| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 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 | 44.71 | 49.96 | 51.19 | 60.03 | 57.94 | 69.77 | 75.61 | 73.29 | 71.80 | 60.61 | 52.13 | 47.03 | 59.51 | |||||||||||||
| 1963 | 38.32 | 55.25 | 51.71 | 55.03 | 67.06 | 66.43 | 70.58 | 73.58 | 73.80 | 60.35 | 50.50 | 45.77 | 59.03 | |||||||||||||
| 1964 | 45.19 | 49.24 | 50.71 | 54.37 | 62.32 | ----- | z | ----- | z | 71.03 | 67.10 | 62.87 | 46.27 | 39.97 | 54.91 | |||||||||||
| 1965 | 44.48 | 48.50 | 58.10 | 59.40 | 61.87 | 71.47 | ----- | z | 78.35 | 72.13 | 68.13 | 54.30 | 44.03 | 60.07 | ||||||||||||
| 1966 | 43.97 | 49.32 | 54.74 | 63.23 | 69.61 | 70.87 | 76.19 | 79.65 | 75.30 | 63.84 | 53.93 | 46.97 | 62.30 | |||||||||||||
| 1967 | 46.42 | 50.61 | 50.16 | 57.27 | 68.00 | 77.37 | 80.35 | 87.97 | 80.77 | 62.52 | 53.10 | 44.97 | 63.29 | |||||||||||||
| 1968 | 46.03 | 57.38 | 57.32 | 59.37 | 66.45 | 71.23 | 81.35 | 74.65 | 72.03 | 60.58 | 51.90 | 42.00 | 61.69 | |||||||||||||
| 1969 | 36.55 | 47.32 | 58.35 | 59.63 | 71.35 | 75.67 | 77.71 | 75.42 | 71.63 | 62.19 | 52.60 | 47.52 | 61.33 | |||||||||||||
| 1970 | 45.45 | 56.21 | 57.10 | 56.60 | 68.16 | 76.60 | 80.71 | 81.00 | 69.40 | 61.61 | 52.47 | 43.77 | 62.42 | |||||||||||||
| 1971 | 44.19 | 49.46 | 49.39 | 60.33 | 68.61 | 66.43 | 79.87 | 82.42 | 71.00 | 59.48 | 50.27 | 41.71 | 60.26 | |||||||||||||
| 1972 | 41.61 | 48.72 | 55.77 | 55.63 | 71.19 | 71.20 | 79.58 | 81.84 | 70.40 | 62.00 | 51.17 | ----- | z | 62.65 | ||||||||||||
| 1973 | 44.45 | 53.04 | 54.58 | 62.07 | 69.77 | 70.70 | 79.61 | 74.71 | 74.80 | 60.26 | 47.27 | 48.10 | 61.61 | |||||||||||||
| 1974 | 43.58 | 47.50 | 54.06 | 57.90 | 62.13 | 74.77 | 76.10 | 79.48 | 80.57 | 67.74 | 52.93 | 48.06 | 62.07 | |||||||||||||
| 1975 | 44.45 | 48.21 | 51.10 | 55.80 | 67.61 | 70.27 | 78.26 | 73.00 | 77.13 | 58.29 | 50.77 | 45.26 | 60.01 | |||||||||||||
| 1976 | 47.06 | 48.00 | 51.77 | 59.57 | 68.77 | 69.77 | 76.94 | 72.55 | 74.50 | 63.26 | 52.53 | 46.55 | 60.94 | |||||||||||||
| 1977 | 43.58 | 55.32 | 51.65 | 65.17 | 61.39 | 75.23 | 76.42 | 84.19 | 68.27 | 62.32 | 49.30 | 46.03 | 61.57 | |||||||||||||
| 1978 | 47.84 | 52.29 | 58.61 | 59.27 | 64.61 | 76.57 | 78.94 | 77.26 | 66.93 | 66.19 | 46.17 | 40.74 | 61.28 | |||||||||||||
| 1979 | 38.77 | 45.96 | 59.23 | 59.53 | 68.80 | a | 73.73 | 80.55 | 76.90 | 74.00 | 64.26 | 51.20 | 48.52 | 61.79 | ||||||||||||
| 1980 | 41.29 | 49.45 | 52.23 | 64.33 | 65.57 | a | 66.30 | 77.42 | 75.00 | 73.10 | 66.16 | 51.93 | 48.61 | 60.95 | ||||||||||||
| 1981 | 49.71 | 51.61 | 60.32 | 60.40 | 64.74 | 69.73 | 79.61 | h | 84.88 | f | 74.71 | f | 61.13 | 54.40 | 46.21 | b | 57.58 | |||||||||
| 1982 | 42.81 | 49.07 | 54.65 | 58.53 | 68.77 | 77.70 | 74.64 | q | 77.75 | k | 70.25 | j | 62.68 | l | 48.85 | j | 44.45 | i | 58.59 | |||||||
| 1983 | 48.65 | 54.14 | 57.00 | 63.43 | 69.00 | i | 69.03 | 74.48 | 78.39 | 71.60 | 62.71 | 51.73 | 39.81 | 61.00 | ||||||||||||
| 1984 | 47.97 | 51.38 | 57.87 | 58.94 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.41 | ||||
| 1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.32 | 42.70 | 41.81 | 47.94 | ||||
| 1986 | 49.74 | 49.86 | 60.39 | 60.20 | 66.97 | 76.50 | 73.48 | 85.03 | 70.90 | 66.13 | 50.13 | 45.19 | 62.88 | |||||||||||||
| 1987 | 45.77 | 52.54 | 57.13 | 65.40 | 69.61 | 77.73 | 77.39 | 82.03 | 79.00 | 71.00 | 53.87 | 43.26 | 64.56 | |||||||||||||
| 1988 | 44.13 | a | 52.26 | b | 56.55 | 62.30 | 67.16 | 72.53 | 79.58 | 79.90 | 75.90 | 64.61 | 50.97 | 46.77 | 62.72 | |||||||||||
| 1989 | 45.87 | 43.89 | 51.68 | 65.57 | 67.19 | 75.67 | 75.13 | 77.16 | 78.73 | d | 63.23 | 52.70 | 46.16 | 61.91 | ||||||||||||
| 1990 | 46.65 | 46.96 | 58.71 | 63.53 | 65.19 | 72.00 | 83.13 | h | 81.61 | 76.77 | 60.39 | 51.04 | b | 38.90 | 60.16 | |||||||||||
| 1991 | 45.42 | 56.54 | 54.10 | 59.63 | 62.61 | 68.00 | 81.42 | 81.26 | 78.80 | 66.26 | 51.53 | 45.81 | 62.61 | |||||||||||||
| 1992 | 48.13 | 56.62 | 62.81 | 63.13 | 73.81 | 76.29 | b | 80.52 | 83.68 | 73.47 | 64.10 | 49.83 | 42.81 | 64.60 | ||||||||||||
| 1993 | 42.42 | 51.48 | e | 57.74 | 58.80 | 71.94 | 71.17 | 70.61 | 77.26 | 77.87 | 65.04 | d | 48.10 | a | 43.90 | b | 61.36 | |||||||||
| 1994 | 49.32 | 45.93 | a | 60.58 | ----- | z | 69.37 | d | 71.23 | 82.03 | 79.53 | a | 77.11 | b | 62.34 | b | 46.53 | 45.55 | 62.68 | |||||||
| 1995 | 50.48 | 53.04 | 56.76 | b | 61.30 | 71.42 | 73.03 | 80.32 | 76.35 | 77.17 | 61.39 | 54.57 | 47.18 | c | 63.58 | |||||||||||
| 1996 | 46.10 | 50.90 | 58.03 | 61.43 | 63.87 | 72.14 | a | 81.84 | 81.65 | 70.10 | 61.00 | 50.43 | 45.48 | 61.91 | ||||||||||||
| 1997 | 46.06 | 51.43 | 54.00 | 59.77 | 71.61 | 71.07 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.99 | |||||||
| 1998 | ----- | z | 52.57 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.23 | 44.61 | 49.81 | ||||
| 1999 | 46.10 | 48.25 | 52.94 | 61.70 | 64.03 | 69.50 | 75.39 | 78.55 | 77.07 | a | 63.29 | 53.87 | 46.70 | a | 61.45 | |||||||||||
| 2000 | 44.48 | 51.48 | 54.29 | 65.10 | 66.42 | 73.90 | 76.65 | 77.55 | 73.57 | 61.90 | 50.45 | j | 45.06 | 62.76 | ||||||||||||
| 2001 | 46.60 | a | 50.86 | 57.61 | 58.70 | 68.74 | 69.00 | a | 74.97 | 77.81 | ----- | z | 59.87 | 52.66 | a | 45.16 | 60.18 | |||||||||
| 2002 | 44.58 | 51.18 | 51.35 | 60.57 | 64.68 | 74.23 | 79.32 | 81.58 | 74.06 | l | 63.00 | 53.97 | 47.94 | 61.13 | ||||||||||||
| 2003 | 51.32 | 50.64 | 55.00 | 58.57 | 66.87 | 75.07 | 83.10 | 81.97 | 76.77 | 64.48 | f | ----- | z | 45.50 | e | 64.48 | ||||||||||
| 2004 | 42.77 | 50.83 | 56.69 | e | 64.63 | 63.76 | f | 75.76 | i | 80.77 | ----- | z | 68.96 | f | 61.45 | ----- | z | ----- | z | 59.53 | ||||||
| 2005 | 46.81 | 55.38 | l | 58.81 | 57.47 | 67.00 | 65.05 | j | 75.97 | 80.68 | 71.33 | ----- | z | ----- | z | 43.26 | 62.66 | |||||||||
| 2006 | 47.16 | 48.04 | 52.32 | 60.03 | 67.61 | 72.50 | 78.77 | 79.06 | 76.60 | 62.00 | ----- | z | ----- | z | 64.41 | |||||||||||
| 2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.22 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 45.28 | 50.77 | 55.47 | 60.36 | 67.02 | 72.37 | 78.00 | 78.77 | 74.09 | 62.89 | 51.13 | 44.94 | 61.83 | |||||||||||||
| S.D. | 3.09 | 3.08 | 3.32 | 2.92 | 3.35 | 3.23 | 3.04 | 3.79 | 3.67 | 2.68 | 2.68 | 2.51 | 1.34 | |||||||||||||
| SKEW | -0.60 | 0.26 | 0.01 | 0.04 | -0.42 | -0.04 | -0.63 | 0.04 | -0.09 | 0.88 | -1.19 | -0.70 | 0.07 | |||||||||||||
| MAX | 51.32 | 57.38 | 62.81 | 65.57 | 73.81 | 77.73 | 83.10 | 87.97 | 80.77 | 71.00 | 54.57 | 48.61 | 64.60 | |||||||||||||
| MIN | 36.55 | 43.89 | 49.39 | 54.37 | 57.94 | 66.30 | 70.58 | 71.03 | 66.93 | 58.29 | 42.70 | 38.90 | 59.03 | |||||||||||||
| NO YRS | 43 | 43 | 43 | 41 | 40 | 39 | 36 | 38 | 36 | 39 | 37 | 39 | 26 | |||||||||||||