YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.65 | 67.90 | a | 57.63 | a | 43.41 | a | 21.07 | d | 53.33 | g | |
1979 | 18.63 | a | 25.41 | 41.42 | 53.63 | 61.85 | a | 72.73 | 79.37 | 76.03 | 71.87 | 58.13 | 33.90 | a | 28.42 | 51.78 | ||||||||||
1980 | 34.37 | 40.10 | 41.06 | 51.48 | 58.94 | 73.64 | a | 79.32 | a | 76.73 | 68.12 | 53.63 | 42.30 | 39.85 | 54.96 | |||||||||||
1981 | 37.42 | a | 39.36 | 44.97 | 59.00 | a | 61.50 | 76.63 | 78.87 | 75.40 | 68.73 | 52.08 | 43.57 | 33.87 | 55.95 | |||||||||||
1982 | 30.29 | 34.84 | 45.68 | 52.29 | a | 61.68 | 68.67 | g | 78.57 | b | 76.98 | 67.82 | ----- | z | 39.59 | b | 31.77 | a | 51.95 | b | ||||||
1983 | 32.23 | a | 39.26 | e | 44.94 | v | 48.38 | i | 55.09 | t | 68.62 | f | 76.45 | c | 75.92 | 68.65 | c | 55.37 | d | 42.26 | c | 30.98 | b | 52.64 | d | |
1984 | 22.39 | 31.02 | c | 43.04 | d | 48.02 | g | 65.36 | i | 66.36 | p | 78.27 | c | 76.26 | 69.74 | a | 49.45 | b | 41.25 | d | 32.80 | c | 49.36 | c | ||
1985 | 27.76 | d | 30.35 | b | 41.41 | b | 56.28 | 66.41 | c | 75.60 | a | 78.92 | a | 76.27 | 62.67 | a | 53.75 | c | 41.15 | 32.55 | 53.59 | |||||
1986 | 34.84 | 42.14 | 50.34 | 52.75 | 60.77 | a | 74.79 | a | 78.82 | a | ----- | z | 59.21 | a | 50.46 | c | 41.56 | c | 31.87 | a | 52.50 | a | ||||
1987 | 20.63 | a | 36.29 | 43.33 | a | 55.33 | a | 62.88 | a | 74.54 | e | 76.85 | d | 74.14 | b | 66.88 | a | 57.31 | b | 39.98 | 29.74 | 53.16 | ||||
1988 | 21.02 | a | 31.57 | 42.61 | 54.50 | a | 62.13 | 76.28 | 80.19 | 76.94 | 65.83 | 60.50 | 42.65 | 31.22 | a | 53.79 | ||||||||||
1989 | 20.42 | 32.34 | 50.40 | 59.68 | b | 65.27 | c | 72.05 | b | 80.84 | b | 75.56 | 68.90 | 56.65 | a | 44.00 | a | 31.53 | 54.80 | |||||||
1990 | 30.63 | 38.72 | a | 48.21 | b | 58.17 | d | 63.05 | a | 77.22 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.67 | f | |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.90 | d | 27.50 | b | 33.20 | j |
1992 | 21.35 | 36.80 | a | 48.18 | a | 60.00 | 64.15 | 71.26 | a | 75.90 | b | 76.76 | b | 69.33 | c | 59.14 | b | 37.41 | b | 25.00 | 53.77 | |||||
1993 | 32.17 | b | 36.93 | a | 47.29 | c | 51.45 | a | 62.22 | b | 71.48 | b | 77.83 | a | 74.25 | a | 67.08 | 52.68 | a | 36.71 | b | 30.47 | 53.38 | |||
1994 | 32.58 | a | 34.50 | d | 48.89 | 54.83 | a | 65.45 | a | 78.32 | b | 81.08 | 79.47 | a | 69.38 | a | 53.82 | 39.79 | a | 32.94 | 55.92 | |||||
1995 | 33.60 | 43.91 | 47.05 | 51.52 | 57.97 | a | 68.50 | 76.37 | 78.10 | 68.98 | a | 55.37 | 44.88 | b | 36.37 | 55.22 | ||||||||||
1996 | 32.95 | 41.14 | a | 45.20 | a | 53.03 | a | 67.35 | 75.14 | b | 80.42 | 78.35 | 64.85 | 52.90 | 42.03 | 33.27 | a | 55.55 | ||||||||
1997 | 32.48 | b | 34.52 | a | 46.45 | 47.80 | b | 63.32 | a | 72.60 | 75.97 | 74.44 | 66.21 | b | 52.14 | b | 39.84 | a | 29.56 | 52.94 | ||||||
1998 | 35.81 | b | 37.48 | 44.00 | 50.05 | 63.32 | a | 69.08 | 80.98 | 78.18 | 71.10 | a | 53.89 | d | 42.85 | 28.77 | c | 54.63 | ||||||||
1999 | 35.37 | a | 39.73 | b | 50.25 | a | 48.62 | 58.95 | b | 71.28 | a | 77.57 | b | 74.27 | 64.48 | 55.69 | b | 44.60 | 31.31 | m | 56.44 | a | ||||
2000 | 34.95 | a | 41.67 | b | 44.25 | c | 57.55 | 66.90 | 73.68 | 80.79 | 79.87 | 67.25 | l | 55.35 | g | 34.02 | j | 32.45 | a | 56.90 | c | |||||
2001 | 29.81 | e | 37.00 | 46.82 | 55.14 | a | 64.82 | c | 75.31 | a | 79.48 | a | 76.14 | b | 70.14 | h | 57.66 | c | 46.00 | b | 29.66 | c | 54.35 | a | ||
2002 | 29.57 | d | 32.60 | b | 41.54 | e | 57.67 | f | 62.71 | g | 77.30 | 82.21 | b | 77.21 | b | 67.00 | b | 52.90 | b | 40.11 | b | 32.77 | a | 53.32 | b | |
2003 | 35.85 | e | 36.86 | c | 45.63 | a | 53.16 | a | 64.47 | a | 74.06 | d | 83.42 | 77.35 | e | 64.65 | j | 59.61 | c | 38.95 | b | 32.63 | a | 54.72 | a | |
2004 | 24.71 | 33.68 | a | 51.90 | 54.78 | c | 65.37 | d | 73.32 | 80.11 | c | 76.02 | b | 66.29 | f | 55.52 | f | 40.53 | 31.11 | 53.15 | b | |||||
2005 | 39.32 | a | 39.65 | a | 43.69 | b | 53.87 | g | 64.27 | 68.89 | b | 82.03 | 74.59 | n | 69.64 | h | 57.45 | a | 44.50 | 28.85 | k | 54.98 | d | |||
2006 | 34.37 | e | 35.42 | d | 44.55 | j | 58.73 | f | 66.86 | m | 77.52 | 79.50 | h | 77.47 | o | 67.69 | q | 52.33 | b | 46.37 | k | 30.35 | k | 49.91 | h | |
2007 | 27.55 | a | 41.55 | 47.65 | h | 55.86 | h | ----- | z | 76.33 | j | 82.75 | c | 77.65 | e | 68.54 | g | 55.23 | c | 43.46 | c | 39.08 | y | 54.70 | f | |
2008 | 26.50 | 35.39 | a | 44.66 | 51.07 | 61.02 | 73.98 | 83.34 | 80.42 | 69.98 | a | 59.04 | d | 46.02 | c | 33.74 | h | 57.40 | a | |||||||
2009 | 27.91 | n | 40.79 | i | 49.21 | c | 50.48 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.21 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.99 | 36.56 | 45.83 | 54.00 | 63.09 | 73.81 | 79.51 | 76.74 | 67.49 | 55.19 | 41.51 | 31.13 | 54.25 | |||||||||||||
S.D. | 5.80 | 4.16 | 3.11 | 3.37 | 2.51 | 2.74 | 2.20 | 1.66 | 2.86 | 2.95 | 2.85 | 3.56 | 1.24 | |||||||||||||
SKEW | -0.53 | -0.52 | 0.19 | 0.14 | -0.26 | -0.32 | 0.05 | 0.40 | -1.15 | 0.01 | -0.58 | -0.45 | -0.26 | |||||||||||||
MAX | 39.32 | 43.91 | 51.90 | 60.00 | 67.35 | 78.32 | 83.42 | 80.42 | 71.87 | 60.50 | 46.02 | 39.85 | 55.95 | |||||||||||||
MIN | 18.63 | 25.41 | 41.06 | 47.80 | 57.97 | 68.50 | 75.90 | 74.14 | 59.21 | 49.45 | 33.90 | 21.07 | 51.78 | |||||||||||||
YRS | 29 | 29 | 27 | 23 | 24 | 25 | 27 | 26 | 22 | 26 | 28 | 25 | 14 |