YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.58 | 33.58 | k | |
1972 | 29.68 | 36.21 | 48.03 | 50.37 | 58.55 | 66.63 | 75.48 | 71.74 | 65.50 | 55.23 | 42.57 | 32.60 | a | 52.72 | ||||||||||||
1973 | 34.45 | 41.43 | 43.55 | 50.87 | 63.16 | 72.27 | 77.35 | 75.77 | 72.20 | 61.13 | 47.13 | 37.42 | 56.39 | |||||||||||||
1974 | 36.81 | 38.82 | 48.90 | 50.63 | 62.16 | 72.17 | 76.74 | 74.84 | 74.00 | 60.90 | 45.00 | 37.39 | 56.53 | |||||||||||||
1975 | ----- | z | 40.04 | 42.84 | 46.93 | 59.16 | 68.70 | 75.39 | 70.23 | 67.90 | 54.48 | 41.17 | 35.29 | 54.74 | a | |||||||||||
1976 | 31.68 | 45.10 | 46.71 | 50.80 | 61.74 | 66.80 | 79.00 | 78.90 | 74.62 | d | 66.10 | 55.17 | 30.81 | 57.29 | ||||||||||||
1977 | 39.26 | 43.32 | 44.71 | 54.70 | 56.47 | a | 70.77 | ----- | z | 74.77 | 67.20 | ----- | z | 46.00 | 39.63 | a | 53.68 | b | ||||||||
1978 | 39.42 | 40.04 | 46.68 | 49.03 | 54.26 | 66.13 | 66.87 | 64.10 | 56.17 | 62.30 | a | 52.77 | 40.05 | j | 54.34 | a | ||||||||||
1979 | ----- | z | 41.39 | 47.39 | 51.44 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.13 | 43.09 | h | |||
1980 | 40.42 | 42.21 | 44.23 | 50.77 | 56.89 | c | 64.40 | 69.71 | 73.68 | 64.03 | 52.29 | 39.53 | 32.48 | b | 52.55 | |||||||||||
1981 | 35.85 | e | 35.78 | e | 45.55 | b | 56.60 | 61.60 | f | 73.24 | a | 76.04 | h | 74.90 | a | 66.77 | d | 50.77 | e | 42.14 | b | 34.21 | b | 51.58 | b | |
1982 | 30.69 | b | 39.63 | i | 43.53 | a | 50.57 | b | 58.43 | a | 65.10 | 71.00 | 71.93 | b | 60.69 | d | 45.24 | b | 34.50 | 30.73 | a | 51.13 | a | |||
1983 | 31.27 | a | 39.07 | 43.71 | c | 45.52 | a | 56.33 | g | 64.42 | k | ----- | z | 72.93 | d | 71.93 | 57.19 | 44.29 | b | 38.00 | a | 49.32 | c | |||
1984 | 35.06 | 36.07 | a | 45.52 | 50.00 | h | 63.80 | a | 69.40 | 77.71 | 76.68 | 70.43 | 49.83 | a | 41.32 | b | 37.13 | a | 54.81 | a | ||||||
1985 | 34.74 | 36.74 | a | 40.23 | i | 52.86 | h | 58.96 | d | 69.90 | 78.03 | a | 70.43 | a | 60.33 | 52.06 | 41.38 | a | 32.28 | b | 53.49 | b | ||||
1986 | 35.87 | 42.04 | 48.67 | a | 50.11 | b | 60.62 | b | 70.73 | 71.55 | 77.89 | c | 60.97 | a | 50.63 | d | 43.23 | 33.74 | 53.84 | |||||||
1987 | 30.65 | e | 38.24 | c | 41.50 | a | 54.46 | d | 59.77 | e | 69.40 | 70.04 | c | 73.65 | 65.07 | 56.29 | 41.86 | b | 32.38 | b | 52.77 | |||||
1988 | 32.57 | c | 35.28 | d | 42.43 | a | 50.61 | b | 58.80 | a | 68.20 | 77.94 | 72.39 | 63.41 | a | 56.23 | a | 42.21 | a | 32.42 | 52.71 | |||||
1989 | 31.10 | 37.41 | a | 48.68 | 56.62 | a | 59.80 | a | 69.34 | a | 76.23 | 70.23 | a | 62.00 | a | 49.52 | 37.81 | c | 26.32 | c | 52.09 | |||||
1990 | 30.59 | b | 33.54 | 44.79 | c | 53.74 | c | 59.40 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.41 | g | |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.13 | 52.65 | 46.10 | 36.83 | a | 50.93 | h | |||
1997 | 39.14 | b | 39.79 | 46.00 | 55.83 | 68.65 | 70.63 | 75.00 | 78.19 | 70.70 | 52.94 | 42.63 | 34.28 | b | 56.15 | |||||||||||
1998 | 36.13 | a | 42.43 | 45.42 | 49.70 | 57.40 | a | 67.30 | 78.29 | 78.84 | 68.57 | 51.39 | 40.72 | a | 32.30 | a | 54.04 | |||||||||
1999 | 34.45 | b | 39.25 | 43.65 | 46.96 | b | 61.66 | b | 70.79 | b | 77.35 | 75.27 | a | 68.93 | 53.26 | 41.07 | 32.54 | c | 53.76 | |||||||
2000 | 38.48 | b | 43.48 | b | 47.81 | 55.73 | 66.48 | 74.50 | 76.70 | a | 77.97 | b | 64.60 | 56.68 | 37.34 | a | 33.36 | c | 56.09 | |||||||
2001 | 34.55 | 39.96 | a | 51.39 | 52.34 | a | 69.29 | 73.93 | b | 77.60 | a | 79.29 | 70.47 | 56.55 | 46.77 | 32.72 | b | 57.07 | ||||||||
2002 | 31.87 | a | 37.19 | a | 41.79 | c | 55.57 | b | 63.03 | 73.34 | a | 81.17 | a | 75.03 | b | 68.21 | a | 53.58 | 42.83 | a | 35.10 | b | 54.89 | |||
2003 | 38.45 | 42.41 | a | 49.16 | 51.23 | d | 64.43 | a | 73.77 | 82.74 | 79.59 | b | 71.80 | 58.70 | a | 42.48 | a | 33.39 | c | 57.35 | ||||||
2004 | 34.77 | 40.29 | a | 50.24 | b | 55.68 | e | 63.30 | a | 73.27 | 78.81 | 76.80 | a | 66.43 | 55.47 | a | 43.67 | f | 36.46 | c | 57.41 | a | ||||
2005 | 41.43 | a | 44.76 | c | 48.83 | a | 50.34 | a | 64.31 | b | 69.44 | c | 81.07 | c | 78.62 | e | 63.96 | e | 59.00 | x | 45.05 | h | 33.08 | r | 60.31 | c |
2006 | 35.44 | f | 35.90 | h | 39.82 | t | 49.14 | p | 63.40 | u | 74.11 | b | 82.33 | a | 73.80 | f | 66.28 | e | 53.03 | a | 43.31 | n | 30.80 | p | 68.94 | h |
2007 | 26.53 | p | 37.50 | r | 50.00 | y | 55.78 | u | 65.16 | 72.33 | 80.30 | a | 78.71 | 67.53 | 54.58 | 44.27 | 32.90 | a | 61.97 | d | ||||||
2008 | 33.34 | b | 38.63 | b | 45.10 | 51.27 | 61.63 | a | 72.07 | 80.45 | 79.23 | 68.90 | 53.16 | 44.30 | c | 35.20 | a | 55.27 | ||||||||
2009 | 33.90 | 37.50 | 41.81 | 50.52 | a | 67.90 | 68.31 | a | 81.23 | a | 74.61 | h | 69.50 | 50.81 | 40.57 | 31.48 | 52.14 | a | ||||||||
2010 | 33.48 | 40.93 | 44.71 | 48.60 | 57.10 | 71.40 | 79.87 | 74.35 | 65.93 | 57.71 | 41.33 | 38.60 | a | 54.50 | ||||||||||||
2011 | 32.58 | 34.89 | 43.97 | 52.57 | 56.97 | 68.10 | 76.71 | 76.03 | 69.37 | 54.74 | 39.60 | 30.81 | 53.03 | |||||||||||||
2012 | 31.42 | 38.37 | b | 44.90 | 53.66 | a | 64.90 | 70.69 | a | 77.45 | 81.74 | 72.54 | b | 56.03 | 42.73 | d | 37.81 | 56.02 | ||||||||
2013 | 29.71 | 36.50 | 47.97 | b | 57.00 | b | 63.53 | a | 74.33 | 82.45 | 75.74 | ----- | z | ----- | z | ----- | z | ----- | z | 58.40 | d | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.49 | 39.37 | 45.76 | 51.90 | 61.49 | 70.35 | 77.18 | 75.33 | 67.21 | 54.73 | 42.93 | 34.01 | 54.75 | |||||||||||||
S.D. | 3.32 | 2.94 | 2.60 | 3.02 | 3.77 | 2.80 | 3.94 | 3.65 | 4.20 | 4.18 | 4.03 | 2.83 | 1.77 | |||||||||||||
SKEW | 0.42 | 0.08 | 0.25 | 0.02 | 0.26 | -0.31 | -0.87 | -0.84 | -0.48 | 0.50 | 1.02 | -0.09 | 0.02 | |||||||||||||
MAX | 41.43 | 45.10 | 51.39 | 57.00 | 69.29 | 74.50 | 82.74 | 81.74 | 74.62 | 66.10 | 55.17 | 39.63 | 57.35 | |||||||||||||
MIN | 29.68 | 33.54 | 41.50 | 45.52 | 54.26 | 64.40 | 66.87 | 64.10 | 56.17 | 45.24 | 34.50 | 26.32 | 52.09 | |||||||||||||
YRS | 32 | 33 | 33 | 32 | 32 | 33 | 31 | 32 | 34 | 32 | 31 | 33 | 20 |