| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1969 | ----- | z | 39.62 | l | 49.94 | 59.87 | 69.97 | 74.60 | 82.74 | 84.19 | 73.30 | 54.77 | 48.03 | 38.23 | 63.56 | |||||||||||
| 1970 | 36.39 | 46.82 | 47.97 | 50.87 | 67.16 | 77.00 | 84.71 | 87.68 | 66.20 | 57.48 | 46.07 | 33.97 | 58.53 | |||||||||||||
| 1971 | 38.77 | 43.18 | 44.52 | 56.43 | 67.39 | 69.97 | 82.94 | 90.61 | 68.20 | 57.35 | 43.87 | 35.29 | 58.21 | |||||||||||||
| 1972 | 34.65 | 40.07 | 53.55 | 52.60 | 68.90 | 74.27 | 81.68 | 84.61 | 66.67 | 59.97 | a | 44.93 | 30.52 | 57.70 | ||||||||||||
| 1973 | 35.00 | 42.71 | 48.97 | 57.17 | 69.81 | 76.33 | 86.90 | 84.42 | 72.57 | 58.52 | 41.00 | 39.45 | 59.40 | |||||||||||||
| 1974 | 31.10 | 42.71 | 47.81 | 56.43 | 61.19 | 81.03 | 82.45 | 82.71 | 78.33 | 65.13 | 48.10 | 38.03 | 59.59 | |||||||||||||
| 1975 | 35.90 | 39.57 | 44.87 | 48.50 | 62.87 | 67.57 | 85.00 | 76.58 | 79.30 | 58.19 | 44.13 | 39.23 | 56.81 | |||||||||||||
| 1976 | 37.45 | 39.79 | 42.65 | 55.53 | 69.03 | 69.57 | 83.48 | 75.26 | 78.23 | 65.45 | 51.77 | 41.52 | 59.14 | |||||||||||||
| 1977 | 37.84 | 51.75 | 45.87 | a | 67.60 | 61.39 | 80.60 | 82.54 | c | 88.93 | d | 71.17 | 61.93 | a | 45.56 | e | 38.94 | 61.17 | ||||||||
| 1978 | 39.10 | 45.50 | 58.52 | 57.83 | 62.47 | a | 76.63 | 83.06 | 80.73 | a | 72.24 | a | 68.19 | 43.73 | d | 32.34 | b | 60.03 | ||||||||
| 1979 | 27.48 | 41.96 | 53.71 | 57.80 | 68.30 | a | 77.34 | a | 87.20 | a | 85.40 | a | 81.62 | a | 64.97 | 43.48 | e | 41.29 | 60.88 | |||||||
| 1980 | 36.20 | a | 45.24 | 47.55 | 63.87 | 66.81 | e | 70.10 | 82.33 | a | 78.81 | 76.17 | a | 64.66 | b | 48.40 | e | 43.61 | 60.31 | |||||||
| 1981 | 42.06 | 46.46 | 55.06 | 59.90 | 62.23 | e | 70.72 | a | 82.94 | 91.13 | a | 78.00 | 60.10 | 52.08 | f | 41.13 | 62.70 | |||||||||
| 1982 | 36.55 | 39.04 | 50.13 | 56.40 | 64.48 | 75.97 | 80.68 | 84.71 | 72.47 | 59.90 | 43.52 | g | 37.03 | 59.76 | ||||||||||||
| 1983 | 41.61 | 48.00 | 54.00 | 58.87 | 70.48 | 74.00 | 79.00 | 85.48 | 71.90 | 64.10 | 49.07 | 29.71 | 60.52 | |||||||||||||
| 1984 | 35.81 | 42.59 | 51.23 | 54.60 | 64.65 | 72.23 | 86.39 | 86.32 | 70.33 | 55.16 | 45.23 | 32.74 | 58.11 | |||||||||||||
| 1985 | 29.90 | 37.32 | 48.16 | 63.83 | 70.16 | 76.87 | 91.06 | 79.39 | 66.10 | 59.26 | 33.70 | 31.77 | 57.29 | |||||||||||||
| 1986 | 40.81 | 44.32 | 58.06 | 60.53 | 69.84 | 82.87 | 79.32 | 87.97 | 66.53 | 66.19 | 45.50 | 35.87 | 61.48 | |||||||||||||
| 1987 | 36.03 | 45.04 | 52.94 | 70.50 | 71.42 | 80.10 | 79.68 | 83.61 | 83.04 | b | 73.32 | 49.53 | 38.77 | a | 63.66 | |||||||||||
| 1988 | 35.90 | 47.62 | 52.42 | 64.90 | 67.52 | 75.23 | 85.32 | 86.45 | 76.73 | 73.68 | 45.67 | 36.03 | 62.29 | |||||||||||||
| 1989 | 36.52 | 34.64 | 50.03 | 64.50 | 67.55 | 78.43 | 86.13 | 78.58 | 77.07 | 60.74 | 49.20 | 41.97 | 60.45 | |||||||||||||
| 1990 | 41.42 | 43.86 | 56.19 | 65.37 | 64.94 | 74.97 | 88.55 | 85.42 | 85.97 | 60.29 | 48.10 | 30.61 | 62.14 | |||||||||||||
| 1991 | 35.42 | 51.96 | a | 50.58 | 57.76 | i | 63.84 | 70.27 | 86.61 | 89.32 | 80.97 | 66.23 | 42.40 | 39.61 | 61.56 | |||||||||||
| 1992 | 40.65 | 52.00 | 62.10 | 64.90 | 76.77 | 80.67 | 80.77 | 87.74 | 77.53 | 68.06 | 43.77 | 37.48 | 64.37 | |||||||||||||
| 1993 | 31.42 | 39.32 | 53.26 | 57.53 | 75.35 | 72.17 | 73.19 | 80.03 | 79.10 | 66.00 | 42.23 | 39.48 | 59.09 | |||||||||||||
| 1994 | 43.35 | 43.68 | 57.48 | 62.23 | 70.10 | 77.93 | 89.97 | 90.90 | 82.93 | 60.90 | 39.40 | 34.93 | a | 62.82 | ||||||||||||
| 1995 | 40.84 | 49.86 | 51.81 | 57.77 | 67.52 | 72.60 | 83.42 | 83.23 | 81.60 | 60.00 | 49.33 | 37.61 | 61.30 | |||||||||||||
| 1996 | 37.48 | 42.62 | 53.45 | 60.13 | 61.65 | 77.57 | 91.61 | 87.52 | 72.93 | 63.94 | 47.80 | 37.06 | 61.15 | |||||||||||||
| 1997 | 36.06 | 44.36 | 51.77 | 56.50 | 72.55 | 72.87 | 82.55 | 87.90 | 79.07 | 63.16 | 50.50 | 37.03 | 61.19 | |||||||||||||
| 1998 | 42.61 | 48.39 | 52.06 | 62.10 | 67.19 | 72.60 | 90.65 | 91.16 | 84.27 | 63.48 | 43.07 | 34.39 | 62.66 | |||||||||||||
| 1999 | 40.23 | 39.18 | 51.58 | 56.53 | 66.84 | 73.53 | 86.35 | 88.26 | 79.03 | 68.87 | 53.07 | 36.90 | 61.70 | |||||||||||||
| 2000 | 38.52 | 42.79 | ----- | z | 66.20 | 66.26 | 76.03 | 88.61 | 91.52 | 73.70 | 61.84 | 36.70 | 34.81 | 61.54 | ||||||||||||
| 2001 | 34.52 | 39.79 | 52.26 | 55.97 | 74.52 | 75.27 | 84.84 | 93.94 | 87.90 | 58.90 | 48.60 | 33.74 | 61.69 | |||||||||||||
| 2002 | 34.71 | 40.71 | 44.68 | 59.13 | 67.06 | 76.63 | 92.52 | 84.58 | 78.23 | 53.71 | 47.77 | 40.94 | 60.06 | |||||||||||||
| 2003 | 42.19 | 45.21 | 50.10 | 56.00 | 68.23 | 84.27 | 96.23 | 92.39 | ----- | z | 70.58 | 36.27 | 35.42 | 61.53 | ||||||||||||
| 2004 | 30.81 | 40.21 | 60.39 | 64.17 | ----- | z | 77.60 | 87.06 | 86.35 | 75.73 | 62.10 | ----- | z | ----- | z | 64.94 | ||||||||||
| 2005 | 41.06 | 46.89 | 58.42 | 62.47 | ----- | z | ----- | z | 91.97 | b | ----- | z | ----- | z | ----- | z | ----- | z | 28.58 | 54.90 | ||||||
| 2006 | ----- | z | ----- | z | ----- | z | ----- | z | 76.35 | ----- | z | ----- | z | ----- | z | ----- | z | 62.06 | 45.67 | ----- | z | 61.36 | ||||
| 2007 | ----- | z | ----- | z | ----- | z | ----- | z | 67.65 | ----- | z | 94.65 | 87.73 | a | 73.00 | a | ----- | z | 42.63 | 35.68 | 66.89 | |||||
| 2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2009 | 36.42 | 41.32 | 41.19 | 51.03 | 56.00 | 74.27 | 84.77 | 87.74 | 74.17 | 52.26 | 38.43 | ----- | z | 57.96 | ||||||||||||
| 2010 | 38.03 | 41.18 | 49.00 | 55.67 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.97 | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 37.13 | 43.62 | 51.43 | 59.27 | 67.54 | 75.42 | 85.38 | 85.77 | 76.01 | 62.41 | 45.08 | 36.53 | 60.47 | |||||||||||||
| S.D. | 3.76 | 4.09 | 4.82 | 4.91 | 4.41 | 3.85 | 4.68 | 4.45 | 5.61 | 5.00 | 4.41 | 3.67 | 1.89 | |||||||||||||
| SKEW | -0.48 | 0.30 | 0.07 | 0.08 | -0.05 | 0.18 | 0.15 | -0.48 | -0.02 | 0.24 | -0.64 | -0.27 | -0.04 | |||||||||||||
| MAX | 43.35 | 52.00 | 62.10 | 70.50 | 76.77 | 84.27 | 96.23 | 93.94 | 87.90 | 73.68 | 53.07 | 43.61 | 64.37 | |||||||||||||
| MIN | 27.48 | 34.64 | 41.19 | 48.50 | 56.00 | 67.57 | 73.19 | 75.26 | 66.10 | 52.26 | 33.70 | 28.58 | 56.81 | |||||||||||||
| NO YRS | 38 | 38 | 38 | 38 | 38 | 37 | 39 | 38 | 37 | 38 | 36 | 37 | 29 | |||||||||||||