| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.18 | s | 74.10 | 73.94 | 74.47 | 57.97 | 41.83 | 35.48 | 59.63 | |||||||
| 1975 | 35.84 | 32.75 | 35.77 | 37.73 | 53.26 | 60.43 | 72.97 | 66.10 | 72.10 | 48.90 | 37.13 | 35.84 | 49.07 | |||||||||||||
| 1976 | 36.84 | 36.03 | 40.26 | 44.03 | 56.42 | 59.43 | 72.97 | 66.68 | 67.30 | 57.45 | 47.87 | 38.55 | 51.99 | |||||||||||||
| 1977 | 35.61 | 44.18 | 38.06 | 53.00 | 45.65 | 68.27 | 71.68 | 75.29 | 61.50 | d | ----- | z | ----- | z | ----- | z | 54.80 | |||||||||
| 1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.81 | ----- | z | ----- | z | 61.81 | ||
| 1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.65 | m | ----- | z | 9999.00 | |
| 1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.06 | 69.23 | 67.50 | 58.90 | 43.30 | 39.42 | 58.74 | |||||||
| 1981 | 37.45 | 39.93 | a | 44.39 | 50.40 | 51.84 | 65.85 | d | 75.22 | d | 82.12 | e | 70.67 | c | 51.67 | j | 41.81 | c | 35.94 | 54.15 | ||||||
| 1982 | 33.71 | 37.25 | 41.48 | 43.77 | 56.06 | 61.03 | 71.65 | 73.87 | 60.73 | ----- | z | 36.87 | 32.19 | 49.87 | ||||||||||||
| 1983 | 36.71 | ----- | z | 41.33 | v | 43.67 | 59.13 | 60.16 | k | ----- | z | ----- | z | 62.00 | u | 57.06 | ----- | z | ----- | z | 49.14 | |||||
| 1984 | ----- | z | ----- | z | ----- | z | ----- | z | 58.11 | m | 59.70 | 76.00 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.70 | ||
| 1985 | 35.50 | m | 35.71 | g | 42.22 | h | 59.38 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.80 | z | 43.03 | 34.17 | g | 43.03 | ||
| 1988 | 34.52 | 43.93 | 44.03 | a | 51.81 | n | 55.64 | i | 68.18 | m | 77.00 | a | 77.56 | d | 73.20 | 69.43 | j | 38.00 | 36.19 | 53.05 | ||||||
| 1989 | 35.57 | j | 30.57 | g | 39.95 | j | 49.67 | r | 55.87 | 63.06 | l | 71.59 | i | 77.93 | a | 78.15 | q | 68.90 | u | 45.85 | j | 41.39 | 58.40 | |||
| 1990 | 37.77 | 37.75 | ----- | z | 54.83 | r | 60.29 | x | ----- | z | 79.10 | k | ----- | z | 84.89 | u | ----- | z | 43.97 | 30.87 | 37.59 | |||||
| 1991 | 36.26 | 47.61 | 41.35 | 44.27 | s | 57.12 | n | ----- | z | 80.73 | t | 82.73 | i | 79.05 | k | 67.16 | 42.80 | ----- | z | 47.04 | ||||||
| 1992 | 36.32 | 44.00 | ----- | z | 57.29 | i | ----- | z | 72.83 | r | 74.06 | 79.16 | 72.08 | e | 64.90 | j | 43.75 | j | 32.35 | 56.33 | ||||||
| 1993 | 30.81 | 33.75 | 43.39 | 49.25 | r | 62.67 | a | 66.30 | 68.06 | 74.77 | 76.03 | 62.52 | 43.23 | 35.39 | 54.27 | |||||||||||
| 1994 | 38.68 | 36.21 | 44.20 | a | 48.70 | 59.45 | 67.97 | 80.39 | 74.81 | 70.14 | i | 53.45 | 31.39 | l | 33.77 | 53.76 | ||||||||||
| 1995 | 34.77 | 42.89 | 38.87 | 47.00 | l | 53.31 | r | 59.40 | 72.62 | o | ----- | z | 65.88 | n | 53.55 | 46.18 | b | 34.13 | 44.26 | |||||||
| 1996 | 34.06 | 36.07 | 42.77 | 46.36 | s | 47.53 | p | 68.17 | x | 77.68 | 77.32 | ----- | z | ----- | z | 37.80 | o | 34.14 | b | 50.34 | ||||||
| 1997 | 34.97 | b | 36.96 | 41.69 | o | ----- | z | 61.75 | o | 60.15 | c | 72.15 | k | 79.42 | 65.67 | 50.87 | 43.17 | 34.74 | 50.74 | |||||||
| 1998 | 37.42 | 35.36 | 41.16 | 47.93 | 48.26 | 63.27 | 76.26 | 77.58 | 69.63 | 52.94 | 38.70 | 33.39 | 51.82 | |||||||||||||
| 1999 | 35.48 | 34.46 | 37.42 | 42.50 | 50.16 | 62.23 | 72.06 | 70.32 | 68.00 | 60.61 | 47.77 | 38.52 | 51.63 | |||||||||||||
| 2000 | 34.90 | 39.55 | 44.06 | 53.03 | 52.65 | 66.60 | 70.35 | 74.52 | 68.23 | 54.35 | 37.97 | 36.97 | 52.77 | |||||||||||||
| 2001 | 36.71 | 37.86 | 45.35 | 46.50 | 62.13 | 61.80 | 69.90 | 74.65 | 69.90 | 57.93 | a | 42.93 | 34.26 | 53.33 | ||||||||||||
| 2002 | 34.45 | 42.11 | 41.10 | 48.47 | 54.29 | 65.87 | 75.84 | 70.52 | 69.40 | 54.52 | 44.70 | 35.77 | 53.09 | |||||||||||||
| 2003 | 38.90 | 38.43 | 42.00 | 43.30 | 54.10 | 68.43 | 76.10 | 73.87 | 70.10 | 58.26 | 35.63 | 34.00 | 52.76 | |||||||||||||
| 2004 | 34.71 | 36.45 | 47.19 | 51.07 | 53.42 | 64.60 | 75.29 | c | 73.77 | 61.70 | 54.90 | 43.10 | 38.32 | 52.88 | ||||||||||||
| 2005 | 37.19 | 43.21 | 45.58 | 45.83 | 54.13 | 56.97 | 75.06 | 76.29 | 64.90 | 54.55 | 38.50 | 32.87 | 52.09 | |||||||||||||
| 2006 | 37.18 | c | 34.54 | 36.19 | 46.30 | j | ----- | z | 69.38 | f | ----- | z | 74.06 | 69.07 | ----- | z | 39.83 | ----- | z | 48.48 | ||||||
| 2007 | ----- | z | 37.29 | 45.73 | a | 46.83 | 61.97 | 64.77 | 75.94 | 73.10 | 64.13 | 49.48 | 45.33 | 34.81 | d | 54.49 | ||||||||||
| 2008 | ----- | z | ----- | z | 41.42 | 45.83 | ----- | z | ----- | z | ----- | z | 74.13 | 69.90 | 55.48 | 44.43 | 33.55 | 52.11 | ||||||||
| 2009 | 35.42 | 41.11 | 38.00 | i | 45.13 | 58.60 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.55 | ||||
| 2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2011 | 37.65 | 36.82 | 38.26 | 40.60 | 50.06 | 57.86 | a | 68.61 | 74.77 | 72.50 | 56.94 | 39.73 | 38.97 | 51.06 | ||||||||||||
| 2012 | 37.87 | 37.86 | 39.19 | 48.70 | 56.81 | 59.97 | a | 76.03 | 77.94 | 73.00 | 56.39 | 43.03 | 32.71 | 53.29 | ||||||||||||
| 2013 | 34.58 | 38.32 | 44.81 | d | 50.50 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.00 | z | 39.24 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 35.96 | 38.67 | 41.76 | 46.35 | 54.92 | 62.90 | 73.97 | 74.58 | 68.82 | 56.35 | 41.96 | 35.35 | 52.15 | |||||||||||||
| S.D. | 1.75 | 3.69 | 3.16 | 3.96 | 4.62 | 3.58 | 3.01 | 3.70 | 4.10 | 4.23 | 3.34 | 2.54 | 1.20 | |||||||||||||
| SKEW | -0.67 | 0.62 | -0.26 | -0.14 | 0.00 | 0.10 | -0.18 | -0.48 | -0.41 | 0.47 | -0.16 | 0.53 | -1.39 | |||||||||||||
| MAX | 38.90 | 47.61 | 47.19 | 53.03 | 62.67 | 68.43 | 80.39 | 82.12 | 76.03 | 67.16 | 47.87 | 41.39 | 53.33 | |||||||||||||
| MIN | 30.81 | 32.75 | 35.77 | 37.73 | 45.65 | 56.97 | 68.06 | 66.10 | 60.73 | 48.90 | 35.63 | 30.87 | 49.07 | |||||||||||||
| NO YRS | 28 | 28 | 25 | 20 | 20 | 21 | 23 | 27 | 24 | 23 | 26 | 27 | 12 | |||||||||||||