| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.42 | 49.63 | 48.35 | 54.80 | ||||
| 1939 | 47.74 | 49.14 | 64.16 | 74.80 | 74.87 | 78.80 | 89.71 | 92.35 | 85.50 | 69.26 | 54.43 | 51.06 | 69.32 | |||||||||||||
| 1940 | 48.48 | 53.52 | 61.90 | 67.83 | 76.19 | 86.10 | 84.65 | 91.17 | h | 78.37 | ----- | z | 53.47 | 49.32 | 65.98 | |||||||||||
| 1941 | 50.32 | 56.82 | 65.81 | 69.93 | 73.19 | ----- | z | 93.79 | l | 84.97 | 76.07 | 66.94 | 56.67 | 50.48 | 65.12 | |||||||||||
| 1942 | 48.23 | 53.68 | 60.94 | 64.40 | 68.77 | 78.00 | 89.45 | 92.26 | 83.77 | 70.26 | 53.33 | 49.87 | 67.75 | |||||||||||||
| 1943 | 45.39 | 55.71 | 61.68 | 67.27 | 73.74 | 76.30 | 87.94 | 85.29 | 89.80 | 65.71 | 54.77 | 47.94 | 67.63 | |||||||||||||
| 1944 | 48.00 | 51.17 | 61.00 | 60.57 | 73.23 | 77.23 | 89.90 | 90.35 | 86.03 | 71.32 | 50.77 | 48.00 | 67.30 | |||||||||||||
| 1945 | 48.29 | ----- | z | 54.06 | 64.21 | f | 71.71 | 83.53 | 94.31 | b | 91.06 | 86.40 | e | 67.65 | 51.73 | 48.55 | 69.73 | |||||||||
| 1946 | 46.81 | 50.43 | 55.97 | 67.17 | 77.65 | 76.50 | 89.00 | 90.48 | 80.23 | 61.77 | 50.47 | 47.23 | 66.14 | |||||||||||||
| 1947 | 42.71 | 56.50 | 62.10 | 69.37 | 79.71 | 74.60 | 81.06 | 82.87 | 80.97 | 63.13 | 52.50 | 47.61 | 66.09 | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.90 | 82.29 | 78.23 | 63.58 | 50.90 | 41.90 | 66.80 | |||||||
| 1949 | 38.87 | 47.21 | 54.29 | 69.93 | 73.71 | 84.57 | 88.39 | 85.03 | 81.10 | 61.74 | 55.70 | 45.58 | 65.51 | |||||||||||||
| 1950 | 39.74 | 49.63 | a | 54.26 | 64.40 | 74.13 | 79.47 | 89.90 | 91.42 | 80.23 | 61.87 | 55.10 | 52.28 | b | 66.04 | |||||||||||
| 1951 | 46.94 | 51.16 | i | 55.87 | 71.43 | 72.19 | 86.60 | 88.50 | a | 89.32 | 88.73 | 64.48 | 55.97 | 46.68 | 69.70 | |||||||||||
| 1952 | 43.10 | 52.03 | 54.07 | a | 70.77 | 74.45 | 74.17 | 92.80 | a | 89.55 | 88.48 | a | 79.00 | 54.17 | a | 48.52 | 68.43 | |||||||||
| 1953 | 52.80 | a | 56.32 | 56.97 | 64.67 | 65.45 | 70.60 | 88.84 | 83.94 | 85.37 | 67.33 | y | 57.88 | f | 50.26 | d | 67.52 | |||||||||
| 1954 | 48.93 | a | 57.83 | d | 59.86 | b | 69.12 | f | 75.48 | f | 71.78 | c | 83.97 | 86.00 | s | 76.62 | n | 66.29 | 57.13 | 48.13 | 61.74 | |||||
| 1955 | 46.90 | 51.64 | 56.90 | 55.60 | 70.42 | 80.30 | 82.61 | 91.60 | a | 84.62 | i | ----- | z | ----- | z | ----- | z | 67.00 | ||||||||
| 1956 | ----- | z | 42.86 | o | 56.16 | 70.73 | 74.71 | 77.28 | a | 91.00 | 87.74 | 83.97 | 67.94 | 54.93 | 48.35 | 71.28 | ||||||||||
| 1957 | 44.48 | 56.18 | 57.77 | 67.47 | 72.48 | 81.13 | 84.68 | 83.26 | 85.57 | 64.32 | 54.97 | 50.77 | 66.92 | |||||||||||||
| 1958 | 49.00 | z | ----- | z | ----- | z | 65.50 | b | 79.13 | 77.83 | 91.48 | 94.90 | 81.93 | 74.16 | 58.93 | 55.94 | 75.53 | |||||||||
| 1959 | 52.68 | 53.39 | 62.61 | 71.30 | 71.03 | 78.43 | 90.84 | 88.74 | 76.00 | 69.19 | 57.77 | 49.52 | 68.46 | |||||||||||||
| 1960 | 47.19 | 55.45 | 62.29 | 63.77 | 67.23 | 84.63 | 90.84 | 86.06 | 86.67 | 69.55 | 55.63 | 49.13 | 68.20 | |||||||||||||
| 1961 | 53.90 | 54.25 | 56.26 | 66.17 | 66.06 | 83.30 | 88.19 | 91.23 | 80.53 | 68.55 | 54.70 | 48.35 | 67.62 | |||||||||||||
| 1962 | 48.35 | 51.46 | 56.39 | 69.77 | 66.16 | 79.87 | 88.42 | 83.71 | 83.80 | 68.03 | 58.40 | e | 53.16 | 67.29 | ||||||||||||
| 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 85.91 | h | 89.26 | 95.77 | 88.60 | 67.87 | 57.77 | 47.39 | 74.44 | |||||||
| 1968 | 48.19 | 59.93 | 61.94 | 66.47 | 71.61 | 80.97 | 88.65 | 81.45 | 81.77 | 66.16 | 55.03 | 46.94 | 67.42 | |||||||||||||
| 1969 | 43.35 | 47.07 | 62.42 | 61.70 | 73.00 | w | 78.57 | 84.61 | 86.06 | 80.63 | 65.77 | 58.40 | 51.19 | 65.44 | ||||||||||||
| 1970 | 51.52 | 58.54 | 60.52 | 60.07 | 73.48 | 81.67 | 88.97 | 87.71 | 80.47 | 64.77 | i | 55.70 | 47.45 | 67.83 | ||||||||||||
| 1971 | 49.32 | 52.29 | 54.19 | 60.57 | 69.16 | 74.23 | 85.06 | 85.16 | 77.43 | 65.35 | 54.43 | 45.48 | 64.39 | |||||||||||||
| 1972 | 47.52 | 52.93 | 61.90 | 60.87 | 75.55 | 82.13 | 90.94 | 90.00 | 81.00 | 70.71 | 55.00 | 45.06 | 67.80 | |||||||||||||
| 1973 | 48.03 | 56.68 | 55.45 | 68.30 | 76.13 | 80.87 | 89.68 | 86.03 | 81.97 | 67.39 | 50.83 | 51.90 | 67.77 | |||||||||||||
| 1974 | 49.10 | 52.43 | 58.74 | 63.87 | 69.68 | 81.07 | 85.68 | 88.74 | 92.73 | 76.16 | 57.83 | 49.68 | 68.81 | |||||||||||||
| 1975 | 50.65 | 49.64 | 55.23 | 59.53 | 74.32 | 78.37 | 86.06 | 83.52 | 89.50 | 63.90 | 53.23 | 50.71 | 66.22 | |||||||||||||
| 1976 | 51.16 | 53.90 | 57.52 | 61.90 | 75.55 | 76.13 | 85.71 | 81.45 | 83.23 | 75.03 | 60.07 | 49.81 | 67.62 | |||||||||||||
| 1977 | 50.74 | 59.36 | 56.42 | 70.47 | 65.55 | 83.30 | 85.90 | 89.23 | 76.63 | k | 68.55 | 53.93 | 51.58 | 66.82 | ||||||||||||
| 1978 | 52.39 | 55.00 | 64.52 | 60.47 | 70.61 | 79.73 | 87.74 | 84.97 | 72.53 | 74.10 | 54.83 | 46.87 | 66.98 | |||||||||||||
| 1979 | 47.50 | a | 49.25 | 62.87 | 62.57 | 73.68 | 81.47 | 86.94 | 83.13 | 82.13 | 72.10 | 53.77 | 51.73 | a | 67.26 | |||||||||||
| 1980 | 50.13 | 56.97 | 56.77 | 64.87 | 69.77 | 71.13 | 86.06 | 85.13 | 83.17 | 72.03 | 56.70 | 51.77 | 67.04 | |||||||||||||
| 1981 | 53.20 | a | 55.82 | 59.35 | 65.17 | 69.68 | 77.07 | 86.19 | 90.06 | 82.73 | 65.23 | 55.53 | 50.74 | 67.56 | ||||||||||||
| 1982 | 46.42 | 53.61 | 55.00 | 60.97 | 75.10 | 79.43 | 82.81 | 87.19 | 79.87 | 66.26 | 53.40 | 48.65 | 65.72 | |||||||||||||
| 1983 | 49.77 | 52.71 | 56.61 | 61.90 | 73.52 | 75.53 | 77.94 | 82.10 | 78.47 | 69.87 | 53.53 | 47.90 | 64.99 | |||||||||||||
| 1984 | 51.84 | 52.41 | ----- | z | 59.23 | 70.00 | 75.03 | 88.94 | 86.81 | 82.47 | 62.57 | a | 51.10 | 45.45 | 65.99 | |||||||||||
| 1985 | 49.23 | 54.71 | 56.48 | 68.27 | 70.71 | 81.07 | 90.61 | 86.42 | 77.17 | 65.63 | a | 44.67 | z | 46.00 | n | 70.03 | ||||||||||
| 1986 | 52.29 | 54.39 | 65.23 | 65.93 | a | 71.32 | 83.77 | ----- | z | 92.26 | 77.27 | 71.26 | 59.27 | 51.10 | 67.64 | |||||||||||
| 1987 | 50.10 | 56.04 | 59.16 | 75.14 | b | 77.90 | ----- | z | 84.45 | 94.03 | 84.67 | ----- | z | 59.20 | 55.13 | 69.58 | ||||||||||
| 1988 | 52.68 | 60.62 | 64.19 | 68.97 | 71.52 | 78.90 | 91.19 | 92.26 | 88.10 | 81.45 | 54.48 | a | 48.45 | 71.07 | ||||||||||||
| 1989 | 49.35 | 48.93 | 57.42 | 72.70 | 74.32 | 82.60 | 83.42 | 86.74 | 88.53 | 73.68 | 57.30 | 52.35 | 68.95 | |||||||||||||
| 1990 | 49.61 | 52.89 | 63.61 | 69.97 | 72.19 | 81.00 | 93.03 | 88.13 | 86.07 | 65.55 | ----- | z | ----- | z | 72.21 | |||||||||||
| 1991 | ----- | z | 63.25 | 57.23 | 64.43 | 69.42 | 77.30 | 91.71 | 89.90 | 95.47 | 74.55 | 59.23 | ----- | z | 74.25 | |||||||||||
| 1992 | 52.19 | 59.03 | 65.84 | 62.83 | 85.81 | 86.97 | 81.58 | 95.71 | ----- | z | ----- | z | ----- | z | 42.68 | 70.29 | ||||||||||
| 1993 | ----- | z | ----- | z | ----- | z | ----- | z | 58.32 | 71.44 | l | 82.23 | 78.42 | 92.00 | 73.81 | 52.03 | 45.71 | 68.93 | ||||||||
| 1994 | 44.29 | 56.89 | 52.87 | 61.23 | 71.74 | 68.63 | 95.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.40 | ||||||||
| 1995 | 57.55 | 54.68 | 52.45 | 64.07 | ----- | z | 75.17 | 87.23 | 84.06 | 84.90 | 65.06 | 54.57 | 51.03 | 66.43 | ||||||||||||
| 1996 | 47.48 | 44.21 | 60.48 | 52.77 | 59.00 | a | 77.13 | 93.10 | 96.74 | ----- | z | 63.06 | 54.10 | 52.68 | 63.71 | |||||||||||
| 1997 | 52.06 | 52.29 | 60.00 | 57.50 | 76.42 | 73.23 | 88.55 | 83.74 | 76.80 | 61.74 | 55.40 | 46.52 | 65.35 | |||||||||||||
| 1998 | 50.65 | 50.71 | 59.19 | 65.47 | 65.65 | 80.57 | 90.26 | 93.39 | 87.03 | 65.73 | a | 53.70 | 45.48 | 67.32 | ||||||||||||
| 1999 | 50.23 | 49.86 | 54.32 | 64.77 | 71.06 | 82.83 | 89.42 | 84.97 | 93.27 | 72.65 | 54.57 | 49.61 | 68.13 | |||||||||||||
| 2000 | 48.03 | 53.48 | 57.32 | 71.63 | 67.32 | 84.77 | 87.19 | 89.16 | 87.13 | 68.29 | 52.07 | 49.45 | 67.99 | |||||||||||||
| 2001 | 49.35 | 53.89 | 61.35 | 62.00 | 82.61 | 77.30 | 87.58 | 88.10 | 85.70 | 68.29 | 56.37 | 49.58 | 68.51 | |||||||||||||
| 2002 | 48.42 | 55.71 | 58.74 | 68.30 | 70.87 | a | 82.67 | 93.68 | 93.52 | 90.03 | 73.52 | 56.76 | a | 51.48 | 70.31 | |||||||||||
| 2003 | 54.39 | 57.07 | 59.87 | 57.13 | 70.03 | 88.67 | 92.26 | 91.65 | 80.30 | ----- | z | 51.60 | ----- | z | 70.30 | |||||||||||
| 2004 | 51.10 | 52.64 | a | 68.06 | 70.54 | b | 74.52 | 79.60 | 88.61 | 93.13 | 81.90 | 70.39 | 53.07 | 51.00 | 69.55 | |||||||||||
| 2005 | 49.61 | 56.25 | 62.74 | 62.23 | 71.65 | 76.60 | 90.81 | 92.81 | 82.80 | 65.58 | ----- | z | 49.61 | 69.15 | ||||||||||||
| 2006 | 52.32 | 55.64 | 53.39 | ----- | z | ----- | z | 84.37 | ----- | z | 91.03 | 87.57 | 70.61 | 53.37 | 51.45 | 66.64 | ||||||||||
| 2007 | 45.68 | 47.75 | 65.20 | a | 67.17 | ----- | z | 80.33 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.23 | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 48.94 | 53.83 | 59.10 | 65.34 | 72.10 | 79.35 | 88.03 | 88.18 | 83.67 | 68.44 | 54.83 | 49.16 | 67.49 | |||||||||||||
| S.D. | 3.41 | 3.64 | 3.83 | 4.76 | 4.74 | 4.20 | 3.53 | 4.17 | 4.79 | 4.42 | 2.49 | 2.69 | 1.44 | |||||||||||||
| SKEW | -0.57 | -0.10 | 0.25 | -0.20 | -0.20 | -0.21 | -0.41 | -0.01 | 0.18 | 0.65 | 0.08 | -0.19 | 0.09 | |||||||||||||
| MAX | 57.55 | 63.25 | 68.06 | 75.14 | 85.81 | 88.67 | 95.13 | 96.74 | 95.47 | 81.45 | 60.07 | 55.94 | 71.07 | |||||||||||||
| MIN | 38.87 | 44.21 | 52.45 | 52.77 | 58.32 | 68.63 | 77.94 | 78.42 | 72.53 | 61.74 | 49.63 | 41.90 | 64.39 | |||||||||||||
| NO YRS | 59 | 58 | 60 | 59 | 58 | 60 | 61 | 61 | 58 | 57 | 58 | 59 | 36 | |||||||||||||