| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.07 | 60.48 | 44.07 | 41.32 | 53.23 | |||||
| 1978 | 37.84 | 42.93 | 55.94 | 57.03 | 61.58 | 75.10 | 80.87 | 77.74 | 66.03 | 65.23 | 43.10 | 37.48 | 58.41 | |||||||||||||
| 1979 | 30.71 | 39.00 | 53.23 | 55.63 | 67.10 | 75.13 | 79.35 | 78.03 | 74.67 | 62.48 | 44.23 | 41.35 | 58.41 | |||||||||||||
| 1980 | 34.14 | b | 39.14 | 45.42 | 60.07 | 64.13 | 66.03 | 79.48 | 76.35 | 72.40 | 63.20 | a | 48.40 | 42.67 | a | 57.62 | ||||||||||
| 1981 | 42.61 | 44.58 | b | 55.06 | 55.57 | 63.29 | 66.43 | 78.20 | a | 85.93 | a | 73.90 | 58.68 | 50.03 | 40.47 | a | 59.56 | |||||||||
| 1982 | 38.58 | 41.86 | 50.03 | 54.00 | 65.71 | 75.57 | ----- | z | 80.03 | 70.80 | 57.16 | 43.67 | 39.26 | 56.06 | ||||||||||||
| 1983 | 40.26 | 42.89 | 52.29 | 59.93 | 69.84 | 68.03 | 72.45 | 79.61 | ----- | z | 60.87 | 46.70 | 30.52 | 56.67 | ||||||||||||
| 1984 | 38.55 | 42.93 | 51.35 | 53.73 | 59.97 | 68.23 | 82.32 | 82.97 | 70.07 | 55.45 | 43.60 | 35.87 | 57.09 | |||||||||||||
| 1985 | 35.87 | 41.36 | 49.52 | 59.40 | 66.48 | 73.97 | 88.55 | 77.87 | 66.83 | 58.55 | 37.00 | 32.06 | 57.29 | |||||||||||||
| 1986 | 39.35 | 41.71 | 53.71 | 56.87 | 65.68 | 78.00 | 73.90 | 87.87 | 67.93 | 65.13 | 47.83 | 36.48 | 59.54 | |||||||||||||
| 1987 | 36.58 | 44.54 | 50.35 | 63.67 | 68.32 | 77.33 | 75.77 | 81.84 | 78.53 | 70.90 | 49.90 | 36.29 | 61.17 | |||||||||||||
| 1988 | 36.23 | 47.28 | 51.84 | ----- | z | 63.84 | 70.67 | 80.19 | 80.29 | 74.53 | 66.52 | 45.90 | 39.00 | 59.66 | ||||||||||||
| 1989 | 39.45 | 34.75 | 44.16 | 61.73 | 64.90 | 74.23 | 74.13 | 75.39 | 77.20 | 60.19 | 48.63 | 41.19 | 58.00 | |||||||||||||
| 1990 | 42.00 | 39.29 | 52.19 | 62.97 | 61.84 | 69.67 | 83.94 | 80.90 | 78.83 | 56.81 | 48.63 | 33.65 | 59.23 | |||||||||||||
| 1991 | 38.23 | 50.50 | 48.94 | 55.23 | 59.55 | 65.47 | 80.84 | 82.81 | 78.50 | 63.19 | 46.27 | 40.16 | 59.14 | |||||||||||||
| 1992 | 41.23 | 48.17 | 61.00 | 59.87 | 73.55 | 78.90 | 80.10 | 82.84 | 69.40 | 60.84 | 44.57 | 34.81 | 61.27 | |||||||||||||
| 1993 | 31.61 | 38.86 | 47.39 | 53.03 | 69.32 | 68.23 | 68.94 | 78.35 | 78.53 | 66.06 | 43.13 | 37.29 | 56.73 | |||||||||||||
| 1994 | 44.29 | 39.79 | 54.52 | 59.80 | 67.52 | 69.83 | 83.35 | 79.90 | 76.00 | 59.81 | 40.47 | 37.55 | 59.40 | |||||||||||||
| 1995 | 37.26 | 50.25 | 51.68 | 55.70 | 68.23 | 70.03 | 79.03 | 75.74 | 75.90 | 58.03 | 51.10 | 37.81 | 59.23 | |||||||||||||
| 1996 | 38.35 | 38.48 | 49.74 | 57.47 | 59.13 | 71.77 | 83.61 | 81.81 | 69.53 | 58.03 | 44.37 | 36.65 | 57.41 | |||||||||||||
| 1997 | 37.39 | 42.36 | 46.19 | 54.47 | 69.45 | 69.57 | 77.48 | 82.42 | 72.87 | 57.65 | 48.97 | 38.42 | 58.10 | |||||||||||||
| 1998 | 37.84 | 44.32 | 51.48 | 58.90 | 60.58 | 72.90 | 83.74 | 83.55 | 79.23 | 57.71 | 47.10 | 36.58 | 59.49 | |||||||||||||
| 1999 | 41.45 | 40.36 | 47.19 | 57.70 | 60.87 | 66.83 | 78.58 | 80.97 | 76.23 | 60.77 | 49.23 | 40.90 | 58.42 | |||||||||||||
| 2000 | 37.00 | 39.79 | 46.61 | 61.77 | 63.23 | 72.53 | 77.58 | 79.61 | 72.23 | 59.35 | 41.83 | 35.68 | 57.27 | |||||||||||||
| 2001 | 36.81 | 40.64 | 51.19 | 54.50 | 69.61 | 68.37 | 75.87 | 79.94 | 75.30 | 58.61 | 48.43 | 37.45 | 58.06 | |||||||||||||
| 2002 | 37.65 | 43.64 | 46.10 | 56.10 | 62.26 | 73.27 | 81.13 | 80.35 | 76.27 | 61.26 | 47.23 | 38.97 | 58.68 | |||||||||||||
| 2003 | 43.35 | 46.96 | 50.35 | 54.73 | 65.10 | 75.80 | 85.19 | 82.68 | 76.87 | 63.45 | 43.07 | 37.26 | 60.40 | |||||||||||||
| 2004 | 34.03 | 40.86 | 55.58 | 63.97 | 64.13 | 73.20 | 83.68 | 81.29 | 69.33 | 59.52 | 47.37 | 40.58 | 59.46 | |||||||||||||
| 2005 | 36.39 | 46.07 | 56.35 | 55.93 | 65.19 | 67.10 | ----- | z | 83.65 | 72.73 | 58.42 | 43.10 | 33.74 | 56.24 | ||||||||||||
| 2006 | 40.94 | 41.96 | 46.87 | 59.30 | ----- | z | 73.63 | 83.77 | 81.52 | 76.13 | 61.91 | i | 44.28 | e | 36.39 | 58.48 | ||||||||||
| 2007 | 36.55 | 41.79 | 50.90 | 56.03 | 67.71 | 70.30 | 82.00 | 77.68 | 70.93 | 53.87 | 45.83 | 36.48 | 57.51 | |||||||||||||
| 2008 | 34.55 | 43.28 | 44.97 | 50.67 | 63.77 | 68.73 | 80.81 | 78.10 | 73.33 | 58.26 | 47.60 | 34.87 | 56.58 | |||||||||||||
| 2009 | 36.06 | 39.71 | 42.74 | 56.00 | 67.68 | 73.77 | 85.29 | 81.29 | 75.50 | 51.67 | v | 44.90 | 33.55 | 57.86 | ||||||||||||
| 2010 | 38.68 | 47.11 | 51.16 | 54.17 | 59.68 | 66.83 | 80.29 | 79.61 | 68.67 | 59.29 | 43.83 | 36.65 | 57.16 | |||||||||||||
| 2011 | 36.94 | 39.64 | 42.90 | 49.13 | 58.74 | 67.03 | 73.77 | e | 80.87 | h | 76.73 | 55.52 | j | 44.40 | 37.61 | 52.69 | ||||||||||
| 2012 | 38.29 | 41.48 | 42.84 | 56.73 | 63.19 | 61.38 | v | 78.50 | u | 84.30 | a | 78.27 | 59.16 | 46.43 | 38.68 | 54.94 | ||||||||||
| 2013 | 34.68 | 20.82 | 42.05 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.75 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 37.83 | 41.92 | 50.05 | 57.11 | 64.74 | 71.25 | 79.82 | 80.68 | 73.64 | 60.45 | 45.70 | 37.38 | 58.54 | |||||||||||||
| S.D. | 3.01 | 5.00 | 4.28 | 3.48 | 3.65 | 3.74 | 4.27 | 2.79 | 3.89 | 3.52 | 2.96 | 2.76 | 1.27 | |||||||||||||
| SKEW | -0.04 | -1.84 | 0.18 | 0.08 | 0.21 | 0.27 | -0.46 | 0.24 | -0.36 | 0.89 | -0.51 | -0.28 | 0.47 | |||||||||||||
| MAX | 44.29 | 50.50 | 61.00 | 63.97 | 73.55 | 78.90 | 88.55 | 87.87 | 79.23 | 70.90 | 51.10 | 42.67 | 61.27 | |||||||||||||
| MIN | 30.71 | 20.82 | 42.74 | 49.13 | 58.74 | 65.47 | 68.94 | 75.39 | 66.03 | 53.87 | 37.00 | 30.52 | 56.58 | |||||||||||||
| NO YRS | 36 | 36 | 35 | 34 | 34 | 34 | 32 | 34 | 35 | 33 | 36 | 36 | 27 | |||||||||||||