YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.91 | s | ----- | z | 84.77 | t | 73.82 | 60.89 | 49.86 | b | 42.02 | d | 56.64 | h | ||
1983 | 42.52 | b | 48.33 | a | 53.92 | a | 54.23 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.26 | i |
1984 | ----- | z | ----- | z | ----- | z | 59.80 | b | 74.74 | 75.95 | 80.03 | a | 76.44 | 71.88 | a | 58.45 | a | 49.33 | 40.34 | b | 65.22 | c | ||||
1985 | 38.73 | a | 44.40 | g | 51.21 | e | 61.16 | e | 68.68 | 77.41 | c | 81.07 | a | 78.09 | h | 70.65 | 60.37 | 52.23 | b | 42.94 | 60.44 | b | ||||
1986 | 45.76 | 50.79 | 55.03 | 62.63 | g | 68.05 | 76.70 | 76.98 | 78.79 | b | ----- | z | 58.04 | g | 46.73 | b | 38.45 | c | 59.70 | c | ||||||
1987 | 39.98 | e | 44.88 | 49.32 | c | 59.13 | 65.23 | 75.77 | 78.30 | a | 76.00 | 69.25 | 63.34 | 46.72 | 36.48 | a | 58.70 | |||||||||
1988 | 37.82 | 46.27 | a | 50.95 | 58.70 | 67.61 | 77.85 | 79.50 | 76.84 | 69.73 | 64.55 | 50.77 | 39.90 | 60.04 | ||||||||||||
1989 | 40.63 | 48.57 | 57.76 | 66.87 | 74.16 | 80.33 | 82.10 | 77.47 | 72.87 | 61.88 | a | 51.88 | 39.58 | 62.84 | ||||||||||||
1990 | 41.12 | a | 45.27 | 54.19 | 64.35 | 69.60 | 83.52 | 79.03 | a | 75.53 | 72.92 | 61.71 | 50.33 | 39.43 | d | 61.42 | ||||||||||
1991 | 41.53 | 48.77 | 50.58 | 60.48 | b | 69.24 | 76.70 | 78.19 | 77.21 | 70.10 | 62.94 | 47.57 | 41.00 | a | 60.36 | |||||||||||
1992 | 38.07 | b | 46.26 | b | 52.95 | 63.72 | 67.16 | 76.10 | 80.63 | a | 79.11 | 74.25 | 64.06 | 45.97 | 38.48 | c | 60.56 | |||||||||
1993 | 44.59 | i | 46.93 | e | 54.03 | 61.79 | b | 70.15 | 79.00 | a | 82.18 | a | 77.80 | a | 71.68 | 60.76 | b | 48.22 | a | 41.47 | b | 63.09 | a | |||
1994 | 41.50 | c | 45.04 | c | 55.35 | 61.33 | c | 70.45 | 84.36 | a | 84.19 | 82.87 | 74.17 | a | 61.35 | 49.22 | a | 44.70 | a | 62.88 | ||||||
1995 | 42.92 | 52.15 | a | 55.33 | a | 58.02 | a | 68.16 | 77.98 | 81.20 | a | 82.08 | 72.65 | 63.79 | c | 54.35 | 45.53 | a | 62.85 | |||||||
1996 | 44.40 | e | 53.30 | b | 52.37 | d | 61.52 | a | 76.13 | 81.72 | 82.38 | b | 78.47 | a | 70.62 | 61.34 | 51.54 | b | 43.19 | d | 63.08 | |||||
1997 | 41.61 | d | 44.38 | d | 55.38 | a | 58.47 | a | 71.89 | 77.70 | 80.62 | b | 79.90 | a | 75.55 | a | 60.37 | a | 49.27 | 36.98 | a | 61.01 | ||||
1998 | 42.87 | a | 43.35 | b | 51.05 | 54.91 | a | 69.19 | 78.23 | b | 80.86 | b | 79.23 | 77.07 | b | 61.94 | f | ----- | z | 43.30 | h | 64.08 | c | |||
1999 | 45.37 | a | 49.19 | a | 53.83 | e | 57.76 | g | 68.90 | b | ----- | z | 79.20 | c | 78.98 | j | 72.72 | c | 62.46 | c | 54.36 | a | 39.15 | g | 60.75 | d |
2000 | 45.90 | f | 50.67 | b | 52.81 | e | 64.08 | 74.91 | b | 79.07 | c | 82.56 | d | 79.84 | b | 76.44 | c | 62.58 | g | 43.96 | d | 42.97 | a | 64.73 | b | |
2001 | 39.05 | a | 45.77 | b | 52.72 | d | 61.81 | d | 72.59 | b | 80.53 | 82.97 | 79.60 | 74.43 | a | 64.71 | b | 47.48 | f | 40.44 | d | 63.15 | a | |||
2002 | 41.44 | f | 44.24 | e | 52.36 | c | 67.19 | c | 71.55 | 83.28 | 81.00 | c | 81.56 | d | 74.07 | 61.93 | b | 48.20 | c | 40.81 | d | 64.20 | a | |||
2003 | 47.43 | d | 47.06 | d | 53.50 | a | 62.04 | d | 72.62 | b | 77.84 | b | 85.58 | a | 81.52 | e | 75.35 | f | 65.92 | f | 51.93 | c | 43.40 | k | 64.39 | c |
2004 | 42.37 | e | 42.37 | f | 57.24 | b | 60.19 | d | 71.82 | a | 78.74 | a | 80.78 | b | 76.15 | d | 70.36 | a | 60.43 | h | 48.13 | d | 40.62 | e | 62.64 | b |
2005 | 45.88 | f | 46.66 | f | 51.14 | c | 59.31 | a | 70.22 | a | 78.72 | c | 84.43 | b | 78.05 | k | 75.07 | o | ----- | z | ----- | z | ----- | z | 68.76 | g |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | 74.10 | b | 80.28 | 81.55 | a | 76.23 | g | 67.88 | e | 59.71 | e | ----- | z | ----- | z | 72.71 | g | |
2007 | 35.76 | n | 47.45 | g | 55.11 | 60.50 | b | ----- | z | 74.58 | x | ----- | z | 80.28 | f | 73.75 | 63.52 | f | 53.55 | a | 40.23 | e | 56.63 | g | ||
2008 | 38.80 | h | 47.72 | f | 52.00 | d | 58.85 | c | 68.33 | b | 79.42 | e | 78.15 | 76.61 | d | 69.55 | a | 62.02 | c | 51.57 | h | 43.43 | h | 68.12 | d | |
2009 | 44.17 | e | 49.54 | d | 54.92 | f | 60.02 | f | 73.08 | a | 76.18 | e | 82.68 | 79.87 | 71.77 | b | 61.12 | g | 51.39 | b | 38.78 | f | 66.09 | d | ||
2010 | 39.26 | f | 44.19 | b | 48.94 | f | 59.89 | g | 69.02 | a | 81.43 | b | 79.71 | b | 79.95 | c | 75.74 | c | 64.29 | b | 49.23 | f | 46.75 | e | 67.63 | d |
2011 | 39.29 | g | 41.09 | e | 58.30 | d | 63.93 | g | 68.38 | a | 81.25 | b | 83.73 | a | 83.03 | 74.57 | 62.79 | 49.25 | 36.56 | 63.90 | b | |||||
2012 | 44.90 | 46.31 | 53.37 | 62.80 | 70.10 | j | 81.79 | a | 80.78 | b | 81.61 | 73.22 | 64.59 | b | 53.02 | b | ----- | z | 64.24 | b | ||||||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | 56.14 | m | 61.56 | d | 65.93 | b | 81.42 | d | 82.50 | f | 76.29 | x | 74.82 | b | 64.63 | a | 49.95 | h | 47.27 | i | 69.67 | g |
2015 | 45.20 | k | 50.77 | h | 49.75 | w | ----- | z | ----- | z | 79.74 | m | 82.97 | n | 81.72 | k | 75.78 | 65.71 | b | 49.63 | 40.73 | a | 57.96 | h | ||
2016 | 39.35 | a | 48.74 | 57.55 | 61.31 | a | 67.29 | 81.02 | a | 85.44 | 77.08 | 73.22 | 66.94 | 53.07 | 44.90 | 62.99 | ||||||||||
2017 | 43.79 | 50.92 | b | 59.00 | 62.67 | a | 68.82 | c | 80.55 | a | 82.69 | b | 79.36 | b | 74.52 | 65.18 | 58.69 | a | 44.61 | 64.23 | ||||||
2018 | 42.60 | a | 50.59 | a | 55.43 | a | 65.38 | a | 70.94 | w | 83.54 | r | 82.83 | m | 81.10 | k | 76.58 | l | 63.50 | k | 47.88 | q | ----- | z | 53.50 | h |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 42.11 | 47.41 | 53.92 | 61.40 | 70.27 | 79.36 | 81.28 | 79.00 | 72.90 | 62.72 | 50.34 | 41.16 | 61.75 | |||||||||||||
S.D. | 2.57 | 3.00 | 2.48 | 2.75 | 2.81 | 2.37 | 2.17 | 2.20 | 2.31 | 2.05 | 3.11 | 2.78 | 1.63 | |||||||||||||
SKEW | 0.10 | 0.03 | 0.30 | 0.15 | 0.37 | 0.27 | 0.13 | 0.22 | -0.28 | -0.01 | 0.40 | 0.18 | -0.31 | |||||||||||||
MAX | 47.43 | 53.30 | 59.00 | 67.19 | 76.13 | 84.36 | 85.58 | 83.03 | 77.07 | 66.94 | 58.69 | 46.75 | 64.23 | |||||||||||||
MIN | 37.82 | 41.09 | 49.32 | 54.91 | 65.23 | 75.77 | 76.98 | 75.53 | 67.88 | 58.45 | 43.96 | 36.48 | 58.70 | |||||||||||||
YRS | 23 | 26 | 29 | 27 | 30 | 30 | 30 | 26 | 31 | 26 | 27 | 25 | 12 |