YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.42 | r | ----- | z | 75.09 | t | 59.93 | 43.35 | 35.80 | 28.13 | 41.80 | h | ||||
1983 | 27.81 | 32.79 | 37.42 | 38.73 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.19 | h | ||||
1984 | ----- | z | ----- | z | ----- | z | 43.36 | b | 58.06 | 60.50 | 65.58 | 64.13 | 57.03 | a | 46.40 | a | 33.60 | 29.83 | b | 50.94 | c | |||||
1985 | 26.07 | a | 29.48 | g | 36.92 | e | 44.56 | e | 52.84 | 59.96 | c | 65.37 | a | 63.83 | h | 55.63 | 46.94 | 38.36 | b | 27.29 | 45.39 | b | ||||
1986 | 28.94 | 35.29 | 38.29 | 45.12 | f | 49.90 | 61.53 | 63.16 | 64.97 | b | ----- | z | 42.42 | g | 33.43 | b | 26.79 | c | 44.70 | c | ||||||
1987 | 25.22 | d | 30.32 | 32.52 | b | 42.03 | 48.97 | 58.40 | 62.13 | a | 61.81 | 53.43 | 46.81 | 31.30 | 21.20 | a | 42.85 | |||||||||
1988 | 23.45 | 30.28 | 33.87 | 40.80 | 49.90 | 61.80 | 65.42 | 64.39 | 53.83 | 47.90 | 33.20 | 26.65 | 44.29 | |||||||||||||
1989 | 25.84 | 33.04 | 39.90 | 48.23 | 57.16 | 63.17 | 67.94 | 64.23 | 56.87 | 45.37 | a | 35.30 | 23.97 | 46.75 | ||||||||||||
1990 | 25.60 | a | 29.36 | 39.65 | 49.07 | 53.61 | 66.57 | 65.97 | a | 62.03 | 60.97 | 44.74 | 35.97 | 25.85 | d | 46.61 | ||||||||||
1991 | 28.32 | 33.96 | 34.90 | 42.43 | b | 51.19 | 59.40 | 65.26 | 64.29 | 57.00 | 45.58 | 33.27 | 29.68 | 45.44 | ||||||||||||
1992 | 25.62 | b | 32.37 | b | 36.74 | 46.73 | 53.68 | 59.33 | 65.03 | a | 64.58 | 57.93 | 47.32 | 31.00 | 27.00 | c | 45.61 | |||||||||
1993 | 31.50 | i | 32.52 | e | 37.65 | 44.32 | b | 53.39 | 61.34 | a | 66.97 | a | 64.50 | a | 55.53 | 44.41 | b | 31.76 | a | 26.59 | b | 47.18 | a | |||
1994 | 24.54 | c | 28.76 | c | 39.55 | 44.19 | c | 54.00 | 67.03 | 69.06 | 68.61 | 59.45 | a | 46.16 | 35.90 | a | 31.77 | a | 47.42 | |||||||
1995 | 29.65 | 36.70 | a | 39.87 | a | 41.31 | a | 51.81 | 62.03 | 65.03 | a | 67.90 | 58.23 | 46.00 | c | 37.40 | 30.67 | a | 47.22 | |||||||
1996 | 27.19 | e | 38.52 | b | 36.00 | d | 44.48 | a | 58.06 | 65.83 | 68.86 | b | 64.93 | a | 56.60 | 46.81 | 36.14 | a | 27.67 | d | 47.59 | |||||
1997 | 28.11 | d | 29.58 | d | 38.27 | a | 43.97 | a | 55.81 | 61.23 | 65.52 | b | 65.63 | a | 62.24 | a | 44.93 | a | 34.33 | 25.10 | a | 46.23 | ||||
1998 | 27.27 | a | 28.38 | b | 36.03 | 39.10 | a | 51.65 | 60.43 | b | 66.90 | b | 64.77 | 61.86 | b | 46.84 | f | ----- | z | 29.83 | h | 48.49 | c | |||
1999 | 29.77 | a | 31.52 | a | 36.93 | d | 40.39 | g | 52.97 | b | ----- | z | 66.96 | c | 65.95 | j | 58.89 | c | 44.86 | c | 36.24 | a | 25.12 | g | 44.77 | d |
2000 | 28.60 | f | 33.81 | b | 37.48 | d | 47.10 | 57.38 | b | 64.04 | c | 68.00 | d | 66.24 | b | 59.57 | b | 49.38 | g | 30.50 | d | 27.77 | a | 49.19 | b | |
2001 | 26.50 | a | 30.42 | b | 37.52 | d | 44.59 | c | 55.79 | b | 64.10 | 68.35 | 65.81 | 58.38 | a | 48.07 | b | 34.21 | b | 24.52 | d | 46.52 | ||||
2002 | 26.12 | f | 28.17 | e | 35.14 | c | 50.96 | c | 54.32 | 66.87 | 67.07 | c | 66.26 | d | 60.17 | 48.10 | b | 32.89 | b | 28.61 | c | 48.96 | a | |||
2003 | 31.30 | d | 32.83 | d | 38.50 | a | 45.46 | d | 56.21 | b | 61.54 | b | 70.43 | a | 66.88 | e | 60.12 | f | 50.44 | f | 37.11 | b | 27.15 | k | 48.92 | c |
2004 | 28.38 | e | 27.48 | f | 42.76 | b | 46.15 | d | 56.60 | a | 62.07 | a | 66.48 | b | 62.59 | d | 55.69 | a | 46.35 | h | 35.19 | d | 26.96 | e | 48.29 | b |
2005 | 32.40 | f | 36.70 | e | 37.82 | c | 43.76 | a | 55.03 | a | 61.85 | c | 69.69 | b | 66.10 | k | 61.07 | o | ----- | z | ----- | z | ----- | z | 50.81 | f |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | 58.24 | b | 65.10 | 69.20 | a | 64.92 | f | 55.32 | e | 45.70 | d | ----- | z | ----- | z | 58.71 | g | |
2007 | 26.06 | m | 32.52 | g | 39.29 | 44.86 | b | ----- | z | 58.33 | x | ----- | z | 66.70 | d | 60.07 | 46.73 | e | 38.03 | a | 26.63 | d | 46.04 | e | ||
2008 | 25.04 | g | 29.96 | f | 34.00 | d | 40.89 | c | 52.48 | b | 61.60 | e | 66.16 | 63.81 | d | 55.45 | a | 45.79 | b | 34.70 | g | 28.08 | g | 52.52 | d | |
2009 | 27.04 | d | 31.92 | d | 38.92 | f | 43.92 | f | 58.10 | a | 61.92 | d | 68.90 | 65.42 | 57.59 | a | 46.88 | g | 35.14 | b | 25.92 | f | 50.75 | d | ||
2010 | 25.64 | f | 30.96 | b | 33.24 | f | 45.35 | g | 52.50 | a | 65.43 | b | 66.72 | b | 66.41 | b | 60.93 | c | 48.38 | b | 32.04 | d | 29.63 | d | 50.33 | c |
2011 | 22.33 | g | 22.54 | d | 39.81 | d | 47.79 | f | 51.93 | a | 63.64 | b | 69.93 | a | 68.42 | 60.50 | 46.74 | 34.03 | 25.94 | 48.35 | b | |||||
2012 | 28.61 | 30.86 | 35.58 | 44.17 | 53.50 | i | 65.79 | a | 67.81 | 67.39 | 58.20 | 46.62 | b | 35.86 | b | ----- | z | 48.09 | b | |||||||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | 37.90 | k | 42.96 | d | 48.34 | b | 63.12 | d | 67.96 | f | 65.00 | x | 62.04 | b | 47.90 | a | 33.50 | h | 31.50 | i | 52.87 | g |
2015 | 30.45 | k | 34.25 | h | 33.88 | w | ----- | z | ----- | z | 63.47 | m | 69.71 | n | 67.55 | k | 59.67 | 50.76 | b | 32.50 | 23.40 | a | 41.58 | h | ||
2016 | 23.70 | a | 29.38 | 39.52 | 45.07 | a | 50.39 | 64.38 | a | 69.13 | 62.97 | 58.60 | 49.45 | 38.87 | 31.13 | 46.88 | ||||||||||
2017 | 30.35 | 34.54 | b | 41.29 | 43.79 | a | 50.57 | c | 61.97 | a | 67.83 | b | 65.28 | b | 58.07 | 48.06 | 40.83 | a | 27.77 | 47.53 | ||||||
2018 | 24.13 | a | 34.48 | a | 39.93 | a | 48.07 | a | 52.75 | w | 65.42 | r | 68.11 | m | 65.95 | k | 58.72 | l | 48.95 | k | 30.92 | q | ----- | z | 36.65 | h |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.10 | 31.85 | 37.69 | 44.33 | 53.70 | 62.73 | 67.03 | 65.22 | 58.25 | 46.66 | 34.83 | 27.22 | 46.23 | |||||||||||||
S.D. | 2.17 | 3.27 | 2.34 | 2.85 | 2.95 | 2.36 | 1.98 | 1.79 | 2.36 | 1.62 | 2.52 | 2.48 | 1.39 | |||||||||||||
SKEW | 0.05 | -0.40 | -0.17 | 0.17 | 0.03 | 0.25 | -0.38 | 0.03 | -0.18 | 0.34 | 0.29 | -0.27 | -1.26 | |||||||||||||
MAX | 31.30 | 38.52 | 42.76 | 50.96 | 58.24 | 67.03 | 70.43 | 68.61 | 62.24 | 50.76 | 40.83 | 31.77 | 47.59 | |||||||||||||
MIN | 23.45 | 22.54 | 32.52 | 38.73 | 48.34 | 58.40 | 62.13 | 61.81 | 53.43 | 43.35 | 30.50 | 21.20 | 42.85 | |||||||||||||
YRS | 23 | 27 | 29 | 28 | 30 | 30 | 30 | 27 | 31 | 27 | 29 | 25 | 13 |