YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.75 | 44.73 | 23.00 | 20.79 | 36.57 | h | ||||
1980 | 18.06 | 21.47 | 26.74 | b | 40.08 | 48.69 | e | 59.77 | b | 66.32 | a | 63.10 | 56.58 | 44.50 | 33.82 | b | 31.97 | 42.59 | ||||||||
1981 | 28.63 | 27.70 | a | 36.85 | 46.27 | 50.63 | 62.10 | 68.35 | 66.02 | 60.10 | a | 41.87 | 35.02 | 25.10 | a | 45.72 | ||||||||||
1982 | 22.88 | a | 23.52 | a | 34.38 | a | 39.14 | b | 49.21 | c | 58.75 | 65.87 | a | 66.73 | 54.57 | 38.98 | b | 24.50 | c | 16.29 | c | 41.23 | ||||
1983 | 22.64 | c | 23.09 | a | 32.28 | b | 36.57 | b | 46.12 | a | 60.07 | c | 74.24 | b | 65.02 | j | 54.97 | a | 40.94 | 25.86 | a | 11.04 | h | 41.68 | b | |
1984 | 3.21 | 7.88 | c | 23.63 | 39.94 | e | 51.13 | d | 55.93 | h | 63.64 | b | 62.95 | 56.38 | d | 39.56 | 31.24 | a | 17.98 | b | 36.14 | a | ||||
1985 | 9.90 | b | 13.17 | b | 30.02 | b | 44.88 | b | 51.27 | c | 59.95 | 67.63 | 63.97 | a | 50.05 | a | 40.57 | d | 27.02 | 14.02 | b | 39.37 | ||||
1986 | 17.12 | c | 25.13 | a | 35.31 | 39.52 | b | 45.90 | b | 58.52 | b | ----- | z | ----- | z | 54.21 | f | 43.89 | c | 27.47 | a | 26.72 | b | 35.51 | c | |
1987 | 20.73 | a | 30.65 | b | 31.55 | a | 45.97 | 54.38 | a | 59.61 | c | 66.05 | a | 63.56 | 55.87 | 46.02 | a | 31.48 | 19.68 | a | 43.80 | |||||
1988 | 14.11 | 20.36 | 30.24 | 45.17 | 52.10 | 65.02 | 66.35 | 65.89 | 54.18 | 49.10 | 31.63 | 18.82 | 42.75 | |||||||||||||
1989 | 16.90 | 11.93 | 35.94 | 46.75 | 52.32 | 59.05 | 69.29 | 64.10 | b | 56.08 | 48.43 | c | 34.25 | 19.76 | 42.90 | |||||||||||
1990 | 24.37 | a | 20.88 | 36.27 | 46.33 | 50.93 | a | 62.75 | 66.63 | 65.26 | 61.28 | 45.61 | 32.95 | a | 12.54 | d | 43.82 | |||||||||
1991 | 10.68 | c | 21.02 | 34.06 | 41.70 | 51.72 | a | 61.03 | 65.76 | 65.26 | 55.88 | 44.74 | 27.91 | a | 15.02 | b | 41.23 | |||||||||
1992 | 12.11 | 25.90 | 38.32 | 47.88 | a | 55.60 | 60.20 | 63.45 | 63.98 | e | 56.12 | 47.69 | b | 25.62 | a | 17.05 | a | 42.83 | ||||||||
1993 | 18.24 | 13.84 | c | 31.79 | 40.28 | a | 52.45 | 57.82 | 61.58 | 61.58 | 54.17 | 43.62 | a | 24.38 | b | 18.27 | 39.83 | |||||||||
1994 | 22.48 | 20.89 | 36.95 | 44.40 | 55.95 | 63.15 | 66.23 | 66.63 | 57.07 | b | 44.08 | 27.27 | b | 23.34 | 44.04 | |||||||||||
1995 | 22.54 | d | 30.50 | 36.60 | 40.38 | a | 47.19 | 57.61 | b | 64.03 | 66.32 | 56.98 | 43.29 | c | 37.09 | a | 27.95 | b | 44.21 | |||||||
1996 | 18.20 | a | 25.55 | i | 34.22 | a | 42.05 | a | 52.27 | a | 61.33 | 67.38 | a | 65.81 | 53.75 | 41.78 | a | 32.61 | b | 24.65 | a | 44.91 | a | |||
1997 | 20.64 | c | 21.64 | 35.21 | ----- | z | 52.19 | 61.24 | a | 65.02 | 65.42 | 58.27 | 44.40 | 29.10 | 18.81 | 42.90 | a | |||||||||
1998 | 26.74 | d | 27.61 | 30.02 | 41.93 | a | 51.90 | 55.63 | 67.87 | 65.22 | a | 60.97 | 45.37 | 35.05 | 23.06 | d | 44.28 | |||||||||
1999 | 24.95 | c | 25.20 | 37.02 | a | 41.23 | 48.76 | 59.45 | 68.37 | 65.92 | 53.28 | 44.87 | 36.50 | a | 21.37 | 43.91 | ||||||||||
2000 | 26.00 | 32.12 | 35.84 | 46.62 | a | 54.65 | a | 60.72 | 68.29 | 67.90 | 55.57 | 43.81 | 17.91 | a | 17.47 | o | 46.31 | a | ||||||||
2001 | 10.87 | e | 21.83 | a | 33.45 | a | 44.53 | 52.79 | 60.83 | a | 70.71 | n | 64.09 | n | 58.71 | a | 45.85 | 34.23 | b | 16.61 | 37.97 | b | ||||
2002 | 17.58 | a | 18.46 | ----- | z | 45.16 | b | 52.08 | 63.77 | 70.79 | 64.65 | 56.53 | 41.20 | a | 29.75 | 24.43 | a | 44.04 | a | |||||||
2003 | 23.66 | 23.96 | a | 35.20 | a | 43.88 | 52.74 | 59.18 | b | 71.68 | 68.56 | 56.23 | f | 48.81 | 27.22 | 25.92 | 43.71 | a | ||||||||
2004 | 18.18 | 22.20 | b | 39.52 | b | 45.25 | 53.23 | 59.88 | a | 65.80 | a | 62.58 | 55.58 | 45.58 | 31.91 | a | 25.37 | a | 43.76 | |||||||
2005 | 28.40 | a | 31.39 | s | 35.64 | c | 43.47 | 50.80 | a | 58.03 | 67.95 | b | 64.21 | 56.45 | 46.53 | 33.90 | a | 21.02 | a | 46.04 | a | |||||
2006 | 24.77 | 22.68 | 33.02 | 45.43 | a | 53.08 | f | 63.36 | e | 70.10 | 65.29 | 51.98 | a | 42.07 | a | 33.78 | a | 19.18 | 42.88 | a | ||||||
2007 | 6.52 | b | 25.57 | a | 38.89 | 44.92 | 53.16 | 63.02 | 71.40 | 68.02 | 57.10 | 44.97 | 35.21 | a | 16.35 | 43.76 | ||||||||||
2008 | 11.65 | a | 20.80 | a | 27.56 | 38.37 | 48.89 | 58.03 | a | 67.65 | 65.08 | 54.29 | a | 44.05 | 36.28 | a | 22.15 | a | 41.23 | |||||||
2009 | 20.47 | 26.98 | 33.80 | a | ----- | z | 53.38 | a | 57.95 | a | 64.98 | 62.84 | 57.34 | a | 39.58 | a | 28.66 | a | 11.77 | a | 41.61 | a | ||||
2010 | 16.00 | a | 17.84 | 33.11 | 41.70 | 47.31 | 60.22 | 67.08 | 64.69 | 57.47 | 47.56 | 29.00 | b | 24.38 | a | 42.20 | ||||||||||
2011 | 16.15 | a | 17.69 | a | 32.84 | c | 40.59 | b | 47.56 | 59.62 | 67.03 | 66.55 | a | 56.93 | 44.90 | 30.03 | 18.77 | 41.56 | ||||||||
2012 | 24.30 | a | 25.27 | a | 39.65 | 46.65 | 53.58 | 64.67 | 69.94 | 67.48 | 58.35 | 44.15 | 36.20 | 22.50 | a | 46.06 | ||||||||||
2013 | 12.60 | 21.41 | 34.70 | a | 39.12 | 52.21 | 63.03 | 69.32 | a | 67.85 | a | 59.77 | 41.55 | 31.23 | 17.58 | 42.53 | ||||||||||
2014 | 23.10 | 28.88 | 37.37 | e | ----- | z | 60.50 | u | 60.87 | 68.71 | 63.97 | 57.93 | 47.37 | 30.08 | 25.03 | 44.33 | b | |||||||||
2015 | 25.69 | 33.00 | 43.58 | r | 43.65 | 50.14 | c | 64.72 | 65.29 | l | ----- | z | ----- | z | 49.21 | b | 31.40 | 18.39 | 39.52 | d | ||||||
2016 | 16.27 | 24.48 | 34.65 | 43.25 | 49.55 | 64.07 | 68.23 | t | 63.56 | 56.48 | ----- | z | ----- | z | 21.45 | 41.53 | c | |||||||||
2017 | ----- | z | 30.27 | h | 40.63 | 42.33 | ----- | z | ----- | z | ----- | z | ----- | z | 48.25 | r | 41.87 | 37.55 | 26.95 | 37.87 | g | |||||
2018 | 25.90 | 25.29 | g | 36.81 | 44.70 | 55.40 | 63.93 | 69.77 | 65.90 | 59.78 | a | 42.81 | 29.50 | 20.84 | 46.85 | a | ||||||||||
2019 | 18.45 | 21.36 | 28.23 | 44.25 | 47.56 | 59.48 | 68.15 | 66.26 | 59.13 | 30.67 | j | 31.15 | 20.65 | 42.24 | a | |||||||||||
2020 | 19.45 | 14.80 | a | 34.27 | 40.48 | 52.68 | 59.97 | a | 66.89 | 67.81 | 54.57 | a | 41.94 | 32.77 | 18.92 | 42.04 | ||||||||||
2021 | 17.52 | 20.75 | 33.45 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.26 | f | 37.00 | 27.29 | j | 27.18 | h | ||||
2022 | 17.03 | ----- | z | 29.83 | a | 40.29 | a | 48.61 | 61.52 | h | 69.16 | ----- | z | 59.72 | 45.32 | c | 29.05 | s | 18.39 | 41.04 | d | |||||
2023 | 18.48 | 13.91 | 19.36 | j | 35.97 | 54.63 | l | 57.39 | g | 65.93 | d | ----- | z | ----- | z | 42.35 | 29.44 | d | 22.11 | 32.60 | e | |||||
2024 | 21.62 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.62 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.00 | 22.22 | 34.04 | 42.78 | 51.21 | 60.73 | 67.49 | 65.30 | 56.62 | 44.18 | 30.88 | 20.76 | 42.85 | |||||||||||||
S.D. | 5.80 | 5.62 | 3.66 | 2.98 | 2.61 | 2.30 | 2.50 | 1.72 | 2.41 | 2.64 | 4.28 | 4.28 | 1.66 | |||||||||||||
SKEW | -0.56 | -0.34 | -0.66 | -0.35 | -0.27 | 0.19 | 0.20 | -0.04 | -0.29 | 0.06 | -0.64 | 0.19 | -0.18 | |||||||||||||
MAX | 28.63 | 33.00 | 40.63 | 47.88 | 55.95 | 65.02 | 74.24 | 68.56 | 61.28 | 49.21 | 37.55 | 31.97 | 46.06 | |||||||||||||
MIN | 3.21 | 7.88 | 23.63 | 35.97 | 45.90 | 55.63 | 61.58 | 61.58 | 50.05 | 38.98 | 17.91 | 11.77 | 39.37 | |||||||||||||
YRS | 44 | 39 | 41 | 40 | 39 | 39 | 38 | 36 | 39 | 42 | 43 | 42 | 23 |