| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.50 | d | 31.58 | e | 36.54 | |
| 1979 | 28.23 | e | 34.04 | e | 46.35 | k | 49.37 | c | 61.57 | a | 73.90 | 83.07 | b | 77.07 | d | 77.55 | j | 54.95 | j | 43.25 | j | 44.47 | n | 58.18 | ||
| 1980 | 35.32 | l | 43.74 | f | 38.61 | h | 53.55 | h | ----- | z | 66.70 | j | 81.14 | j | 74.71 | g | ----- | z | ----- | z | ----- | z | 49.29 | n | 9999.00 | |
| 1981 | 45.62 | r | 46.11 | j | 45.52 | j | 58.64 | h | 56.89 | m | 72.27 | s | 83.15 | k | 85.62 | j | 76.50 | j | 55.05 | i | 50.79 | k | 39.79 | l | 9999.00 | |
| 1982 | 33.45 | k | 35.96 | 41.11 | l | 49.05 | j | 58.00 | k | 69.24 | i | 76.33 | j | 83.27 | i | 66.62 | i | 52.57 | j | 39.35 | j | 35.70 | k | 35.96 | ||
| 1983 | 41.95 | j | 39.75 | 42.61 | 45.38 | i | 58.10 | j | 68.79 | a | 77.00 | k | 78.39 | 69.57 | 61.86 | j | 43.50 | j | 29.59 | n | 59.82 | |||||
| 1984 | 36.62 | j | 39.45 | 41.74 | 45.17 | 56.68 | 62.87 | 81.00 | 80.94 | 67.67 | 49.00 | 38.70 | 31.48 | 54.06 | ||||||||||||
| 1985 | 36.00 | 33.21 | 40.55 | 57.10 | 63.58 | 76.20 | 86.63 | a | 79.61 | 61.07 | a | 57.00 | 33.87 | 39.16 | 55.33 | |||||||||||
| 1986 | 44.84 | 40.46 | 50.81 | 51.10 | 61.57 | a | 76.83 | 78.39 | 85.94 | 59.97 | 58.32 | 44.60 | 39.61 | 57.70 | ||||||||||||
| 1987 | 33.26 | 37.93 | 42.65 | 60.33 | 62.84 | 71.77 | 75.65 | 78.03 | 76.67 | 64.77 | 44.33 | 33.38 | j | 58.93 | ||||||||||||
| 1988 | 35.10 | 43.61 | a | 45.42 | 57.00 | a | 64.60 | a | 73.97 | 82.71 | 80.68 | 70.80 | 67.29 | 37.33 | 34.65 | 57.76 | ||||||||||
| 1989 | 34.68 | 30.32 | 42.06 | 55.47 | 58.87 | 72.87 | 83.77 | 75.32 | 70.60 | 55.84 | 44.27 | 39.26 | 55.28 | |||||||||||||
| 1990 | 36.68 | 35.96 | 45.29 | 56.53 | 56.29 | 68.47 | 78.87 | 79.16 | 77.10 | 59.39 | 44.50 | 29.65 | n | 58.02 | ||||||||||||
| 1991 | 36.50 | i | 47.95 | i | 39.67 | j | 48.33 | 55.58 | l | 65.60 | j | 81.68 | i | 84.45 | i | 73.17 | 58.52 | 40.33 | 39.77 | 52.02 | ||||||
| 1992 | 37.94 | 42.24 | 48.84 | 56.80 | 70.00 | 72.07 | 76.19 | 81.03 | 71.03 | 61.58 | 38.77 | 31.39 | 57.32 | |||||||||||||
| 1993 | 30.26 | 34.54 | 45.48 | 46.27 | 63.45 | 63.40 | 68.68 | 73.35 | 71.00 | 57.90 | 38.97 | 37.58 | 52.57 | |||||||||||||
| 1994 | 39.48 | 34.82 | 51.00 | 53.37 | 63.23 | 73.60 | 83.61 | 83.42 | 74.67 | 55.00 | 31.83 | 34.94 | 56.58 | |||||||||||||
| 1995 | 35.58 | 46.89 | 41.26 | 48.27 | 56.81 | 64.67 | 78.06 | 80.29 | 72.80 | 57.94 | 49.32 | b | 34.97 | 55.57 | ||||||||||||
| 1996 | 34.19 | 39.76 | 45.94 | 51.80 | 56.55 | 71.80 | 83.84 | 82.06 | 67.77 | 57.06 | 44.43 | 34.10 | 55.78 | |||||||||||||
| 1997 | 35.35 | 37.89 | 47.10 | 46.67 | 64.42 | 67.20 | 78.81 | 81.77 | 74.70 | 61.26 | 47.50 | 39.10 | 56.81 | |||||||||||||
| 1998 | 38.61 | 36.57 | 44.42 | 49.80 | 54.60 | a | 64.33 | 85.35 | 84.84 | ----- | z | 54.00 | 46.30 | 30.26 | 53.55 | |||||||||||
| 1999 | 34.90 | 37.73 | m | 44.74 | 46.12 | m | 60.35 | n | 66.94 | n | 87.00 | y | 80.07 | q | 74.00 | r | 66.55 | t | 58.30 | t | ----- | z | 39.82 | |||
| 2000 | 37.54 | r | 39.71 | v | 44.93 | q | 62.00 | o | 60.26 | l | 79.24 | m | 84.36 | q | 86.79 | l | 77.08 | q | 54.55 | t | 35.75 | r | 43.67 | y | 9999.00 | |
| 2001 | 34.85 | r | 36.20 | m | 44.80 | u | 55.36 | p | 68.71 | q | 69.21 | p | 75.57 | q | 86.21 | l | 79.00 | o | 60.19 | j | 42.45 | s | 32.06 | o | 9999.00 | |
| 2002 | 31.42 | l | 40.17 | j | ----- | z | 53.70 | j | 57.76 | j | 75.18 | m | ----- | z | 77.18 | i | 71.33 | l | 56.43 | j | 49.27 | o | 38.84 | l | 9999.00 | |
| 2003 | 45.75 | k | 37.43 | n | 43.56 | m | 46.85 | j | 61.44 | o | 74.63 | k | 87.47 | p | 78.87 | p | 66.32 | k | 58.59 | n | 33.06 | l | 32.06 | m | 9999.00 | |
| 2004 | 33.29 | q | 31.13 | n | ----- | z | ----- | z | 50.95 | k | 60.59 | m | 77.50 | m | 79.84 | l | 68.90 | 55.40 | a | 43.20 | 37.23 | 51.18 | ||||
| 2005 | 38.71 | 41.64 | 44.71 | 49.53 | 58.48 | 66.23 | 85.77 | 83.52 | 72.00 | 59.32 | 44.00 | 35.06 | 56.58 | |||||||||||||
| 2006 | 35.50 | a | 36.11 | 36.26 | 47.80 | 63.00 | 72.88 | e | 86.32 | 80.37 | a | 69.47 | 56.74 | 39.65 | d | 32.58 | 54.72 | |||||||||
| 2007 | 33.65 | 38.14 | 48.06 | ----- | z | 65.87 | 73.93 | ----- | z | 81.29 | 69.70 | ----- | z | 44.47 | 27.40 | a | 53.61 | |||||||||
| 2008 | 29.29 | 35.31 | 37.29 | 44.43 | 57.52 | 69.00 | 82.60 | a | 81.42 | ----- | z | ----- | z | 46.33 | 31.84 | 51.50 | ||||||||||
| 2009 | 34.90 | b | 35.29 | ----- | z | 47.77 | 62.81 | 62.79 | b | 80.00 | ----- | z | 76.13 | 48.87 | ----- | z | 28.84 | 53.04 | ||||||||
| 2010 | 35.00 | 35.25 | 39.61 | ----- | z | 47.17 | h | 65.27 | 78.77 | 75.81 | ----- | z | 57.68 | ----- | z | ----- | z | 55.34 | ||||||||
| 2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.39 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 35.34 | 37.62 | 44.09 | 51.15 | 61.14 | 69.67 | 81.07 | 80.21 | 70.74 | 57.64 | 42.11 | 34.54 | 56.00 | |||||||||||||
| S.D. | 3.61 | 3.74 | 3.95 | 4.65 | 3.97 | 4.50 | 4.36 | 3.12 | 4.49 | 4.36 | 4.43 | 3.81 | 1.47 | |||||||||||||
| SKEW | 0.32 | 0.54 | -0.11 | 0.41 | 0.17 | -0.14 | -1.02 | -0.34 | -0.86 | -0.02 | -0.66 | -0.12 | -0.88 | |||||||||||||
| MAX | 44.84 | 46.89 | 51.00 | 60.33 | 70.00 | 76.83 | 86.63 | 85.94 | 77.10 | 67.29 | 49.32 | 39.77 | 57.76 | |||||||||||||
| MIN | 28.23 | 30.32 | 36.26 | 44.43 | 54.60 | 62.79 | 68.68 | 73.35 | 59.97 | 48.87 | 31.83 | 27.40 | 52.57 | |||||||||||||
| NO YRS | 21 | 23 | 21 | 20 | 20 | 22 | 21 | 21 | 20 | 20 | 21 | 20 | 12 | |||||||||||||