YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.56 | m | 77.89 | 73.66 | 63.62 | ----- | z | 37.80 | b | 36.10 | b | 57.81 | g | |||
1981 | 32.57 | a | 31.43 | a | 39.74 | 54.53 | 57.33 | a | 71.69 | a | 76.24 | 71.53 | 65.68 | 52.71 | 43.17 | 31.10 | 52.31 | |||||||||
1982 | 26.93 | b | 26.83 | b | 40.30 | c | 47.88 | d | 57.92 | a | 64.91 | a | 74.23 | 73.79 | 64.50 | a | 48.50 | a | 35.10 | a | 28.33 | a | 49.10 | |||
1983 | 29.40 | 34.50 | a | 37.90 | 43.22 | a | 54.66 | b | 66.04 | c | 77.18 | a | 76.95 | 65.57 | b | 52.07 | c | 38.29 | a | 17.38 | b | 49.43 | ||||
1984 | 25.46 | e | 33.98 | a | 36.66 | c | 44.63 | c | 60.59 | c | 69.22 | a | 75.50 | a | 73.62 | b | 60.22 | g | 47.52 | b | 39.33 | c | 30.16 | 48.79 | a | |
1985 | 22.69 | d | 25.10 | d | 41.44 | d | 52.34 | a | 61.40 | a | 69.69 | c | 74.65 | 72.74 | 62.33 | f | 49.37 | a | 31.16 | a | 25.35 | 47.81 | a | |||
1986 | 37.03 | 35.54 | a | 46.60 | 53.15 | c | 59.50 | 70.90 | a | 76.23 | 72.81 | 63.87 | 50.41 | c | 37.10 | 30.24 | 52.78 | |||||||||
1987 | 29.80 | a | 36.93 | 38.19 | 51.90 | 61.58 | 70.18 | 75.69 | 72.25 | a | 64.68 | 52.81 | 39.83 | 28.13 | 51.83 | |||||||||||
1988 | 15.57 | a | 29.35 | b | 38.73 | 49.47 | 60.11 | 72.78 | 75.35 | 75.69 | 63.55 | 53.53 | 40.15 | 28.52 | a | 50.23 | ||||||||||
1989 | 30.43 | b | 27.00 | c | 44.03 | 50.93 | 61.44 | 65.95 | 76.74 | 73.03 | 63.90 | 52.97 | 40.30 | 24.85 | 50.96 | |||||||||||
1990 | 29.45 | 30.46 | 40.10 | 50.52 | 56.45 | 73.98 | 73.34 | 72.02 | 69.02 | 51.39 | 41.43 | 23.39 | 50.96 | |||||||||||||
1991 | 26.40 | 38.09 | a | 40.42 | 49.53 | 61.90 | 72.25 | 74.02 | 72.60 | 64.08 | 51.73 | 32.88 | 30.16 | 51.17 | ||||||||||||
1992 | 28.60 | 37.19 | 43.98 | 53.13 | 61.34 | 66.40 | a | 72.79 | 70.32 | 64.78 | 53.71 | 32.87 | 26.25 | a | 50.95 | |||||||||||
1993 | 22.68 | 29.82 | 41.13 | 49.23 | 59.26 | 69.73 | 76.10 | 72.03 | a | 60.15 | 49.10 | 29.28 | 31.78 | d | 49.19 | |||||||||||
1994 | 29.69 | 27.43 | 41.71 | 46.67 | 60.69 | 72.75 | 72.97 | 74.66 | 60.88 | 48.18 | 33.12 | 30.39 | 49.93 | |||||||||||||
1995 | 26.53 | 32.62 | 36.18 | 39.37 | 49.82 | 66.69 | d | 72.42 | e | 76.42 | a | 63.28 | 50.65 | 40.63 | 32.37 | 48.92 | ||||||||||
1996 | 27.05 | 32.02 | a | 36.73 | 50.10 | 63.93 | a | 71.63 | 74.48 | 73.05 | 63.28 | a | 53.23 | 37.53 | 31.52 | 51.21 | ||||||||||
1997 | 26.66 | 32.13 | a | 42.73 | 44.10 | 59.14 | b | 70.58 | 76.12 | a | 72.11 | 64.75 | f | 50.40 | 35.02 | 28.24 | 48.84 | a | ||||||||
1998 | 31.79 | 35.52 | 37.97 | 46.87 | 63.00 | 68.12 | 76.57 | a | 72.16 | 69.77 | 53.03 | 42.41 | a | 28.60 | 52.15 | |||||||||||
1999 | 33.31 | 38.27 | 42.97 | b | 47.08 | 57.95 | a | 67.73 | 75.39 | 73.35 | 62.29 | a | 50.17 | e | 43.89 | g | 32.56 | 52.83 | a | |||||||
2000 | 32.15 | a | 38.34 | 42.56 | 50.67 | 61.82 | a | 69.80 | 76.85 | 77.50 | j | 66.37 | 53.69 | 32.95 | 26.87 | e | 50.19 | a | ||||||||
2001 | 32.59 | n | 31.25 | 39.19 | b | 54.21 | f | 59.19 | 71.25 | 79.00 | 74.68 | i | 66.58 | 52.42 | 42.73 | 31.90 | 52.61 | c | ||||||||
2002 | 29.24 | 31.27 | 36.15 | 51.93 | 60.31 | 74.52 | 79.05 | 75.06 | 66.40 | 47.87 | d | 38.53 | a | 31.53 | 51.82 | |||||||||||
2003 | 34.00 | a | 30.25 | 42.37 | 53.18 | 61.50 | 67.80 | 80.44 | 76.98 | 63.14 | a | 55.61 | 37.03 | 33.31 | d | 52.97 | ||||||||||
2004 | 30.77 | 31.29 | 46.79 | 49.85 | 62.85 | 68.12 | b | 72.23 | 69.18 | 64.31 | a | 52.56 | 37.58 | 31.92 | a | 51.46 | ||||||||||
2005 | 31.29 | 34.43 | 40.03 | a | 49.28 | e | 60.12 | a | 70.15 | 77.23 | 73.35 | 68.40 | a | 54.37 | e | 42.31 | a | 29.94 | 52.57 | |||||||
2006 | 34.89 | 31.04 | 40.84 | 52.52 | 62.52 | 73.45 | 77.20 | d | 73.50 | a | 59.88 | 52.21 | e | 40.52 | e | 29.44 | d | 52.33 | ||||||||
2007 | 22.31 | 30.31 | a | 46.02 | 47.24 | a | 60.89 | 68.82 | 75.50 | 76.05 | 65.48 | a | 54.04 | c | 39.33 | a | 24.81 | 50.90 | ||||||||
2008 | 26.91 | b | 30.64 | 40.05 | 47.43 | 59.13 | a | 69.17 | 77.11 | 72.37 | 63.55 | 52.12 | e | 41.37 | 28.56 | 50.70 | ||||||||||
2009 | 29.94 | e | 35.09 | f | 41.17 | b | 49.10 | 60.92 | a | 68.84 | a | 74.65 | 71.97 | a | 62.85 | 43.93 | b | 41.88 | 23.19 | 51.68 | a | |||||
2010 | 30.43 | a | 28.57 | 41.10 | 51.05 | 58.16 | 73.53 | 77.07 | c | 74.39 | 67.57 | 54.02 | 37.30 | 32.63 | 52.15 | |||||||||||
2011 | 26.19 | 26.89 | 42.23 | 50.23 | 56.55 | 72.59 | a | 79.37 | a | 77.53 | 64.92 | 52.23 | 38.80 | 24.73 | a | 51.02 | ||||||||||
2012 | 33.06 | 30.91 | 46.53 | 53.70 | 62.40 | 76.17 | a | 79.92 | 74.74 | 65.77 | 50.39 | 43.35 | 29.03 | b | 53.83 | |||||||||||
2013 | 28.50 | 31.36 | 38.82 | 44.57 | 59.83 | d | 73.47 | 75.21 | 75.44 | 69.13 | 50.83 | a | 38.93 | 28.56 | 51.22 | |||||||||||
2014 | 28.60 | 26.14 | 39.18 | 48.85 | d | 60.02 | 71.10 | 74.43 | c | 72.92 | 65.48 | 55.21 | 35.25 | 29.82 | 50.58 | |||||||||||
2015 | 29.60 | a | 32.89 | 42.03 | 51.38 | 55.65 | a | 70.98 | 72.79 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.09 | f | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.82 | 31.76 | 40.93 | 49.28 | 59.71 | 70.31 | 75.98 | 73.58 | 64.77 | 51.56 | 38.10 | 28.91 | 51.21 | |||||||||||||
S.D. | 4.12 | 3.60 | 2.90 | 3.37 | 2.76 | 2.70 | 2.09 | 1.92 | 2.40 | 2.48 | 3.64 | 3.58 | 1.24 | |||||||||||||
SKEW | -0.86 | 0.21 | 0.36 | -0.86 | -1.45 | -0.02 | 0.20 | 0.20 | 0.13 | -0.90 | -0.59 | -0.93 | -0.09 | |||||||||||||
MAX | 37.03 | 38.34 | 46.79 | 54.53 | 63.93 | 76.17 | 80.44 | 77.53 | 69.77 | 55.61 | 43.35 | 36.10 | 53.83 | |||||||||||||
MIN | 15.57 | 25.10 | 36.15 | 39.37 | 49.82 | 64.91 | 72.23 | 69.18 | 59.88 | 43.93 | 29.28 | 17.38 | 48.92 | |||||||||||||
YRS | 34 | 34 | 35 | 34 | 35 | 35 | 35 | 33 | 32 | 34 | 34 | 35 | 27 |