YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.60 | a | 58.78 | ----- | z | ----- | z | ----- | z | 63.69 | j | |
1982 | 35.24 | 36.11 | a | 42.20 | c | 46.21 | a | 53.61 | c | 63.16 | e | 65.25 | c | 67.40 | b | 58.66 | h | 48.48 | b | 34.53 | 31.21 | 47.58 | a | |||
1983 | 37.73 | 37.83 | a | 44.15 | a | 47.54 | b | 57.05 | b | 59.40 | e | 62.50 | e | 62.54 | c | 50.84 | a | 45.81 | b | 42.66 | a | 25.31 | 47.78 | |||
1984 | 34.21 | 36.83 | 43.71 | 44.25 | 49.55 | 56.13 | 63.85 | 64.18 | 55.97 | a | 45.31 | 38.03 | a | 31.63 | 46.97 | |||||||||||
1985 | 28.26 | 34.27 | 39.97 | a | 48.47 | 52.42 | 58.32 | 68.06 | 61.60 | a | 52.67 | 47.69 | 31.17 | c | 22.81 | 45.47 | ||||||||||
1986 | 35.26 | 36.68 | 45.97 | b | 45.57 | 54.18 | a | 62.79 | a | 60.74 | 67.72 | a | 54.35 | 50.98 | 41.61 | c | 32.05 | a | 48.99 | |||||||
1987 | 31.12 | c | 37.15 | b | 41.77 | a | 50.50 | a | 55.58 | a | 61.16 | a | 62.37 | 63.60 | 60.36 | a | 52.82 | 41.17 | a | 32.34 | 49.16 | |||||
1988 | 31.21 | 38.91 | 42.39 | 48.38 | 51.72 | b | 57.41 | a | 64.48 | 62.69 | 58.60 | 54.85 | e | 41.36 | a | 35.41 | b | 48.95 | ||||||||
1989 | 38.40 | b | 27.96 | c | 39.89 | c | 50.27 | b | 52.57 | c | 60.43 | 60.94 | 61.68 | 58.75 | 48.81 | 43.77 | b | 34.83 | d | 48.19 | ||||||
1990 | 37.77 | c | 34.67 | g | 43.61 | 50.70 | 51.42 | 59.11 | b | 67.28 | a | 66.22 | a | 61.95 | 48.04 | d | 43.96 | f | 26.79 | g | 54.01 | c | ||||
1991 | 34.48 | d | 42.12 | c | 39.73 | a | 46.00 | b | 50.10 | 55.32 | 65.02 | 66.52 | a | 60.60 | a | 50.20 | a | 40.42 | e | 36.48 | d | 48.92 | ||||
1992 | 38.35 | 41.31 | 46.19 | 49.60 | 56.77 | a | 63.62 | 64.74 | 64.73 | a | 56.80 | 50.47 | a | 40.06 | d | 30.68 | f | 52.06 | a | |||||||
1993 | 26.70 | d | 30.12 | 40.53 | b | 46.19 | a | 56.80 | a | 57.71 | b | 58.52 | a | 62.50 | 59.29 | a | 52.43 | b | 34.48 | 33.75 | a | 46.59 | ||||
1994 | 39.53 | 34.27 | 43.19 | 49.27 | 55.14 | c | 57.13 | 66.52 | 63.61 | 61.72 | 48.36 | b | 36.33 | a | 34.68 | 49.15 | ||||||||||
1995 | 33.31 | 40.83 | a | 41.60 | 45.12 | a | 54.48 | a | 57.68 | 65.03 | a | 60.77 | 61.29 | a | 47.90 | 45.25 | b | 34.23 | 48.96 | |||||||
1996 | 36.55 | b | 34.77 | c | 42.21 | 48.68 | 49.88 | a | 57.55 | b | 67.52 | 66.00 | b | 56.45 | 48.90 | 39.29 | a | 33.61 | c | 48.45 | ||||||
1997 | 33.73 | c | 38.45 | 42.35 | a | 45.52 | a | 56.75 | a | 58.88 | 64.47 | 67.03 | a | 60.87 | 50.26 | 42.47 | a | 35.66 | 49.70 | |||||||
1998 | 37.25 | e | 39.15 | b | 43.39 | ----- | z | ----- | z | 59.91 | c | 68.28 | a | 66.18 | 61.54 | b | 47.48 | a | 42.43 | c | 35.06 | e | 50.07 | b | ||
1999 | 39.94 | g | 38.70 | e | 40.57 | b | 46.14 | e | 50.46 | c | 57.96 | e | 63.40 | e | 65.91 | c | 57.93 | 48.74 | 42.39 | b | 38.31 | d | 50.05 | a | ||
2000 | 33.43 | b | 36.98 | 41.12 | a | 49.83 | c | 52.85 | a | 59.64 | a | 63.20 | a | 62.66 | b | 58.28 | c | 48.61 | 35.14 | b | 32.76 | f | 49.25 | a | ||
2001 | 33.83 | b | 35.92 | d | 43.48 | a | 45.85 | 55.29 | 56.23 | b | 62.95 | a | 64.84 | 60.00 | a | 48.28 | b | 41.03 | a | 34.60 | b | 48.53 | ||||
2002 | 35.74 | b | 38.56 | b | 39.62 | e | 47.40 | a | 51.72 | a | 60.25 | 66.88 | b | 62.83 | a | 57.84 | a | 47.57 | b | 38.31 | c | 35.66 | c | 48.53 | ||
2003 | 38.20 | d | 38.89 | e | 44.55 | b | 45.68 | 53.23 | a | 61.61 | b | 66.89 | 64.97 | 60.80 | 52.79 | c | 36.71 | b | 34.52 | d | 49.90 | |||||
2004 | 31.74 | d | 38.24 | d | 45.95 | a | 49.45 | 54.05 | 60.83 | 66.87 | a | 67.26 | b | 57.50 | 51.17 | a | 41.41 | c | 37.55 | b | 50.17 | |||||
2005 | 35.68 | c | 38.48 | c | 46.36 | b | 47.63 | 55.47 | a | 57.07 | a | 64.82 | c | 65.35 | a | 56.66 | b | 50.06 | d | 38.17 | c | 30.39 | c | 48.84 | ||
2006 | 38.46 | d | 37.13 | e | 40.95 | a | 47.65 | ----- | z | 60.62 | 67.41 | d | 63.40 | b | 59.09 | a | 48.47 | a | 39.80 | g | 32.10 | a | 49.53 | b | ||
2007 | 31.86 | c | 37.96 | b | 46.09 | c | 46.48 | c | 54.84 | c | 58.36 | b | 67.75 | a | 62.70 | c | 57.50 | e | 47.57 | d | 40.78 | g | 34.73 | a | 49.62 | a |
2008 | 31.04 | d | 40.00 | 40.56 | 43.03 | a | 55.43 | d | 57.98 | c | 65.34 | b | 65.19 | d | 58.55 | 49.02 | a | 42.48 | c | 33.21 | g | 49.87 | a | |||
2009 | 34.35 | e | 35.25 | 38.97 | b | 45.95 | a | 55.15 | d | 60.78 | 67.84 | 65.39 | 59.95 | a | 46.87 | 40.00 | 28.45 | 48.24 | ||||||||
2010 | 37.11 | 39.48 | 42.66 | 45.62 | a | 50.15 | 57.14 | b | 63.98 | 63.30 | a | 56.87 | 48.47 | 37.27 | 31.92 | 47.83 | ||||||||||
2011 | 35.26 | 34.18 | 38.58 | 41.35 | 48.74 | 56.10 | 60.66 | 63.92 | a | 61.45 | 48.98 | 38.02 | 32.47 | 46.64 | ||||||||||||
2012 | 32.53 | 35.60 | 38.63 | 46.12 | 50.15 | 56.02 | 63.53 | 64.55 | 59.33 | 48.10 | 39.67 | 33.44 | 47.30 | |||||||||||||
2013 | 29.27 | 37.88 | 42.12 | a | 47.12 | 54.28 | a | 60.38 | 66.27 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.19 | e | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.44 | 37.10 | 42.28 | 47.02 | 53.33 | 58.96 | 64.79 | 64.56 | 58.47 | 49.14 | 39.49 | 33.08 | 48.33 | |||||||||||||
S.D. | 3.23 | 2.97 | 2.31 | 2.19 | 2.47 | 2.19 | 2.48 | 1.98 | 2.61 | 2.09 | 3.24 | 3.40 | 1.17 | |||||||||||||
SKEW | -0.50 | -1.13 | 0.24 | -0.29 | -0.23 | 0.36 | -0.57 | 0.12 | -1.03 | 0.79 | -0.60 | -1.33 | -0.69 | |||||||||||||
MAX | 39.53 | 42.12 | 46.36 | 50.70 | 57.05 | 63.62 | 68.28 | 68.60 | 61.95 | 54.85 | 45.25 | 38.31 | 50.17 | |||||||||||||
MIN | 26.70 | 27.96 | 38.58 | 41.35 | 48.74 | 55.32 | 58.52 | 60.77 | 50.84 | 45.31 | 31.17 | 22.81 | 45.47 | |||||||||||||
YRS | 31 | 31 | 32 | 31 | 30 | 32 | 32 | 32 | 31 | 31 | 28 | 27 | 22 |