YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.85 | 38.80 | 24.71 | 37.12 | i | |||
1981 | 25.58 | 27.81 | a | 38.03 | 53.42 | 56.10 | 68.82 | 75.13 | 72.24 | 64.52 | 48.65 | 40.25 | 21.40 | 49.33 | ||||||||||||
1982 | 4.57 | d | 20.82 | 33.04 | c | 43.83 | 59.18 | 63.03 | a | 74.94 | 74.10 | a | 61.20 | 47.71 | 30.41 | b | ----- | z | 46.62 | a | ||||||
1983 | 26.95 | 31.48 | 32.88 | b | 41.62 | 54.02 | a | 65.32 | 76.18 | 77.63 | a | 62.50 | 49.50 | 34.18 | 4.19 | d | 46.37 | |||||||||
1984 | 20.28 | a | 31.21 | c | 28.97 | 44.08 | 54.69 | 68.12 | a | 73.44 | 75.17 | b | 57.68 | 48.71 | 35.91 | b | 18.37 | a | 46.39 | |||||||
1985 | 11.93 | c | 17.83 | a | 35.90 | 50.58 | 63.32 | a | 62.29 | b | 74.68 | 68.30 | d | 59.53 | 47.53 | b | 20.45 | 13.65 | d | 43.83 | ||||||
1986 | 22.45 | a | 17.28 | a | 39.50 | c | 44.89 | c | 57.62 | b | 69.91 | a | 74.61 | d | 70.32 | i | 60.14 | e | 50.41 | b | 29.97 | 28.73 | 45.05 | a | ||
1987 | 26.15 | a | 33.38 | 33.82 | a | 51.43 | a | 63.10 | a | 71.09 | c | 77.33 | a | 69.92 | a | 62.68 | 46.45 | a | 38.55 | 26.15 | a | 50.00 | ||||
1988 | 11.05 | a | 18.34 | 34.85 | a | 45.63 | 61.19 | 75.73 | b | 75.47 | a | 75.32 | c | 63.14 | a | 47.28 | a | 36.48 | 25.29 | 47.48 | ||||||
1989 | 26.19 | 11.15 | a | 26.60 | b | 48.47 | 57.18 | a | 65.52 | 76.80 | d | 73.83 | a | 62.63 | 51.65 | 33.57 | 13.55 | 45.59 | ||||||||
1990 | 30.17 | a | 27.00 | 37.07 | a | 46.20 | 55.26 | 68.87 | 72.05 | a | 73.15 | a | 67.97 | 48.98 | 38.73 | 15.50 | b | 48.41 | ||||||||
1991 | 15.94 | 31.00 | 36.17 | a | 48.74 | a | 59.29 | 71.48 | 75.19 | 75.76 | 63.22 | a | 47.42 | 28.25 | b | 28.78 | a | 48.44 | ||||||||
1992 | 29.37 | 32.50 | 38.87 | 44.36 | a | 59.92 | 64.52 | 65.42 | 66.06 | 61.45 | 49.70 | a | 30.65 | 20.76 | 46.97 | |||||||||||
1993 | 15.30 | a | 15.32 | 33.66 | b | 44.15 | 56.35 | 63.05 | 68.66 | 70.25 | a | 56.98 | 47.85 | 29.43 | 25.85 | 43.91 | ||||||||||
1994 | 10.94 | 13.75 | 37.95 | 46.00 | 61.08 | 68.10 | 69.56 | 70.02 | 64.11 | b | 51.81 | 36.15 | 23.94 | 46.12 | ||||||||||||
1995 | 19.72 | a | 28.41 | 32.16 | 39.16 | a | 53.48 | 67.55 | 74.39 | 75.34 | 61.43 | 47.78 | b | 29.78 | 24.15 | 46.11 | ||||||||||
1996 | 12.97 | a | 23.67 | 25.03 | a | 42.50 | a | 53.15 | a | 68.76 | a | 71.24 | 72.55 | 61.34 | a | 48.98 | a | 24.18 | 12.80 | a | 43.10 | |||||
1997 | 11.18 | a | 24.31 | a | 34.55 | b | 41.16 | b | 53.98 | 69.25 | b | 73.25 | a | 70.81 | 64.82 | 51.79 | 32.88 | a | 30.24 | b | 46.52 | |||||
1998 | 20.05 | 33.98 | 26.20 | a | 47.33 | 60.48 | 63.05 | a | 75.13 | a | 73.87 | a | 70.30 | 50.29 | 38.31 | a | 28.11 | 48.93 | ||||||||
1999 | 18.65 | 33.85 | a | 36.56 | 45.65 | 57.11 | 66.63 | 74.47 | a | 72.67 | b | 59.57 | 49.76 | b | 44.26 | a | 30.66 | 49.15 | ||||||||
2000 | 24.30 | a | 31.78 | 41.24 | 46.48 | 59.48 | a | 65.85 | 75.07 | a | 75.58 | a | 65.13 | 52.45 | 24.63 | 11.31 | b | 47.78 | ||||||||
2001 | 21.89 | 13.71 | 28.02 | a | 46.65 | 59.74 | 67.58 | 76.61 | 75.23 | a | 64.37 | 49.80 | a | 43.60 | 26.61 | 47.82 | ||||||||||
2002 | 25.89 | 31.70 | 24.07 | c | 45.97 | a | 53.31 | 72.64 | a | 80.02 | a | 73.03 | 65.17 | 41.84 | 35.03 | 28.55 | 48.10 | |||||||||
2003 | 19.39 | 21.69 | b | 33.40 | b | 48.65 | 56.28 | a | 65.82 | 75.60 | 76.94 | 63.50 | 54.68 | 30.90 | 28.60 | a | 47.95 | |||||||||
2004 | 18.36 | b | 23.26 | 40.40 | 49.95 | a | 58.07 | b | 64.89 | c | 73.78 | b | 68.95 | b | 68.58 | d | 50.96 | d | 40.88 | d | 28.29 | 48.86 | ||||
2005 | 17.53 | a | 31.16 | c | 35.60 | a | 49.31 | a | 55.02 | a | 70.17 | a | 75.96 | c | 74.93 | c | 69.32 | b | 51.63 | 37.71 | b | 18.17 | b | 48.88 | ||
2006 | 35.32 | 24.62 | 33.34 | b | 51.27 | 60.40 | 71.48 | a | 81.26 | b | 74.69 | d | 59.07 | a | 47.02 | a | 35.57 | 26.92 | 50.08 | |||||||
2007 | 20.32 | 15.02 | b | 40.92 | a | 43.84 | a | 63.03 | a | 69.62 | a | 77.74 | 72.82 | 65.08 | 51.52 | c | 37.27 | 21.40 | 48.22 | |||||||
2008 | 18.39 | 19.52 | 33.56 | 37.57 | p | 53.69 | 65.40 | 74.39 | 73.66 | 62.78 | 48.56 | 35.48 | 15.50 | 45.54 | a | |||||||||||
2009 | 16.97 | 26.09 | 31.68 | 42.80 | 56.97 | 65.63 | ----- | z | 69.03 | 64.18 | 42.07 | a | 41.37 | 14.82 | 42.87 | a | ||||||||||
2010 | 15.56 | 13.84 | 35.94 | 50.88 | 55.90 | 67.80 | 75.31 | 75.73 | 59.95 | 53.76 | 33.82 | 17.60 | 46.34 | |||||||||||||
2011 | 11.50 | 17.66 | 28.29 | 44.37 | 54.74 | 66.33 | 78.32 | 72.87 | 61.12 | 53.84 | 36.22 | 28.47 | 46.14 | |||||||||||||
2012 | 25.15 | 27.24 | 48.27 | 51.58 | 59.34 | 72.33 | 81.02 | 73.08 | 64.57 | 47.11 | 36.33 | 21.90 | 50.66 | |||||||||||||
2013 | 19.90 | 23.11 | 27.89 | 37.25 | 57.18 | 67.07 | 73.00 | 73.06 | 68.37 | 47.08 | 33.82 | 15.60 | 45.28 | |||||||||||||
2014 | 20.11 | 15.61 | 30.05 | 45.47 | 56.71 | 66.58 | 71.92 | 70.45 | 61.32 | 52.35 | 27.37 | 23.44 | 45.11 | |||||||||||||
2015 | 23.44 | 19.11 | 39.34 | 50.22 | 55.37 | 69.13 | 74.31 | 71.24 | 67.62 | 53.15 | 38.95 | 25.26 | 48.93 | |||||||||||||
2016 | 18.89 | 31.90 | 39.69 | 47.20 | 58.63 | 72.75 | 74.48 | a | 73.58 | 64.32 | 53.89 | 44.30 | 18.08 | 49.81 | ||||||||||||
2017 | 19.31 | 31.38 | 35.94 | 46.92 | 57.42 | 70.57 | 78.66 | 68.76 | 63.72 | 50.32 | a | 36.08 | 23.11 | 48.51 | ||||||||||||
2018 | 17.05 | 13.41 | 32.13 | 31.12 | 63.00 | 67.62 | 73.98 | 71.71 | 63.73 | 45.15 | 29.85 | 26.15 | 44.57 | |||||||||||||
2019 | 17.76 | 7.66 | 25.87 | 46.93 | 52.65 | 68.82 | 74.61 | 68.92 | 65.82 | 41.90 | 33.07 | 23.53 | 43.96 | |||||||||||||
2020 | 20.21 | 25.31 | 37.92 | 43.88 | 54.84 | 72.62 | 74.40 | 73.73 | 62.48 | 43.53 | 40.78 | 28.75 | a | 48.20 | ||||||||||||
2021 | 26.63 | 14.50 | 40.58 | 44.90 | 57.18 | 73.72 | 75.42 | 74.85 | 67.00 | 52.11 | 38.98 | 26.77 | 49.39 | |||||||||||||
2022 | 19.69 | 21.18 | 34.18 | 42.00 | 57.42 | 68.77 | 75.61 | 73.97 | 66.73 | 50.97 | 31.60 | 16.18 | 46.52 | |||||||||||||
2023 | 19.71 | 19.93 | 25.35 | 44.10 | 62.40 | 71.90 | 71.68 | 72.77 | 66.60 | 50.23 | 38.90 | 32.13 | 47.98 | |||||||||||||
2024 | 15.23 | 33.17 | 35.98 | 46.70 | 50.61 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.77 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.73 | 23.33 | 34.12 | 45.76 | 57.56 | 68.28 | 74.79 | 72.78 | 63.62 | 49.23 | 34.86 | 22.42 | 47.33 | |||||||||||||
S.D. | 5.92 | 7.38 | 5.25 | 4.13 | 3.01 | 3.15 | 2.98 | 2.58 | 3.09 | 3.16 | 5.36 | 6.31 | 1.93 | |||||||||||||
SKEW | 0.08 | -0.15 | 0.00 | -0.97 | 0.32 | 0.14 | -0.47 | -0.51 | 0.06 | -0.60 | -0.48 | -0.71 | -0.42 | |||||||||||||
MAX | 35.32 | 33.98 | 48.27 | 53.42 | 63.32 | 75.73 | 81.26 | 77.63 | 70.30 | 54.68 | 44.30 | 32.13 | 50.66 | |||||||||||||
MIN | 4.57 | 7.66 | 24.07 | 31.12 | 52.65 | 62.29 | 65.42 | 66.06 | 56.98 | 41.84 | 20.45 | 4.19 | 43.10 | |||||||||||||
YRS | 44 | 44 | 44 | 43 | 43 | 43 | 42 | 42 | 43 | 44 | 44 | 43 | 39 |