| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.25 | k | 9999.00 | |
| 1931 | ----- | z | 54.00 | 55.30 | a | 64.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.07 | |||
| 1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.57 | x | 59.07 | 47.10 | 53.08 | |||
| 1937 | 36.90 | 45.82 | 52.74 | 51.67 | 65.50 | a | 70.87 | 79.23 | 76.26 | 73.10 | 66.29 | 53.03 | 50.19 | 60.13 | ||||||||||||
| 1938 | 48.35 | 47.96 | 51.16 | 58.90 | 68.03 | 75.20 | 82.13 | 76.26 | ----- | z | ----- | z | ----- | z | ----- | z | 63.50 | |||||||||
| 1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.71 | 70.74 | 71.93 | a | 62.77 | 49.23 | 41.48 | 61.81 | ||||||
| 1949 | 39.26 | 45.39 | 52.19 | 62.57 | 69.10 | 73.70 | 76.42 | 74.61 | 74.87 | 60.97 | 59.90 | 44.45 | 61.12 | |||||||||||||
| 1950 | 36.52 | 46.39 | 48.19 | 56.87 | 65.87 | 71.17 | 80.58 | 82.13 | 74.70 | 57.94 | 51.90 | 52.45 | 60.39 | |||||||||||||
| 1951 | 44.68 | 49.86 | 49.35 | 66.13 | 66.71 | 78.47 | 79.06 | 78.32 | 75.53 | 61.00 | 52.60 | 44.32 | 62.17 | |||||||||||||
| 1952 | 41.16 | 48.79 | 47.94 | 62.80 | 66.00 | b | 64.47 | 78.46 | g | 72.84 | 78.89 | c | 76.10 | a | 54.64 | b | 44.00 | g | 61.36 | |||||||
| 1953 | 49.93 | a | 50.86 | 51.73 | e | 57.48 | a | 61.64 | f | 61.83 | l | 77.61 | 73.84 | 73.85 | c | 63.33 | a | 52.97 | 47.77 | 59.94 | ||||||
| 1954 | 42.71 | 52.67 | a | 51.52 | b | 56.34 | a | 64.73 | a | 64.50 | j | 70.93 | d | 68.92 | f | 67.23 | 62.35 | e | 55.50 | j | 46.67 | m | 58.56 | |||
| 1955 | ----- | z | 46.00 | o | 49.00 | a | 51.93 | 64.71 | 72.53 | 72.75 | o | 85.27 | a | 76.60 | 64.77 | 50.67 | 47.04 | f | 64.44 | |||||||
| 1956 | 45.35 | 41.00 | 49.94 | 64.20 | 74.39 | c | 61.00 | r | 79.48 | ----- | z | 68.96 | g | 60.00 | h | 52.00 | z | 47.84 | 57.46 | |||||||
| 1957 | 39.43 | c | 49.71 | 53.35 | e | 61.33 | 71.73 | t | 72.90 | 75.33 | p | ----- | z | 79.73 | 60.97 | 54.97 | 48.87 | a | 57.92 | |||||||
| 1958 | 48.29 | 53.32 | 50.74 | 56.97 | 72.48 | 73.13 | 84.39 | 83.35 | 72.83 | 67.81 | 51.63 | 51.58 | 63.88 | |||||||||||||
| 1959 | 46.16 | 46.79 | 53.03 | 60.60 | 63.39 | 68.23 | 81.58 | 77.29 | 65.87 | 63.90 | 56.17 | 48.06 | 60.92 | |||||||||||||
| 1960 | 42.61 | 48.29 | a | 53.87 | 57.53 | 59.23 | 75.66 | a | 83.93 | c | 75.26 | 76.33 | 63.48 | 51.33 | 48.65 | 61.35 | ||||||||||
| 1961 | 51.13 | 49.32 | 50.87 | 56.57 | 61.61 | c | 79.76 | a | 80.19 | 84.07 | a | 71.23 | 63.77 | 50.63 | 45.94 | 62.09 | ||||||||||
| 1962 | 46.35 | 50.11 | 50.71 | 61.46 | b | 58.97 | 72.23 | 79.03 | 75.52 | 74.87 | 63.68 | 53.63 | 50.55 | 61.43 | ||||||||||||
| 1963 | 44.32 | 56.81 | a | 51.16 | 53.27 | 66.23 | 68.67 | 71.65 | 76.45 | b | 77.13 | 62.61 | 50.93 | 49.45 | 60.72 | |||||||||||
| 1964 | 46.19 | 52.14 | 51.03 | 56.13 | 62.16 | 66.70 | 76.03 | 74.55 | 71.30 | 66.06 | 49.60 | 43.68 | 59.63 | |||||||||||||
| 1965 | 44.45 | 50.79 | 61.42 | 59.30 | 63.74 | 71.30 | 81.19 | 76.29 | 73.07 | 68.19 | 53.30 | 44.83 | a | 62.32 | ||||||||||||
| 1966 | 46.35 | 48.39 | 52.58 | 62.70 | 68.83 | a | 71.23 | 75.81 | 80.00 | 74.93 | 63.52 | 55.65 | g | 48.00 | 62.94 | |||||||||||
| 1967 | 46.61 | 51.89 | 48.32 | 53.37 | 68.87 | 75.75 | b | 80.73 | a | 87.23 | 78.33 | 63.00 | 54.83 | 44.26 | 62.77 | |||||||||||
| 1968 | 45.77 | 58.17 | 55.35 | 57.63 | 64.61 | 71.73 | 79.97 | 72.92 | f | 73.79 | a | 60.77 | 51.70 | 43.06 | 60.23 | |||||||||||
| 1969 | 38.94 | 44.14 | 57.03 | 55.47 | 70.16 | 71.83 | a | 75.00 | a | 76.61 | m | 70.45 | a | 60.77 | 55.93 | 47.59 | b | 58.85 | ||||||||
| 1970 | 46.74 | 55.64 | 54.71 | 52.50 | 66.29 | 74.71 | b | 76.94 | n | 78.03 | 68.90 | 61.71 | 51.67 | 43.29 | 59.47 | |||||||||||
| 1971 | 45.68 | 47.64 | 47.26 | 56.66 | a | 65.35 | 64.07 | 78.22 | d | 78.13 | a | 69.47 | 60.77 | 50.40 | 41.58 | 58.77 | ||||||||||
| 1972 | 42.42 | 48.66 | 54.65 | 51.80 | 66.65 | 72.28 | e | 80.13 | 82.36 | c | 69.07 | 64.68 | 52.20 | 41.65 | 60.54 | |||||||||||
| 1973 | 43.32 | 53.36 | 50.61 | 59.56 | c | 67.35 | 68.50 | 78.17 | m | 74.04 | f | 72.93 | 60.42 | 47.07 | c | 47.68 | 57.08 | |||||||||
| 1974 | 43.10 | 47.54 | 52.45 | 55.77 | 60.26 | 72.77 | 74.45 | 77.26 | 81.97 | 68.32 | 54.17 | 48.87 | 61.41 | |||||||||||||
| 1975 | 47.74 | 47.46 | 50.13 | 53.20 | 66.87 | 68.53 | 75.19 | 73.00 | a | 80.00 | 56.39 | 49.77 | 49.29 | 59.80 | ||||||||||||
| 1976 | 50.81 | 48.90 | 52.03 | 57.10 | 66.32 | 66.77 | 74.68 | 71.90 | 74.50 | 66.81 | 58.37 | 50.97 | 61.60 | |||||||||||||
| 1977 | 51.32 | 55.07 | 50.32 | 63.10 | 58.03 | 74.14 | a | 75.16 | 79.29 | 66.83 | 63.61 | 49.90 | 47.13 | 61.16 | ||||||||||||
| 1978 | 48.29 | 51.54 | 58.81 | 55.40 | 62.10 | 72.13 | 77.29 | 74.39 | 67.20 | 68.61 | 50.27 | 42.61 | 60.72 | |||||||||||||
| 1979 | 41.00 | 45.04 | 57.55 | 57.53 | 66.87 | 72.45 | a | 76.94 | 74.30 | a | 74.73 | 64.57 | a | 53.40 | 49.90 | 61.19 | ||||||||||
| 1980 | 44.52 | 52.48 | 50.80 | a | 60.40 | 62.77 | 64.37 | 76.87 | 74.84 | 72.90 | 66.94 | 54.07 | 51.10 | 61.00 | ||||||||||||
| 1981 | 50.87 | a | 52.93 | 56.39 | 58.17 | 62.13 | 66.63 | 77.26 | 80.23 | 73.13 | 62.77 | 55.39 | b | 47.35 | 61.94 | |||||||||||
| 1982 | 43.23 | 47.07 | 51.71 | 55.33 | 67.48 | 72.60 | 73.06 | 75.90 | 72.33 | 62.61 | 50.93 | 46.35 | 59.89 | |||||||||||||
| 1983 | 48.65 | 50.57 | 54.10 | 60.10 | 67.03 | 63.87 | o | 69.26 | 75.97 | 69.07 | 63.48 | 51.53 | 41.39 | 59.19 | ||||||||||||
| 1984 | 50.06 | 51.17 | 54.65 | 53.17 | 61.00 | 68.50 | 80.52 | 77.13 | 70.53 | 56.23 | 48.77 | 42.32 | 59.50 | |||||||||||||
| 1985 | 46.32 | 47.68 | 50.32 | 59.57 | 63.06 | 72.87 | 83.84 | 76.84 | 67.60 | 59.26 | 41.72 | a | 45.50 | a | 59.55 | |||||||||||
| 1986 | 49.87 | 48.11 | 58.65 | 56.70 | 64.61 | 73.73 | 72.19 | 82.52 | 66.73 | 73.00 | s | ----- | z | ----- | z | 63.68 | ||||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 45.27 | 49.84 | 52.53 | 57.86 | 65.25 | 71.40 | 77.63 | 77.50 | 72.94 | 63.45 | 52.39 | 46.68 | 61.00 | |||||||||||||
| S.D. | 3.92 | 3.57 | 3.18 | 3.77 | 3.55 | 3.69 | 3.72 | 3.90 | 4.01 | 3.68 | 3.37 | 3.19 | 1.15 | |||||||||||||
| SKEW | -0.41 | 0.13 | 0.76 | 0.25 | 0.15 | -0.15 | -0.21 | 0.69 | 0.16 | 0.81 | -0.30 | -0.15 | 0.24 | |||||||||||||
| MAX | 51.32 | 58.17 | 61.42 | 66.13 | 74.39 | 79.76 | 84.39 | 87.23 | 81.97 | 76.10 | 59.90 | 52.45 | 63.88 | |||||||||||||
| MIN | 36.52 | 41.00 | 47.26 | 51.67 | 58.03 | 64.07 | 69.26 | 70.74 | 65.87 | 56.23 | 41.72 | 41.39 | 58.77 | |||||||||||||
| NO YRS | 39 | 40 | 41 | 41 | 38 | 36 | 36 | 35 | 39 | 38 | 37 | 37 | 26 | |||||||||||||