YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1988 | 33.55 | 42.03 | 43.29 | 58.80 | 64.80 | a | 75.97 | 79.65 | 78.42 | 69.40 | 64.60 | a | 44.20 | 37.90 | a | 57.72 | ||||||||||
1989 | 38.33 | a | 37.15 | b | 54.52 | b | ----- | z | 68.55 | 72.83 | ----- | z | 77.03 | ----- | z | 58.97 | 52.21 | a | 38.63 | a | 55.36 | c | ||||
1990 | 39.52 | 40.00 | 47.38 | b | 55.03 | 62.10 | 80.63 | 76.16 | 75.26 | 73.63 | 59.68 | 48.93 | 35.77 | 57.84 | ||||||||||||
1991 | 37.53 | a | 46.86 | 46.61 | 54.54 | b | 68.68 | 75.23 | 78.48 | 77.43 | a | 68.50 | 61.61 | 39.70 | 38.57 | a | 57.81 | |||||||||
1992 | 40.42 | 41.14 | a | 47.39 | 61.20 | 65.35 | 71.93 | b | 76.73 | a | 75.40 | a | 71.97 | 63.00 | 38.30 | 35.55 | 57.37 | |||||||||
1993 | 39.23 | 38.48 | a | 46.45 | 53.76 | a | 63.61 | 73.10 | 80.26 | 72.65 | 68.57 | 56.48 | 42.37 | 41.55 | 56.37 | |||||||||||
1994 | 39.92 | e | 39.30 | a | 49.65 | 53.97 | 65.06 | 79.76 | a | 81.77 | 80.13 | 71.87 | 58.39 | 45.43 | 43.65 | 59.07 | ||||||||||
1995 | 38.81 | 49.54 | 46.26 | 48.50 | b | 58.10 | 71.43 | 77.42 | 81.19 | 69.86 | a | 63.45 | 53.61 | b | 44.29 | 58.54 | ||||||||||
1996 | 41.23 | 45.21 | 47.20 | a | 56.30 | 71.94 | 77.27 | 80.35 | 77.74 | 69.07 | a | 59.94 | 48.90 | 39.13 | 59.52 | |||||||||||
1997 | 39.10 | a | 37.78 | a | 53.65 | 49.59 | a | 63.10 | b | 74.53 | 80.24 | b | 75.81 | 72.53 | 60.16 | 42.67 | 35.94 | 57.09 | ||||||||
1998 | 40.58 | 38.57 | 45.27 | a | 50.53 | 68.13 | 75.20 | 79.77 | 78.39 | 76.70 | 60.35 | 51.27 | 44.19 | 59.08 | ||||||||||||
1999 | 43.61 | 46.96 | a | 53.00 | a | 49.64 | b | 61.06 | 73.45 | a | 79.07 | a | 75.81 | 70.20 | 63.77 | 58.63 | 40.71 | 59.66 | ||||||||
2000 | 43.45 | 48.82 | a | 47.21 | b | 58.67 | 68.53 | a | 76.45 | a | 83.06 | 81.94 | 74.33 | 60.39 | c | 40.47 | 41.55 | b | 60.41 | |||||||
2001 | 38.70 | a | 43.26 | a | 45.42 | g | 59.14 | b | 65.53 | a | 77.48 | a | 83.03 | b | 78.86 | b | 74.92 | d | 63.42 | e | 56.54 | f | 41.22 | d | 62.56 | b |
2002 | 41.29 | c | 41.00 | a | 46.13 | a | 63.90 | a | 67.73 | a | 83.24 | a | 84.77 | e | 81.35 | 73.03 | a | 56.39 | c | 47.47 | 40.33 | a | 60.55 | |||
2003 | 48.00 | a | 41.76 | k | 45.18 | c | 59.63 | 68.83 | a | 72.94 | n | 86.90 | b | 80.65 | 71.28 | l | 67.16 | 49.68 | b | 44.03 | b | 61.12 | c | |||
2004 | 41.66 | b | 37.00 | b | 55.93 | a | 57.53 | o | 68.87 | a | 75.00 | a | 77.84 | 75.63 | a | 72.10 | a | 58.81 | 46.20 | 40.97 | a | 59.09 | a | |||
2005 | 43.71 | 40.43 | 45.07 | a | 55.30 | c | 66.83 | b | 75.30 | c | 85.03 | b | 76.68 | 74.42 | d | 61.67 | a | 54.13 | 40.52 | 59.92 | ||||||
2006 | 42.32 | 43.04 | a | 47.63 | a | 62.93 | b | 69.58 | 80.63 | 80.79 | b | 75.70 | a | 66.83 | 58.97 | 51.18 | b | 39.10 | a | 59.89 | ||||||
2007 | 34.00 | h | 42.68 | 55.60 | a | 56.78 | c | 65.93 | b | 77.17 | 82.35 | e | 81.81 | 73.89 | b | 63.30 | d | 52.50 | d | 37.50 | e | 62.68 | a | |||
2008 | 34.73 | a | 40.41 | 46.06 | 56.00 | 63.68 | 77.28 | a | 82.42 | 76.71 | 71.60 | 61.94 | 51.27 | 38.32 | 58.37 | |||||||||||
2009 | 42.12 | f | 45.39 | 50.42 | 53.93 | 67.74 | 71.30 | 81.90 | 80.52 | 72.16 | k | 54.97 | a | 53.87 | 34.58 | 59.46 | b | |||||||||
2010 | 41.39 | 35.18 | 45.81 | 57.33 | 64.81 | 79.17 | 81.71 | 79.42 | 78.20 | 64.42 | 49.27 | 45.45 | 60.18 | |||||||||||||
2011 | 41.26 | 37.75 | 52.61 | 58.27 | 63.19 | 80.50 | 86.16 | 83.39 | 72.00 | 62.87 | a | 49.80 | 37.52 | 60.44 | ||||||||||||
2012 | 44.67 | a | 38.83 | 55.93 | c | 63.80 | 70.42 | 83.17 | 84.03 | 81.87 | 73.70 | 64.19 | 54.57 | 41.29 | 63.04 | |||||||||||
2013 | 39.26 | 38.35 | b | 48.90 | 53.27 | 65.16 | 81.27 | 80.00 | 80.06 | 73.23 | 58.77 | a | 47.77 | 39.27 | a | 58.77 | ||||||||||
2014 | 40.13 | 43.61 | 47.32 | 57.20 | 62.94 | 76.90 | 81.17 | g | ----- | z | 75.07 | 64.77 | 47.80 | 42.77 | 55.85 | b | ||||||||||
2015 | 42.06 | 44.89 | 52.71 | 57.47 | 61.84 | 79.93 | 78.48 | 79.90 | 77.37 | 64.68 | 48.67 | 39.94 | 60.66 | |||||||||||||
2016 | 39.84 | 44.72 | 52.35 | 54.70 | 61.94 | 81.23 | 83.94 | 75.94 | 73.47 | 67.35 | 54.80 | 42.23 | 61.04 | |||||||||||||
2017 | 37.16 | 48.25 | 56.23 | 57.47 | 63.39 | 78.80 | 81.55 | 76.60 | a | 72.40 | 62.90 | a | 55.30 | 45.00 | 61.25 | |||||||||||
2018 | 46.71 | 45.29 | 50.71 | 60.97 | 72.45 | ----- | z | 82.25 | s | ----- | z | 76.40 | 58.58 | 45.63 | ----- | z | 57.09 | d | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.63 | 42.06 | 49.42 | 56.50 | 65.80 | 77.11 | 81.21 | 78.35 | 72.69 | 61.48 | 48.89 | 40.25 | 59.33 | |||||||||||||
S.D. | 3.10 | 3.90 | 3.89 | 4.06 | 3.37 | 3.44 | 2.79 | 2.64 | 2.81 | 3.08 | 5.00 | 2.94 | 1.57 | |||||||||||||
SKEW | 0.14 | 0.23 | 0.45 | -0.08 | -0.01 | 0.02 | 0.16 | 0.00 | -0.07 | -0.12 | -0.34 | -0.04 | 0.16 | |||||||||||||
MAX | 48.00 | 49.54 | 56.23 | 63.90 | 72.45 | 83.24 | 86.90 | 83.39 | 78.20 | 67.35 | 58.63 | 45.45 | 63.04 | |||||||||||||
MIN | 33.55 | 35.18 | 43.29 | 48.50 | 58.10 | 71.30 | 76.16 | 72.65 | 66.83 | 54.97 | 38.30 | 34.58 | 56.37 | |||||||||||||
YRS | 29 | 30 | 30 | 29 | 31 | 29 | 28 | 29 | 28 | 31 | 30 | 30 | 23 |