YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.23 | 83.35 | 77.94 | 74.73 | 61.32 | ----- | z | ----- | z | 74.32 | g | |||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.07 | ----- | z | ----- | z | ----- | z | 75.07 | k | |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | 43.27 | e | 47.54 | e | 49.23 | e | 57.87 | 68.00 | a | 73.79 | b | 81.76 | b | 81.33 | g | 70.21 | f | 55.62 | r | 43.33 | r | 39.37 | a | 57.60 | d | |
2001 | 38.83 | b | 38.58 | b | 44.62 | e | 51.88 | d | 66.67 | y | 75.04 | d | 82.42 | g | 78.35 | e | 73.60 | 59.79 | c | 51.50 | d | 41.16 | f | 56.91 | c | |
2002 | 38.92 | g | 40.55 | h | 41.15 | e | 57.34 | a | 61.79 | b | 78.38 | a | 83.45 | b | 78.20 | a | 69.52 | c | 52.78 | d | 44.56 | c | 41.77 | a | 60.89 | b |
2003 | 44.61 | c | 36.88 | c | 44.52 | 55.90 | a | 62.83 | b | 68.36 | b | 84.57 | a | 79.97 | b | 67.07 | a | 64.43 | a | 42.43 | b | 44.58 | 58.01 | |||
2004 | 42.19 | 38.69 | 53.87 | 53.47 | 65.00 | 68.87 | 75.87 | a | 72.30 | a | 69.48 | a | 57.10 | 44.57 | 42.32 | 56.98 | ||||||||||
2005 | 45.26 | 42.14 | 44.19 | 52.60 | 62.00 | 71.83 | 84.39 | 76.23 | 71.80 | 59.55 | 51.17 | 39.10 | 58.35 | |||||||||||||
2006 | 43.39 | 38.46 | 44.03 | 59.41 | a | 67.16 | 78.43 | 79.16 | 77.03 | 65.13 | 57.58 | 49.40 | 39.42 | 58.22 | ||||||||||||
2007 | 33.61 | 42.25 | 52.13 | 50.97 | 64.45 | 75.20 | 81.13 | 80.61 | 71.57 | 62.10 | 52.23 | 35.42 | 58.47 | |||||||||||||
2008 | 35.23 | 40.69 | 44.42 | 52.67 | 61.61 | 74.33 | 83.06 | 76.42 | 67.50 | 59.19 | 52.63 | 38.94 | 57.22 | |||||||||||||
2009 | 41.71 | 44.50 | 49.33 | a | 51.27 | 62.67 | a | 68.60 | 77.42 | 76.52 | 68.63 | 48.58 | 50.77 | 32.87 | 56.07 | |||||||||||
2010 | 40.39 | 34.11 | 46.03 | 52.63 | 58.32 | 74.00 | 80.29 | 79.42 | 75.93 | 60.23 | 46.97 | 43.55 | 57.66 | |||||||||||||
2011 | 38.81 | 36.29 | 49.68 | 53.20 | 55.84 | 74.57 | 80.90 | 83.23 | 70.27 | 60.06 | 47.63 | 37.74 | 57.35 | |||||||||||||
2012 | 44.39 | 37.38 | 55.48 | 60.23 | 65.71 | 81.83 | 81.97 | 79.97 | 72.13 | 56.03 | 53.73 | 40.58 | 60.79 | |||||||||||||
2013 | 39.87 | 37.21 | 45.32 | 47.90 | 62.29 | 76.67 | 78.97 | 79.06 | 69.67 | 53.16 | 48.07 | 37.84 | 56.34 | |||||||||||||
2014 | 40.16 | 39.36 | 47.26 | 53.67 | 61.52 | 74.17 | 79.29 | 75.81 | 71.30 | 61.94 | 45.33 | 41.52 | 57.61 | |||||||||||||
2015 | 44.03 | 42.11 | 50.32 | 53.07 | 55.16 | 74.17 | a | 77.26 | 80.71 | 76.40 | 61.48 | 45.47 | 38.61 | 58.23 | ||||||||||||
2016 | 40.94 | 45.68 | a | 47.61 | 52.57 | 58.58 | 78.37 | 83.00 | 76.52 | 71.70 | 65.32 | 52.63 | 39.03 | 59.33 | ||||||||||||
2017 | 36.65 | 46.29 | 53.27 | a | 53.47 | 59.03 | 75.23 | 79.68 | 74.58 | 68.03 | 56.84 | 53.03 | 44.94 | 58.42 | ||||||||||||
2018 | 43.23 | 38.50 | 47.58 | 54.33 | 63.65 | 76.86 | a | 78.81 | 76.61 | 74.07 | b | 52.70 | a | 44.17 | 38.84 | 57.45 | ||||||||||
2019 | 39.07 | a | 40.21 | 43.94 | 55.13 | 52.72 | b | 67.80 | t | 81.38 | r | 79.90 | b | 75.07 | 49.79 | b | 46.63 | 41.42 | 52.39 | b | ||||||
2020 | 40.58 | 36.45 | 46.29 | 52.66 | a | 63.61 | 76.13 | 81.03 | 82.26 | 70.33 | 58.90 | 51.37 | 40.55 | 58.35 | ||||||||||||
2021 | 39.13 | 35.64 | 45.26 | 52.10 | 61.23 | 76.23 | 79.94 | 78.42 | 74.57 | 58.61 | 51.87 | 45.97 | 58.25 | |||||||||||||
2022 | 41.29 | 36.54 | 47.29 | 55.63 | 63.13 | 74.67 | 81.58 | 79.23 | 72.28 | e | 58.74 | 43.63 | 41.39 | 57.95 | ||||||||||||
2023 | 35.06 | 40.00 | 39.26 | 52.07 | 61.42 | 67.43 | 78.68 | 79.74 | 72.30 | 59.81 | 50.54 | f | 42.13 | 57.08 | a | |||||||||||
2024 | 37.07 | a | 42.32 | a | 45.42 | 54.57 | 57.23 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.84 | h | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.36 | 39.91 | 47.10 | 53.86 | 61.64 | 74.47 | 80.68 | 78.29 | 71.53 | 58.17 | 48.63 | 40.34 | 57.95 | |||||||||||||
S.D. | 3.21 | 3.57 | 3.89 | 2.73 | 3.71 | 3.48 | 2.34 | 2.46 | 2.98 | 4.23 | 3.61 | 3.01 | 1.04 | |||||||||||||
SKEW | -0.40 | 0.55 | 0.35 | 0.56 | -0.62 | -0.38 | -0.11 | -0.26 | -0.21 | -0.65 | -0.17 | -0.31 | 0.68 | |||||||||||||
MAX | 45.26 | 47.54 | 55.48 | 60.23 | 68.00 | 81.83 | 84.57 | 83.23 | 76.40 | 65.32 | 53.73 | 45.97 | 60.79 | |||||||||||||
MIN | 33.61 | 34.11 | 39.26 | 47.90 | 52.72 | 67.43 | 75.87 | 72.30 | 65.13 | 48.58 | 42.43 | 32.87 | 56.07 | |||||||||||||
YRS | 24 | 24 | 25 | 25 | 23 | 24 | 23 | 24 | 25 | 24 | 22 | 23 | 19 |