| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1965 | ----- | z | ----- | z | ----- | z | 45.73 | 49.30 | d | 58.95 | 65.90 | ----- | z | ----- | z | ----- | z | 39.12 | b | 28.73 | 47.96 | |||||
| 1966 | 31.00 | b | 22.48 | h | 38.74 | 47.35 | ----- | z | 61.84 | k | 67.14 | b | 67.50 | 61.73 | 50.08 | l | 41.05 | 31.45 | 48.25 | |||||||
| 1967 | 35.19 | 38.93 | 39.44 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.79 | q | 39.52 | 29.19 | 36.45 | ||||||
| 1968 | 30.13 | 39.76 | 42.39 | 42.22 | 52.61 | 61.98 | 69.53 | 62.92 | 58.64 | a | ----- | z | ----- | z | 29.77 | 49.00 | ||||||||||
| 1969 | 34.60 | e | 28.10 | w | 43.03 | m | 47.35 | 57.00 | 60.05 | 67.74 | 68.24 | 62.87 | 44.19 | ----- | z | ----- | z | 55.26 | ||||||||
| 1970 | 33.21 | 37.66 | 37.89 | 38.82 | 53.05 | 62.28 | 69.37 | 69.52 | 55.12 | 45.37 | 39.93 | 27.98 | 47.52 | |||||||||||||
| 1971 | 35.77 | 36.04 | 36.19 | 43.88 | 52.65 | 58.48 | 68.76 | 71.95 | 54.12 | 45.31 | 37.25 | 27.68 | 47.34 | |||||||||||||
| 1972 | 29.24 | 35.78 | 44.16 | 42.62 | 55.05 | 61.53 | 67.76 | 67.55 | 56.05 | 47.76 | b | 37.48 | 25.42 | 47.53 | ||||||||||||
| 1973 | 28.03 | 35.62 | 38.21 | 44.38 | 58.00 | 63.13 | 69.77 | 68.11 | 58.65 | 49.52 | 39.18 | 35.29 | 48.99 | |||||||||||||
| 1974 | 28.66 | 35.59 | 39.56 | 44.43 | a | 52.18 | 64.50 | 68.56 | 66.40 | 60.33 | 47.83 | a | 39.30 | 31.77 | 48.26 | |||||||||||
| 1975 | 30.89 | 34.46 | 36.50 | b | 38.53 | a | 50.45 | 58.87 | 70.52 | 63.03 | 58.65 | 49.26 | 36.48 | a | 36.08 | 46.98 | ||||||||||
| 1976 | 33.31 | 36.36 | 35.13 | 43.00 | 56.18 | 59.55 | 69.19 | 61.48 | 58.90 | 49.56 | 41.65 | 31.98 | 48.03 | |||||||||||||
| 1977 | 23.61 | 37.32 | 36.85 | 48.63 | 48.63 | 65.28 | 65.79 | 67.63 | 59.22 | 50.74 | 40.47 | 36.56 | 48.40 | |||||||||||||
| 1978 | 34.02 | 36.52 | 45.65 | 44.33 | 51.31 | 60.22 | 68.27 | 65.84 | 56.97 | 52.03 | 36.42 | 27.02 | 48.22 | |||||||||||||
| 1979 | 21.98 | 35.82 | 41.15 | 45.92 | 55.16 | 62.13 | 69.69 | 65.76 | 62.37 | 52.66 | 33.93 | 35.48 | 48.50 | |||||||||||||
| 1980 | 30.92 | 39.00 | 37.50 | a | 47.78 | 53.79 | 57.35 | c | 69.44 | e | 64.50 | c | 60.32 | 50.03 | 40.25 | b | 34.26 | 48.76 | ||||||||
| 1981 | 30.15 | 36.73 | 40.30 | c | 47.91 | c | 52.62 | c | 60.25 | f | 68.87 | d | 71.80 | d | 61.25 | h | 47.52 | e | 40.84 | b | 36.94 | g | 48.53 | |||
| 1982 | 26.19 | 33.05 | 38.27 | 41.55 | 51.31 | 60.23 | 66.42 | 69.00 | 56.18 | 48.15 | 32.20 | 29.77 | 46.03 | |||||||||||||
| 1983 | 32.11 | 37.38 | 40.63 | 41.69 | a | 53.39 | 57.60 | 63.69 | 68.56 | 57.50 | 52.23 | 38.97 | 27.83 | a | 47.63 | |||||||||||
| 1984 | 19.95 | 31.91 | 39.25 | m | 42.33 | 53.84 | 57.17 | 71.82 | 70.35 | 59.13 | ----- | z | ----- | z | ----- | z | 50.81 | |||||||||
| 1985 | 25.08 | 30.16 | 36.74 | 50.73 | 55.71 | ----- | z | 75.02 | 65.81 | 60.50 | z | 45.40 | p | 32.89 | l | 25.39 | v | 48.46 | ||||||||
| 1986 | ----- | z | ----- | z | 42.77 | c | 43.00 | x | 51.81 | 65.58 | 65.05 | a | ----- | z | 53.48 | 49.52 | 41.62 | 29.00 | b | 49.85 | ||||||
| 1987 | 28.89 | 34.32 | 40.60 | k | 54.25 | l | 50.27 | r | 62.88 | 65.47 | ----- | z | ----- | z | ----- | z | 38.03 | 30.44 | 43.34 | |||||||
| 1988 | 28.85 | 36.79 | h | 39.21 | 48.98 | 53.53 | 64.10 | a | 71.19 | 67.14 | b | 59.10 | 56.61 | i | 37.47 | 26.23 | 49.58 | |||||||||
| 1989 | 28.31 | 24.41 | 42.56 | 50.03 | 52.16 | 63.44 | l | 71.55 | 64.97 | 58.10 | 48.65 | 38.41 | b | 32.40 | 46.50 | |||||||||||
| 1990 | 33.98 | 31.21 | 41.53 | 51.72 | 50.24 | 61.28 | 69.79 | 68.84 | 64.35 | 49.27 | 36.95 | 21.61 | 48.40 | |||||||||||||
| 1991 | ----- | z | 38.14 | 37.68 | 43.87 | 48.31 | 57.33 | 69.45 | 70.10 | 61.50 | a | ----- | z | 38.32 | 30.18 | 49.49 | ||||||||||
| 1992 | 32.42 | 38.90 | 43.47 | ----- | z | 59.68 | ----- | z | 66.92 | 69.52 | 60.48 | 53.58 | 34.72 | a | 27.50 | 48.72 | ||||||||||
| 1993 | 22.29 | 26.18 | 42.48 | 44.75 | 56.82 | 57.02 | 59.61 | 62.66 | 58.14 | a | 49.95 | 33.21 | p | 30.42 | 46.39 | |||||||||||
| 1994 | 35.50 | 32.09 | 43.34 | 48.75 | 56.50 | 61.55 | 71.87 | 72.86 | b | 63.32 | 48.23 | 31.05 | 26.97 | 49.34 | ||||||||||||
| 1995 | 34.05 | 42.68 | 39.61 | 45.67 | j | 51.42 | ----- | z | 67.90 | 65.35 | 61.22 | 48.65 | ----- | z | 30.92 | 49.09 | ||||||||||
| 1996 | 32.65 | 33.50 | 41.63 | ----- | z | ----- | z | ----- | z | 70.78 | k | 68.79 | 58.08 | f | 49.66 | 40.85 | 36.55 | b | 43.38 | |||||||
| 1997 | 32.92 | ----- | z | ----- | z | ----- | z | 58.62 | o | 60.58 | ----- | z | 70.18 | 62.35 | 48.24 | 40.33 | ----- | z | 52.43 | |||||||
| 1998 | ----- | z | 34.98 | ----- | z | 44.09 | a | 50.59 | n | ----- | z | ----- | z | ----- | z | 63.55 | 46.26 | 38.97 | 27.89 | 42.62 | ||||||
| 1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.31 | d | 38.40 | 31.00 | 40.57 | |||
| 2002 | 31.37 | 34.80 | 38.36 | b | 47.85 | 54.03 | 64.53 | 73.63 | a | 66.32 | 61.75 | 46.95 | 38.52 | 34.66 | 49.40 | |||||||||||
| 2003 | 38.19 | 33.07 | 44.18 | 44.28 | 55.45 | 64.77 | 76.13 | 70.85 | 63.05 | 54.79 | b | 33.83 | d | 34.11 | 51.06 | |||||||||||
| 2004 | 28.67 | d | 33.26 | b | 47.11 | 47.96 | d | 54.56 | e | 61.71 | d | 71.84 | 69.76 | 61.00 | 50.00 | 35.48 | 32.23 | 49.46 | ||||||||
| 2005 | 28.31 | 33.84 | 41.47 | 46.12 | 53.92 | 57.67 | 74.71 | 70.44 | 59.00 | 50.63 | 42.65 | g | ----- | z | 51.61 | |||||||||||
| 2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 30.31 | 34.98 | 40.33 | 45.41 | 53.46 | 60.98 | 69.07 | 67.69 | 59.60 | 49.29 | 38.03 | 30.56 | 48.32 | |||||||||||||
| S.D. | 4.25 | 3.71 | 2.95 | 3.27 | 2.69 | 2.68 | 3.33 | 2.85 | 2.79 | 2.46 | 2.67 | 3.54 | 1.13 | |||||||||||||
| SKEW | -0.61 | -0.81 | 0.30 | -0.13 | 0.12 | 0.09 | -0.24 | -0.34 | -0.35 | 0.12 | -0.90 | -0.10 | 0.33 | |||||||||||||
| MAX | 38.19 | 42.68 | 47.11 | 51.72 | 59.68 | 65.58 | 76.13 | 72.86 | 64.35 | 54.79 | 41.65 | 36.56 | 51.06 | |||||||||||||
| MIN | 19.95 | 24.41 | 35.13 | 38.53 | 48.31 | 57.02 | 59.61 | 61.48 | 53.48 | 44.19 | 31.05 | 21.61 | 46.03 | |||||||||||||
| NO YRS | 34 | 32 | 32 | 31 | 32 | 29 | 34 | 33 | 32 | 30 | 32 | 33 | 18 | |||||||||||||