YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 81.62 | b | 76.30 | a | 69.89 | c | 63.47 | a | 46.35 | 42.02 | 63.27 | f | ||
1980 | 45.47 | 47.09 | a | 50.92 | 57.84 | a | 67.62 | c | 82.15 | 83.98 | e | 78.74 | 72.58 | 57.73 | 44.60 | f | 44.23 | a | 62.58 | a | ||||||
1981 | 42.80 | a | 47.18 | 50.97 | 63.45 | 69.23 | 79.18 | 81.10 | b | 75.43 | a | 70.55 | 61.88 | a | ----- | z | 46.10 | 62.53 | a | |||||||
1982 | 41.67 | a | 45.48 | c | 54.45 | 61.29 | b | 67.48 | 77.66 | a | 80.65 | a | 79.69 | 73.47 | 60.17 | b | 48.48 | a | 40.37 | 60.90 | ||||||
1983 | 41.04 | c | 46.73 | b | 52.87 | 54.91 | a | 65.92 | 74.07 | b | 81.39 | 79.69 | 76.27 | 63.82 | 52.95 | 39.02 | a | 60.72 | ||||||||
1984 | 40.03 | 43.34 | a | 52.31 | 58.81 | a | 72.77 | a | 76.68 | 79.19 | 77.56 | 70.70 | 58.37 | d | 49.36 | a | 44.90 | 60.34 | ||||||||
1985 | 38.27 | 43.04 | a | 53.50 | 61.43 | 70.13 | 76.08 | 78.50 | 78.52 | a | 70.12 | b | 60.15 | 51.50 | 39.58 | a | 60.07 | |||||||||
1986 | 44.24 | 50.64 | 55.55 | 65.86 | b | 68.27 | g | 75.90 | a | 78.05 | 77.33 | b | 71.00 | 59.85 | 47.33 | 40.42 | 60.56 | a | ||||||||
1987 | 42.72 | h | 46.88 | 49.24 | 58.09 | a | 67.24 | 75.75 | 80.52 | 79.03 | 69.45 | 64.85 | 46.19 | i | 41.23 | 63.23 | b | |||||||||
1988 | 40.64 | b | 47.47 | 51.77 | 59.86 | a | 68.97 | 77.25 | f | 79.16 | 77.50 | 71.75 | 64.44 | 52.53 | 40.65 | 59.52 | a | |||||||||
1989 | 42.79 | 47.98 | b | 56.44 | 65.05 | 73.26 | 80.28 | a | 81.32 | a | 78.60 | 72.12 | b | 63.92 | a | 52.21 | a | 37.52 | a | 62.62 | ||||||
1990 | 41.03 | a | 44.67 | h | 53.75 | i | 63.40 | 70.14 | b | 84.55 | 79.50 | a | 74.82 | 72.48 | 61.48 | a | 54.21 | d | 42.52 | h | 66.85 | c | ||||
1991 | 41.64 | b | 49.27 | 52.57 | b | 60.62 | 71.06 | 77.25 | 77.94 | 77.29 | 68.92 | 63.11 | h | 47.94 | c | 43.64 | c | 60.74 | a | |||||||
1992 | 40.38 | a | 46.67 | 53.53 | 61.45 | a | 68.63 | a | 75.38 | 80.56 | 78.85 | a | 74.83 | 64.10 | a | 45.27 | 43.22 | a | 61.07 | |||||||
1993 | 46.64 | c | 46.80 | a | 54.60 | a | 61.80 | b | 70.69 | 79.18 | 81.82 | 80.10 | 70.60 | 60.93 | b | 48.04 | b | 43.31 | b | 62.04 | ||||||
1994 | 42.36 | b | 46.19 | d | 55.85 | a | 62.82 | 70.10 | 82.60 | 83.14 | b | 82.94 | 74.02 | a | 63.27 | 51.38 | b | 46.68 | c | 63.44 | ||||||
1995 | 44.40 | b | 52.12 | b | 55.60 | a | 59.13 | 71.73 | 77.58 | 81.57 | a | 81.10 | 73.83 | a | 64.27 | a | 54.30 | b | 45.84 | b | 63.46 | |||||
1996 | 43.37 | d | 50.16 | a | 51.05 | b | 60.29 | d | 76.63 | a | 80.17 | a | 79.56 | 75.33 | a | 70.70 | 63.37 | d | 52.55 | 43.39 | h | 63.93 | a | |||
1997 | 41.88 | b | 46.25 | 55.74 | 58.09 | a | 71.47 | a | 77.90 | a | 81.68 | a | 80.08 | 76.28 | 61.73 | 52.31 | f | 40.46 | g | 65.11 | b | |||||
1998 | 45.45 | 46.75 | b | 52.02 | 57.59 | a | 72.48 | 80.67 | 82.92 | 78.60 | 76.92 | 64.79 | 53.78 | 41.72 | a | 62.81 | ||||||||||
1999 | 46.02 | a | 50.70 | a | 55.18 | a | 61.12 | b | 71.31 | 77.57 | 80.81 | 80.23 | a | 73.55 | 61.58 | 54.45 | 42.27 | a | 62.90 | |||||||
2000 | 47.13 | a | 52.09 | a | 56.33 | a | 65.22 | 76.23 | a | 79.67 | 83.82 | 79.77 | 75.36 | b | 61.00 | a | 44.08 | 40.12 | a | 63.40 | ||||||
2001 | 40.00 | 48.39 | 53.38 | a | 63.25 | d | 73.03 | b | 80.83 | a | 82.24 | b | 82.21 | 75.43 | b | 65.53 | a | 54.02 | a | 45.66 | b | 63.66 | ||||
2002 | 45.02 | e | 43.52 | a | 53.02 | e | 68.50 | 72.08 | 83.45 | a | 81.47 | 83.06 | 74.82 | 61.82 | 47.15 | 46.06 | d | 63.33 | ||||||||
2003 | 45.16 | c | 48.34 | 54.16 | b | 63.53 | a | 72.15 | a | 79.24 | a | 82.32 | 80.76 | 74.57 | 65.65 | 53.77 | b | 41.71 | b | 63.45 | ||||||
2004 | 42.67 | a | 46.16 | a | 57.48 | a | 63.02 | 73.08 | 78.31 | a | 80.47 | 76.50 | 71.02 | 63.81 | 47.78 | 43.23 | 61.96 | |||||||||
2005 | 46.52 | 48.54 | 53.53 | 58.22 | a | 71.15 | a | 79.02 | 82.72 | a | 77.45 | 74.70 | 60.21 | 52.02 | 45.29 | 62.45 | ||||||||||
2006 | 44.58 | a | 49.06 | a | 57.05 | a | 68.28 | a | 73.29 | 79.53 | 81.06 | 76.08 | 67.22 | 59.77 | 50.70 | 41.35 | 62.33 | |||||||||
2007 | 36.82 | 49.88 | 56.58 | 61.40 | a | 67.63 | 78.02 | 79.44 | 79.58 | 74.98 | 64.31 | 50.83 | 42.98 | 61.87 | ||||||||||||
2008 | 43.81 | 50.00 | a | 54.33 | b | 59.10 | a | 72.48 | a | 81.63 | 77.73 | 78.65 | 68.12 | 61.82 | 49.43 | 44.66 | 61.81 | |||||||||
2009 | 44.76 | 51.18 | 58.73 | a | 64.42 | 75.26 | 79.77 | 84.08 | 80.15 | 71.03 | 62.10 | a | 50.88 | 41.29 | 63.64 | |||||||||||
2010 | 41.48 | 46.26 | a | 52.55 | 63.98 | 71.18 | 82.83 | 82.74 | 82.29 | 74.65 | 65.66 | 50.25 | 41.63 | a | 62.96 | |||||||||||
2011 | 41.31 | 42.60 | b | 59.82 | a | 67.70 | 71.26 | 82.15 | g | 85.46 | r | 86.11 | 74.88 | 65.16 | 50.40 | 42.76 | b | 60.20 | b | |||||||
2012 | 45.73 | 47.40 | 57.60 | a | 66.80 | 71.10 | a | 81.52 | 80.29 | 82.10 | 74.65 | 65.90 | 53.23 | 43.19 | 64.13 | |||||||||||
2013 | 42.26 | 44.41 | 55.84 | 63.17 | 69.73 | 81.72 | 78.35 | 80.00 | 73.40 | 61.44 | 48.90 | 40.52 | 61.64 | |||||||||||||
2014 | 41.63 | 48.70 | a | 54.44 | 61.52 | 68.02 | 83.48 | 81.32 | 77.74 | 73.47 | 64.50 | 45.71 | a | 43.69 | 62.02 | |||||||||||
2015 | 41.18 | 48.32 | 52.52 | 61.02 | 66.82 | 79.93 | 81.39 | 81.84 | 77.55 | 65.11 | 50.88 | 39.03 | 62.13 | |||||||||||||
2016 | 39.73 | 46.34 | 55.26 | 59.23 | 65.39 | 77.80 | 83.35 | 76.79 | 72.78 | 64.87 | 53.32 | 45.90 | 61.73 | |||||||||||||
2017 | 43.82 | a | 50.66 | 58.92 | 61.97 | 66.56 | 77.13 | 78.55 | j | ----- | z | 72.32 | 63.58 | 54.05 | 44.85 | a | 59.39 | b | ||||||||
2018 | 40.89 | d | 47.52 | f | 50.33 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.89 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 42.75 | 47.64 | 54.48 | 61.93 | 70.63 | 79.29 | 81.02 | 79.18 | 72.85 | 62.80 | 50.57 | 42.68 | 62.33 | |||||||||||||
S.D. | 2.43 | 2.45 | 2.44 | 3.17 | 2.75 | 2.54 | 1.74 | 2.44 | 2.50 | 2.17 | 2.90 | 2.35 | 1.08 | |||||||||||||
SKEW | -0.14 | -0.15 | 0.15 | 0.21 | 0.08 | 0.11 | -0.16 | 0.47 | -0.25 | -0.48 | -0.46 | -0.11 | -0.37 | |||||||||||||
MAX | 47.13 | 52.12 | 59.82 | 68.50 | 76.63 | 84.55 | 84.08 | 86.11 | 77.55 | 65.90 | 54.45 | 46.68 | 64.13 | |||||||||||||
MIN | 36.82 | 42.60 | 49.24 | 54.91 | 65.39 | 74.07 | 77.73 | 74.82 | 67.22 | 57.73 | 44.08 | 37.52 | 60.07 | |||||||||||||
YRS | 38 | 37 | 37 | 38 | 37 | 36 | 37 | 38 | 39 | 38 | 35 | 36 | 27 |