YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | 52.56 | 60.10 | 66.42 | 64.76 | 58.13 | 46.66 | 39.43 | 32.32 | 52.55 | d | ||||||||
1977 | 28.48 | 35.07 | 34.84 | 45.70 | 48.65 | 63.30 | 67.16 | 66.47 | 60.15 | 51.18 | a | 39.63 | 35.13 | 47.98 | ||||||||||||
1978 | 31.42 | 32.05 | 40.97 | 43.67 | a | 50.95 | a | 62.27 | 67.56 | 65.32 | 58.22 | 52.19 | 37.25 | 27.48 | 47.45 | |||||||||||
1979 | 23.69 | 29.20 | a | 35.00 | 43.63 | 52.05 | 61.40 | 67.47 | a | 63.24 | ----- | z | 51.92 | 34.42 | 34.10 | 45.10 | a | |||||||||
1980 | 33.35 | 36.31 | 34.94 | 44.38 | 47.90 | 60.03 | a | 67.35 | 65.31 | 59.98 | 47.94 | 38.89 | c | 38.47 | 47.90 | |||||||||||
1981 | 35.34 | 34.88 | 37.42 | 47.12 | 52.45 | 64.57 | a | 67.23 | 65.44 | 59.02 | 46.10 | 41.00 | a | 35.73 | 48.86 | |||||||||||
1982 | 29.00 | a | 32.36 | 36.62 | a | 44.02 | ----- | z | 58.77 | 65.03 | 64.76 | 59.02 | 45.24 | 36.42 | 31.08 | a | 45.66 | a | ||||||||
1983 | 32.82 | 33.89 | 37.65 | 39.36 | a | 50.82 | a | 59.90 | 65.67 | a | 64.19 | 61.45 | 48.60 | 37.47 | 34.47 | a | 47.19 | |||||||||
1984 | 31.39 | ----- | z | 37.27 | a | 42.59 | a | 57.97 | 60.72 | a | 65.53 | a | 63.55 | 59.75 | 41.50 | 35.95 | b | 29.09 | d | 47.75 | a | |||||
1985 | 26.89 | c | 26.55 | 34.09 | b | 45.75 | 52.84 | 62.87 | 67.89 | 65.65 | 54.25 | 47.55 | b | 33.22 | a | 32.34 | 45.82 | |||||||||
1986 | 36.56 | 34.48 | 40.10 | 43.38 | 52.27 | 62.30 | 64.79 | 66.37 | 54.22 | 44.45 | 37.43 | 30.42 | 47.23 | |||||||||||||
1987 | 27.50 | 31.57 | 32.03 | 45.95 | 50.90 | 61.65 | 63.45 | 63.03 | 57.20 | 51.38 | a | 36.12 | 25.98 | 45.56 | ||||||||||||
1988 | 26.63 | 33.76 | 35.27 | 42.71 | a | 50.48 | 62.38 | 67.85 | 64.10 | 56.18 | 52.55 | 35.60 | a | 28.27 | 46.32 | |||||||||||
1989 | 25.06 | 30.11 | a | 40.68 | ----- | z | 53.74 | 61.53 | 68.52 | 63.74 | 58.92 | 38.30 | c | ----- | z | 31.00 | d | 47.16 | b | |||||||
1990 | 28.15 | a | 28.75 | d | 39.57 | d | 46.59 | c | 51.48 | a | 64.62 | 66.90 | 64.03 | a | 60.70 | 49.40 | 38.18 | 24.12 | a | 46.88 | ||||||
1991 | 28.94 | 37.88 | 33.95 | 41.69 | a | 49.92 | 58.73 | 67.47 | 66.35 | 58.85 | 50.95 | a | 36.97 | a | 31.96 | c | 46.97 | |||||||||
1992 | 28.20 | f | 35.57 | b | 38.12 | b | 48.02 | c | 53.94 | 59.12 | 65.10 | 64.52 | 58.15 | 50.63 | a | 33.21 | b | 25.29 | e | 48.33 | a | |||||
1993 | 30.72 | d | 31.88 | d | 38.93 | c | 44.83 | 53.81 | 59.63 | 65.27 | 63.77 | a | 56.30 | 45.52 | b | 33.80 | c | 28.93 | c | 46.12 | ||||||
1994 | 31.61 | d | 27.48 | c | 40.15 | a | 43.78 | c | 53.05 | i | 65.53 | 68.48 | 68.19 | 60.95 | 45.32 | a | 33.16 | b | 32.50 | d | 47.01 | a | ||||
1995 | 29.34 | 38.25 | d | 39.67 | b | 41.63 | 47.47 | 57.53 | 65.97 | a | 68.18 | 60.82 | 49.53 | a | 43.70 | c | 33.50 | 47.97 | ||||||||
1996 | 31.16 | 36.68 | a | 39.72 | a | 45.68 | b | 56.45 | 64.62 | 69.23 | 66.92 | 57.84 | a | 47.15 | 38.86 | e | ----- | z | 50.39 | a | ||||||
1997 | 30.45 | b | 33.59 | a | ----- | z | ----- | z | ----- | z | 61.00 | a | 66.72 | b | 66.98 | a | 61.47 | a | ----- | z | ----- | z | ----- | z | 53.37 | f |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.93 | h | 37.98 | f | 29.80 | d | 29.80 | k |
1999 | 32.67 | e | 36.52 | g | 41.78 | h | 40.55 | i | 51.38 | c | 62.28 | c | 66.22 | d | 64.61 | d | 58.17 | c | 51.41 | d | 44.60 | d | 31.63 | e | 51.44 | c |
2000 | 35.13 | e | 37.54 | e | 38.21 | e | 49.92 | d | 59.12 | e | 64.57 | c | 68.20 | c | 66.22 | d | 61.64 | b | 47.58 | e | 32.96 | d | 36.25 | g | 51.01 | a |
2001 | 29.89 | d | 32.75 | d | 39.46 | e | 46.83 | f | 59.25 | c | 64.73 | d | 66.42 | g | 66.28 | b | 63.62 | b | 53.50 | f | 40.45 | h | 30.60 | e | 48.32 | d |
2002 | 32.42 | f | 35.78 | c | 37.96 | g | 49.18 | e | 55.33 | e | 65.41 | c | 72.04 | e | 68.66 | c | 60.06 | d | 48.46 | c | 40.94 | e | 29.40 | b | 52.53 | b |
2003 | 39.00 | b | 34.62 | c | 38.09 | d | 43.98 | g | 57.28 | f | 63.93 | c | 72.02 | c | 68.15 | d | 63.74 | c | 55.83 | b | 37.92 | f | 32.98 | f | 54.42 | d |
2004 | 32.24 | d | 29.35 | c | 46.12 | a | 45.54 | e | 55.45 | c | 64.34 | b | 67.00 | b | 65.32 | a | 59.00 | c | 47.50 | e | 37.21 | d | 33.71 | e | 48.56 | |
2005 | 35.18 | c | 36.45 | 39.35 | e | 45.74 | e | 55.60 | a | 61.20 | c | 71.37 | a | 65.97 | a | 60.65 | c | 51.56 | e | 43.52 | c | 34.77 | a | 50.11 | ||
2006 | 33.68 | c | 34.96 | b | 34.59 | h | 48.56 | c | 58.96 | d | 66.64 | a | 70.85 | 65.55 | b | 57.97 | a | 48.76 | b | 42.38 | b | 32.09 | b | 50.94 | a | |
2007 | 30.48 | b | 34.33 | d | 42.93 | d | 48.52 | d | 56.30 | c | 65.42 | d | 72.16 | b | 68.21 | b | 61.88 | a | 51.16 | b | 44.95 | b | 31.21 | c | 50.63 | |
2008 | 26.98 | d | 31.44 | c | 41.22 | b | 45.96 | b | 49.53 | b | 64.39 | c | 69.00 | b | 68.45 | c | 60.57 | a | 50.73 | c | 42.06 | f | 30.20 | i | 50.83 | b |
2009 | 33.60 | a | 34.07 | f | 39.79 | c | 43.58 | e | 57.46 | f | 56.60 | o | 69.20 | c | 66.16 | i | 61.89 | g | 43.25 | u | 40.88 | n | 23.16 | f | 46.54 | h |
2010 | 30.50 | f | 29.55 | g | 37.28 | h | 41.93 | h | 48.81 | e | 62.73 | f | 69.90 | f | 66.19 | o | 63.03 | m | 50.95 | l | 33.42 | l | 34.76 | f | 48.81 | k |
2011 | 29.73 | c | 28.77 | f | 39.29 | 44.43 | p | ----- | z | ----- | z | ----- | z | ----- | z | 60.21 | f | 50.50 | c | 38.30 | 29.94 | 37.55 | g | |||
2012 | 36.39 | 33.15 | b | 40.61 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.72 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.05 | 33.36 | 38.40 | 45.09 | 52.98 | 62.36 | 67.66 | 65.70 | 59.32 | 48.63 | 38.06 | 31.22 | 47.60 | |||||||||||||
S.D. | 3.53 | 3.06 | 2.95 | 2.50 | 3.39 | 2.38 | 2.22 | 1.65 | 2.28 | 3.51 | 3.56 | 3.22 | 1.43 | |||||||||||||
SKEW | 0.11 | -0.47 | 0.06 | -0.04 | 0.35 | -0.15 | 0.53 | 0.28 | -0.32 | -0.80 | 0.38 | -0.17 | 0.63 | |||||||||||||
MAX | 39.00 | 38.25 | 46.12 | 49.92 | 59.25 | 66.64 | 72.16 | 68.66 | 63.74 | 55.83 | 44.95 | 38.47 | 50.63 | |||||||||||||
MIN | 23.69 | 26.55 | 32.03 | 39.36 | 47.47 | 57.53 | 63.45 | 63.03 | 54.22 | 38.30 | 32.96 | 24.12 | 45.56 | |||||||||||||
YRS | 32 | 30 | 30 | 27 | 29 | 32 | 32 | 32 | 31 | 31 | 28 | 29 | 16 |