YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.33 | 32.63 | a | 24.37 | 26.39 | 30.18 | h | |||
1980 | 8.61 | 24.41 | 26.58 | 32.07 | a | 35.33 | a | 37.27 | 41.84 | 37.58 | 35.41 | a | 26.61 | 31.57 | 28.45 | 30.48 | ||||||||||
1981 | 29.81 | 27.04 | a | 26.90 | a | 28.17 | 34.43 | a | 41.00 | 39.73 | a | 41.77 | 34.03 | 28.87 | 27.53 | 23.57 | a | 31.90 | ||||||||
1982 | 21.81 | 24.50 | 26.84 | 27.40 | 30.57 | a | 41.83 | 43.23 | 41.93 | a | 36.93 | c | 31.29 | 24.21 | a | 20.45 | b | 30.91 | ||||||||
1983 | 27.23 | a | 31.07 | 34.00 | a | 27.80 | 33.90 | a | 40.03 | a | 43.50 | a | 44.84 | 32.73 | 25.61 | 33.07 | a | 13.42 | 32.27 | |||||||
1984 | 22.30 | a | 27.76 | 29.45 | b | 28.57 | 32.27 | a | 37.50 | 39.55 | 40.84 | 35.55 | a | 28.81 | 28.83 | 15.74 | 30.60 | |||||||||
1985 | 20.00 | 15.21 | 23.30 | a | 29.23 | 33.97 | a | 38.70 | 43.65 | 38.97 | a | 34.00 | 29.50 | a | 14.39 | b | 11.90 | a | 27.73 | |||||||
1986 | 21.45 | 21.81 | a | 30.00 | 26.87 | 35.32 | 44.13 | 38.45 | 42.97 | 34.47 | 28.58 | 31.28 | a | 21.77 | a | 31.42 | ||||||||||
1987 | 19.06 | 26.00 | a | 28.68 | 30.73 | 36.48 | b | 40.87 | 45.13 | 38.10 | 34.43 | 23.35 | 29.00 | 19.83 | a | 30.97 | ||||||||||
1988 | 20.33 | a | 20.36 | a | 26.16 | 32.10 | 35.29 | 40.66 | a | 43.50 | a | 39.45 | 33.70 | 31.68 | 30.83 | 22.17 | a | 31.35 | ||||||||
1989 | 25.81 | 12.71 | 28.06 | 32.83 | 33.50 | a | 42.50 | 41.90 | 43.03 | b | 34.10 | 28.77 | 31.37 | 24.21 | b | 31.57 | ||||||||||
1990 | 28.42 | 22.54 | b | 27.16 | 31.97 | 34.93 | b | 42.33 | 44.77 | 44.00 | 36.43 | b | 28.40 | a | 29.14 | b | 17.48 | 32.30 | ||||||||
1991 | 20.77 | 30.30 | a | 26.83 | a | 29.97 | a | 33.66 | b | 37.65 | d | 42.85 | e | 45.80 | a | 34.70 | c | 26.67 | a | 30.11 | c | 26.67 | a | 32.16 | ||
1992 | 27.93 | a | 30.86 | 28.20 | a | 33.97 | a | 35.90 | 43.75 | b | 43.83 | b | 42.00 | b | 36.27 | d | 31.38 | b | 28.72 | a | 18.48 | 33.44 | ||||
1993 | 14.27 | a | 17.14 | 27.45 | 33.53 | 42.03 | 43.17 | a | 39.76 | f | 41.07 | a | 30.88 | d | 28.12 | e | 13.14 | a | 25.57 | a | 28.76 | a | ||||
1994 | 27.39 | 23.31 | b | 27.55 | b | 32.48 | a | 36.22 | d | 39.66 | a | 42.17 | g | 40.96 | c | 36.04 | c | 27.07 | c | 25.13 | 23.03 | a | 30.80 | a | ||
1995 | ----- | z | 27.76 | c | 28.13 | a | 28.00 | c | 35.61 | 39.07 | c | 44.87 | a | ----- | z | 38.14 | a | 29.89 | c | 32.14 | b | 25.68 | 32.93 | b | ||
1996 | 24.84 | ----- | z | 27.14 | c | 32.79 | b | 32.86 | b | 37.23 | 44.90 | 40.50 | a | 32.97 | a | 30.74 | 24.56 | e | 20.97 | 31.77 | a | |||||
1997 | 21.61 | 24.44 | a | 30.45 | 29.80 | 37.37 | a | 39.38 | a | 43.42 | 46.56 | f | 38.96 | b | 32.00 | b | 29.62 | a | 24.00 | a | 31.91 | a | ||||
1998 | 25.03 | b | 28.74 | a | 27.93 | b | 30.72 | a | 38.20 | a | 41.07 | a | 48.73 | a | 42.74 | 38.52 | c | 29.06 | 33.56 | c | 23.23 | a | 33.96 | |||
1999 | 27.77 | 27.57 | 28.58 | 27.31 | a | 32.13 | 39.87 | 41.52 | 46.90 | 30.14 | b | 27.71 | 31.93 | a | 29.50 | c | 32.58 | |||||||||
2000 | 20.90 | 23.93 | a | 26.87 | a | 31.03 | 37.35 | 38.83 | 40.80 | a | 39.00 | 36.41 | c | 30.00 | b | 22.57 | 23.26 | 30.91 | ||||||||
2001 | 21.27 | a | 22.67 | a | 26.77 | 28.69 | a | 34.97 | 39.27 | 43.14 | c | 43.46 | c | 36.59 | a | 29.14 | b | 28.90 | a | 26.20 | a | 31.75 | ||||
2002 | 25.33 | a | 24.26 | a | 25.26 | 28.90 | a | 34.97 | a | 43.77 | 44.58 | 38.86 | c | 33.33 | 21.79 | b | 25.30 | 29.71 | 31.34 | |||||||
2003 | 29.23 | 24.80 | c | 32.35 | 32.77 | ----- | z | 40.24 | a | 43.10 | a | 40.82 | c | 35.92 | f | 37.70 | a | 25.89 | c | ----- | z | 34.10 | c | |||
2004 | 27.10 | b | ----- | z | 31.96 | c | 29.82 | b | 38.95 | i | ----- | z | ----- | z | ----- | z | ----- | z | 31.61 | c | 22.93 | c | 26.04 | f | 28.68 | g |
2005 | 24.55 | ----- | z | 25.70 | u | 31.57 | 39.87 | 38.70 | 44.90 | a | 42.17 | b | 34.86 | a | 36.09 | h | 32.93 | c | 25.19 | d | 34.97 | c | ||||
2006 | 38.93 | d | 26.58 | d | 34.69 | b | 32.69 | d | 35.17 | b | 41.96 | b | 44.13 | 40.20 | a | 33.54 | d | 26.27 | a | 34.77 | d | 27.08 | e | 34.67 | ||
2007 | 20.40 | a | 29.62 | d | 33.52 | d | 30.00 | f | 33.41 | b | 39.97 | a | 47.71 | 42.14 | b | 33.68 | e | 32.04 | g | 25.65 | g | 22.41 | i | 35.06 | d | |
2008 | 17.12 | g | 26.42 | e | 26.56 | f | 27.75 | b | 37.19 | d | 37.47 | 42.71 | 44.13 | a | 35.17 | 30.04 | d | 37.44 | u | 22.00 | k | 35.11 | d | |||
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.67 | 27.23 | a | 26.22 | c | 15.93 | a | 26.01 | h | |
2010 | 28.17 | b | 26.96 | b | 22.66 | b | 26.30 | c | 25.92 | r | 35.00 | c | 38.22 | d | 35.09 | t | 35.86 | b | 31.09 | i | 21.62 | a | 24.47 | a | 28.81 | c |
2011 | 17.73 | a | 18.78 | a | 25.30 | a | 25.43 | 27.67 | a | 33.97 | 39.45 | 43.07 | a | 36.27 | 28.87 | 19.77 | 15.35 | 27.64 | ||||||||
2012 | 19.58 | 21.79 | 25.71 | 32.47 | 30.03 | a | 38.23 | 46.13 | a | 47.74 | 32.92 | r | ----- | z | ----- | z | ----- | z | 32.71 | d | ||||||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.59 | 24.46 | 28.15 | 30.12 | 34.85 | 39.84 | 43.11 | 41.97 | 35.04 | 28.98 | 27.27 | 22.40 | 31.50 | |||||||||||||
S.D. | 5.54 | 4.50 | 2.89 | 2.37 | 2.88 | 2.46 | 2.51 | 2.53 | 2.01 | 2.95 | 5.26 | 4.75 | 1.70 | |||||||||||||
SKEW | -0.03 | -0.79 | 0.60 | -0.16 | -0.04 | -0.24 | -0.08 | 0.38 | -0.25 | 0.22 | -0.99 | -0.55 | -0.62 | |||||||||||||
MAX | 38.93 | 31.07 | 34.69 | 33.97 | 42.03 | 44.13 | 48.73 | 47.74 | 38.96 | 37.70 | 34.77 | 29.71 | 34.67 | |||||||||||||
MIN | 8.61 | 12.71 | 22.66 | 25.43 | 27.67 | 33.97 | 38.22 | 37.58 | 30.14 | 21.79 | 13.14 | 11.90 | 27.64 | |||||||||||||
YRS | 30 | 29 | 30 | 31 | 29 | 31 | 29 | 28 | 31 | 30 | 31 | 29 | 20 |