YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.68 | 58.19 | 49.11 | c | 35.13 | h | 22.89 | k | 20.64 | i | 56.33 | i | ||
1976 | 12.62 | j | 21.20 | i | 24.57 | h | 36.54 | b | 44.81 | 52.23 | 60.03 | 57.32 | 49.73 | 33.55 | 24.19 | i | 19.05 | l | 47.74 | e | ||||||
1977 | 9.52 | j | 20.22 | j | 24.65 | e | 38.41 | a | 47.94 | 57.63 | 60.58 | 59.26 | 49.43 | 34.52 | b | 25.05 | i | 20.80 | k | 46.55 | d | |||||
1978 | 10.90 | j | 15.42 | i | 28.95 | i | 37.87 | 43.74 | 56.57 | 62.71 | 57.77 | 49.03 | 38.29 | 23.50 | l | 11.60 | k | 49.43 | e | |||||||
1979 | 2.77 | i | 15.21 | i | 28.67 | g | 36.34 | a | 43.29 | 53.50 | 60.35 | 55.13 | 51.03 | 36.68 | 19.90 | j | 15.95 | l | 48.05 | e | ||||||
1980 | 12.14 | i | 18.79 | j | 22.77 | i | 33.08 | d | 44.00 | 55.40 | 62.97 | 58.84 | 49.67 | 33.94 | 25.77 | h | 23.68 | l | 48.27 | e | ||||||
1981 | 15.38 | j | 13.16 | i | 27.52 | j | 38.82 | h | 43.75 | k | 56.80 | e | 61.83 | h | 59.00 | c | 51.47 | 39.06 | 27.54 | f | 13.38 | j | 51.58 | h | ||
1982 | 10.10 | k | 9.94 | j | 25.74 | h | 29.52 | i | 42.97 | 51.53 | ----- | z | 60.39 | 51.03 | a | 32.92 | g | 21.35 | j | 16.68 | l | 51.48 | h | |||
1983 | 18.29 | j | 22.75 | d | 29.07 | a | 31.27 | 42.45 | 51.53 | 61.35 | 62.37 | a | 51.21 | a | 38.27 | a | 27.41 | a | 9.57 | c | 38.84 | a | ||||
1984 | 12.16 | 21.32 | d | 24.25 | c | 30.52 | a | 45.48 | 54.59 | a | 61.90 | 61.19 | d | 50.17 | 35.97 | a | 25.38 | f | 22.90 | 38.22 | a | |||||
1985 | 14.32 | c | 12.77 | b | 30.10 | b | 38.72 | a | 47.70 | a | 55.30 | 60.58 | 58.50 | a | 48.29 | b | 35.19 | 21.79 | a | 14.29 | 36.46 | |||||
1986 | 22.21 | c | 22.00 | b | 32.23 | 38.41 | a | 44.68 | 55.83 | a | 59.71 | c | 58.48 | 48.27 | 36.90 | 28.07 | 18.30 | a | 38.76 | |||||||
1987 | 18.67 | a | 24.89 | a | ----- | z | 35.55 | a | 48.19 | 55.97 | a | 60.23 | 58.81 | 49.69 | a | 34.63 | a | 25.37 | 18.20 | a | 39.11 | a | ||||
1988 | 9.37 | a | 21.32 | d | 25.23 | a | 35.36 | b | 43.45 | 58.45 | a | 60.52 | 59.68 | 48.53 | 38.19 | 24.90 | 16.58 | 36.80 | ||||||||
1989 | 19.03 | a | 10.04 | 28.65 | 36.10 | 47.35 | 52.50 | 61.77 | 58.26 | 49.57 | 37.27 | a | 25.80 | 14.65 | 36.75 | |||||||||||
1990 | 22.00 | 20.11 | 28.71 | 36.43 | 41.84 | 55.77 | 58.94 | 56.74 | 53.20 | 37.48 | 27.83 | 10.32 | 37.45 | |||||||||||||
1991 | 14.94 | 20.93 | 26.61 | 33.25 | b | 45.30 | a | 56.43 | 60.06 | 59.42 | 47.76 | a | 34.47 | a | 21.53 | 17.72 | b | 36.54 | ||||||||
1992 | 16.48 | b | 24.21 | 31.41 | d | 38.69 | a | 47.90 | a | 52.14 | a | 58.53 | a | 56.65 | 48.29 | b | 37.57 | c | 24.14 | a | 19.77 | e | 37.98 | |||
1993 | 14.67 | g | 19.52 | c | 27.73 | a | 35.70 | c | 45.71 | 53.79 | a | 59.63 | a | 58.00 | b | 45.23 | 33.78 | d | 19.89 | c | 15.77 | e | 37.71 | a | ||
1994 | 15.37 | d | 14.83 | e | 28.64 | c | 33.66 | a | 45.58 | 55.83 | 55.42 | 57.45 | 49.20 | 35.77 | 23.85 | d | 19.54 | c | 36.26 | |||||||
1995 | 16.28 | b | 18.12 | c | 24.41 | b | 29.59 | a | 40.55 | 51.30 | 56.48 | 59.83 | a | 48.79 | b | 31.19 | 24.89 | b | 16.81 | e | 34.85 | |||||
1996 | 8.52 | d | 16.20 | d | 20.13 | 35.90 | a | 47.10 | a | 56.23 | 60.42 | 57.23 | 48.03 | 35.10 | b | 25.75 | b | 19.71 | g | 37.33 | a | |||||
1997 | 15.58 | e | 17.92 | c | 27.62 | b | 30.40 | 43.55 | 54.70 | 58.77 | 57.61 | 50.86 | a | 33.13 | 18.43 | b | 19.59 | b | 35.68 | |||||||
1998 | 18.34 | b | 22.00 | b | 22.13 | 32.41 | a | 44.77 | a | 50.07 | a | 58.35 | 55.74 | 49.73 | 35.00 | a | 27.84 | e | 14.85 | d | 35.94 | |||||
1999 | 19.28 | f | 23.47 | i | 29.68 | c | 33.57 | b | 43.50 | a | 51.00 | b | 59.23 | 59.50 | c | 47.37 | 36.27 | a | 29.28 | a | 19.93 | a | 40.93 | b | ||
2000 | 18.07 | a | 23.11 | b | 28.97 | 34.93 | 45.73 | a | 55.24 | a | 62.58 | 60.00 | 49.20 | 39.33 | a | 20.39 | b | 14.70 | d | 37.69 | ||||||
2001 | ----- | z | 17.45 | h | 26.76 | b | 35.10 | a | 39.93 | a | 53.80 | 62.42 | 58.81 | 49.40 | 35.03 | a | 27.96 | d | 18.11 | c | 40.73 | b | ||||
2002 | 15.27 | e | 13.48 | g | 21.56 | f | 35.45 | a | 43.47 | a | 57.50 | 62.06 | 56.80 | a | 49.97 | a | 32.33 | a | 25.53 | 20.55 | 39.89 | b | ||||
2003 | 21.74 | 15.77 | b | 28.43 | c | 37.90 | 45.00 | b | 50.31 | a | 60.97 | b | 58.36 | c | 43.63 | 37.84 | 25.82 | b | 20.96 | c | 37.23 | |||||
2004 | 14.52 | 19.59 | 30.41 | b | 34.20 | 44.61 | 48.90 | 54.23 | 51.53 | a | 44.03 | 33.67 | d | 25.70 | 17.13 | a | 34.88 | |||||||||
2005 | 19.20 | a | 21.93 | 23.39 | 31.30 | 40.93 | a | 49.00 | 56.45 | 53.32 | 46.27 | 37.52 | 26.67 | 16.50 | a | 35.21 | ||||||||||
2006 | 22.52 | 15.96 | 26.55 | 37.27 | 47.00 | 59.13 | 62.77 | 60.32 | 45.97 | 36.52 | 26.33 | 21.61 | 38.50 | |||||||||||||
2007 | 7.55 | 18.93 | 31.35 | 33.53 | 46.16 | 54.03 | 61.81 | 62.16 | 51.13 | 39.13 | 26.73 | 19.74 | 37.69 | |||||||||||||
2008 | 16.71 | 19.07 | 26.84 | 31.80 | 44.19 | 54.40 | 62.71 | 59.16 | 50.10 | 37.45 | 30.31 | a | 18.71 | 37.62 | ||||||||||||
2009 | 22.29 | 22.29 | 27.71 | 34.47 | 48.74 | 54.60 | 60.55 | 58.16 | 49.60 | 33.65 | 29.13 | 13.90 | 37.92 | |||||||||||||
2010 | 16.84 | 19.68 | 29.03 | 36.27 | 43.77 | 57.07 | 63.00 | 60.77 | 51.63 | 41.45 | 24.07 | 19.94 | 38.63 | |||||||||||||
2011 | 13.97 | a | 13.11 | 28.45 | 35.87 | 43.00 | 56.70 | 64.48 | 63.97 | 52.27 | 38.16 | 27.57 | 13.74 | 37.61 | ||||||||||||
2012 | 22.39 | 20.38 | 31.48 | 40.70 | 48.00 | 60.50 | 65.42 | 60.00 | 50.70 | 36.77 | 27.53 | 17.61 | 40.12 | |||||||||||||
2013 | 13.40 | a | 18.75 | 25.29 | 32.17 | 46.13 | 57.77 | 62.26 | 61.45 | 55.70 | 37.58 | 25.63 | 16.87 | a | 37.75 | |||||||||||
2014 | 16.03 | 16.85 | a | 25.61 | 36.40 | 46.68 | 55.70 | 62.42 | 59.26 | 51.17 | 41.19 | 23.67 | 18.29 | 37.77 | ||||||||||||
2015 | 20.10 | 21.54 | 29.70 | a | 37.77 | 46.06 | 59.33 | 61.10 | 59.52 | 54.13 | 44.10 | 26.73 | 20.00 | 40.01 | ||||||||||||
2016 | 18.77 | 24.72 | 28.45 | 37.07 | 44.45 | 59.70 | 62.58 | 58.61 | 52.50 | 41.39 | 30.10 | 14.52 | 39.41 | |||||||||||||
2017 | 21.00 | 27.93 | 31.81 | 38.00 | 44.77 | 57.03 | 61.81 | 58.19 | 52.97 | 37.94 | 31.90 | 18.68 | 40.17 | |||||||||||||
2018 | 18.58 | 19.43 | 27.26 | 32.40 | 50.35 | 60.13 | 63.45 | 59.35 | 53.80 | 38.42 | 24.33 | 19.04 | h | 40.68 | a | |||||||||||
2019 | 19.20 | a | 16.25 | 25.84 | 36.87 | 41.84 | 52.83 | 62.74 | 62.13 | 56.20 | 31.68 | 24.83 | 21.00 | 37.62 | ||||||||||||
2020 | 21.06 | 15.45 | 29.45 | 32.87 | 47.81 | 57.70 | 62.74 | 61.77 | 49.13 | 35.13 | 28.57 | 21.16 | 38.57 | |||||||||||||
2021 | 18.45 | 15.54 | 27.52 | 33.27 | 46.23 | 57.50 | 62.03 | 60.48 | 53.77 | 40.39 | 30.60 | 25.29 | 39.25 | |||||||||||||
2022 | 15.94 | 14.25 | 25.13 | 33.27 | 44.84 | 56.70 | 62.71 | 61.55 | 53.13 | 39.71 | 23.50 | 14.77 | 37.12 | |||||||||||||
2023 | 19.03 | 14.07 | 22.68 | 33.33 | 48.94 | 53.97 | 62.00 | 61.45 | 53.53 | 38.16 | 29.23 | 23.00 | 38.28 | |||||||||||||
2024 | 16.00 | 24.52 | 29.39 | 35.40 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.30 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 17.15 | 19.18 | 27.53 | 35.00 | 45.12 | 55.10 | 60.97 | 58.95 | 50.09 | 36.74 | 25.99 | 17.84 | 37.58 | |||||||||||||
S.D. | 3.78 | 3.91 | 2.78 | 2.58 | 2.32 | 2.90 | 2.24 | 2.26 | 2.68 | 2.73 | 2.98 | 3.32 | 1.42 | |||||||||||||
SKEW | -0.67 | -0.12 | -0.52 | -0.10 | -0.06 | -0.29 | -0.98 | -0.72 | -0.08 | 0.23 | -0.44 | -0.31 | -0.07 | |||||||||||||
MAX | 22.52 | 27.93 | 32.23 | 40.70 | 50.35 | 60.50 | 65.42 | 63.97 | 56.20 | 44.10 | 31.90 | 25.29 | 40.17 | |||||||||||||
MIN | 7.55 | 10.04 | 20.13 | 29.59 | 39.93 | 48.90 | 54.23 | 51.53 | 43.63 | 31.19 | 18.43 | 9.57 | 34.85 | |||||||||||||
YRS | 38 | 39 | 41 | 46 | 47 | 48 | 47 | 49 | 49 | 47 | 40 | 39 | 32 |