YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | 56.27 | ----- | z | 71.27 | 73.35 | 59.30 | 54.26 | 33.68 | 16.35 | 52.07 | e | |||||||
1974 | 12.08 | 20.73 | 31.90 | 48.60 | 54.97 | 66.28 | 76.10 | 66.71 | 57.93 | 51.19 | 33.30 | 23.56 | 45.28 | |||||||||||||
1975 | 15.53 | 14.04 | a | 23.84 | 38.08 | 60.27 | 66.90 | 75.00 | 71.35 | 57.70 | 51.89 | 34.47 | 19.19 | 44.02 | ||||||||||||
1976 | 12.45 | 27.72 | 32.60 | 51.18 | 57.08 | 69.60 | a | 74.50 | 72.92 | 62.00 | a | 43.47 | 27.23 | 15.27 | 45.50 | |||||||||||
1977 | 3.15 | 24.73 | 35.45 | 52.38 | 66.05 | 69.37 | 73.76 | 65.35 | 61.76 | a | 48.21 | 30.79 | a | 15.02 | 45.50 | |||||||||||
1978 | 3.66 | 9.32 | 30.55 | 44.25 | 59.35 | 68.17 | 70.85 | 70.55 | 66.77 | 49.90 | 30.78 | 14.35 | 43.21 | |||||||||||||
1979 | 0.60 | 6.38 | 25.89 | 41.17 | 54.05 | a | 67.27 | 71.44 | 68.00 | 62.85 | 47.73 | 30.52 | 26.43 | a | 41.86 | |||||||||||
1980 | ----- | z | 16.05 | 27.88 | a | 48.37 | 60.15 | 69.43 | 73.97 | 70.31 | 63.32 | 46.39 | 37.17 | 19.69 | 48.43 | a | ||||||||||
1981 | 20.58 | 24.23 | 37.89 | 52.42 | 57.65 | 68.55 | 72.50 | 69.02 | a | 61.25 | 47.03 | 37.80 | 15.82 | 47.06 | ||||||||||||
1982 | 1.11 | 17.27 | 30.16 | 42.80 | 60.13 | 63.55 | 73.56 | 70.50 | d | 60.67 | 49.27 | a | 29.07 | a | 24.37 | 43.54 | ||||||||||
1983 | 18.40 | a | 24.70 | 30.78 | a | 40.25 | 55.00 | a | 66.65 | 76.43 | a | 76.56 | 63.97 | a | 49.00 | 32.42 | 0.82 | 44.58 | ||||||||
1984 | 14.24 | 27.29 | 22.35 | 44.68 | 57.02 | 68.40 | a | 71.79 | 73.42 | 57.15 | 49.82 | 35.53 | 18.45 | 45.01 | ||||||||||||
1985 | 11.73 | 17.80 | 36.78 | a | 52.18 | 63.21 | c | 65.23 | 71.23 | 66.32 | 58.78 | 47.29 | 21.43 | 8.61 | 43.38 | |||||||||||
1986 | 20.83 | a | 15.16 | 35.44 | 47.90 | 59.47 | a | 70.08 | 73.68 | a | 67.00 | 60.02 | a | 49.68 | 27.62 | 25.00 | b | 45.99 | ||||||||
1987 | 23.38 | a | 32.71 | 36.98 | 53.05 | a | 66.10 | a | 71.38 | 74.60 | 68.07 | a | 61.82 | 44.61 | 38.03 | 23.47 | 49.52 | |||||||||
1988 | 8.11 | 11.86 | 34.29 | 46.55 | 65.57 | a | 74.57 | 75.34 | 73.05 | 63.68 | 45.10 | 32.00 | a | 22.24 | b | 46.03 | ||||||||||
1989 | 24.29 | 9.96 | a | 26.05 | b | 46.27 | 58.48 | a | 67.66 | a | 74.16 | 70.44 | 60.12 | b | 50.74 | j | 28.52 | 10.76 | 43.34 | a | ||||||
1990 | 28.40 | 23.61 | a | 34.81 | 46.70 | 55.98 | 69.55 | a | 70.24 | h | 70.46 | g | 65.28 | 48.06 | 35.78 | 14.63 | 42.28 | b | ||||||||
1991 | 12.03 | a | 27.79 | 34.85 | 48.93 | 61.45 | a | 71.98 | 71.35 | 70.05 | a | 58.09 | a | 45.10 | 23.67 | a | 23.58 | a | 45.74 | |||||||
1992 | 23.50 | 26.09 | a | 33.76 | 39.43 | b | 58.29 | 64.22 | e | 63.45 | a | 63.13 | a | 57.47 | 46.75 | a | 28.90 | 16.68 | 43.47 | |||||||
1993 | 11.88 | c | 13.23 | b | 24.97 | 40.36 | b | 53.44 | 61.16 | b | 69.02 | a | 69.15 | a | 54.00 | b | 45.55 | 26.71 | a | 18.29 | 40.64 | |||||
1994 | 3.92 | e | 11.12 | c | 33.55 | a | 42.82 | 59.61 | 67.53 | a | 67.12 | a | 65.32 | 62.15 | 49.73 | c | 35.53 | a | 21.89 | 43.36 | ||||||
1995 | 15.46 | d | 18.62 | c | 32.07 | b | 38.97 | 52.18 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.28 | h | |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.94 | 67.95 | 57.90 | 48.22 | a | 21.96 | d | 10.80 | a | 45.79 | f | |||
1997 | 6.36 | c | 16.91 | 26.33 | a | 40.18 | 51.94 | 69.16 | a | 72.31 | b | 67.13 | a | 61.93 | a | 49.26 | 26.97 | 24.97 | 42.79 | |||||||
1998 | 16.66 | 30.59 | 26.74 | 46.47 | 63.18 | a | 64.08 | 71.02 | 70.26 | 64.04 | d | 50.37 | 33.97 | 24.39 | 46.81 | |||||||||||
1999 | 11.19 | 27.05 | 32.48 | 44.71 | a | 58.95 | a | 66.57 | 74.93 | d | 69.05 | 59.20 | 47.10 | a | 41.84 | a | 24.13 | 46.43 | ||||||||
2000 | 15.30 | a | 27.66 | 38.79 | 44.24 | a | 60.14 | b | 65.52 | 70.92 | a | 70.21 | b | 59.40 | a | 50.33 | a | 25.57 | a | 5.26 | 44.44 | |||||
2001 | 17.29 | 9.33 | b | 23.47 | a | 45.32 | 57.60 | b | 67.05 | b | 73.52 | 70.48 | 59.57 | a | 46.97 | b | 44.32 | 24.67 | a | 44.96 | ||||||
2002 | 22.90 | a | 26.86 | c | 20.22 | d | 44.00 | b | 53.59 | d | ----- | z | 75.61 | 69.00 | 61.72 | a | 40.11 | 32.08 | 25.45 | 42.87 | a | |||||
2003 | 15.06 | 14.81 | a | 29.47 | a | 45.21 | a | 55.48 | 65.77 | 70.88 | f | 71.55 | 59.20 | 49.84 | 29.33 | 23.15 | 41.72 | a | ||||||||
2004 | 10.89 | c | 16.75 | a | 35.05 | a | 46.85 | 54.95 | 63.50 | a | 69.19 | b | 64.61 | 65.27 | 49.34 | 37.26 | a | 23.15 | 44.73 | |||||||
2005 | 14.36 | c | 26.85 | a | 29.89 | 50.05 | a | 55.73 | a | 70.67 | 73.50 | b | 68.90 | b | 65.38 | b | 48.50 | f | 36.27 | 16.35 | 46.18 | a | ||||
2006 | 27.05 | b | 18.54 | 30.98 | b | 49.36 | b | 58.76 | 67.70 | c | 74.76 | 70.00 | 56.95 | 45.06 | 34.55 | 26.37 | 46.67 | |||||||||
2007 | 17.32 | 10.95 | 35.31 | 42.38 | 62.24 | 69.72 | 73.54 | d | 69.31 | d | 62.77 | 53.08 | a | 33.25 | 15.39 | 45.44 | ||||||||||
2008 | 11.16 | 12.82 | a | 26.44 | 40.78 | 55.00 | a | 66.15 | 72.02 | 69.40 | b | 61.31 | a | 47.61 | 32.65 | 10.79 | b | 42.18 | ||||||||
2009 | 8.27 | 21.11 | i | 29.28 | a | 42.73 | 53.65 | k | 65.42 | 66.91 | b | 66.28 | b | 62.33 | 40.21 | 40.03 | a | 13.71 | 43.52 | b | ||||||
2010 | 7.57 | a | 12.94 | a | 35.03 | 52.36 | a | 56.33 | b | 67.78 | a | 72.55 | a | 73.55 | b | 58.43 | b | 51.07 | a | 32.98 | 12.13 | 44.39 | ||||
2011 | 7.39 | 14.44 | b | 25.27 | 42.62 | 55.33 | b | 65.84 | e | 75.62 | e | 69.48 | b | 58.71 | a | 52.31 | 35.12 | a | 25.23 | a | 43.95 | |||||
2012 | 22.03 | 24.57 | 45.12 | a | 49.80 | 61.67 | a | 69.98 | c | 78.00 | 69.18 | 60.23 | 44.98 | b | 34.53 | 19.92 | a | 48.33 | ||||||||
2013 | 15.82 | 17.12 | 24.79 | 35.98 | a | 54.76 | 66.64 | a | 71.62 | b | 69.80 | a | 65.34 | a | 46.62 | a | 29.52 | 10.19 | 42.35 | |||||||
2014 | 8.03 | a | 8.59 | 24.30 | a | 42.95 | 55.25 | e | 67.67 | c | 68.18 | 68.71 | 60.58 | 48.85 | 23.88 | 21.74 | 41.56 | |||||||||
2015 | 17.98 | 11.77 | 34.37 | 47.40 | 56.82 | 67.73 | 71.07 | a | 67.20 | a | 65.87 | 50.45 | a | 37.46 | b | 25.08 | a | 46.10 | ||||||||
2016 | 14.02 | a | 23.20 | a | 37.45 | a | 47.52 | c | 58.10 | a | 70.61 | b | 70.95 | b | 69.53 | a | 61.78 | 48.58 | 39.98 | 15.31 | 46.42 | |||||
2017 | 16.84 | 27.39 | 28.42 | a | 43.18 | 54.03 | 67.68 | e | 70.73 | 64.53 | 63.57 | 47.13 | 30.32 | 18.06 | 44.32 | |||||||||||
2018 | 8.98 | e | 9.96 | b | 26.65 | 30.78 | 62.89 | 69.77 | 70.42 | 68.35 | 61.83 | 42.42 | 25.08 | 20.24 | 41.45 | |||||||||||
2019 | 9.89 | 4.07 | 23.26 | 42.73 | 51.40 | 66.80 | 71.60 | 67.44 | f | 61.28 | 40.97 | 27.20 | 19.35 | 38.05 | a | |||||||||||
2020 | 15.02 | 16.97 | 32.95 | b | 40.17 | 52.60 | 69.40 | 72.22 | f | 70.21 | 58.70 | 39.06 | 36.75 | 24.03 | 41.44 | a | ||||||||||
2021 | 20.40 | 7.70 | 36.73 | 42.08 | 54.44 | 71.35 | 71.66 | 69.31 | j | 63.43 | 51.26 | 35.12 | 21.84 | 43.27 | a | |||||||||||
2022 | 11.44 | 13.32 | 29.47 | 37.42 | 56.16 | 69.70 | 73.18 | 68.13 | 63.63 | 49.34 | 32.65 | 14.00 | 43.20 | |||||||||||||
2023 | 16.90 | 16.36 | 21.45 | 40.92 | 60.69 | 70.58 | 68.48 | 70.50 | f | 64.95 | 49.55 | 35.50 | 29.94 | 43.21 | a | |||||||||||
2024 | 14.69 | 31.26 | 31.03 | 42.78 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.66 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.00 | 18.35 | 30.67 | 44.60 | 57.87 | 67.88 | 72.16 | 69.20 | 61.23 | 47.71 | 32.34 | 18.80 | 44.60 | |||||||||||||
S.D. | 6.52 | 7.47 | 5.29 | 4.78 | 3.65 | 2.53 | 2.83 | 2.63 | 2.78 | 3.38 | 5.10 | 6.11 | 1.95 | |||||||||||||
SKEW | 0.04 | 0.14 | 0.11 | -0.25 | 0.49 | -0.11 | -0.60 | 0.17 | -0.12 | -0.73 | -0.11 | -0.68 | 0.17 | |||||||||||||
MAX | 28.40 | 32.71 | 45.12 | 53.05 | 66.10 | 74.57 | 78.00 | 76.56 | 66.77 | 54.26 | 44.32 | 29.94 | 49.52 | |||||||||||||
MIN | 0.60 | 4.07 | 20.22 | 30.78 | 51.40 | 61.16 | 63.45 | 63.13 | 54.00 | 39.06 | 21.43 | 0.82 | 40.64 | |||||||||||||
YRS | 49 | 49 | 50 | 49 | 48 | 47 | 47 | 46 | 50 | 48 | 50 | 50 | 37 |