YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.87 | 54.93 | c | 36.97 | a | 23.62 | a | 17.57 | c | 39.39 | g | |
1983 | 18.67 | a | 23.43 | 30.32 | c | 33.93 | 44.63 | a | 54.29 | b | 65.39 | 64.81 | 54.03 | a | 38.29 | 27.50 | 8.62 | b | 38.66 | |||||||
1984 | 14.94 | 21.07 | a | 26.45 | 34.10 | 49.48 | b | 57.38 | a | 64.48 | 62.90 | 51.72 | a | 37.71 | 26.30 | 22.58 | 39.09 | |||||||||
1985 | 14.17 | a | 15.19 | a | 29.71 | 40.81 | c | 50.07 | b | 56.40 | 63.39 | 60.73 | a | 51.57 | 37.46 | e | 24.62 | a | 14.87 | a | 38.25 | |||||
1986 | 21.13 | 23.54 | 33.32 | 40.86 | a | 47.32 | 59.07 | 63.77 | 61.40 | a | 52.47 | 37.58 | 28.14 | a | 19.74 | 40.70 | ||||||||||
1987 | 17.66 | b | 27.78 | a | 26.71 | 38.03 | 48.93 | a | 58.37 | 65.45 | 59.71 | 50.10 | 34.48 | 25.57 | 16.81 | 39.13 | ||||||||||
1988 | 9.00 | a | 21.10 | 26.45 | 36.53 | 44.35 | 61.00 | 61.94 | 62.94 | 50.17 | 38.42 | 29.41 | a | 16.77 | 38.17 | |||||||||||
1989 | 17.13 | 12.18 | 27.84 | 38.20 | 48.77 | 54.87 | 64.16 | 61.03 | 52.21 | a | 38.55 | 24.23 | 11.67 | a | 37.57 | |||||||||||
1990 | 21.20 | a | 21.75 | 28.61 | 37.90 | 44.61 | 60.30 | 61.58 | 60.10 | 56.66 | a | 36.20 | a | 30.50 | 11.68 | 39.26 | ||||||||||
1991 | 17.32 | 21.79 | 30.53 | a | 37.47 | 48.73 | a | 61.10 | 62.23 | 61.26 | 49.67 | 36.16 | 26.03 | 20.16 | 39.37 | |||||||||||
1992 | 19.19 | 25.41 | 31.52 | 39.20 | 50.39 | 53.77 | 59.57 | a | 56.90 | 50.53 | 35.65 | 21.40 | 15.84 | 38.28 | ||||||||||||
1993 | 15.27 | a | 17.07 | 29.29 | 35.57 | 46.16 | 55.50 | 62.07 | a | 59.07 | a | 46.63 | 34.33 | a | 21.47 | 17.29 | 36.64 | |||||||||
1994 | 16.26 | 15.22 | a | 29.77 | a | 34.17 | a | 49.90 | a | 61.86 | a | 59.50 | a | 63.35 | 52.03 | a | 38.87 | 27.17 | 20.47 | a | 39.05 | |||||
1995 | 18.97 | a | 22.44 | a | 29.13 | a | 33.97 | 43.58 | 56.50 | 60.03 | a | 64.53 | a | 51.77 | 32.94 | 28.10 | a | 19.32 | 38.44 | |||||||
1996 | 11.67 | a | 16.86 | 23.48 | 38.27 | 49.48 | 60.40 | 62.42 | 60.42 | 50.07 | 37.87 | 26.03 | a | 20.00 | 38.08 | |||||||||||
1997 | 17.35 | 21.46 | 29.74 | 31.70 | 47.87 | 58.37 | 63.27 | a | 63.29 | 54.69 | a | 37.45 | 25.00 | a | 16.87 | 38.92 | ||||||||||
1998 | 22.66 | b | 25.75 | 26.55 | 36.33 | 49.97 | 53.70 | 64.26 | 59.81 | 55.23 | 39.45 | 29.47 | 17.83 | b | 40.08 | |||||||||||
1999 | 22.23 | a | 23.78 | a | 29.03 | 34.28 | a | 46.16 | 54.41 | a | 64.19 | 62.13 | 50.71 | b | 35.40 | a | 28.80 | 21.13 | 39.36 | |||||||
2000 | 21.14 | b | 23.79 | a | 31.46 | c | 37.54 | b | 48.90 | 58.00 | 65.23 | i | 63.07 | d | 52.36 | b | 40.18 | c | 22.45 | a | 17.71 | 37.87 | a | |||
2001 | 18.61 | c | 19.14 | 30.21 | b | 40.33 | 49.48 | 59.23 | 66.93 | c | 63.34 | b | 52.10 | a | 36.97 | 34.26 | k | 19.72 | b | 41.46 | a | |||||
2002 | 18.71 | 20.07 | 22.00 | 40.14 | b | 48.50 | c | 64.07 | a | 66.97 | a | 63.87 | a | 53.86 | b | 36.06 | 26.89 | b | 20.93 | a | 40.17 | |||||
2003 | 22.70 | a | 19.54 | 33.06 | 42.20 | e | 49.48 | 56.14 | a | 68.69 | b | 64.03 | 49.64 | b | 40.40 | a | 26.77 | 20.13 | a | 41.07 | ||||||
2004 | 16.43 | a | 20.21 | a | 34.83 | a | 39.21 | b | 51.53 | a | 56.24 | a | 60.60 | a | 57.83 | b | 50.55 | a | 40.11 | d | 26.93 | c | 20.82 | c | 39.61 | |
2005 | 21.83 | g | 25.16 | c | 30.65 | e | 35.41 | m | 47.52 | h | 56.92 | d | 62.88 | f | 60.88 | e | 55.62 | d | 39.74 | d | 28.38 | d | 16.08 | f | 42.48 | e |
2006 | 21.35 | e | 18.00 | e | 27.42 | e | 40.20 | e | 48.42 | e | 60.62 | i | 64.71 | g | 61.80 | f | ----- | z | 38.15 | e | 27.81 | d | 18.66 | b | 30.00 | d |
2007 | 6.43 | a | 16.48 | a | 32.15 | d | 36.71 | b | 47.87 | a | 55.84 | e | 62.93 | c | 64.46 | e | 54.62 | a | 39.93 | a | 25.57 | b | 15.59 | d | 38.22 | |
2008 | 15.57 | a | 19.48 | b | 28.22 | d | 34.37 | 43.17 | b | 57.63 | c | 64.68 | 62.03 | a | 52.14 | a | 40.84 | 30.57 | 20.52 | b | 39.10 | |||||
2009 | 20.87 | 23.93 | 28.52 | b | 36.33 | 49.19 | 55.79 | a | 61.85 | d | 59.03 | 49.75 | f | 34.58 | 28.17 | 14.08 | f | 39.83 | b | |||||||
2010 | 14.91 | h | 18.96 | 28.87 | 40.80 | 50.11 | l | 61.90 | 63.61 | h | 63.79 | c | 54.63 | 42.52 | 25.96 | c | 22.03 | 39.94 | c | |||||||
2011 | 13.23 | 13.89 | 28.81 | 36.90 | 45.06 | 59.23 | 65.16 | 65.61 | 52.17 | 38.71 | 26.93 | 11.65 | 38.11 | |||||||||||||
2012 | 21.55 | 20.34 | 33.45 | 42.07 | 48.77 | 63.10 | a | 67.06 | 61.81 | 51.57 | b | 35.68 | 27.57 | 18.65 | 40.97 | |||||||||||
2013 | 14.06 | 19.14 | 25.35 | 32.60 | 47.74 | 59.63 | 63.30 | u | 65.38 | w | 54.12 | e | 36.00 | 26.30 | 17.16 | 33.21 | b | |||||||||
2014 | 15.71 | 17.46 | 26.61 | 37.63 | 47.19 | 57.97 | 63.06 | 59.42 | 52.53 | 40.94 | 23.23 | 19.16 | 38.41 | |||||||||||||
2015 | 19.16 | 22.36 | 29.58 | 37.87 | 46.55 | 59.73 | 63.32 | 61.61 | 56.83 | 44.94 | 28.10 | 21.26 | 40.94 | |||||||||||||
2016 | 18.58 | 24.29 | a | 28.32 | 36.13 | 45.46 | c | 60.00 | 63.45 | 60.06 | 53.80 | 41.58 | 31.27 | 11.90 | 39.57 | |||||||||||
2017 | 16.42 | 24.39 | 31.94 | 37.33 | 46.30 | d | 57.93 | 63.35 | 58.77 | 53.30 | 37.65 | 30.50 | 16.97 | 39.57 | ||||||||||||
2018 | 16.35 | 17.32 | 26.03 | 32.00 | 51.23 | 60.10 | 63.35 | 58.97 | 55.13 | 36.97 | 26.27 | 16.26 | 38.33 | |||||||||||||
2019 | 16.84 | 14.61 | 25.29 | 37.73 | 43.71 | 55.93 | 63.35 | 62.48 | 57.17 | 28.65 | 24.03 | 20.90 | 37.56 | |||||||||||||
2020 | 19.35 | 17.93 | 32.32 | 36.57 | 51.26 | 61.37 | 64.45 | 63.45 | 51.23 | 35.03 | 29.40 | 19.03 | 40.12 | |||||||||||||
2021 | 19.55 | 13.68 | 30.45 | 36.47 | 48.32 | 58.70 | 64.26 | 61.94 | 53.40 | 40.39 | 28.40 | 23.29 | 39.90 | |||||||||||||
2022 | 16.00 | 15.71 | 26.74 | 37.90 | 48.03 | 59.97 | 65.71 | 62.65 | 55.47 | 40.68 | 24.40 | 14.29 | 38.96 | |||||||||||||
2023 | 18.29 | 17.46 | 26.68 | 36.87 | 51.48 | b | 56.43 | 62.74 | 63.29 | 55.10 | 38.74 | 27.37 | 23.16 | 39.80 | ||||||||||||
2024 | 16.23 | 25.48 | 31.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.24 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 17.45 | 20.11 | 29.01 | 37.18 | 47.90 | 58.23 | 63.60 | 61.77 | 52.81 | 37.84 | 26.75 | 17.98 | 39.10 | |||||||||||||
S.D. | 3.50 | 3.83 | 2.74 | 2.63 | 2.31 | 2.60 | 2.07 | 2.09 | 2.30 | 2.84 | 2.42 | 3.45 | 1.04 | |||||||||||||
SKEW | -0.95 | -0.09 | -0.20 | -0.12 | -0.43 | 0.15 | 0.14 | -0.34 | -0.18 | -0.45 | -0.32 | -0.79 | 0.02 | |||||||||||||
MAX | 22.70 | 27.78 | 34.83 | 42.20 | 51.53 | 64.07 | 68.69 | 65.61 | 57.17 | 44.94 | 31.27 | 23.29 | 41.07 | |||||||||||||
MIN | 6.43 | 12.18 | 22.00 | 31.70 | 43.17 | 53.70 | 59.50 | 56.90 | 46.63 | 28.65 | 21.40 | 8.62 | 36.64 | |||||||||||||
YRS | 40 | 42 | 42 | 40 | 39 | 40 | 36 | 40 | 40 | 42 | 41 | 40 | 34 |