YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1977 | ----- | z | ----- | z | ----- | z | ----- | z | 59.63 | 80.72 | 86.77 | c | 82.57 | d | 71.68 | e | 66.65 | 53.40 | a | 48.73 | a | 68.77 | d | |||
1978 | 42.94 | 46.81 | a | 53.79 | 54.91 | b | 64.15 | g | 78.00 | d | 84.28 | a | 81.00 | d | 70.94 | c | 67.29 | c | 48.21 | a | ----- | z | 62.82 | b | ||
1979 | 35.50 | a | 41.74 | a | 49.89 | c | 59.10 | a | 67.38 | b | 76.86 | a | 84.37 | a | 78.34 | 77.76 | a | 65.00 | 48.28 | 45.45 | 60.81 | |||||
1980 | 44.87 | 48.50 | 48.15 | 61.81 | i | 62.13 | 76.71 | a | 83.84 | 83.85 | h | 73.79 | k | 64.03 | 53.23 | 50.00 | b | 59.05 | c | |||||||
1981 | 47.63 | 48.39 | 49.92 | 63.22 | 68.39 | 83.78 | 88.43 | a | 85.15 | 76.73 | 59.81 | 54.22 | 47.31 | b | 64.41 | |||||||||||
1982 | 40.42 | g | 46.48 | a | 49.19 | 57.78 | a | 66.85 | 75.09 | b | 81.82 | a | 81.05 | c | 72.05 | a | 57.46 | c | 46.69 | c | 41.08 | 61.41 | a | |||
1983 | 43.85 | 46.25 | b | 50.27 | a | 51.32 | 65.79 | 76.72 | 82.23 | 76.81 | 76.00 | a | 61.73 | 49.98 | 43.26 | 60.35 | ||||||||||
1984 | 42.81 | b | 45.21 | 52.74 | 56.08 | 74.25 | a | 75.85 | 80.85 | a | 76.90 | 74.35 | 55.35 | 48.06 | c | 38.70 | a | 60.10 | ||||||||
1985 | 39.57 | d | 42.00 | ----- | z | 62.63 | 69.08 | 80.88 | 84.73 | a | 84.00 | a | 69.23 | 61.68 | a | 46.80 | 44.05 | a | 62.24 | a | ||||||
1986 | 48.82 | c | 48.73 | 54.93 | c | 58.52 | a | 69.20 | c | 81.32 | 81.37 | 85.35 | 69.07 | 59.42 | a | ----- | z | 42.05 | 63.52 | a | ||||||
1987 | 38.58 | a | 44.23 | 49.00 | c | 62.32 | b | 66.30 | a | 78.42 | 80.34 | 81.66 | c | 74.45 | 65.36 | c | 47.80 | 36.47 | b | 60.41 | ||||||
1988 | 39.58 | a | 46.18 | a | 51.25 | a | 57.59 | a | 66.76 | b | 77.28 | a | 87.14 | b | 80.35 | a | 71.95 | a | 68.35 | 50.68 | 40.10 | 61.43 | ||||
1989 | 37.18 | 42.96 | 55.33 | a | 65.20 | 69.38 | c | 77.92 | 86.50 | 80.75 | a | 73.30 | 61.00 | 51.45 | 43.15 | 62.01 | ||||||||||
1990 | 40.14 | b | 40.93 | 53.98 | 61.28 | c | 66.05 | a | 78.36 | e | 83.83 | a | 80.20 | c | 74.86 | a | 63.39 | c | 49.60 | a | 37.48 | c | 60.84 | |||
1991 | 40.36 | c | 49.98 | a | 44.50 | b | 56.60 | 62.21 | b | 74.60 | a | 81.80 | a | 80.29 | b | 73.12 | a | 64.48 | a | 48.67 | 41.63 | a | 59.85 | |||
1992 | 39.47 | a | 46.54 | a | 49.61 | 62.20 | 69.73 | 75.35 | 80.55 | a | 83.23 | a | 75.32 | 64.28 | a | 45.08 | 36.77 | a | 60.68 | |||||||
1993 | 39.62 | b | 43.13 | a | 51.53 | 58.32 | b | 68.57 | b | 72.34 | a | 81.45 | 79.93 | c | 73.28 | a | 61.68 | 44.84 | a | 39.76 | 59.54 | |||||
1994 | 43.00 | a | 40.31 | a | 54.34 | 59.88 | d | 66.45 | 82.05 | b | 85.62 | a | 85.12 | b | 75.16 | a | 59.34 | 40.70 | 40.62 | b | 61.05 | |||||
1995 | 40.38 | c | 50.72 | a | 49.00 | b | 54.35 | 61.81 | b | 70.30 | ----- | z | 84.26 | 75.72 | 61.55 | 54.00 | b | 44.12 | a | 58.75 | a | |||||
1996 | 44.19 | 49.40 | 53.13 | a | 58.62 | b | 68.92 | a | 79.12 | 87.02 | a | 84.43 | a | 73.71 | b | 60.21 | 50.30 | 42.20 | a | 62.60 | ||||||
1997 | 42.16 | c | 45.39 | 55.29 | 57.73 | 72.22 | a | 77.00 | 78.95 | 84.40 | a | 72.37 | 58.90 | 49.39 | c | 38.52 | 61.03 | |||||||||
1998 | 42.35 | 41.68 | 48.35 | a | 51.07 | b | 60.15 | 69.83 | 83.10 | a | 82.78 | a | 69.72 | c | 56.77 | a | 47.07 | a | 41.40 | e | 57.86 | |||||
1999 | ----- | z | 44.84 | c | 52.05 | 50.58 | 64.17 | d | 75.83 | 79.81 | 78.08 | 72.03 | 63.63 | 52.52 | a | 41.90 | 61.40 | a | ||||||||
2000 | 44.22 | a | 45.71 | a | 50.36 | b | 61.33 | a | 70.67 | a | 78.93 | b | 83.98 | 82.82 | a | 73.67 | 59.18 | c | 42.54 | c | 43.71 | g | 63.04 | a | ||
2001 | 39.29 | b | 41.96 | a | 52.27 | 56.12 | a | 72.40 | b | 79.56 | c | 80.25 | i | 83.02 | f | 75.09 | g | 64.61 | c | 49.67 | i | 38.45 | i | 58.03 | e | |
2002 | 39.70 | f | 43.71 | d | 47.86 | b | 62.32 | b | 67.77 | a | 79.60 | e | 85.94 | g | 83.36 | f | 74.29 | a | 59.81 | d | 48.95 | h | 40.00 | f | 62.20 | e |
2003 | 46.79 | j | 43.56 | d | 49.85 | e | 53.21 | f | 65.57 | i | 78.72 | g | 86.88 | f | 82.23 | g | 74.50 | d | 68.84 | c | 44.40 | d | 39.89 | d | 53.51 | f |
2004 | 39.14 | f | 40.00 | e | 57.44 | d | 57.68 | 68.54 | g | 78.60 | d | 84.04 | d | 79.88 | b | 72.31 | c | 58.68 | c | 45.21 | f | 41.13 | d | 63.31 | c | |
2005 | 43.89 | c | 43.87 | b | 49.80 | f | 53.08 | f | 67.21 | j | 74.38 | m | 84.85 | h | 78.23 | i | 70.96 | g | 61.23 | k | 50.32 | e | 39.90 | g | 46.03 | i |
2006 | 41.98 | e | 45.17 | g | 45.44 | d | 54.52 | f | 69.33 | h | 80.33 | c | 84.74 | d | 80.65 | d | 70.77 | f | 57.70 | d | 49.83 | c | 40.95 | a | 60.20 | d |
2007 | 36.37 | a | 46.02 | 55.43 | d | 60.12 | a | 70.33 | d | 79.55 | a | 86.04 | c | 81.90 | e | 72.61 | b | 59.68 | a | 52.88 | a | 37.35 | 61.52 | |||
2008 | 37.62 | e | 42.72 | 51.22 | a | 55.28 | a | 61.93 | d | 77.81 | c | 84.59 | b | 84.45 | a | 74.95 | 62.93 | a | 53.36 | b | 39.68 | 60.54 | ||||
2009 | 42.74 | b | 42.27 | b | 49.85 | g | 56.09 | b | 73.71 | j | 72.50 | b | 85.28 | a | 81.77 | 76.83 | 58.30 | d | 51.90 | o | 39.03 | o | 64.47 | d | ||
2010 | 40.83 | m | 42.42 | j | 43.28 | v | ----- | z | 61.33 | a | 78.09 | a | 87.95 | 82.69 | 74.64 | a | 61.42 | a | 48.02 | 45.02 | a | 67.39 | d | |||
2011 | 43.15 | g | 41.33 | d | 51.30 | i | 56.81 | d | 61.70 | c | 74.00 | f | 80.69 | d | 84.25 | m | 73.27 | b | 62.32 | t | 47.59 | b | 40.20 | c | 57.37 | e |
2012 | 44.63 | p | ----- | z | 52.68 | l | 61.45 | j | ----- | z | 79.92 | 80.55 | 81.69 | 75.02 | a | 66.22 | m | ----- | z | 42.09 | n | 79.29 | h | |||
2013 | 38.88 | g | 42.33 | g | 56.95 | j | 61.55 | 68.26 | b | 81.92 | 84.64 | b | 79.33 | a | 74.28 | u | 58.44 | 50.03 | 40.92 | 65.64 | d | |||||
2014 | ----- | z | 50.32 | 54.38 | j | 61.45 | 69.60 | 78.85 | 83.90 | 79.23 | 75.68 | 65.56 | 52.45 | 44.23 | 66.13 | b | ||||||||||
2015 | 46.29 | 52.27 | 58.44 | 59.92 | 65.39 | 81.92 | 79.81 | 83.90 | 77.72 | 69.83 | p | 45.42 | e | 42.24 | d | 63.03 | a | |||||||||
2016 | 41.57 | a | 47.21 | l | 54.61 | m | 59.32 | 65.92 | a | 82.75 | 86.39 | 83.48 | h | ----- | z | 62.07 | p | 52.33 | 43.03 | p | 64.71 | f | ||||
2017 | 40.95 | b | 49.09 | 57.69 | 60.17 | 67.84 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.15 | g | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.60 | 45.24 | 51.69 | 58.45 | 66.72 | 77.96 | 83.64 | 81.67 | 73.77 | 61.79 | 49.12 | 41.76 | 60.88 | |||||||||||||
S.D. | 3.16 | 3.28 | 3.43 | 3.51 | 3.68 | 3.25 | 2.58 | 2.38 | 2.20 | 3.41 | 3.36 | 3.23 | 1.39 | |||||||||||||
SKEW | 0.23 | 0.31 | 0.09 | -0.48 | -0.22 | -0.67 | -0.03 | -0.25 | -0.30 | 0.29 | -0.47 | 0.64 | 0.45 | |||||||||||||
MAX | 48.82 | 52.27 | 58.44 | 65.20 | 74.25 | 83.78 | 88.43 | 85.35 | 77.76 | 68.84 | 54.22 | 50.00 | 64.41 | |||||||||||||
MIN | 35.50 | 40.00 | 44.50 | 50.58 | 59.63 | 69.83 | 78.95 | 76.81 | 69.07 | 55.35 | 40.70 | 36.47 | 57.86 | |||||||||||||
YRS | 30 | 35 | 31 | 34 | 34 | 37 | 35 | 33 | 34 | 35 | 34 | 32 | 17 |