YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.75 | c | 44.12 | f | 41.55 | a | 49.15 | j |
1981 | 38.95 | a | 40.84 | 44.37 | a | 59.35 | ----- | z | 77.46 | e | 78.45 | c | 75.48 | c | 68.86 | h | 52.43 | c | 41.59 | a | 34.44 | e | 54.34 | b | ||
1982 | 31.32 | a | 32.07 | a | 43.84 | i | 51.36 | h | 60.19 | d | ----- | z | 76.34 | 74.74 | 68.71 | b | 50.52 | 40.02 | 32.22 | a | 51.79 | c | ||||
1983 | 32.45 | b | 38.12 | b | 43.69 | b | 46.59 | b | 60.83 | d | 70.83 | a | 76.47 | b | 76.81 | b | 71.02 | b | 57.55 | 42.48 | b | 33.42 | a | 54.19 | ||
1984 | 29.95 | b | 36.13 | b | 43.57 | b | 49.40 | 69.25 | a | 71.71 | d | 79.37 | d | 76.59 | b | 68.15 | g | 49.93 | j | 41.12 | b | 32.68 | c | 52.98 | b | |
1985 | 29.52 | c | 35.33 | a | 47.18 | c | 58.73 | 66.38 | e | 78.90 | f | 80.41 | d | 79.82 | c | 65.70 | g | 56.21 | c | 42.02 | e | 35.88 | g | 55.07 | c | |
1986 | 38.58 | a | 43.34 | 51.23 | a | 55.06 | c | 64.73 | c | 76.55 | 78.57 | c | 79.05 | i | 65.74 | e | 54.14 | c | 42.67 | c | 34.41 | d | 55.00 | a | ||
1987 | 29.45 | c | 37.24 | a | 42.35 | 57.90 | e | 62.71 | g | 77.77 | b | 78.22 | b | 75.56 | d | 69.84 | b | 60.40 | 40.55 | a | 29.04 | c | 54.39 | a | ||
1988 | 26.11 | c | 37.48 | 45.19 | e | 54.13 | c | 63.16 | 74.02 | a | 80.27 | c | 75.78 | a | 67.52 | a | 62.53 | a | 42.98 | 33.57 | c | 55.23 | ||||
1989 | 26.03 | 34.48 | a | 52.34 | b | 60.76 | a | 66.29 | c | 74.72 | c | 81.12 | b | 76.79 | b | 71.12 | a | 57.96 | g | 46.81 | a | 36.09 | b | 56.96 | a | |
1990 | 30.66 | 37.68 | 48.78 | a | 57.98 | b | 64.02 | c | 80.39 | h | 80.19 | b | 76.55 | c | 68.54 | d | 54.87 | a | 38.48 | b | 25.19 | e | 53.00 | a | ||
1991 | 22.37 | a | 35.61 | 41.48 | a | 50.17 | 62.83 | a | 70.97 | 79.20 | c | 69.62 | g | 70.02 | b | 58.07 | c | 41.25 | d | 21.43 | d | 50.31 | a | |||
1992 | 22.02 | b | 34.46 | a | 43.42 | m | 61.00 | c | 64.38 | c | 73.46 | b | 76.04 | d | 75.41 | d | 70.10 | e | 60.58 | e | 37.83 | c | 23.02 | e | 54.39 | a |
1993 | 34.44 | d | 37.62 | c | 48.09 | b | 55.38 | e | 64.23 | c | 72.80 | b | 81.00 | c | 73.65 | e | 69.26 | e | 53.33 | g | 40.18 | b | 33.36 | f | 57.67 | b |
1994 | 36.28 | d | 34.34 | f | 49.69 | b | 55.46 | b | 65.10 | a | 80.33 | a | 82.88 | a | 79.53 | b | 71.69 | c | 55.03 | a | 38.75 | b | 33.70 | a | 58.95 | a |
1995 | 34.73 | a | 45.98 | a | 47.39 | c | 52.02 | c | 60.78 | d | 70.59 | b | 79.03 | b | 78.62 | c | 75.32 | s | 58.78 | d | 48.26 | a | 37.59 | b | 55.80 | a |
1996 | 35.78 | b | 43.74 | 47.81 | 54.40 | e | 70.38 | b | 78.18 | b | 83.25 | a | 78.95 | 67.28 | c | 55.92 | a | 42.50 | a | 34.77 | 57.75 | |||||
1997 | 31.97 | 36.12 | b | 53.21 | b | 50.65 | 66.00 | a | 74.36 | b | 77.78 | a | 75.41 | b | 69.70 | c | 55.18 | a | 43.80 | c | 32.09 | b | 55.52 | |||
1998 | 37.38 | c | 36.54 | d | 44.35 | a | 51.43 | a | 64.40 | 72.31 | a | 81.00 | u | 75.97 | p | 69.86 | a | 54.72 | a | 41.79 | a | 34.13 | d | 50.69 | b | |
1999 | 37.63 | d | 41.09 | a | 50.34 | c | 51.50 | f | 61.97 | a | 74.33 | c | 77.78 | d | 74.31 | b | 68.87 | c | 59.96 | e | 47.33 | 33.61 | 57.02 | a | ||
2000 | 37.34 | b | 41.06 | c | 46.28 | d | 58.60 | d | 72.07 | d | 79.13 | d | 81.41 | c | 77.27 | g | 70.27 | b | 57.07 | a | 34.96 | d | 36.38 | a | 55.87 | a |
2001 | 31.68 | c | 37.25 | d | 47.12 | a | 55.88 | b | 68.22 | b | 76.90 | a | 77.94 | d | 79.28 | m | 72.10 | 59.44 | 47.04 | b | 32.17 | d | 55.07 | a | ||
2002 | 32.46 | c | 36.75 | b | 45.08 | 59.59 | b | 66.84 | 81.04 | b | 82.79 | 80.17 | b | 67.91 | c | 55.15 | a | 42.42 | 33.08 | a | 56.94 | |||||
2003 | 40.43 | a | 37.13 | b | 45.64 | c | 51.17 | c | 64.43 | b | 75.82 | b | 83.60 | a | 78.22 | a | 72.95 | b | 62.17 | e | 41.13 | c | 34.43 | d | 57.26 | |
2004 | 31.57 | a | 34.24 | b | 53.17 | b | 53.47 | 67.61 | 76.89 | b | 79.87 | 77.23 | a | 67.22 | c | 56.46 | d | 41.02 | a | 32.25 | a | 55.92 | ||||
2005 | 38.47 | b | 40.14 | c | ----- | z | 52.82 | s | 66.90 | e | 72.79 | b | 84.08 | a | 75.56 | 69.64 | b | 58.02 | 46.67 | 34.68 | 58.69 | b | ||||
2006 | 35.74 | 39.98 | a | 44.97 | a | 57.29 | m | 61.50 | y | 77.15 | 78.92 | e | 74.44 | m | 64.31 | d | 51.56 | g | 42.26 | g | 31.45 | 53.22 | e | |||
2007 | 28.27 | 38.15 | b | 45.19 | e | 56.63 | d | 63.69 | b | 77.39 | c | 81.86 | f | 80.63 | a | 69.89 | g | 57.24 | b | ----- | z | ----- | z | 55.90 | d | |
2008 | 29.04 | d | 36.15 | e | 47.24 | b | 55.66 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.02 | h |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | 49.26 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.00 | b | ----- | z | ----- | z | ----- | z | 61.13 | j | |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.47 | l | 57.72 | d | 46.07 | ----- | z | 51.89 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.52 | 37.95 | 47.12 | 55.06 | 65.20 | 75.31 | 79.80 | 76.94 | 69.42 | 57.08 | 42.30 | 32.69 | 56.11 | |||||||||||||
S.D. | 4.91 | 3.19 | 3.21 | 3.85 | 2.99 | 3.02 | 2.29 | 2.03 | 2.15 | 2.86 | 3.22 | 4.30 | 1.26 | |||||||||||||
SKEW | -0.40 | 0.70 | 0.34 | -0.32 | 0.38 | 0.08 | 0.26 | 0.35 | -0.40 | -0.07 | 0.07 | -1.00 | -0.15 | |||||||||||||
MAX | 40.43 | 45.98 | 53.21 | 61.00 | 72.07 | 81.04 | 84.08 | 80.63 | 73.00 | 62.53 | 48.26 | 41.55 | 57.75 | |||||||||||||
MIN | 22.02 | 32.07 | 41.48 | 46.59 | 60.19 | 70.59 | 76.04 | 73.65 | 64.31 | 50.52 | 34.96 | 21.43 | 54.19 | |||||||||||||
YRS | 28 | 27 | 26 | 24 | 24 | 24 | 25 | 21 | 23 | 25 | 26 | 25 | 7 |