YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.39 | 40.45 | 27.79 | 39.54 | i | |||
1977 | 19.23 | 31.87 | a | 39.37 | 52.85 | 52.68 | 70.15 | 70.87 | 71.60 | 60.07 | 49.00 | ----- | z | 35.92 | 50.33 | a | ||||||||||
1978 | 34.52 | a | 36.23 | ----- | z | 47.81 | a | 54.60 | a | 63.95 | 71.88 | a | 68.12 | a | 58.07 | a | 50.32 | a | 33.60 | a | 25.89 | 49.54 | a | |||
1979 | 14.98 | a | 31.48 | 42.60 | 47.53 | 58.16 | 65.62 | 72.12 | a | 68.58 | 63.37 | 51.50 | 32.63 | 31.82 | 48.37 | |||||||||||
1980 | 28.52 | 35.90 | 39.32 | a | 51.42 | 55.71 | ----- | z | 71.16 | 65.15 | 56.67 | ----- | z | ----- | z | 29.55 | 48.15 | c | ||||||||
1981 | 31.71 | 34.73 | 41.66 | 47.72 | a | 54.39 | 61.57 | ----- | z | 72.29 | 64.22 | ----- | z | ----- | z | 35.52 | 49.31 | c | ||||||||
1982 | 25.11 | 30.43 | 42.25 | a | 46.17 | 55.97 | 66.62 | 70.95 | 72.67 | a | 59.71 | b | 48.94 | 36.10 | a | 31.05 | 48.83 | |||||||||
1983 | 32.58 | 40.25 | 45.00 | 47.09 | a | 57.27 | a | 64.83 | 70.07 | a | 74.31 | 60.36 | a | 51.90 | 42.95 | 25.16 | 50.98 | |||||||||
1984 | 23.73 | 30.10 | 43.06 | 47.75 | 55.81 | 63.23 | 74.52 | 75.47 | 58.78 | 46.81 | 39.77 | 23.44 | 48.54 | |||||||||||||
1985 | 19.89 | 26.61 | 37.35 | 53.22 | 59.63 | 67.83 | 77.60 | 68.37 | ----- | z | 47.29 | 28.53 | 14.11 | 45.49 | a | |||||||||||
1986 | 27.15 | 40.39 | 48.68 | 49.60 | 59.32 | 72.72 | a | 69.62 | a | 75.27 | 58.02 | c | 51.52 | 41.55 | 29.27 | a | 51.93 | |||||||||
1987 | 27.42 | 37.55 | 44.42 | 56.60 | 62.84 | 68.80 | 70.67 | a | 69.29 | 63.55 | 53.16 | 41.45 | 33.44 | 52.43 | ||||||||||||
1988 | 25.50 | 36.03 | 43.47 | 52.38 | 58.34 | 70.28 | 74.68 | 70.87 | 59.85 | 58.11 | 41.03 | 28.06 | 51.55 | |||||||||||||
1989 | 22.89 | 20.23 | b | 42.60 | a | 53.00 | 57.00 | 68.83 | 74.68 | 69.08 | 62.02 | 50.71 | 39.17 | 32.77 | 49.41 | |||||||||||
1990 | 35.05 | 33.89 | 44.45 | 55.76 | a | 55.85 | 66.37 | 74.87 | 72.55 | b | 68.17 | 49.68 | 39.50 | 17.23 | a | 51.11 | ||||||||||
1991 | 24.11 | 39.80 | 42.92 | 48.79 | a | 54.82 | 63.10 | 74.18 | 74.79 | 63.72 | c | 51.52 | a | 36.88 | 31.48 | a | 50.51 | |||||||||
1992 | 31.93 | a | 40.88 | 48.65 | a | 53.80 | 62.39 | 68.81 | c | 70.03 | a | 72.88 | c | 61.53 | 53.82 | 35.58 | 28.74 | 52.42 | ||||||||
1993 | 25.66 | 29.70 | 40.89 | 48.27 | 62.03 | a | 62.28 | 65.41 | c | 68.50 | c | 62.60 | d | 52.76 | 33.19 | a | 34.63 | 48.83 | ||||||||
1994 | 33.13 | 33.98 | a | 46.60 | 53.03 | 60.60 | 66.82 | 75.78 | b | 74.52 | a | 65.40 | 50.60 | 33.60 | 30.00 | a | 52.00 | |||||||||
1995 | 35.98 | 41.64 | 44.05 | a | 50.17 | a | 57.68 | c | ----- | z | 73.23 | 69.25 | a | 64.84 | b | 49.47 | 43.90 | a | 33.61 | 51.26 | a | |||||
1996 | 33.89 | 36.16 | a | 44.74 | b | 50.46 | b | 56.76 | 66.26 | a | 75.68 | a | ----- | z | 59.88 | 50.32 | a | 41.52 | 37.26 | d | 50.27 | a | ||||
1997 | 33.55 | 37.24 | a | 45.05 | a | 49.17 | ----- | z | 67.12 | 71.55 | a | 72.83 | a | 65.43 | a | 50.84 | 42.19 | a | 30.89 | 51.44 | a | |||||
1998 | 37.45 | 40.09 | 43.80 | a | 50.03 | a | 57.19 | 63.86 | a | 78.21 | 74.60 | 68.28 | a | 49.98 | a | 42.00 | a | 29.97 | 52.96 | |||||||
1999 | 35.07 | b | 36.20 | e | 43.61 | d | 47.09 | b | 56.34 | 65.80 | 72.18 | 73.50 | b | 62.19 | a | 53.21 | 45.72 | 33.65 | 52.05 | |||||||
2000 | 34.12 | a | 41.89 | a | 43.00 | b | 54.97 | a | 60.45 | a | ----- | z | 75.58 | a | 74.65 | 61.72 | 51.88 | a | 33.52 | a | 31.89 | 51.24 | a | |||
2001 | 27.35 | a | 33.20 | 45.95 | 48.37 | 61.85 | 67.04 | b | 74.95 | 76.53 | 66.10 | 52.10 | 44.12 | a | 31.37 | e | 52.41 | |||||||||
2002 | 32.53 | 34.04 | a | 41.03 | a | 51.15 | 57.93 | b | 69.17 | 78.06 | 70.08 | 63.66 | a | 48.98 | 39.55 | 36.55 | a | 51.89 | ||||||||
2003 | 37.69 | 37.41 | 45.98 | a | 49.66 | a | 58.93 | a | 69.58 | 79.14 | b | 75.98 | b | 64.90 | 57.63 | a | 37.59 | b | 37.97 | b | 54.37 | |||||
2004 | 28.18 | a | 34.19 | 47.90 | a | 53.50 | 58.48 | 68.80 | 76.55 | 73.47 | 62.83 | 52.97 | a | 38.70 | 34.85 | 52.54 | ||||||||||
2005 | 32.81 | 36.58 | b | 45.92 | a | 50.33 | 58.57 | a | 64.50 | 76.69 | 74.69 | ----- | z | 52.65 | 37.32 | 28.19 | 50.75 | a | ||||||||
2006 | 36.55 | a | 34.61 | 43.11 | 51.07 | a | 60.94 | 70.78 | 80.13 | a | 72.98 | 63.35 | 50.79 | 42.00 | b | 31.18 | 53.12 | |||||||||
2007 | 29.15 | 38.36 | 47.73 | c | 51.47 | a | 62.23 | 69.43 | 80.59 | c | 73.50 | 63.93 | a | 50.87 | a | 39.83 | 32.31 | 53.28 | ||||||||
2008 | 29.00 | 35.91 | 41.37 | a | 46.54 | d | 59.78 | a | 66.31 | a | 76.39 | 75.07 | a | 63.13 | 52.09 | b | 42.80 | 30.94 | 51.61 | |||||||
2009 | 31.31 | 36.17 | a | 41.45 | 49.78 | a | 60.34 | 68.02 | a | 76.48 | 72.96 | e | 67.56 | e | 47.70 | a | 40.52 | 26.07 | a | 51.53 | ||||||
2010 | 36.19 | 39.16 | 44.61 | 48.23 | 53.21 | 65.13 | 73.23 | a | 71.73 | 63.53 | 55.27 | 38.18 | 32.55 | 51.75 | ||||||||||||
2011 | 28.92 | 33.54 | 42.53 | 44.25 | 54.98 | 63.00 | 72.85 | 76.32 | 68.13 | 53.53 | 38.57 | 29.84 | 50.54 | |||||||||||||
2012 | 33.58 | 37.57 | 45.21 | 53.48 | 57.05 | 66.42 | 79.02 | 75.82 | 65.47 | 51.02 | 43.17 | 36.53 | 53.69 | |||||||||||||
2013 | 17.60 | 36.30 | 44.39 | 50.70 | 60.11 | 67.95 | 79.55 | 76.26 | 65.70 | 49.50 | 38.45 | 22.40 | 50.74 | |||||||||||||
2014 | 28.90 | 37.55 | 45.35 | 50.50 | a | 60.47 | 67.32 | 78.37 | 74.11 | 66.78 | 55.95 | 36.62 | 37.53 | 53.29 | ||||||||||||
2015 | 29.81 | d | 43.77 | 48.02 | a | 51.41 | b | 59.84 | 74.70 | 76.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.81 | e | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.56 | 35.68 | 43.90 | 50.39 | 58.17 | 67.03 | 74.57 | 72.67 | 63.15 | 51.48 | 38.95 | 30.55 | 51.52 | |||||||||||||
S.D. | 5.64 | 4.46 | 2.61 | 2.79 | 2.66 | 2.91 | 3.45 | 2.82 | 3.02 | 2.53 | 3.81 | 5.17 | 1.60 | |||||||||||||
SKEW | -0.72 | -1.08 | -0.18 | 0.16 | -0.12 | 0.32 | -0.30 | -0.71 | -0.20 | 0.69 | -0.63 | -1.17 | -0.51 | |||||||||||||
MAX | 37.69 | 43.77 | 48.68 | 56.60 | 62.84 | 74.70 | 80.59 | 76.53 | 68.28 | 58.11 | 45.72 | 37.97 | 54.37 | |||||||||||||
MIN | 14.98 | 20.23 | 37.35 | 44.25 | 52.68 | 61.57 | 65.41 | 65.15 | 56.67 | 46.81 | 28.53 | 14.11 | 48.37 | |||||||||||||
YRS | 39 | 39 | 38 | 39 | 38 | 36 | 38 | 37 | 36 | 37 | 36 | 39 | 28 |