YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.10 | a | 57.74 | 36.90 | 32.74 | 48.12 | h | |||
1989 | 33.26 | 31.71 | 44.45 | 48.59 | a | 57.13 | 62.48 | a | 76.37 | a | 70.23 | 66.63 | 54.06 | 40.79 | a | 30.83 | a | 51.38 | ||||||||
1990 | 32.27 | a | 34.96 | b | 40.65 | 47.17 | 54.77 | 72.30 | 71.36 | c | 73.00 | 69.73 | 52.29 | 43.68 | b | 29.93 | b | 51.84 | ||||||||
1991 | 30.55 | 40.43 | 38.87 | 43.63 | 57.42 | 67.67 | 72.00 | a | 71.06 | 65.90 | 55.84 | 35.50 | 35.97 | 51.24 | ||||||||||||
1992 | 35.42 | 37.55 | 44.45 | b | 49.73 | 59.06 | 62.93 | 69.48 | 69.42 | 66.80 | 58.00 | 33.03 | 29.42 | 51.28 | ||||||||||||
1993 | 32.71 | 31.46 | 42.23 | a | 44.77 | 55.42 | 64.90 | 72.48 | 70.10 | 62.73 | 50.61 | 34.57 | 33.45 | 49.62 | ||||||||||||
1994 | 31.65 | 32.46 | 42.48 | 45.60 | 62.62 | b | 73.79 | a | 75.03 | 74.61 | 67.93 | 51.42 | 37.90 | a | 37.37 | a | 52.74 | |||||||||
1995 | 32.10 | 39.00 | 39.45 | 43.00 | 45.87 | 62.72 | a | 72.61 | 76.55 | 63.03 | 51.00 | 40.61 | b | 35.45 | b | 50.12 | ||||||||||
1996 | 27.84 | 36.76 | 39.97 | 45.23 | 57.45 | 70.13 | 75.70 | a | 74.39 | 68.90 | i | 53.84 | 42.14 | b | 30.08 | g | 52.35 | b | ||||||||
1997 | 30.89 | c | 33.56 | a | 44.00 | 40.87 | 55.62 | b | 68.07 | a | 75.48 | b | 69.84 | 65.79 | a | 54.03 | 36.03 | 34.64 | c | 50.74 | ||||||
1998 | 34.19 | 34.32 | 38.87 | 43.70 | 59.22 | d | 63.30 | 76.00 | b | 71.77 | 70.77 | 51.74 | 39.73 | d | 35.07 | c | 51.56 | |||||||||
1999 | 32.26 | 36.78 | a | 44.94 | 41.07 | 52.97 | b | 65.17 | 74.54 | c | 70.81 | 63.37 | 57.77 | 52.50 | b | 34.38 | b | 52.21 | ||||||||
2000 | 30.94 | 38.86 | 41.26 | 50.21 | b | 61.93 | a | 68.10 | 76.45 | 72.89 | d | 63.23 | 50.83 | a | 28.86 | b | 28.90 | 51.04 | ||||||||
2001 | 30.19 | 31.21 | 38.06 | 46.47 | 55.00 | d | 69.37 | 75.46 | c | 70.61 | 64.60 | 50.52 | 42.80 | 29.84 | 50.34 | |||||||||||
2002 | 28.81 | 31.04 | 34.03 | 48.11 | u | 55.67 | d | 72.40 | 77.32 | c | 70.84 | 63.30 | 46.61 | 36.10 | 32.18 | c | 49.84 | a | ||||||||
2003 | 34.97 | a | 28.36 | 34.29 | 45.37 | 56.67 | d | 62.67 | 79.56 | d | 72.10 | 61.13 | 56.61 | 34.03 | 32.81 | d | 49.88 | |||||||||
2004 | 31.42 | 31.28 | 45.23 | 44.80 | 55.70 | d | 62.57 | 68.82 | c | 66.10 | 60.40 | 48.48 | 38.00 | b | 31.66 | b | 48.70 | |||||||||
2005 | 34.71 | 34.75 | 37.42 | 46.29 | f | 54.19 | 63.67 | 76.35 | 68.55 | 65.27 | 52.90 | 37.96 | c | 26.71 | 50.23 | a | ||||||||||
2006 | 30.94 | 29.54 | 37.10 | 49.65 | d | 57.65 | 71.13 | 72.70 | d | 69.32 | 55.77 | 46.81 | 38.00 | c | 30.23 | 49.07 | ||||||||||
2007 | 27.90 | 31.07 | 41.52 | 42.69 | d | 55.00 | 66.93 | 74.23 | 71.46 | c | 63.10 | 52.23 | 43.37 | c | 25.86 | b | 49.61 | |||||||||
2008 | 24.13 | 28.93 | 34.74 | 40.26 | c | 50.61 | 65.53 | 74.15 | d | 69.03 | 61.67 | 52.03 | 41.11 | c | 26.97 | 47.43 | ||||||||||
2009 | 30.81 | 33.07 | 39.16 | 40.56 | c | 55.73 | a | 63.76 | a | 71.19 | 70.61 | c | 61.17 | 41.16 | 43.30 | c | 24.93 | d | 47.95 | |||||||
2010 | 32.58 | 28.43 | 39.87 | 45.08 | d | 50.97 | 70.03 | 73.79 | b | 71.68 | 68.50 | 51.21 | c | 36.11 | c | 32.41 | d | 50.06 | ||||||||
2011 | 26.26 | 26.81 | b | 38.55 | 41.54 | d | 48.26 | 67.87 | 74.42 | 75.03 | 62.23 | 50.07 | c | 36.46 | d | 30.35 | 48.15 | |||||||||
2012 | 32.54 | c | 29.07 | 45.23 | 51.30 | c | 58.84 | 75.93 | 76.62 | b | 74.87 | 66.63 | 49.77 | 43.81 | c | 29.90 | 52.88 | |||||||||
2013 | 30.15 | d | 30.07 | 38.03 | 41.30 | 54.57 | c | 73.00 | 74.42 | 72.97 | 63.07 | 47.77 | a | 38.96 | c | 28.74 | d | 49.42 | ||||||||
2014 | 30.19 | d | 29.57 | 39.90 | 44.63 | 55.34 | b | 68.93 | 73.29 | 69.13 | 65.87 | 52.97 | 36.48 | c | 31.42 | 49.81 | ||||||||||
2015 | 35.13 | 35.46 | 45.48 | 47.77 | 53.29 | c | 72.23 | 71.10 | 74.03 | 68.07 | 56.00 | 37.30 | 28.68 | 52.04 | ||||||||||||
2016 | 31.11 | c | 36.21 | 38.39 | 45.70 | 52.54 | c | 74.40 | 76.48 | 69.75 | c | 68.03 | 55.71 | 45.23 | 28.26 | d | 51.82 | |||||||||
2017 | 28.04 | e | 37.93 | 43.87 | 46.83 | 54.94 | 71.07 | b | 74.97 | 69.55 | 63.53 | 50.33 | a | 44.15 | c | 33.74 | 51.58 | |||||||||
2018 | 34.32 | 30.42 | b | 39.65 | 46.17 | a | 61.97 | b | 73.20 | 75.23 | 72.81 | 69.30 | 48.52 | 33.14 | b | 29.65 | 51.20 | |||||||||
2019 | 30.58 | 30.50 | b | 37.45 | 47.44 | c | 48.97 | 64.83 | a | 76.00 | c | 73.74 | 69.03 | 43.87 | 40.10 | 30.00 | c | 49.38 | ||||||||
2020 | 29.94 | 28.07 | 41.06 | 43.47 | 59.71 | 69.97 | 76.16 | 76.06 | 64.17 | 52.28 | b | 41.71 | b | 32.29 | 51.24 | |||||||||||
2021 | 30.81 | 27.07 | 38.19 | 44.04 | b | 54.42 | 72.97 | 76.13 | 72.81 | 69.67 | ----- | z | ----- | z | ----- | z | 54.01 | c | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.20 | 32.63 | 40.27 | 45.12 | 55.44 | 68.30 | 74.42 | 71.69 | 65.02 | 51.67 | 39.10 | 31.09 | 50.49 | |||||||||||||
S.D. | 2.56 | 3.77 | 3.21 | 2.98 | 3.80 | 4.10 | 2.34 | 2.39 | 3.29 | 3.87 | 4.52 | 3.02 | 1.43 | |||||||||||||
SKEW | -0.54 | 0.39 | 0.00 | 0.21 | -0.35 | 0.03 | -0.50 | 0.10 | -0.39 | -0.51 | 0.45 | 0.04 | -0.35 | |||||||||||||
MAX | 35.42 | 40.43 | 45.48 | 51.30 | 62.62 | 75.93 | 79.56 | 76.55 | 70.77 | 58.00 | 52.50 | 37.37 | 52.88 | |||||||||||||
MIN | 24.13 | 26.81 | 34.03 | 40.26 | 45.87 | 62.48 | 68.82 | 66.10 | 55.77 | 41.16 | 28.86 | 24.93 | 47.43 | |||||||||||||
YRS | 33 | 33 | 33 | 31 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 29 |