| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.00 | 46.00 | ||
| 1907 | 35.42 | 51.07 | 51.48 | 74.00 | z | 70.19 | 75.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.73 | ||||||
| 1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 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 | ----- | z | 9999.00 | |
| 1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.00 | j | 86.06 | 72.07 | 61.93 | a | 45.23 | 41.77 | 61.41 | |||||
| 1932 | 40.81 | 42.83 | 51.32 | 62.10 | 64.97 | 78.23 | 80.35 | 80.13 | 77.07 | 65.29 | 56.67 | 39.71 | 61.62 | |||||||||||||
| 1933 | 42.42 | 43.37 | a | 51.48 | 60.76 | a | 60.71 | 77.50 | 86.71 | 84.35 | 71.90 | 71.23 | 53.80 | 49.48 | 62.81 | |||||||||||
| 1934 | 51.87 | 51.11 | 63.52 | 72.07 | 74.23 | 77.10 | a | 85.29 | 86.58 | 75.70 | 65.52 | 53.17 | a | 42.26 | 66.53 | |||||||||||
| 1935 | 43.20 | a | 48.93 | 49.71 | 57.23 | 69.29 | 76.50 | 82.94 | ----- | z | 80.73 | 62.65 | 47.62 | a | 40.06 | 59.90 | ||||||||||
| 1936 | 43.77 | 37.17 | 53.32 | 65.03 | 73.65 | 77.63 | 85.06 | 86.13 | 75.00 | 71.03 | 50.10 | 46.06 | 63.66 | |||||||||||||
| 1937 | 24.19 | 41.61 | 50.45 | 58.23 | 72.87 | 76.87 | 87.26 | 83.39 | 77.70 | 72.81 | 66.70 | 46.03 | 63.18 | |||||||||||||
| 1938 | 42.26 | 42.64 | 52.23 | 62.47 | 69.39 | 80.80 | 87.61 | 82.16 | 81.77 | 64.94 | 48.73 | 44.10 | 63.26 | |||||||||||||
| 1939 | 47.29 | 42.89 | 56.45 | 68.67 | 73.03 | 73.30 | 87.58 | 88.39 | 80.43 | 70.29 | 63.13 | 53.55 | 67.08 | |||||||||||||
| 1940 | 37.81 | 46.45 | 52.50 | a | 54.73 | 71.81 | 84.77 | 85.58 | 89.16 | 73.00 | 67.61 | 49.87 | 48.97 | a | 63.52 | |||||||||||
| 1941 | 46.13 | 50.43 | 59.06 | 61.93 | 68.97 | 73.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.07 | |||||||
| 1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.17 | 47.10 | 48.63 | |||
| 1943 | 38.58 | 52.18 | 54.65 | 66.17 | 66.10 | 70.38 | a | 86.55 | 81.39 | 83.73 | 64.77 | 52.37 | 39.23 | 63.01 | ||||||||||||
| 1944 | 45.94 | 46.97 | 55.10 | 63.60 | 71.71 | 74.13 | 86.74 | 88.06 | 80.77 | 72.39 | 48.70 | 36.74 | 64.24 | |||||||||||||
| 1945 | 44.32 | 49.54 | 49.87 | 61.93 | 70.48 | 77.57 | 92.16 | 88.90 | 77.17 | 70.42 | 50.03 | 41.87 | 64.52 | |||||||||||||
| 1946 | 45.81 | 48.96 | 55.29 | 67.77 | 74.65 | ----- | z | 105.00 | z | 91.52 | 75.70 | 61.45 | 49.53 | 47.74 | 61.84 | |||||||||||
| 1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1948 | ----- | z | ----- | z | 55.15 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1949 | ----- | z | ----- | z | ----- | z | 52.50 | z | 72.94 | 78.20 | 83.52 | 82.58 | 77.40 | 65.32 | 62.20 | e | 48.81 | 71.37 | ||||||||
| 1950 | 44.58 | 52.39 | 53.35 | 57.47 | 69.58 | 75.80 | j | 84.77 | 83.74 | 74.60 | 63.68 | 42.62 | n | 53.04 | f | 64.91 | ||||||||||
| 1951 | 45.35 | h | 42.96 | 41.94 | 61.87 | 66.97 | 78.50 | d | 91.12 | e | 83.94 | 79.57 | 67.48 | 48.07 | 37.87 | 63.66 | ||||||||||
| 1952 | 44.48 | 51.79 | e | 57.75 | o | 69.85 | q | ----- | z | 69.50 | z | 87.97 | 83.61 | 80.63 | 71.19 | 44.73 | 41.87 | 63.29 | ||||||||
| 1953 | 51.55 | 49.89 | 53.84 | 58.00 | 63.48 | 69.63 | 85.97 | 81.10 | 80.43 | 64.65 | 57.07 | a | 47.10 | a | 63.56 | |||||||||||
| 1954 | 43.23 | 50.46 | 51.61 | 61.87 | 72.13 | 70.57 | 85.19 | 78.42 | 72.20 | 62.68 | 56.41 | a | 45.29 | 62.50 | ||||||||||||
| 1955 | 43.48 | 45.86 | 49.87 | 54.70 | 65.16 | 77.57 | b | 73.94 | o | 84.29 | x | 74.00 | c | 64.39 | 44.37 | 42.48 | 56.19 | |||||||||
| 1956 | 43.19 | 38.54 | a | 52.94 | 63.73 | 68.29 | 72.43 | 81.77 | r | ----- | z | 77.11 | l | 59.61 | 45.00 | 45.84 | 54.40 | |||||||||
| 1957 | 28.81 | 45.04 | 51.03 | a | 59.87 | 67.32 | 78.28 | a | 82.48 | 79.73 | a | 78.11 | c | 55.97 | b | 47.38 | a | 48.10 | 60.18 | |||||||
| 1958 | 44.00 | 53.36 | 49.13 | 57.53 | 74.84 | 76.57 | 87.42 | 89.03 | 74.63 | 68.87 | 51.10 | 49.03 | 64.63 | |||||||||||||
| 1959 | 44.42 | 42.21 | 53.16 | 62.97 | 62.47 | a | 76.40 | 87.84 | 82.13 | 70.93 | 63.35 | 50.27 | 42.29 | 61.54 | ||||||||||||
| 1960 | 36.06 | 44.52 | 53.29 | 59.27 | 62.94 | 79.87 | 90.32 | 80.71 | 77.93 | 64.55 | 48.00 | 39.90 | 61.45 | |||||||||||||
| 1961 | 43.68 | 50.57 | 52.10 | 58.90 | 64.55 | 82.57 | 88.16 | 88.94 | 71.20 | 61.42 | 46.70 | 41.90 | 62.56 | |||||||||||||
| 1962 | 39.58 | 45.50 | 48.55 | 64.63 | 60.84 | 73.00 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.82 | ||||||
| 1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.38 | v | 86.35 | 83.43 | a | 73.83 | 74.57 | a | 54.67 | 43.39 | h | 74.57 | ||||
| 1966 | 47.06 | m | 47.56 | a | 57.92 | g | 67.88 | m | 71.67 | s | 80.00 | v | 83.61 | ----- | z | 81.59 | a | 70.71 | 63.88 | n | 45.87 | a | 65.87 | |||
| 1967 | 46.83 | b | 51.00 | e | 51.18 | c | 52.29 | b | 67.78 | d | 76.54 | b | 89.62 | g | 91.28 | b | 83.07 | a | 65.17 | b | 49.91 | h | 41.12 | g | 65.01 | |
| 1968 | 42.77 | e | 49.46 | c | 58.12 | f | 60.00 | e | 67.03 | 77.14 | b | 89.13 | a | 78.06 | 76.04 | d | 63.54 | e | 49.74 | c | 45.29 | n | 65.29 | |||
| 1969 | 38.50 | q | ----- | z | 57.10 | j | 61.03 | a | 72.37 | a | 77.47 | 83.68 | 83.61 | 75.57 | 57.77 | 50.53 | 41.29 | 67.04 | ||||||||
| 1970 | 41.32 | 47.54 | 49.77 | 53.50 | 68.52 | 80.10 | 88.13 | 88.32 | 70.77 | 60.65 | 49.67 | 38.90 | 61.43 | |||||||||||||
| 1971 | 42.77 | 46.82 | 48.13 | 58.33 | 68.45 | 72.60 | 85.87 | 90.45 | 69.50 | 56.13 | 46.80 | 39.81 | 60.47 | |||||||||||||
| 1972 | 39.29 | 47.10 | 56.48 | 56.33 | 71.45 | 78.53 | 86.83 | a | 87.10 | 71.13 | 58.97 | 46.87 | 35.94 | 61.34 | ||||||||||||
| 1973 | 38.68 | 46.46 | 52.65 | 59.03 | 72.03 | 78.80 | 86.61 | 82.74 | 71.30 | 58.00 | g | 45.30 | 45.61 | 61.75 | ||||||||||||
| 1974 | 36.48 | 50.56 | j | 51.26 | 58.43 | 66.06 | 84.50 | 83.29 | 84.61 | 81.90 | 65.19 | 50.13 | 43.94 | 64.16 | ||||||||||||
| 1975 | 45.65 | 43.54 | 50.19 | 53.37 | 67.81 | 73.20 | 85.74 | 81.52 | 80.20 | 61.29 | 49.47 | 45.23 | 61.43 | |||||||||||||
| 1976 | 43.90 | 45.90 | 50.55 | 55.73 | 72.26 | 72.97 | 85.81 | 76.48 | 78.50 | 67.55 | 49.70 | 44.32 | 61.97 | |||||||||||||
| 1977 | 35.81 | 48.25 | 50.03 | 67.57 | 58.26 | 80.50 | 84.71 | 89.00 | 71.70 | 62.26 | 46.17 | 44.42 | 61.56 | |||||||||||||
| 1978 | 40.97 | 46.57 | 58.61 | 55.77 | 64.52 | 76.30 | 83.58 | 83.23 | 70.67 | 68.58 | 42.90 | 37.94 | 60.80 | |||||||||||||
| 1979 | 25.13 | 44.71 | 55.87 | 56.10 | 69.71 | 79.63 | 87.35 | 83.03 | 80.27 | d | 64.74 | 42.87 | 47.16 | 61.38 | ||||||||||||
| 1980 | 37.71 | 45.83 | 47.94 | 61.90 | 68.90 | a | 69.30 | 84.48 | 80.39 | 78.07 | 64.81 | 52.43 | 49.29 | 61.75 | ||||||||||||
| 1981 | 42.00 | 48.04 | 53.52 | 60.13 | 65.71 | 74.63 | 85.61 | 92.77 | 79.73 | 61.81 | 52.67 | 44.77 | 63.45 | |||||||||||||
| 1982 | 42.32 | 45.36 | 51.74 | 57.07 | 66.52 | 78.00 | 83.84 | 86.45 | 71.47 | 61.39 | 46.80 | 39.32 | 60.86 | |||||||||||||
| 1983 | 48.61 | 50.39 | 54.39 | 57.50 | 71.61 | 73.40 | 80.16 | 86.77 | 74.53 | 65.58 | 50.50 | 33.19 | 62.22 | |||||||||||||
| 1984 | 44.16 | 48.21 | 55.84 | 54.60 | 65.52 | 70.73 | 88.87 | 87.58 | 75.50 | 57.97 | 47.37 | 38.74 | 61.26 | |||||||||||||
| 1985 | 34.58 | 45.04 | 53.23 | 64.57 | 71.77 | 81.43 | 93.58 | 82.10 | 67.30 | c | 62.84 | 36.97 | 31.81 | 60.43 | ||||||||||||
| 1986 | 48.42 | 48.32 | 58.94 | 59.97 | 69.60 | a | 85.73 | 80.32 | 91.16 | 68.37 | 64.81 | 51.27 | 41.16 | 64.01 | ||||||||||||
| 1987 | 41.58 | 48.04 | 53.06 | 70.30 | 72.84 | 82.86 | a | 80.35 | ----- | z | 82.50 | 73.48 | 53.80 | 40.61 | 63.58 | |||||||||||
| 1988 | 41.00 | 52.83 | 57.26 | 64.87 | 69.42 | 75.80 | 88.16 | 87.94 | 79.37 | 77.16 | 50.07 | 44.00 | 65.66 | |||||||||||||
| 1989 | 44.81 | 36.68 | 52.77 | 65.20 | 66.35 | 81.17 | 86.55 | 80.55 | 78.33 | 65.48 | 54.93 | 46.58 | 63.28 | |||||||||||||
| 1990 | 43.61 | 48.39 | 56.61 | 67.50 | 67.84 | 75.13 | 90.65 | 85.35 | 84.93 | 66.03 | 53.47 | 34.61 | 64.51 | |||||||||||||
| 1991 | 42.29 | 57.29 | 50.23 | 56.83 | 63.00 | 72.07 | 89.90 | 90.10 | 84.33 | 68.35 | 51.00 | 47.32 | 64.39 | |||||||||||||
| 1992 | 46.35 | 53.41 | 60.74 | 65.47 | 77.77 | 85.03 | 84.81 | 89.77 | 77.97 | 69.00 | 47.67 | 39.30 | a | 66.44 | ||||||||||||
| 1993 | 32.29 | 37.46 | 53.87 | 58.30 | 76.10 | 73.80 | 78.74 | 84.58 | 79.23 | 70.23 | 46.93 | 43.74 | 61.27 | |||||||||||||
| 1994 | 49.16 | 45.89 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.53 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 41.77 | 47.01 | 52.92 | 60.66 | 68.78 | 76.96 | 85.99 | 85.07 | 76.58 | 65.48 | 50.14 | 43.07 | 62.81 | |||||||||||||
| S.D. | 5.60 | 4.26 | 3.62 | 4.57 | 4.13 | 4.03 | 3.09 | 3.93 | 4.40 | 4.66 | 5.06 | 4.49 | 1.77 | |||||||||||||
| SKEW | -1.15 | -0.38 | 0.27 | 0.39 | -0.26 | 0.18 | -0.09 | -0.03 | -0.12 | 0.21 | 0.83 | -0.30 | 0.68 | |||||||||||||
| MAX | 51.87 | 57.29 | 63.52 | 72.07 | 77.77 | 85.73 | 93.58 | 92.77 | 84.93 | 77.16 | 66.70 | 53.55 | 67.08 | |||||||||||||
| MIN | 24.19 | 36.68 | 41.94 | 52.29 | 58.26 | 69.30 | 78.74 | 76.48 | 67.30 | 55.97 | 36.97 | 31.81 | 60.18 | |||||||||||||
| NO YRS | 54 | 55 | 52 | 53 | 55 | 52 | 51 | 51 | 55 | 55 | 54 | 54 | 39 | |||||||||||||