||||||||
1894 | 42.40 | 41.54 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.97 | j | |
1895 | ----- | z | ----- | z | ----- | z | ----- | z | 69.47 | 76.42 | 76.79 | 74.26 | 72.35 | 62.67 | d | 48.42 | 44.02 | 65.55 | d | |||||||
1896 | 48.15 | a | 46.41 | 55.39 | 59.12 | 69.58 | 80.54 | b | 76.24 | d | 74.65 | 71.70 | 59.58 | 54.92 | 49.42 | 62.14 | ||||||||||
1897 | 41.89 | 46.27 | 50.00 | 62.73 | b | 70.05 | 76.26 | a | 75.32 | a | 73.18 | 70.26 | a | 60.55 | 56.50 | 45.03 | 60.67 | |||||||||
1898 | 40.42 | 50.96 | 50.23 | 63.37 | 65.52 | 75.68 | 74.90 | 73.82 | 70.68 | 64.89 | 51.95 | 41.90 | 60.36 | |||||||||||||
1899 | 44.05 | 46.50 | 53.73 | 59.78 | 63.52 | 72.13 | 74.76 | 74.68 | 73.78 | 59.89 | 53.52 | 47.84 | 60.35 | |||||||||||||
1900 | 48.76 | 48.34 | 55.73 | 52.32 | 68.94 | 78.05 | a | 78.50 | 76.37 | 69.47 | 62.84 | 54.40 | 47.02 | 61.73 | ||||||||||||
1901 | 46.27 | c | 45.57 | 50.82 | a | 55.72 | a | 64.69 | 73.81 | a | 77.11 | 74.26 | b | 72.52 | 62.37 | a | 53.95 | 46.53 | a | 60.30 | ||||||
1902 | 45.28 | a | 50.38 | g | 49.42 | 63.80 | 66.53 | 77.75 | 74.95 | 73.50 | a | 71.07 | b | 66.14 | m | 50.93 | 45.15 | a | 61.84 | b | ||||||
1903 | 45.76 | 43.16 | 52.44 | 61.00 | n | 64.19 | 73.78 | 77.65 | 74.85 | e | 70.41 | a | ----- | z | ----- | z | ----- | z | 62.78 | d | ||||||
1904 | 46.02 | g | 53.75 | e | 57.66 | 62.85 | c | 66.29 | 74.02 | 75.52 | 71.29 | 67.57 | 59.29 | 52.14 | a | 45.31 | 62.33 | a | ||||||||
1905 | 47.23 | 45.48 | 49.35 | 53.17 | 63.55 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.76 | g | |||||
1906 | 42.26 | 46.18 | 52.15 | 57.57 | 64.50 | 73.72 | 72.73 | 68.98 | 69.33 | 61.10 | 51.57 | 47.13 | 58.93 | |||||||||||||
1907 | 45.69 | 50.43 | 54.24 | 59.28 | 61.19 | 70.38 | 73.52 | 70.48 | 68.82 | 60.47 | 48.65 | d | 47.27 | a | 59.20 | |||||||||||
1908 | 45.79 | 46.31 | 53.68 | i | 58.60 | d | 61.56 | 72.53 | 72.40 | 69.88 | a | 68.34 | a | 58.77 | 51.28 | 45.84 | 59.21 | a | ||||||||
1909 | 50.97 | 45.75 | 47.58 | 57.57 | 62.74 | 72.85 | 73.44 | 69.92 | 67.17 | 61.98 | 53.63 | 43.24 | 58.90 | |||||||||||||
1910 | 47.30 | a | 45.88 | 56.94 | 59.57 | 68.70 | a | 74.53 | 75.61 | 73.42 | 70.87 | 61.66 | 53.25 | 48.42 | a | 61.34 | ||||||||||
1911 | 49.82 | a | 45.66 | 55.55 | 57.52 | a | 65.65 | 71.97 | 71.52 | 73.69 | 69.53 | 59.18 | 48.62 | 38.60 | 58.94 | |||||||||||
1912 | 45.48 | 45.95 | 49.35 | 52.08 | 63.94 | 72.98 | a | 71.76 | 69.94 | ----- | z | 60.12 | c | 50.78 | a | 41.45 | 56.71 | a | ||||||||
1913 | 41.73 | a | 44.76 | a | 49.39 | 58.21 | b | 65.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.27 | 50.28 | f | |||
1914 | 48.79 | 48.23 | 53.23 | 61.41 | a | 67.25 | a | 74.50 | a | 72.35 | 73.68 | a | 70.03 | 60.26 | 54.82 | 41.90 | 60.54 | |||||||||
1915 | 43.24 | 47.48 | 50.05 | 58.42 | 64.90 | 77.31 | c | 78.17 | d | 74.97 | 71.62 | b | 65.34 | 55.03 | 47.12 | a | 61.14 | |||||||||
1916 | 49.60 | j | 54.10 | h | 58.61 | h | 57.36 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | 44.85 | e | 48.44 | a | ----- | z | 58.86 | b | 62.21 | 77.62 | a | 77.18 | 75.53 | 71.47 | 66.18 | a | 57.68 | 53.40 | e | 63.04 | a | |||||
1918 | 44.74 | 51.61 | 54.45 | 60.40 | 65.24 | 78.25 | 77.55 | a | 75.15 | 74.37 | 65.87 | 47.76 | g | 44.16 | c | 62.89 | a | |||||||||
1919 | 43.53 | 44.98 | 52.13 | 63.72 | 69.06 | 77.30 | 74.88 | a | 77.27 | 69.93 | 60.73 | 51.35 | 49.90 | 61.23 | ||||||||||||
1920 | 46.03 | 51.40 | h | 52.68 | a | 57.35 | 68.58 | 74.80 | 79.81 | 74.94 | 72.60 | 61.77 | 54.30 | 47.18 | 62.73 | a | ||||||||||
1921 | 49.55 | 50.59 | 56.62 | a | 59.12 | 67.02 | 77.17 | 75.23 | a | 73.24 | 72.83 | 66.18 | 55.88 | 51.00 | 62.87 | |||||||||||
1922 | 45.34 | i | 50.96 | 52.08 | 57.00 | 68.53 | a | 77.35 | 76.21 | 77.08 | 72.97 | 64.15 | 50.83 | 52.06 | 63.57 | a | ||||||||||
1923 | 51.58 | 48.07 | 51.95 | 59.42 | 70.63 | a | 75.20 | 75.75 | a | 72.75 | c | 69.90 | 62.19 | 50.88 | 42.63 | 60.91 | ||||||||||
1924 | 46.60 | 52.12 | 49.87 | 58.15 | 70.11 | 83.88 | 79.15 | 79.39 | c | 75.90 | 67.77 | a | 59.28 | 46.50 | 64.06 | |||||||||||
1925 | 47.50 | 57.23 | 60.65 | a | 65.14 | a | 72.68 | 74.27 | 78.65 | 75.05 | 74.87 | 64.19 | 54.05 | 45.05 | a | 64.11 | ||||||||||
1926 | 44.05 | 53.37 | a | 54.31 | 57.58 | 68.03 | 79.27 | 79.02 | a | 78.54 | g | 74.00 | a | 66.03 | a | 58.14 | a | 47.44 | 61.93 | a | ||||||
1927 | 54.38 | e | 57.44 | a | 56.23 | 66.58 | e | 74.89 | c | 78.72 | 80.90 | 78.08 | 72.93 | 66.74 | 61.93 | b | 47.27 | 66.34 | ||||||||
1928 | 52.61 | 49.14 | 56.32 | 58.10 | a | 66.53 | 76.92 | 75.44 | 70.90 | a | 68.52 | 61.87 | e | 48.37 | 42.55 | 60.60 | ||||||||||
1929 | 45.16 | 47.12 | 52.31 | 59.62 | 71.42 | a | 80.25 | 76.77 | 75.30 | a | 73.17 | 63.35 | 51.52 | 50.58 | 62.21 | |||||||||||
1930 | 44.23 | 52.79 | 51.55 | 63.66 | a | 63.93 | a | 77.38 | 75.52 | a | 75.85 | 72.22 | 64.19 | 51.42 | 44.47 | 61.43 | ||||||||||
1931 | 44.00 | 47.83 | a | 56.22 | h | 61.75 | 69.85 | 77.77 | 79.82 | 74.90 | 72.69 | a | 66.79 | 52.36 | e | 45.87 | 63.06 | a | ||||||||
1932 | 43.24 | 49.96 | f | 53.73 | a | 61.28 | 67.81 | 76.03 | 76.23 | 75.90 | 72.48 | 62.24 | 56.08 | 44.03 | 62.64 | a | ||||||||||
1933 | 45.10 | a | 47.74 | e | 57.18 | 58.18 | 65.67 | a | 76.35 | 78.62 | a | 76.71 | 73.83 | 64.57 | a | 55.48 | 50.92 | 62.53 | ||||||||
1934 | 46.47 | 52.89 | i | 58.79 | 62.42 | 71.36 | b | 74.17 | 77.45 | 72.71 | b | 72.78 | 67.25 | a | 54.08 | 49.60 | a | 64.28 | a | |||||||
1935 | 49.37 | a | 48.25 | b | 53.42 | 61.08 | 62.06 | 76.58 | 77.39 | 72.42 | 68.80 | b | 63.71 | 51.18 | 44.53 | a | 60.73 | |||||||||
1936 | 45.92 | 46.93 | b | 52.63 | 61.68 | 70.29 | 77.50 | b | 77.85 | 76.26 | 69.95 | 62.85 | 52.02 | 46.68 | 61.71 | |||||||||||
1937 | 39.63 | 50.04 | 52.84 | 62.28 | 70.69 | 77.12 | 79.60 | 77.56 | 73.16 | a | 65.74 | 56.40 | 48.37 | 62.79 | ||||||||||||
1938 | 47.52 | c | 50.14 | 53.95 | a | 62.28 | c | 68.98 | 76.50 | 75.68 | 75.71 | 69.60 | a | 64.87 | 53.83 | 50.29 | 62.45 | |||||||||
1939 | 46.47 | 43.21 | 56.71 | 63.93 | 71.35 | a | 79.03 | 76.37 | 74.79 | 71.63 | 62.00 | 53.60 | 53.10 | 62.68 | ||||||||||||
1940 | 48.63 | 50.00 | 56.89 | 61.95 | 69.63 | 76.25 | 78.44 | 74.39 | m | 72.68 | 63.74 | 53.15 | 51.16 | 62.05 | a | |||||||||||
1941 | 46.09 | b | 50.24 | c | 52.60 | 56.17 | 66.16 | c | 72.57 | 76.24 | 74.19 | 70.73 | 60.60 | 53.83 | 46.50 | 60.49 | ||||||||||
1942 | 48.31 | 47.36 | 51.79 | 58.68 | 67.22 | b | 76.81 | d | 77.48 | e | 74.37 | e | 69.38 | d | 61.46 | d | 57.52 | e | 48.44 | d | 61.57 | |||||
1943 | 45.52 | e | 50.56 | d | 54.83 | e | 63.46 | d | 70.13 | e | 75.02 | d | 75.19 | d | 73.48 | e | 71.58 | d | 61.71 | e | 53.44 | d | 44.04 | d | 61.58 | |
1944 | 41.02 | e | 43.10 | d | 50.07 | d | 56.38 | d | 65.59 | d | 73.75 | d | 76.42 | e | 75.91 | d | 69.56 | d | 63.08 | e | 48.73 | d | 46.71 | e | 59.19 | |
1945 | 44.46 | d | 48.12 | d | 48.96 | d | 56.22 | e | 67.98 | d | 73.23 | d | 78.26 | d | 75.30 | d | 73.80 | 62.60 | 55.78 | 46.70 | i | 62.25 | a | |||
1946 | 42.30 | a | 48.42 | d | 52.52 | e | 65.42 | 67.10 | 79.60 | i | 77.37 | e | 76.34 | 72.27 | 62.50 | 50.83 | 50.82 | 60.53 | a | |||||||
1947 | 40.58 | 53.36 | 54.81 | 59.45 | 69.31 | 74.80 | 79.10 | e | 74.54 | e | 74.36 | e | 66.24 | d | 49.21 | d | 44.75 | e | 61.71 | |||||||
1948 | 47.00 | e | 46.02 | g | 49.37 | e | 63.65 | d | 70.46 | e | 77.88 | d | 79.31 | e | 75.88 | f | 72.80 | e | 63.21 | e | 50.50 | d | 48.09 | d | 62.23 | b |
1949 | 36.28 | d | 46.04 | d | 53.78 | d | 61.13 | d | 67.60 | g | 75.75 | h | 75.18 | i | 76.22 | h | 73.31 | i | 59.95 | j | 57.72 | e | 45.98 | e | 50.16 | f |
1950 | 47.02 | c | 52.10 | d | 56.21 | e | 64.04 | f | 66.06 | e | 75.69 | d | 73.85 | g | 75.54 | d | 71.62 | e | 70.56 | f | 58.50 | d | 53.60 | e | 61.82 | c |
1951 | 45.48 | f | 47.26 | e | 53.48 | e | 58.06 | e | 65.40 | e | 75.15 | d | 77.78 | f | 75.56 | d | 75.24 | g | 65.33 | e | 53.00 | e | 46.06 | g | 61.66 | d |
1952 | 47.77 | c | 46.73 | c | 45.46 | e | 56.71 | d | 68.17 | d | 75.60 | d | 78.22 | d | 75.65 | e | 74.38 | e | 67.63 | d | 49.84 | e | 44.21 | c | 60.86 | |
1953 | 50.37 | d | 46.42 | d | 52.96 | e | 57.67 | d | 62.24 | f | 76.54 | f | 76.75 | g | 75.67 | e | 73.18 | h | 62.81 | e | 56.44 | f | 44.11 | c | 55.72 | e |
1954 | 47.44 | e | 53.50 | f | 52.26 | d | 64.38 | e | 67.82 | 75.23 | b | 77.59 | h | 72.08 | a | 74.02 | d | 66.98 | e | 56.92 | e | 49.37 | a | 62.65 | b | |
1955 | 40.34 | 44.82 | 53.89 | 60.03 | 64.52 | 75.37 | 75.24 | 72.74 | 72.22 | 65.69 | 53.47 | 50.89 | 60.77 | |||||||||||||
1956 | 50.05 | 44.26 | 56.03 | 57.70 | 69.69 | 78.93 | 75.90 | 74.58 | 75.70 | 65.10 | a | 51.60 | 47.35 | e | 62.24 | |||||||||||
1957 | 48.09 | c | 56.04 | d | 53.65 | e | 58.98 | b | 63.32 | c | 76.61 | b | 77.19 | d | 74.77 | g | 71.44 | f | 60.52 | d | 49.98 | g | 49.41 | h | 61.80 | d |
1958 | 44.93 | c | 49.88 | g | 46.96 | e | 57.42 | f | 70.94 | f | 77.77 | f | 77.14 | f | 75.34 | i | 70.41 | h | 61.31 | d | 53.00 | e | 52.10 | e | 51.66 | g |
1959 | 48.91 | d | 47.31 | d | 53.28 | f | 62.50 | d | 66.86 | f | 78.33 | d | 76.62 | f | 72.85 | e | 72.38 | a | 63.83 | b | 51.91 | g | 45.93 | a | 61.50 | d |
1960 | 40.78 | b | 43.82 | a | 57.02 | d | 62.30 | e | 67.42 | a | 79.25 | 76.19 | 76.39 | 74.08 | 62.03 | a | 55.79 | b | 47.48 | c | 61.88 | |||||
1961 | 47.52 | i | 49.88 | g | 55.10 | g | 62.30 | h | 69.69 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.69 | 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 | 63.40 | d | 66.67 | h | 75.62 | d | 76.91 | b | 75.32 | a | 72.21 | b | 63.65 | a | 52.00 | c | 43.18 | a | 65.29 | d |
1983 | 46.81 | b | 47.67 | d | 50.35 | e | 53.58 | f | 67.48 | c | 73.81 | a | 77.38 | b | 75.45 | a | 72.94 | d | 61.28 | f | 52.52 | d | 49.46 | c | 61.39 | b |
1984 | 45.93 | d | 49.37 | f | 55.68 | f | 59.13 | g | 72.20 | d | 74.60 | f | 72.86 | x | 72.11 | d | 71.21 | d | 57.92 | f | 51.80 | g | 46.35 | d | 61.56 | g |
1985 | 42.26 | f | 43.73 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.88 | 48.28 | 53.05 | 59.97 | 67.34 | 76.11 | 76.51 | 74.34 | 71.73 | 63.19 | 53.34 | 46.86 | 61.40 | |||||||||||||
S.D. | 3.35 | 3.41 | 3.01 | 3.12 | 2.95 | 2.45 | 2.09 | 2.10 | 1.99 | 2.35 | 2.92 | 3.19 | 1.52 | |||||||||||||
SKEW | -0.18 | 0.68 | -0.03 | -0.26 | -0.02 | 0.32 | -0.38 | -0.46 | -0.18 | 0.15 | 0.47 | 0.07 | 0.77 | |||||||||||||
MAX | 54.38 | 57.44 | 60.65 | 66.58 | 74.89 | 83.88 | 80.90 | 79.39 | 75.90 | 67.77 | 61.93 | 53.60 | 66.34 | |||||||||||||
MIN | 36.28 | 41.54 | 45.46 | 52.08 | 61.19 | 70.38 | 71.52 | 68.98 | 67.17 | 58.77 | 48.37 | 38.60 | 58.90 | |||||||||||||
YRS | 65 | 60 | 62 | 63 | 65 | 62 | 59 | 61 | 61 | 61 | 61 | 65 | 38 |