| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.00 | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1918 | ----- | z | ----- | z | 54.45 | i | 58.17 | 62.71 | 84.90 | 82.65 | 77.26 | 72.03 | 61.73 | a | 45.20 | 36.84 | 64.61 | |||||||||
| 1919 | 38.81 | 37.11 | 48.00 | 59.53 | 66.71 | 73.97 | 85.84 | 84.00 | 69.67 | 55.16 | 47.23 | 32.94 | 58.25 | |||||||||||||
| 1920 | 44.45 | 47.48 | 44.23 | 51.40 | 63.71 | c | 70.87 | 82.68 | 83.30 | a | 71.13 | 55.65 | 42.70 | 36.35 | 57.83 | |||||||||||
| 1921 | 37.13 | 43.68 | 48.63 | a | 54.07 | 61.68 | 72.23 | 84.23 | 82.34 | b | 68.03 | 66.19 | 56.41 | m | 37.67 | a | 59.63 | |||||||||
| 1922 | 29.65 | 35.26 | e | 41.04 | h | 50.93 | 64.42 | 78.33 | 86.19 | 79.61 | 77.63 | 61.16 | 43.03 | 37.00 | 58.48 | |||||||||||
| 1923 | 39.84 | 36.89 | 46.06 | 53.83 | 63.19 | 67.17 | 82.52 | 82.74 | 74.67 | 55.74 | 45.27 | 38.41 | b | 57.19 | ||||||||||||
| 1924 | ----- | z | 49.62 | 45.68 | 61.27 | 74.97 | 78.17 | 84.39 | 82.32 | 74.20 | 53.97 | 42.17 | 29.19 | 61.45 | ||||||||||||
| 1925 | 37.26 | 41.04 | 47.84 | 52.23 | 62.81 | 72.59 | c | 87.00 | 80.47 | a | 69.87 | 60.79 | g | 48.31 | a | 41.57 | h | 59.94 | ||||||||
| 1926 | 40.00 | a | 47.96 | 60.10 | a | 65.40 | 66.00 | 83.27 | 86.71 | 81.55 | 68.67 | 64.03 | 50.70 | 38.39 | 62.73 | |||||||||||
| 1927 | 39.29 | 39.07 | 48.06 | 55.46 | f | 60.33 | a | 75.13 | g | 84.29 | 80.77 | 65.77 | 64.81 | 49.03 | 38.87 | h | 59.05 | |||||||||
| 1928 | 42.74 | 46.50 | e | 51.66 | b | 53.27 | 74.35 | 74.69 | d | 86.83 | a | 83.50 | c | 78.37 | c | 64.00 | f | 50.89 | k | 40.03 | 63.19 | |||||
| 1929 | 39.13 | 39.78 | e | 53.52 | b | 47.24 | m | 69.41 | b | 71.22 | c | 88.08 | g | 87.42 | g | 70.87 | 68.15 | e | 56.81 | i | 47.13 | 57.40 | ||||
| 1930 | 30.13 | 47.54 | 50.32 | 60.60 | 62.68 | 74.35 | d | 87.13 | 85.13 | 71.32 | k | 64.50 | s | ----- | z | 34.77 | 59.18 | |||||||||
| 1931 | 40.61 | 44.54 | 51.20 | a | 57.18 | b | 72.42 | 66.73 | 91.13 | 88.00 | f | 70.83 | f | 61.79 | c | 45.57 | b | 34.74 | 56.59 | |||||||
| 1932 | 35.26 | 42.04 | c | 49.74 | 56.28 | l | 64.32 | 76.97 | 82.65 | 81.84 | 85.14 | p | 68.03 | b | 53.37 | 34.97 | b | 58.92 | ||||||||
| 1933 | 36.72 | f | 40.25 | 47.68 | 58.70 | 59.58 | 74.40 | 88.26 | 86.65 | 72.17 | 71.55 | 53.77 | 46.74 | 63.61 | ||||||||||||
| 1934 | 47.81 | 52.60 | r | 61.13 | 67.47 | 71.87 | 70.62 | i | 85.97 | 87.52 | 76.80 | 64.60 | a | 49.53 | 38.03 | 65.07 | ||||||||||
| 1935 | 36.03 | 42.50 | 44.16 | 55.10 | 68.19 | 75.78 | c | 83.26 | ----- | z | 81.77 | ----- | z | 42.73 | 39.13 | 56.87 | ||||||||||
| 1936 | 38.23 | 40.62 | 50.48 | 63.33 | 69.52 | 74.87 | 88.10 | 85.53 | a | 75.67 | 68.83 | a | 50.23 | 30.38 | w | 64.13 | ||||||||||
| 1937 | ----- | z | 38.43 | 48.83 | b | 53.97 | 70.42 | 72.60 | 86.71 | 82.97 | 77.27 | 66.29 | 47.70 | 45.53 | a | 62.79 | ||||||||||
| 1938 | 38.97 | 39.57 | 44.48 | 58.30 | 66.74 | 78.86 | a | 87.52 | 83.55 | 79.00 | a | 60.39 | 46.10 | 44.87 | 60.70 | |||||||||||
| 1939 | 41.84 | 41.27 | b | 55.30 | a | 67.44 | l | 70.17 | g | 73.47 | ----- | z | 88.32 | 77.17 | 64.13 | 55.10 | 45.26 | 60.21 | ||||||||
| 1940 | 41.16 | 44.52 | 55.90 | 61.00 | 72.52 | 83.13 | ----- | z | 87.87 | 70.97 | 68.67 | g | 44.58 | d | 41.84 | 60.35 | ||||||||||
| 1941 | 40.87 | 45.54 | 57.32 | 58.90 | 64.97 | b | 71.33 | 86.52 | 79.65 | 67.48 | a | 61.55 | 51.73 | 39.06 | 60.41 | |||||||||||
| 1942 | 33.74 | 40.50 | 49.39 | 59.53 | 60.62 | b | 71.00 | 87.48 | 86.58 | 81.24 | e | 68.87 | 48.35 | g | 42.45 | 61.95 | ||||||||||
| 1943 | ----- | z | 43.04 | 50.42 | 60.77 | 62.61 | 67.30 | 84.81 | 81.94 | 83.97 | 61.90 | 49.83 | 39.94 | 62.41 | ||||||||||||
| 1944 | 36.52 | 41.24 | 49.42 | 55.27 | 68.03 | 68.23 | 80.84 | 80.92 | s | 75.43 | 70.15 | d | 43.87 | 39.87 | 57.17 | |||||||||||
| 1945 | 41.65 | 45.18 | 45.29 | ----- | z | 63.58 | 71.37 | 87.74 | 84.73 | a | 75.50 | 67.68 | 42.80 | 37.93 | a | 60.31 | ||||||||||
| 1946 | 38.89 | c | 41.07 | 49.32 | 60.60 | 67.77 | 69.83 | 84.22 | d | 83.61 | 72.23 | 54.87 | 45.17 | 43.97 | 59.30 | |||||||||||
| 1947 | 39.94 | ----- | z | 53.35 | 61.03 | 72.68 | 69.83 | 80.97 | 80.35 | 77.77 | 65.19 | 45.77 | 41.74 | 62.60 | ||||||||||||
| 1948 | 44.94 | 42.59 | 44.42 | 49.40 | 61.03 | 74.47 | ----- | z | 78.90 | 73.73 | 64.48 | 48.69 | d | 33.40 | a | 56.00 | ||||||||||
| 1949 | 31.10 | 38.89 | 48.10 | j | 64.70 | ----- | z | 76.06 | m | 84.59 | b | 83.32 | 76.38 | i | 62.65 | e | 58.17 | 40.19 | 57.95 | |||||||
| 1950 | 33.71 | 43.29 | 46.03 | 56.14 | a | 64.58 | 70.07 | 85.90 | 85.29 | 77.50 | d | 62.24 | f | 51.73 | 47.55 | 60.16 | ||||||||||
| 1951 | 37.97 | ----- | z | ----- | z | 65.10 | a | 66.65 | 77.47 | 85.81 | 84.29 | 78.27 | 58.94 | 47.04 | d | 35.96 | g | 66.84 | ||||||||
| 1952 | 33.83 | g | 40.45 | 40.26 | 62.37 | 66.77 | 70.00 | 85.58 | 83.70 | a | 79.40 | 72.61 | 47.33 | 36.29 | 62.25 | |||||||||||
| 1953 | 45.29 | 46.46 | 47.32 | 56.67 | 58.26 | 65.93 | 85.94 | 79.23 | ----- | z | ----- | z | ----- | z | ----- | z | 60.64 | |||||||||
| 1954 | ----- | z | 47.61 | 45.35 | 59.00 | 69.33 | a | 68.37 | c | 84.45 | 76.32 | 72.83 | 63.97 | 54.90 | a | 38.48 | 61.87 | |||||||||
| 1955 | 34.87 | 40.00 | 44.13 | 45.47 | 62.87 | 76.27 | 78.16 | 85.65 | 77.10 | i | ----- | z | 45.21 | f | 38.48 | 56.21 | ||||||||||
| 1956 | 37.90 | b | 37.00 | 48.65 | 61.21 | a | 65.74 | 71.87 | 83.32 | 79.81 | 76.27 | 58.35 | 52.63 | 43.52 | 59.69 | |||||||||||
| 1957 | 34.00 | 44.21 | 50.04 | c | 55.60 | 65.42 | 80.71 | i | 82.77 | 79.42 | ----- | z | ----- | z | ----- | z | ----- | z | 58.78 | |||||||
| 1958 | ----- | z | ----- | z | ----- | z | 54.33 | 75.00 | 70.83 | 83.06 | 88.45 | 73.60 | 69.29 | 50.90 | 48.35 | 68.20 | ||||||||||
| 1959 | 43.06 | 43.79 | 51.23 | 60.87 | 62.10 | 76.90 | 89.55 | 81.42 | 68.10 | 63.81 | 56.87 | 43.00 | 61.72 | |||||||||||||
| 1960 | 34.41 | d | 40.48 | 53.13 | 57.13 | 60.06 | 79.83 | 91.33 | d | 80.00 | a | 79.70 | 66.48 | 43.21 | a | 40.13 | 60.49 | |||||||||
| 1961 | 43.53 | a | 45.68 | 46.52 | 60.38 | f | 57.73 | p | 81.50 | 88.00 | 86.67 | a | 66.00 | x | 64.93 | b | ----- | z | ----- | z | 65.26 | |||||
| 1962 | ----- | z | ----- | z | 44.07 | a | 64.32 | b | 60.00 | e | 77.29 | i | 84.90 | k | 80.70 | d | 80.67 | c | 63.52 | f | 51.55 | a | 45.35 | e | 60.95 | |
| 1963 | 45.12 | e | 52.73 | m | 48.84 | f | 50.96 | d | 67.24 | j | 71.67 | l | 80.05 | l | 82.96 | d | 78.19 | i | 63.28 | f | 48.06 | n | 44.59 | i | 59.68 | |
| 1964 | 38.74 | d | 47.39 | f | 47.35 | k | 55.12 | e | 62.52 | 70.65 | d | ----- | z | 80.45 | b | 72.93 | c | 69.13 | 43.48 | e | 37.11 | c | 58.90 | |||
| 1965 | 39.70 | a | 47.39 | 51.21 | b | 57.53 | 65.84 | 75.85 | c | 81.65 | 78.97 | 72.50 | 69.39 | 49.20 | 39.48 | 60.73 | ||||||||||
| 1966 | 39.58 | g | 42.22 | a | 49.71 | 62.21 | a | 71.45 | 70.14 | b | 80.19 | 83.90 | b | 77.12 | e | 65.35 | 49.23 | 40.77 | 62.94 | |||||||
| 1967 | 42.19 | 47.61 | 46.29 | 48.07 | a | 70.76 | j | 73.83 | 88.19 | 90.55 | 81.74 | c | 66.43 | c | 52.76 | a | 38.00 | 61.42 | ||||||||
| 1968 | 40.68 | 47.76 | 56.68 | f | 56.93 | ----- | z | 80.33 | o | 88.16 | 76.46 | c | 75.43 | 63.45 | b | 46.54 | b | 35.97 | 59.04 | |||||||
| 1969 | 34.87 | 37.79 | 47.68 | 59.37 | c | 69.40 | a | 71.93 | a | 83.74 | 85.39 | 76.17 | 55.81 | 53.17 | 43.33 | d | 59.89 | |||||||||
| 1970 | 37.61 | 48.21 | 47.19 | 50.55 | a | 67.23 | 77.92 | d | 86.32 | c | 87.11 | d | 72.53 | 61.86 | c | 49.82 | h | 33.54 | r | 63.65 | ||||||
| 1971 | 41.42 | 43.89 | 42.90 | b | 53.79 | f | 63.97 | 68.23 | 82.91 | h | 88.30 | d | 71.13 | 59.45 | 48.63 | 35.32 | 56.32 | |||||||||
| 1972 | 37.22 | d | 43.83 | 53.65 | 54.03 | 70.73 | a | 78.20 | 86.73 | e | 84.77 | 72.62 | d | 61.45 | 45.33 | f | 32.03 | b | 61.39 | |||||||
| 1973 | 35.83 | b | 43.14 | 46.81 | 58.59 | c | 72.37 | a | ----- | z | ----- | z | ----- | z | 77.38 | a | 61.43 | a | 43.54 | d | 40.93 | c | 53.34 | |||
| 1974 | 35.83 | a | 42.64 | 47.00 | a | 55.22 | c | 62.36 | c | 82.04 | f | 89.14 | q | 80.46 | g | 83.28 | e | 65.24 | b | 48.93 | 39.00 | e | 53.28 | |||
| 1975 | 40.85 | e | 39.46 | 44.48 | 45.77 | d | 66.47 | a | 72.79 | b | 85.52 | 78.04 | h | 79.10 | 58.73 | e | 45.26 | g | 45.13 | 57.83 | ||||||
| 1976 | 43.07 | c | 44.29 | a | 46.23 | e | 55.43 | b | 71.79 | c | 74.42 | k | 87.65 | e | 76.04 | c | 76.88 | e | 66.50 | a | 58.32 | b | 44.46 | g | 62.62 | |
| 1977 | 40.38 | b | 52.46 | 48.63 | a | 67.37 | 58.11 | c | 80.77 | 84.52 | 83.48 | h | 69.97 | 65.35 | 48.40 | 45.62 | j | 61.60 | ||||||||
| 1978 | 41.81 | ----- | z | 57.19 | 52.40 | e | 66.81 | 75.87 | 86.55 | 82.77 | 70.03 | 70.66 | b | 43.85 | d | 35.87 | 62.16 | |||||||||
| 1979 | 31.48 | 41.89 | 53.45 | b | 55.77 | 69.90 | b | ----- | z | 85.23 | ----- | z | ----- | z | 63.48 | 44.17 | 43.71 | 54.34 | ||||||||
| 1980 | 38.45 | 46.29 | a | 47.04 | e | 59.40 | 64.94 | 67.52 | c | ----- | z | 80.65 | e | 76.69 | a | 66.00 | 48.47 | 43.87 | 58.12 | |||||||
| 1981 | 40.11 | d | 44.86 | 52.40 | f | 61.97 | 64.19 | ----- | z | 80.35 | 87.68 | 79.20 | e | 62.59 | d | 47.47 | 39.72 | b | 60.81 | |||||||
| 1982 | 35.90 | 42.57 | 46.32 | 51.67 | 67.68 | 73.30 | 81.17 | s | 82.06 | 72.20 | 60.74 | 42.70 | 37.23 | 55.67 | ||||||||||||
| 1983 | 42.97 | 44.14 | 48.19 | 50.50 | n | 68.65 | 73.37 | 79.90 | 84.55 | 71.00 | t | 65.81 | 44.37 | 35.19 | 58.71 | |||||||||||
| 1984 | 37.74 | 42.28 | 51.61 | 52.93 | 68.55 | b | 69.93 | 88.39 | 85.29 | 73.20 | 56.90 | 41.13 | 35.16 | l | 60.72 | |||||||||||
| 1985 | 33.87 | 42.29 | 46.53 | a | 64.97 | 69.30 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.39 | ||||
| 1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.93 | 78.35 | 87.06 | 65.07 | 65.16 | 47.33 | 39.81 | 66.10 | ||||||||
| 1987 | 35.84 | 43.07 | 50.26 | 67.20 | 70.42 | 79.67 | 75.93 | d | 83.74 | 80.20 | 71.52 | 46.17 | 36.26 | 61.69 | ||||||||||||
| 1988 | 40.20 | p | 50.72 | 51.58 | 60.03 | 65.65 | 74.70 | 88.26 | 85.17 | m | 78.47 | 73.81 | 42.53 | 35.65 | 62.14 | |||||||||||
| 1989 | 37.32 | 33.50 | 47.61 | 60.40 | 63.29 | 77.63 | 84.39 | 81.41 | i | 74.57 | g | 61.26 | 51.70 | j | 44.87 | 56.70 | ||||||||||
| 1990 | 41.81 | 41.39 | 50.26 | 65.60 | 63.42 | 73.53 | k | 93.33 | y | 76.40 | k | 80.06 | l | 65.03 | a | 48.20 | 31.06 | 50.85 | ||||||||
| 1991 | 42.97 | 51.68 | 43.81 | 52.30 | ----- | z | 69.57 | 85.87 | ----- | z | 80.70 | 65.26 | 48.33 | 39.58 | 58.01 | |||||||||||
| 1992 | 38.45 | 48.31 | 58.06 | 60.53 | 76.42 | 80.05 | h | 84.00 | 88.26 | 74.03 | 64.52 | 43.03 | 30.32 | 60.54 | ||||||||||||
| 1993 | 27.23 | 31.18 | 47.42 | 52.63 | 70.65 | 70.47 | 73.45 | 79.23 | 78.47 | 64.77 | 46.37 | 39.13 | 56.75 | |||||||||||||
| 1994 | 46.35 | 42.04 | 56.39 | 61.40 | 70.19 | 78.33 | 88.35 | 86.32 | 77.40 | 59.48 | 36.00 | 38.32 | 61.72 | |||||||||||||
| 1995 | 40.81 | 53.29 | 45.84 | 52.67 | 65.48 | 76.30 | ----- | z | ----- | z | ----- | z | ----- | z | 50.17 | ----- | z | 54.94 | ||||||||
| 1996 | ----- | z | ----- | z | ----- | z | 58.07 | 60.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.50 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 38.75 | 43.13 | 49.15 | 57.59 | 66.41 | 73.93 | 84.87 | 83.17 | 75.08 | 63.92 | 47.73 | 39.33 | 59.94 | |||||||||||||
| S.D. | 4.14 | 4.27 | 4.23 | 5.09 | 4.33 | 4.45 | 3.37 | 3.35 | 4.36 | 4.54 | 4.39 | 4.33 | 1.78 | |||||||||||||
| SKEW | -0.38 | -0.04 | 0.77 | -0.13 | 0.22 | 0.37 | -0.95 | -0.10 | -0.19 | -0.19 | 0.29 | 0.00 | -0.35 | |||||||||||||
| MAX | 47.81 | 53.29 | 61.13 | 67.47 | 76.42 | 84.90 | 91.33 | 90.55 | 83.97 | 73.81 | 58.32 | 48.35 | 62.73 | |||||||||||||
| MIN | 27.23 | 31.18 | 40.26 | 45.47 | 58.11 | 65.93 | 73.45 | 76.04 | 65.07 | 53.97 | 36.00 | 29.19 | 56.75 | |||||||||||||
| NO YRS | 66 | 68 | 68 | 70 | 71 | 63 | 63 | 63 | 63 | 65 | 63 | 64 | 15 | |||||||||||||