| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.10 | 69.00 | 57.26 | 30.80 | 21.60 | f | 58.54 | |||||
| 1949 | 18.84 | f | 26.56 | c | 36.15 | e | 52.61 | b | 59.43 | a | 66.80 | 78.61 | 79.65 | n | 69.17 | 47.84 | f | 45.17 | 26.97 | 51.27 | ||||||
| 1950 | 22.26 | h | 34.50 | l | 36.58 | g | 45.97 | 52.43 | c | 65.96 | c | 73.84 | 75.90 | 63.66 | a | 54.62 | b | 35.90 | a | 32.32 | 55.62 | |||||
| 1951 | 24.32 | 32.36 | 29.50 | o | 49.79 | p | 61.00 | h | 60.73 | 78.48 | 71.52 | 65.07 | b | 46.87 | 34.13 | 23.26 | 48.53 | |||||||||
| 1952 | 23.61 | 29.38 | 33.47 | a | 52.80 | 57.61 | 69.87 | 76.55 | 76.77 | 72.55 | a | 62.45 | 34.41 | a | 27.16 | 51.39 | ||||||||||
| 1953 | 33.33 | m | 31.11 | a | 40.19 | 43.63 | 51.94 | 68.70 | 82.26 | 78.16 | 71.43 | 60.13 | a | 41.83 | 26.52 | 54.17 | ||||||||||
| 1954 | 27.94 | 37.21 | 34.74 | 47.63 | 60.71 | 62.67 | 80.35 | 75.32 | 68.75 | b | 53.65 | 44.40 | 26.10 | 51.62 | ||||||||||||
| 1955 | 21.13 | 25.86 | 30.55 | 42.70 | 57.13 | a | 65.20 | 77.30 | a | 79.06 | 66.23 | 55.39 | 30.00 | 26.94 | 48.12 | |||||||||||
| 1956 | 26.42 | 25.48 | 35.39 | 48.40 | 59.81 | 71.28 | a | 79.26 | 75.23 | 69.33 | 52.32 | 35.50 | 28.97 | 50.61 | ||||||||||||
| 1957 | 20.45 | 34.46 | 38.10 | 46.40 | 58.65 | 65.57 | 77.94 | 77.77 | 66.63 | 50.65 | 39.46 | q | ----- | z | 53.66 | |||||||||||
| 1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1969 | 25.77 | 27.11 | 33.45 | 48.57 | 63.03 | 65.20 | 78.16 | 81.26 | 70.70 | 46.97 | 40.17 | 28.35 | 50.73 | |||||||||||||
| 1970 | 25.23 | 35.32 | 34.81 | 40.05 | i | 56.16 | 69.93 | 79.10 | 81.87 | 61.60 | 47.74 | 36.17 | 24.55 | 50.22 | ||||||||||||
| 1971 | 24.97 | 29.86 | 31.19 | 43.85 | j | 59.29 | 67.80 | 78.55 | 84.35 | 61.63 | 49.71 | 36.63 | 22.48 | 49.68 | ||||||||||||
| 1972 | 23.48 | 30.31 | 40.48 | 45.30 | 59.26 | 68.73 | 76.42 | 77.94 | 61.20 | 52.55 | 34.47 | 21.94 | 49.34 | |||||||||||||
| 1973 | 24.74 | 32.79 | 37.10 | 42.52 | g | 59.87 | 68.30 | 78.29 | 77.61 | ----- | z | 54.71 | 33.00 | f | 29.13 | 51.39 | ||||||||||
| 1974 | 24.13 | 30.92 | c | 34.26 | 42.89 | c | 53.65 | k | 73.87 | 82.35 | 75.58 | 70.67 | 61.26 | 35.97 | 25.84 | 50.70 | ||||||||||
| 1975 | 23.03 | 28.46 | 33.32 | 37.70 | c | 49.55 | 64.70 | 78.29 | 71.48 | 67.47 | 48.26 | 32.87 | 30.48 | 47.14 | ||||||||||||
| 1976 | 25.74 | 29.76 | 34.32 | 46.21 | b | 58.93 | c | 65.67 | c | 79.23 | 71.81 | d | 67.37 | 52.64 | c | 39.93 | b | 29.45 | 50.09 | |||||||
| 1977 | 25.84 | 36.71 | 34.35 | 54.40 | e | 55.12 | e | 73.17 | 76.74 | 73.10 | 61.90 | a | 54.32 | 36.54 | b | 28.50 | a | 50.89 | ||||||||
| 1978 | 26.71 | 30.39 | 41.61 | 46.23 | 53.30 | a | 67.83 | 77.43 | c | 73.71 | 62.55 | a | 56.30 | a | 35.33 | 17.97 | a | 49.11 | ||||||||
| 1979 | 16.71 | 28.36 | 37.74 | 44.10 | 56.70 | a | 68.85 | c | 79.27 | a | 74.90 | 73.63 | 55.30 | d | 32.63 | 32.68 | 50.07 | |||||||||
| 1980 | 25.16 | 34.90 | 35.81 | 50.20 | 57.03 | a | 66.63 | 75.32 | 69.97 | 64.11 | b | 53.13 | 38.90 | 34.87 | 50.50 | |||||||||||
| 1981 | 35.68 | 32.93 | 43.52 | 48.80 | 53.32 | 63.73 | 76.26 | 81.48 | 71.50 | 46.81 | 39.93 | 29.29 | 51.94 | |||||||||||||
| 1982 | 22.61 | 27.79 | 36.35 | 40.17 | 52.29 | 65.53 | 72.26 | 79.57 | c | 64.17 | f | 45.58 | 31.70 | 27.79 | b | 45.60 | ||||||||||
| 1983 | 30.13 | 32.39 | 38.48 | 42.07 | 53.19 | 62.73 | 75.35 | 76.16 | 64.83 | 53.58 | 33.10 | 20.71 | 48.56 | |||||||||||||
| 1984 | 24.45 | 32.48 | 36.77 | ----- | z | 54.58 | 62.60 | 76.06 | 75.03 | 60.31 | a | 45.74 | 33.43 | b | 23.19 | 47.70 | ||||||||||
| 1985 | 24.87 | 24.64 | 34.10 | 49.77 | 60.48 | 69.87 | 79.10 | 73.32 | ----- | z | ----- | z | ----- | z | ----- | z | 52.02 | |||||||||
| 1986 | 30.77 | 31.29 | 42.90 | 45.38 | a | 56.90 | 74.10 | 71.23 | 76.72 | b | 57.53 | ----- | z | 34.87 | 27.32 | 49.91 | ||||||||||
| 1987 | 26.61 | 35.79 | ----- | z | 59.10 | 63.07 | a | 71.23 | 72.84 | 73.81 | 73.30 | 60.55 | 37.30 | 26.48 | 54.55 | |||||||||||
| 1988 | 25.13 | a | 32.83 | 35.97 | 50.23 | 62.16 | 77.77 | 83.26 | 78.90 | 65.27 | 63.48 | 31.90 | 24.48 | 52.62 | ||||||||||||
| 1989 | 25.81 | 27.07 | 39.45 | 48.20 | 57.29 | 69.20 | 82.03 | 74.77 | 68.03 | 51.61 | 37.07 | 27.45 | 50.67 | |||||||||||||
| 1990 | 31.03 | 28.93 | 43.32 | 52.13 | 53.52 | 69.13 | 78.97 | 76.71 | 75.30 | 48.94 | 39.07 | 19.13 | 51.35 | |||||||||||||
| 1991 | 24.55 | 39.43 | 36.10 | 43.47 | 54.00 | 69.10 | 78.68 | 79.48 | 66.40 | 52.74 | 32.67 | 26.74 | 50.28 | |||||||||||||
| 1992 | 28.65 | 38.03 | 47.29 | 51.97 | 65.42 | 68.23 | 70.42 | 77.45 | 64.53 | 56.19 | 30.83 | 23.52 | 51.88 | |||||||||||||
| 1993 | 23.94 | 28.32 | 39.77 | 43.07 | 60.26 | 63.30 | 64.74 | 71.45 | 65.40 | 50.26 | 32.80 | 27.84 | 47.60 | |||||||||||||
| 1994 | 30.39 | 29.93 | 42.39 | 49.90 | 62.90 | 69.90 | 79.84 | 81.84 | 72.63 | 49.45 | 29.27 | 27.42 | 52.15 | |||||||||||||
| 1995 | 25.81 | 35.86 | 35.61 | 44.20 | 52.97 | 63.83 | 73.55 | 76.00 | 67.50 | 47.74 | 38.30 | 30.26 | 49.30 | |||||||||||||
| 1996 | 26.00 | 29.69 | 37.06 | 44.93 | 51.39 | 70.11 | b | 79.71 | 78.52 | 62.60 | 52.58 | 37.73 | 25.77 | 49.67 | ||||||||||||
| 1997 | 25.52 | 27.93 | 36.19 | 40.57 | 56.48 | 70.03 | 73.29 | 75.39 | ----- | z | 51.52 | 38.23 | 24.65 | 47.25 | ||||||||||||
| 1998 | 29.71 | 32.39 | 37.35 | 47.03 | 58.74 | 58.53 | 76.68 | 68.84 | 70.90 | 53.45 | 35.43 | 25.13 | a | 49.52 | ||||||||||||
| 1999 | 26.84 | 28.25 | 41.26 | 42.70 | 51.74 | 63.80 | 75.39 | 76.52 | 64.03 | 56.68 | 46.60 | 28.19 | 50.17 | |||||||||||||
| 2000 | 27.03 | 34.72 | 40.10 | 49.80 | 56.16 | 66.77 | 78.74 | 78.26 | 64.50 | 51.23 | 28.97 | 26.32 | 50.22 | |||||||||||||
| 2001 | 27.52 | 27.25 | 41.29 | 44.58 | d | 61.00 | 66.63 | 78.42 | 81.39 | 70.07 | 51.23 | 41.53 | 24.29 | 51.27 | ||||||||||||
| 2002 | 23.35 | 28.71 | 33.03 | 45.33 | 54.74 | 67.70 | 81.19 | 74.07 | a | 65.40 | 47.71 | 33.17 | 28.03 | 48.54 | ||||||||||||
| 2003 | 31.13 | ----- | z | ----- | z | 49.18 | m | 56.71 | 67.23 | 83.55 | 79.97 | 64.30 | 58.71 | 27.90 | 28.32 | 55.31 | ||||||||||
| 2004 | 25.87 | 30.66 | 44.81 | 50.97 | 53.87 | 65.63 | 75.06 | 72.39 | 62.10 | 50.03 | 38.10 | 27.13 | 49.72 | |||||||||||||
| 2005 | 29.16 | 32.86 | 38.39 | 46.31 | q | 54.81 | 61.73 | 77.16 | 74.35 | 62.67 | 53.16 | 35.92 | e | 23.77 | 49.45 | |||||||||||
| 2006 | 25.77 | 26.96 | 36.03 | a | 47.92 | e | 59.00 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.14 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 25.99 | 30.99 | 37.55 | 46.95 | 56.95 | 67.30 | 77.34 | 76.37 | 66.60 | 52.85 | 35.85 | 26.54 | 50.17 | |||||||||||||
| S.D. | 3.22 | 3.58 | 3.75 | 4.29 | 3.69 | 3.73 | 3.55 | 3.42 | 4.14 | 4.52 | 4.26 | 3.34 | 1.37 | |||||||||||||
| SKEW | 0.23 | 0.42 | 0.50 | 0.38 | 0.15 | 0.23 | -1.01 | 0.04 | 0.14 | 0.49 | 0.46 | -0.21 | -0.32 | |||||||||||||
| MAX | 35.68 | 39.43 | 47.29 | 59.10 | 65.42 | 77.77 | 83.55 | 84.35 | 75.30 | 63.48 | 46.60 | 34.87 | 52.62 | |||||||||||||
| MIN | 16.71 | 24.64 | 30.55 | 37.70 | 49.55 | 58.53 | 64.74 | 68.84 | 57.53 | 45.58 | 27.90 | 17.97 | 47.14 | |||||||||||||
| NO YRS | 44 | 45 | 43 | 40 | 45 | 46 | 46 | 46 | 43 | 44 | 44 | 44 | 29 | |||||||||||||