YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.58 | 43.70 | ----- | z | ----- | z | ----- | z | 47.14 | j | ||
1982 | 27.97 | 27.25 | 30.29 | c | 33.24 | a | 38.47 | a | 48.81 | d | 49.97 | b | 51.52 | 45.60 | e | 37.65 | 27.63 | 25.39 | 36.98 | |||||||
1983 | 31.13 | 32.36 | 35.16 | 34.17 | 40.90 | 47.59 | a | 50.32 | 47.42 | 35.83 | 34.45 | b | 36.10 | a | 19.19 | 37.05 | ||||||||||
1984 | 26.19 | 29.69 | 34.32 | 34.47 | 38.77 | 43.80 | 45.55 | 47.65 | 42.30 | 35.29 | 31.17 | a | 25.10 | 36.19 | ||||||||||||
1985 | 24.26 | 24.89 | 28.42 | 35.70 | 39.35 | 43.63 | 50.77 | 46.52 | 39.43 | 36.19 | 23.96 | c | 17.06 | 34.18 | ||||||||||||
1986 | 29.00 | 29.14 | 35.60 | a | 33.83 | 41.71 | 48.77 | 47.71 | 50.30 | a | 41.97 | 36.65 | 34.38 | a | 27.16 | 38.02 | ||||||||||
1987 | 25.10 | 30.52 | a | 32.87 | a | 37.66 | a | 42.06 | 45.55 | a | 49.06 | 46.48 | 42.72 | a | 35.00 | 32.17 | a | 25.71 | 37.08 | |||||||
1988 | 24.42 | 27.48 | 31.71 | 37.20 | 39.40 | a | 43.67 | 48.13 | 45.26 | 42.73 | 40.63 | d | 34.03 | a | 27.93 | a | 36.88 | |||||||||
1989 | 30.39 | 19.04 | 30.80 | a | 37.27 | 39.31 | b | 45.63 | 46.29 | 48.00 | 41.47 | 35.84 | 35.25 | b | 27.83 | a | 36.43 | |||||||||
1990 | 31.24 | b | 24.48 | c | 32.00 | 37.50 | 39.55 | 47.07 | b | 50.06 | 50.74 | 44.23 | 36.27 | a | 35.88 | d | 19.24 | b | 37.36 | |||||||
1991 | 25.97 | a | 33.57 | 29.71 | 34.23 | 39.45 | 43.37 | 48.58 | 50.50 | a | 42.76 | a | 35.68 | 32.63 | c | 30.81 | 37.27 | |||||||||
1992 | 31.97 | 34.38 | 33.52 | 38.53 | 41.93 | a | 48.57 | 50.03 | 47.90 | 43.20 | 36.93 | a | 33.23 | 23.81 | 38.67 | |||||||||||
1993 | 18.43 | a | 22.57 | 31.03 | 36.24 | a | 43.29 | 45.53 | 46.97 | a | 47.19 | 40.90 | a | 37.72 | b | 22.27 | 28.67 | a | 35.07 | |||||||
1994 | 30.10 | 26.86 | 30.58 | 37.47 | 41.43 | c | 42.97 | 48.48 | 47.84 | 44.10 | 34.48 | b | 28.83 | a | 28.16 | 36.77 | ||||||||||
1995 | 27.35 | 30.86 | 30.74 | 33.62 | a | 41.35 | 44.90 | 51.03 | a | 45.61 | 45.41 | a | 35.97 | 36.66 | a | 28.55 | 37.67 | |||||||||
1996 | 28.80 | a | 24.93 | b | 31.39 | 37.37 | 38.60 | a | 42.55 | a | 49.74 | 49.53 | a | 41.57 | 36.45 | 31.47 | 25.13 | a | 36.46 | |||||||
1997 | 25.53 | a | 28.89 | 32.32 | 33.30 | 41.20 | a | 43.70 | 46.94 | 48.67 | a | 44.20 | 37.03 | 33.45 | a | 27.16 | 36.87 | |||||||||
1998 | 30.23 | a | 30.39 | 28.77 | ----- | z | ----- | z | 44.83 | 52.07 | a | 48.42 | 44.39 | b | 34.77 | 34.76 | a | 25.68 | 37.43 | b | ||||||
1999 | 30.93 | a | 30.25 | 30.16 | 31.73 | 37.29 | 45.41 | a | 46.00 | 50.71 | 39.57 | 34.19 | 34.69 | a | 31.61 | 36.88 | ||||||||||
2000 | 27.68 | 29.28 | 29.97 | 36.20 | 40.65 | 43.80 | 47.35 | 46.27 | a | 43.63 | 36.65 | 28.03 | 26.81 | 36.36 | ||||||||||||
2001 | 27.58 | 27.37 | a | 32.55 | 33.93 | 39.19 | 43.10 | 48.33 | a | 48.32 | 43.07 | a | 34.87 | a | 32.57 | 29.19 | 36.67 | |||||||||
2002 | 28.90 | 28.79 | 29.23 | a | 35.17 | 38.61 | 46.10 | 50.14 | b | 46.03 | 40.86 | a | 31.84 | 28.41 | c | 30.94 | 36.25 | |||||||||
2003 | 32.23 | 28.00 | 34.74 | 34.67 | 39.58 | 45.37 | 48.90 | 48.16 | 44.17 | 39.40 | a | 27.80 | 29.00 | 37.67 | ||||||||||||
2004 | 24.87 | 29.59 | 33.42 | 33.97 | 41.84 | 46.27 | 50.39 | 52.19 | 44.10 | 38.84 | 31.59 | a | 31.00 | 38.17 | ||||||||||||
2005 | 26.55 | 25.56 | a | 32.97 | 36.50 | 43.94 | 43.97 | 48.39 | 47.32 | 40.87 | 38.55 | b | 30.27 | 23.94 | 36.57 | |||||||||||
2006 | 32.19 | 26.07 | 30.74 | 35.00 | ----- | z | 46.70 | 50.13 | 46.06 | 41.43 | 33.87 | a | 33.07 | a | 25.52 | 36.44 | a | |||||||||
2007 | 24.17 | a | 30.21 | 35.00 | 34.50 | 39.10 | a | 45.13 | 52.10 | 46.97 | 41.53 | 34.80 | a | 30.43 | b | 28.42 | 36.86 | |||||||||
2008 | 22.52 | 30.07 | 30.68 | 31.27 | 42.48 | 42.23 | 47.97 | 49.97 | 40.67 | 35.68 | 33.87 | 23.30 | a | 35.89 | ||||||||||||
2009 | 25.68 | 27.29 | 29.68 | 33.30 | 39.13 | a | 46.97 | 50.00 | 48.94 | 43.80 | 35.00 | 31.00 | 21.06 | 35.99 | ||||||||||||
2010 | 31.03 | 31.21 | 31.35 | 35.23 | 38.32 | 43.90 | 46.84 | 47.35 | 45.23 | 37.74 | 30.67 | 27.97 | 37.24 | |||||||||||||
2011 | 27.26 | 24.96 | 32.23 | 33.13 | 37.97 | 44.10 | 46.26 | 47.42 | 46.03 | 40.03 | 29.80 | 23.71 | 36.08 | |||||||||||||
2012 | 24.52 | 28.72 | 30.71 | 36.17 | 38.26 | 44.67 | 47.94 | 46.45 | 41.60 | 37.16 | 34.23 | 28.58 | 36.58 | |||||||||||||
2013 | 22.90 | 29.32 | 31.80 | a | 36.73 | 41.20 | a | 47.37 | 47.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.70 | e | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.41 | 28.25 | 31.70 | 35.14 | 40.15 | 45.19 | 48.75 | 48.20 | 42.60 | 36.31 | 31.62 | 26.25 | 36.76 | |||||||||||||
S.D. | 3.30 | 3.16 | 1.90 | 1.84 | 1.70 | 1.83 | 1.75 | 1.83 | 2.12 | 1.92 | 3.40 | 3.59 | 0.89 | |||||||||||||
SKEW | -0.46 | -0.64 | 0.42 | -0.08 | 0.43 | 0.44 | 0.04 | 0.46 | -0.89 | 0.27 | -0.88 | -0.81 | -0.53 | |||||||||||||
MAX | 32.23 | 34.38 | 35.60 | 38.53 | 43.94 | 48.81 | 52.10 | 52.19 | 46.03 | 40.63 | 36.66 | 31.61 | 38.67 | |||||||||||||
MIN | 18.43 | 19.04 | 28.42 | 31.27 | 37.29 | 42.23 | 45.55 | 45.26 | 35.83 | 31.84 | 22.27 | 17.06 | 34.18 | |||||||||||||
YRS | 32 | 32 | 32 | 31 | 30 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 29 |