YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.52 | 16.58 | 24.55 | j | ||
1972 | 7.84 | 11.28 | 28.56 | 40.95 | 59.37 | 66.12 | 69.24 | 68.65 | 57.75 | 43.68 | 31.37 | 13.07 | a | 41.49 | ||||||||||||
1973 | 16.47 | a | 19.98 | 37.42 | 44.25 | 55.27 | 68.77 | 71.03 | 72.15 | 58.95 | 53.23 | ----- | z | 15.44 | 46.63 | a | ||||||||||
1974 | 11.89 | 19.96 | 31.23 | 45.58 | 53.69 | 65.60 | 76.02 | 65.89 | 55.95 | 48.34 | 33.29 | a | 22.32 | 44.15 | ||||||||||||
1975 | 14.73 | 13.55 | 21.82 | 38.33 | 60.47 | a | 65.88 | 74.10 | 69.87 | 55.32 | 49.56 | 34.40 | 19.50 | 43.13 | ||||||||||||
1976 | 12.29 | 26.40 | 29.66 | 47.98 | 54.15 | a | 67.71 | b | 72.69 | b | 70.57 | a | 59.62 | 41.94 | 26.77 | 13.71 | 43.62 | |||||||||
1977 | 2.21 | 23.69 | a | 35.02 | 51.25 | 65.40 | 68.77 | 71.84 | 63.56 | 59.25 | 45.60 | 30.62 | 14.74 | 44.33 | ||||||||||||
1978 | 2.50 | 8.80 | 27.76 | 44.23 | 58.06 | 67.50 | a | 70.52 | a | 68.50 | 64.09 | a | 47.69 | 29.55 | 13.35 | 41.88 | ||||||||||
1979 | -0.98 | 3.84 | 23.68 | a | 39.62 | 52.50 | 64.62 | 69.44 | 64.56 | 60.62 | 46.60 | 30.35 | 24.65 | 39.96 | ||||||||||||
1980 | 15.94 | 15.00 | 26.35 | 47.00 | 59.05 | 67.22 | 72.29 | 68.68 | 60.12 | 44.06 | 36.48 | 18.39 | 44.21 | |||||||||||||
1981 | 18.73 | a | 23.48 | 36.35 | 49.57 | 55.82 | a | 67.00 | 70.84 | 67.29 | 59.42 | 45.40 | 37.05 | 16.00 | 45.58 | |||||||||||
1982 | 2.24 | b | 15.13 | a | 28.80 | c | 41.33 | a | 58.61 | 61.26 | a | 72.26 | 68.03 | 59.10 | 47.72 | a | 28.20 | 22.77 | a | 42.12 | ||||||
1983 | 16.98 | 23.56 | a | 28.05 | 37.98 | a | 52.40 | a | 65.35 | 75.94 | 74.79 | 60.82 | 47.20 | a | 32.36 | a | 0.18 | a | 42.97 | |||||||
1984 | 12.31 | 25.32 | a | 20.92 | a | 42.67 | a | 53.73 | a | 67.29 | a | 69.93 | b | 70.72 | d | 55.88 | a | 48.40 | 31.60 | a | 17.87 | a | 43.05 | |||
1985 | 9.10 | 15.67 | a | 37.15 | a | 49.63 | 61.08 | 62.55 | 69.11 | 63.16 | 57.52 | ----- | z | 20.07 | b | 6.84 | b | 41.08 | a | |||||||
1986 | 15.96 | d | 13.38 | b | 32.60 | b | 45.12 | b | 56.32 | 66.83 | a | 71.03 | 63.26 | 59.25 | 47.68 | 25.73 | d | 23.10 | 43.36 | |||||||
1987 | 20.31 | d | 30.66 | 32.77 | c | 50.42 | 63.37 | a | 70.92 | 73.42 | 66.18 | a | 59.12 | 41.92 | 35.78 | a | 22.71 | 47.30 | ||||||||
1988 | 7.55 | 9.79 | 33.02 | 43.47 | ----- | z | 72.21 | a | 72.79 | 71.41 | b | 60.33 | a | 43.19 | 32.15 | 19.48 | a | 42.31 | a | |||||||
1989 | 23.44 | 8.68 | 26.43 | a | 44.62 | 57.16 | 66.12 | a | 74.16 | 69.50 | 59.72 | 49.58 | 28.17 | 13.55 | 43.43 | |||||||||||
1990 | 25.88 | b | 21.62 | 32.98 | 45.08 | 54.37 | 69.03 | 69.77 | 69.10 | 64.00 | 46.50 | 34.30 | 14.71 | 45.61 | ||||||||||||
1991 | 9.68 | a | 29.39 | a | 32.32 | 47.91 | a | 60.06 | 71.78 | 71.10 | 69.27 | 59.75 | 45.63 | 22.97 | 21.73 | 45.13 | ||||||||||
1992 | 23.02 | 26.45 | 33.08 | 39.93 | 59.02 | a | 65.60 | 64.10 | 63.77 | 57.85 | 47.50 | 29.10 | 17.84 | 43.94 | ||||||||||||
1993 | 11.47 | b | 12.22 | a | 24.76 | 41.22 | 55.48 | 62.98 | 69.27 | 69.37 | 54.43 | 46.16 | 28.27 | 18.94 | 41.21 | |||||||||||
1994 | 3.44 | 9.32 | 33.98 | 44.35 | 60.71 | 69.25 | 67.84 | 66.26 | 62.68 | 50.63 | 35.95 | 22.23 | 43.89 | |||||||||||||
1995 | 15.76 | 20.09 | 30.57 | a | 39.20 | 53.89 | 68.82 | 71.77 | 72.50 | 57.43 | 46.39 | 25.63 | 20.83 | b | 43.57 | |||||||||||
1996 | 8.29 | 18.78 | ----- | z | 40.30 | 52.56 | 67.95 | 68.63 | 67.70 | a | 57.90 | a | 48.05 | 22.40 | a | 10.06 | 42.06 | a | ||||||||
1997 | 7.74 | 18.36 | 28.84 | 40.67 | a | 51.34 | 69.47 | a | 71.02 | a | 67.53 | 62.02 | 49.90 | 26.31 | a | 25.27 | 43.21 | |||||||||
1998 | 16.55 | 31.06 | a | 26.29 | 46.15 | 63.11 | 64.10 | 70.90 | 69.74 | 65.77 | 50.37 | 35.74 | a | 25.20 | a | 47.08 | ||||||||||
1999 | 10.50 | 27.31 | a | 32.50 | 45.84 | a | 58.27 | a | 66.71 | a | 74.63 | a | 68.77 | 59.68 | 47.10 | 42.03 | 24.29 | 46.47 | ||||||||
2000 | 15.98 | a | 27.12 | a | 38.75 | a | 44.20 | 59.53 | 65.60 | 70.98 | 70.03 | 60.18 | 50.50 | a | 27.03 | 5.40 | 44.61 | |||||||||
2001 | 17.97 | 9.79 | 24.89 | 46.88 | 59.24 | 68.48 | 74.31 | 70.79 | 59.33 | 47.93 | a | 45.27 | 26.74 | 45.97 | ||||||||||||
2002 | 22.97 | 26.73 | 21.68 | 43.42 | 52.63 | 70.36 | a | 74.85 | 68.48 | 62.03 | 40.02 | 31.35 | 24.74 | 44.94 | ||||||||||||
2003 | 13.98 | 14.59 | a | 29.87 | a | 46.12 | b | 55.37 | a | 65.93 | 71.13 | 70.90 | 59.03 | 50.15 | 30.10 | 23.78 | a | 44.25 | ||||||||
2004 | 12.85 | a | 16.21 | 36.27 | 46.79 | b | 54.93 | a | 64.16 | b | 69.42 | 64.06 | 64.48 | 49.48 | 36.80 | 22.98 | 44.87 | |||||||||
2005 | 13.60 | 26.55 | 29.00 | 49.77 | 55.27 | 70.88 | 73.10 | 68.79 | 64.69 | a | 50.21 | 36.08 | 16.13 | 46.17 | ||||||||||||
2006 | 27.52 | a | 18.73 | 29.82 | 50.10 | 58.84 | 69.12 | 74.92 | a | 69.63 | 56.90 | 45.55 | 34.70 | 26.52 | 46.86 | |||||||||||
2007 | 16.80 | a | 10.27 | 35.61 | 42.22 | 62.40 | 69.97 | 72.89 | 69.56 | 62.27 | 52.47 | 33.68 | 15.48 | 45.30 | ||||||||||||
2008 | 11.78 | b | 11.91 | 26.42 | 40.78 | 53.93 | a | 67.07 | 72.00 | 69.13 | 61.02 | 48.29 | 33.03 | 12.69 | 42.34 | |||||||||||
2009 | 9.06 | 20.20 | 29.90 | 42.58 | 57.20 | d | 65.06 | c | 66.73 | e | 66.23 | 62.73 | 40.84 | 40.37 | 13.45 | 42.86 | ||||||||||
2010 | 8.79 | 12.95 | 33.93 | d | 51.58 | 57.11 | 67.70 | 72.55 | 73.32 | 58.75 | 51.78 | a | 33.12 | 12.32 | 44.49 | |||||||||||
2011 | 7.81 | 15.59 | a | 26.18 | 42.45 | 55.26 | b | 66.53 | 76.65 | 69.61 | 58.50 | 51.98 | 35.00 | 24.73 | 44.19 | |||||||||||
2012 | 21.58 | 24.19 | 45.68 | 49.20 | 62.02 | 69.93 | 78.13 | 69.11 | 60.60 | 44.42 | 34.57 | 20.32 | 48.31 | |||||||||||||
2013 | 15.26 | 17.74 | a | 24.15 | 35.55 | 54.74 | 66.80 | 72.10 | 69.00 | 64.33 | 47.82 | 29.67 | 10.82 | 42.33 | ||||||||||||
2014 | 9.24 | 8.66 | 24.89 | 43.18 | 56.52 | 67.38 | 67.23 | 67.85 | 60.52 | 48.68 | 23.75 | 22.79 | 41.72 | |||||||||||||
2015 | 17.82 | 11.32 | 34.45 | 47.72 | 55.87 | 67.12 | 70.23 | 66.47 | 65.32 | 50.60 | 37.72 | 26.05 | 45.89 | |||||||||||||
2016 | 14.52 | 23.53 | 37.74 | 46.73 | 57.35 | 69.92 | 70.47 | 69.63 | 63.17 | 50.05 | 41.98 | 17.40 | 46.87 | |||||||||||||
2017 | 18.63 | 29.48 | 31.19 | 46.47 | 55.53 | 68.95 | 71.55 | 65.27 | 63.32 | 48.55 | 32.08 | 19.44 | 45.87 | |||||||||||||
2018 | 12.18 | 11.39 | 29.34 | 31.88 | 63.24 | 70.82 | 70.89 | 68.71 | 62.60 | 43.10 | 25.78 | 23.11 | 42.75 | |||||||||||||
2019 | 11.68 | 6.71 | 25.02 | 43.85 | 56.22 | o | 68.05 | b | 71.70 | a | 67.54 | d | 65.35 | 42.83 | a | 28.73 | d | 21.94 | 41.22 | a | ||||||
2020 | 18.32 | 18.89 | b | 35.48 | 43.12 | 55.35 | 72.60 | a | 73.16 | 70.76 | 60.47 | 42.07 | b | 37.50 | a | 25.13 | 46.07 | |||||||||
2021 | 23.17 | a | 11.46 | 38.65 | 45.67 | c | 56.92 | 72.83 | 71.63 | 70.39 | 64.40 | 52.75 | a | 36.88 | a | 24.37 | 47.43 | |||||||||
2022 | 12.95 | 16.39 | 31.77 | 39.80 | 58.05 | a | 70.02 | a | 72.84 | b | 69.27 | 63.55 | 49.35 | 32.67 | 15.58 | 44.35 | ||||||||||
2023 | 17.27 | 18.84 | 24.18 | 43.82 | 62.93 | d | 70.98 | a | 68.97 | 70.95 | a | 70.69 | q | 49.15 | a | 37.02 | 31.66 | 45.07 | a | |||||||
2024 | 16.92 | 32.74 | 34.25 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.97 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.78 | 18.20 | 30.62 | 44.20 | 57.31 | 67.76 | 71.62 | 68.58 | 60.55 | 47.42 | 32.19 | 18.85 | 44.33 | |||||||||||||
S.D. | 6.22 | 7.25 | 5.15 | 4.08 | 3.38 | 2.58 | 2.59 | 2.54 | 2.80 | 3.22 | 5.23 | 6.09 | 1.86 | |||||||||||||
SKEW | -0.11 | 0.17 | 0.29 | -0.45 | 0.42 | -0.17 | -0.08 | -0.31 | 0.02 | -0.41 | 0.01 | -0.66 | -0.00 | |||||||||||||
MAX | 27.52 | 32.74 | 45.68 | 51.58 | 65.40 | 72.83 | 78.13 | 74.79 | 65.77 | 53.23 | 45.27 | 31.66 | 48.31 | |||||||||||||
MIN | -0.98 | 3.84 | 20.92 | 31.88 | 51.34 | 61.26 | 64.10 | 63.16 | 54.43 | 40.02 | 20.07 | 0.18 | 39.96 | |||||||||||||
YRS | 53 | 53 | 52 | 52 | 50 | 52 | 52 | 52 | 51 | 51 | 52 | 53 | 46 |