| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1911 | ----- | z | ----- | z | ----- | z | 62.43 | 65.52 | 78.33 | 90.90 | 85.16 | 74.12 | v | 64.39 | m | 55.50 | 47.32 | 69.31 | ||||||||
| 1912 | 42.42 | 49.59 | g | 48.00 | b | 63.77 | q | 67.70 | h | 76.57 | i | 79.84 | 77.13 | 67.14 | a | 54.36 | c | 43.85 | d | 42.04 | d | 56.85 | ||||
| 1913 | 39.66 | b | 41.00 | h | 52.19 | e | 63.07 | a | 69.03 | 75.13 | 85.68 | c | 88.58 | g | 79.30 | j | 64.52 | b | 52.17 | a | 37.48 | 59.88 | ||||
| 1914 | 45.87 | 47.25 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.56 | |||
| 1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1916 | ----- | z | ----- | z | 59.41 | i | 68.80 | 64.09 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.80 | ||
| 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 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 | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 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 | 56.54 | r | 61.23 | 70.58 | 78.97 | 92.23 | 91.13 | 77.50 | 68.03 | 50.33 | ----- | z | 73.75 | |||||||||
| 1946 | ----- | z | 53.00 | y | 51.45 | 62.97 | 72.97 | 73.30 | 86.29 | 75.25 | z | 73.73 | 56.87 | 46.03 | 44.45 | 63.12 | ||||||||||
| 1947 | 41.65 | 50.61 | 58.42 | 63.73 | 76.77 | 72.77 | 85.79 | b | 84.68 | 81.27 | 66.74 | 52.33 | 47.90 | 65.22 | ||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.79 | q | 73.89 | c | 63.64 | f | 50.10 | i | 35.38 | b | 54.63 | |
| 1949 | 29.60 | f | 42.00 | q | 50.59 | n | 67.37 | ----- | z | ----- | z | ----- | z | ----- | z | 75.00 | o | ----- | z | 55.00 | g | ----- | z | 67.37 | ||
| 1950 | 28.70 | a | 25.00 | r | 52.00 | p | 57.63 | 67.81 | 74.36 | e | 84.50 | g | 83.61 | ----- | z | 58.32 | 50.03 | 47.04 | f | 60.07 | ||||||
| 1951 | 37.35 | e | 45.29 | 49.03 | 65.67 | 67.71 | 77.23 | 84.19 | 82.00 | 77.70 | 60.18 | c | 46.93 | 37.65 | 60.91 | |||||||||||
| 1952 | 35.29 | 45.66 | 49.52 | 66.27 | 68.68 | 71.00 | c | 84.90 | 82.67 | d | 79.93 | 69.74 | 42.60 | 38.90 | b | 61.26 | ||||||||||
| 1953 | 50.97 | 48.75 | 54.16 | 57.47 | 63.32 | 66.77 | 83.10 | 79.87 | a | 78.93 | 64.23 | 54.77 | d | 46.45 | 62.40 | |||||||||||
| 1954 | 40.71 | 48.32 | 49.42 | 61.86 | a | 69.29 | 69.60 | 81.78 | d | 75.11 | c | 72.17 | 59.35 | 53.28 | a | 43.13 | 60.33 | |||||||||
| 1955 | 42.06 | 45.85 | a | 48.35 | 53.14 | a | 63.94 | 75.53 | 78.00 | 82.26 | 74.13 | 61.96 | g | 46.03 | 41.27 | a | 59.14 | |||||||||
| 1956 | 40.97 | 38.85 | c | 53.79 | c | 64.30 | 70.31 | b | 71.07 | c | 83.39 | 81.29 | 75.70 | 60.24 | b | 46.17 | 45.19 | 60.94 | ||||||||
| 1957 | 28.39 | 46.18 | 51.30 | d | 60.30 | 68.03 | 76.13 | 78.96 | g | 77.82 | c | 77.20 | 56.43 | c | 47.70 | g | 47.55 | 58.93 | ||||||||
| 1958 | 43.94 | 51.61 | 48.78 | d | 58.53 | 76.35 | 75.17 | 85.04 | g | 87.52 | 73.80 | 67.43 | c | 49.77 | 47.28 | b | 61.83 | |||||||||
| 1959 | 43.90 | 43.36 | 54.45 | 62.37 | 64.06 | 77.64 | e | 85.26 | 79.89 | c | 70.60 | e | 64.13 | 51.17 | 42.63 | d | 61.62 | |||||||||
| 1960 | 35.16 | 45.41 | 53.42 | 60.90 | a | 63.97 | a | 77.20 | e | 91.00 | n | 80.35 | 78.41 | a | 65.65 | 48.27 | 39.28 | b | 58.91 | |||||||
| 1961 | 44.77 | 51.72 | c | 52.58 | 59.57 | 65.42 | 81.53 | 86.36 | c | 88.50 | a | 72.18 | b | 61.90 | 46.67 | 41.17 | a | 62.70 | ||||||||
| 1962 | 41.58 | 44.00 | 49.71 | 64.80 | 62.03 | 78.80 | e | 83.00 | 78.39 | 77.10 | 61.16 | 51.13 | 46.00 | 61.48 | ||||||||||||
| 1963 | 38.29 | 53.25 | 53.23 | 54.07 | 67.65 | 72.03 | 78.40 | a | 83.52 | 80.40 | 64.10 | 49.90 | 40.68 | 61.29 | ||||||||||||
| 1964 | 44.55 | 51.45 | 51.03 | 58.43 | 66.32 | 71.60 | 82.65 | 79.68 | 74.37 | 63.42 | 43.53 | 39.29 | 60.53 | |||||||||||||
| 1965 | 40.29 | 51.36 | 54.71 | 62.03 | 65.40 | k | 75.86 | b | 83.84 | 80.84 | 71.93 | 69.03 | 50.53 | 42.64 | f | 64.04 | ||||||||||
| 1966 | 42.52 | 46.79 | 55.29 | 63.73 | 72.16 | 73.93 | c | 81.79 | g | 82.94 | 77.23 | 65.84 | 50.13 | 44.45 | 61.36 | |||||||||||
| 1967 | 47.39 | 52.79 | 50.97 | 53.10 | 71.19 | 78.29 | i | 86.97 | 92.06 | 82.63 | 65.45 | 50.43 | 42.77 | 63.25 | ||||||||||||
| 1968 | 45.13 | 49.76 | 57.19 | 60.10 | 67.48 | 77.07 | 85.90 | 79.10 | 77.23 | ----- | z | 50.47 | 41.86 | i | 64.94 | |||||||||||
| 1969 | 31.29 | 40.43 | 54.35 | 60.37 | 73.10 | 77.33 | ----- | z | ----- | z | 75.33 | 60.74 | 55.07 | 41.77 | 56.98 | |||||||||||
| 1970 | 42.52 | 48.79 | 53.55 | 54.37 | 72.74 | 80.27 | 88.35 | 86.48 | 70.83 | 61.61 | 48.87 | 40.79 | c | 62.43 | ||||||||||||
| 1971 | 47.71 | c | 47.57 | 49.52 | 58.67 | 67.52 | 71.90 | 86.90 | 89.29 | 71.07 | 59.61 | 51.03 | 42.55 | 61.94 | ||||||||||||
| 1972 | 40.77 | 46.76 | 56.32 | 54.90 | 70.48 | 77.77 | 84.65 | 84.97 | 71.43 | 60.65 | 50.30 | 35.35 | 61.20 | |||||||||||||
| 1973 | 38.35 | 46.29 | ----- | z | 60.90 | 70.55 | 75.60 | 86.06 | 81.97 | 73.63 | c | 62.13 | 44.73 | 44.87 | 62.28 | |||||||||||
| 1974 | 35.84 | 49.11 | 51.74 | 57.80 | 64.13 | 82.37 | 82.57 | c | 84.74 | 80.58 | d | 65.35 | 50.00 | 45.38 | e | 62.47 | ||||||||||
| 1975 | 44.55 | 42.29 | 48.42 | 54.30 | 67.94 | 72.67 | 85.16 | 78.94 | 78.97 | 60.61 | 49.30 | 44.48 | 60.63 | |||||||||||||
| 1976 | 45.71 | 45.90 | 51.16 | 56.83 | 69.55 | 72.53 | 83.19 | 78.19 | 78.77 | 66.55 | 51.60 | 45.68 | 62.14 | |||||||||||||
| 1977 | 37.81 | 50.07 | 52.87 | 67.63 | 61.31 | b | 80.03 | 82.45 | 86.52 | 70.60 | 62.77 | 49.08 | f | 40.87 | 62.99 | |||||||||||
| 1978 | 39.77 | 47.75 | 57.68 | 57.33 | 64.52 | 76.33 | 83.55 | 81.00 | 71.40 | 67.39 | 42.97 | ----- | z | 62.70 | ||||||||||||
| 1979 | 25.03 | 43.61 | 56.39 | 58.13 | 70.52 | 78.33 | 85.61 | 82.06 | 79.87 | 64.52 | 42.37 | 47.52 | 61.16 | |||||||||||||
| 1980 | 36.58 | 43.38 | 51.32 | 61.73 | 66.65 | 70.73 | 86.13 | 81.55 | 78.40 | 63.19 | 50.00 | b | 49.42 | g | 62.70 | |||||||||||
| 1981 | 38.94 | 46.14 | 53.26 | 60.13 | 64.68 | 72.80 | 82.90 | 90.13 | 76.72 | l | 61.84 | 50.80 | 41.74 | 60.31 | ||||||||||||
| 1982 | 39.90 | 45.18 | 52.32 | 57.80 | 67.26 | 76.37 | 81.77 | 84.16 | 71.03 | 59.74 | 43.57 | 39.16 | 59.86 | |||||||||||||
| 1983 | 45.55 | 47.68 | 53.39 | 57.50 | 69.45 | 72.48 | i | 78.65 | 85.32 | 73.93 | 64.71 | 49.67 | 29.45 | 59.57 | ||||||||||||
| 1984 | 42.29 | 47.45 | 54.77 | 55.43 | 65.48 | 72.57 | 86.58 | 86.52 | 73.00 | 57.81 | 45.57 | 38.81 | 60.52 | |||||||||||||
| 1985 | 34.65 | 45.43 | 52.84 | 65.33 | 69.23 | 77.73 | 88.74 | 82.29 | 68.33 | 63.68 | 36.93 | 27.97 | 59.43 | |||||||||||||
| 1986 | 43.29 | 45.61 | 58.58 | 59.17 | 69.71 | 83.07 | 80.55 | 90.03 | 69.23 | 65.87 | 49.90 | a | 38.29 | 62.77 | ||||||||||||
| 1987 | 41.10 | 47.11 | a | 54.32 | 67.41 | a | 72.19 | 82.70 | 80.16 | 85.26 | 80.37 | 69.55 | 49.69 | a | 39.53 | a | 64.12 | |||||||||
| 1988 | 38.47 | a | 52.10 | 54.97 | 62.70 | 67.58 | 75.20 | 87.71 | 86.13 | 78.27 | 72.58 | 48.67 | 43.16 | 63.96 | ||||||||||||
| 1989 | 45.97 | 36.25 | 51.39 | 64.03 | 66.87 | 78.27 | 84.19 | 80.90 | 77.93 | 62.48 | 54.30 | 43.81 | 62.20 | |||||||||||||
| 1990 | 44.23 | 46.61 | 56.45 | 67.03 | 65.71 | 76.37 | 88.42 | 84.32 | 82.30 | 62.45 | 52.40 | 36.06 | 63.53 | |||||||||||||
| 1991 | 42.52 | 52.89 | 50.52 | 57.13 | 62.61 | 69.97 | 86.65 | 87.45 | 81.30 | 64.71 | 48.57 | 40.74 | 62.09 | |||||||||||||
| 1992 | 45.84 | 49.10 | 58.23 | 60.80 | 74.87 | 79.50 | 82.94 | 85.84 | 75.43 | 65.29 | 46.70 | 35.90 | 63.37 | |||||||||||||
| 1993 | 31.52 | 35.50 | 51.48 | 57.00 | 71.90 | 72.67 | 74.35 | 81.00 | 75.33 | i | 66.55 | 44.80 | ----- | z | 58.68 | |||||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 40.45 | 46.83 | 52.89 | 60.56 | 68.27 | 75.62 | 84.24 | 83.42 | 75.59 | 63.39 | 48.75 | 41.41 | 61.87 | |||||||||||||
| S.D. | 5.35 | 4.01 | 2.86 | 4.07 | 3.62 | 3.70 | 3.44 | 3.89 | 4.01 | 3.76 | 3.78 | 4.49 | 1.35 | |||||||||||||
| SKEW | -0.86 | -0.79 | 0.24 | 0.10 | 0.27 | -0.02 | -0.37 | 0.23 | -0.13 | -0.06 | -0.67 | -0.89 | 0.53 | |||||||||||||
| MAX | 50.97 | 53.25 | 58.58 | 68.80 | 76.77 | 83.07 | 92.23 | 92.06 | 82.63 | 72.58 | 55.50 | 47.90 | 65.22 | |||||||||||||
| MIN | 25.03 | 35.50 | 48.00 | 53.10 | 61.31 | 66.77 | 74.35 | 75.11 | 67.14 | 54.36 | 36.93 | 27.97 | 59.43 | |||||||||||||
| NO YRS | 48 | 45 | 46 | 51 | 48 | 47 | 44 | 47 | 46 | 47 | 48 | 44 | 28 | |||||||||||||