YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.57 | c | ----- | z | ----- | z | ----- | z | ----- | z | 44.57 | k |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | 2.42 | l | 10.10 | i | 26.90 | k | ----- | z | 40.73 | i | 40.86 | j | 29.81 | i | 15.91 | i | 12.53 | o | 7.33 | m | ----- | z |
1971 | 1.29 | n | 3.16 | i | 4.76 | j | 16.38 | n | 24.90 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 10.78 | m | 3.50 | l | -11.43 | q | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -2.69 | o | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 5.07 | o | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.64 | q | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.17 | 23.32 | ----- | z | -2.12 | g | 25.24 | j | ||
2004 | -6.50 | a | -5.69 | 5.97 | a | 15.27 | 21.84 | 29.70 | c | 35.32 | 32.74 | 31.03 | 22.55 | 7.83 | 3.15 | d | 16.10 | |||||||||
2005 | 6.67 | a | 0.71 | g | 4.19 | 13.90 | a | 23.80 | a | 33.83 | 40.30 | a | 38.16 | 32.93 | 25.86 | b | 10.40 | -0.33 | a | 20.88 | a | |||||
2006 | 2.82 | c | -1.32 | 6.16 | 17.93 | 27.13 | 37.52 | a | 44.77 | 38.32 | 26.40 | 18.93 | a | 8.23 | 5.81 | j | 20.63 | a | ||||||||
2007 | -5.23 | a | 3.48 | a | 12.04 | d | 18.50 | 27.45 | 37.00 | 41.94 | 38.26 | 30.47 | 18.52 | 10.42 | f | -5.32 | 19.74 | a | ||||||||
2008 | -8.71 | -4.14 | -5.39 | 3.66 | a | 24.19 | 35.67 | 44.48 | 41.06 | 30.70 | 22.55 | 12.40 | 2.39 | 16.57 | ||||||||||||
2009 | 0.71 | 4.50 | 7.94 | 13.83 | a | 28.06 | 32.90 | 37.61 | 35.39 | 31.93 | b | 21.42 | 13.90 | -1.47 | a | 18.89 | ||||||||||
2010 | 4.58 | 0.64 | c | 9.70 | d | 16.70 | 25.10 | 38.70 | ----- | z | 39.94 | 33.43 | 26.39 | 11.38 | a | 8.93 | a | 19.59 | a | |||||||
2011 | -6.42 | -3.50 | 6.87 | 10.00 | 19.81 | 29.30 | 38.19 | 38.73 | a | 31.17 | f | 20.78 | d | 10.60 | 0.26 | 14.97 | a | |||||||||
2012 | 0.45 | -0.19 | b | 10.73 | e | 20.24 | e | 28.86 | b | ----- | z | 44.50 | m | 42.94 | o | 33.96 | d | 24.87 | 17.83 | 8.66 | b | 16.16 | c | |||
2013 | 3.77 | 2.04 | 13.32 | 16.47 | 27.97 | 40.67 | 45.06 | 42.16 | 37.40 | 21.61 | 16.23 | 5.03 | 22.64 | |||||||||||||
2014 | 5.35 | 11.82 | 11.55 | 19.57 | 29.52 | 36.73 | 45.13 | 41.39 | 37.00 | 28.32 | 14.24 | a | 12.03 | 24.39 | ||||||||||||
2015 | 12.74 | 13.79 | 16.19 | 22.13 | 28.16 | 40.27 | 42.39 | 42.77 | 37.70 | 30.29 | 14.80 | 8.35 | 25.80 | |||||||||||||
2016 | 7.07 | a | 10.00 | 15.30 | a | 22.90 | 28.10 | 39.67 | 44.53 | a | 40.13 | 36.03 | 31.84 | 20.20 | ----- | z | 26.89 | a | ||||||||
2017 | 10.94 | 15.00 | 21.39 | 23.44 | c | 27.03 | 40.07 | 44.06 | 40.97 | ----- | z | 25.45 | 25.67 | 13.45 | 26.13 | a | ||||||||||
2018 | 17.36 | i | 13.43 | 13.35 | 22.21 | a | 30.77 | a | 39.72 | a | 44.61 | 42.00 | 37.83 | 31.26 | 10.60 | 4.61 | 26.40 | a | ||||||||
2019 | 8.26 | 5.82 | 12.61 | 22.77 | 25.10 | 34.07 | 43.10 | 41.87 | 37.87 | 18.39 | 14.40 | 10.03 | 22.86 | |||||||||||||
2020 | 8.45 | 4.97 | 18.87 | 21.42 | d | 33.14 | j | 40.10 | 43.65 | 44.52 | 34.85 | c | 23.29 | 17.10 | 5.03 | 23.84 | a | |||||||||
2021 | 8.63 | d | 7.86 | 12.29 | 20.57 | 28.33 | a | 40.17 | 46.16 | 41.97 | 36.57 | 25.37 | a | 20.87 | 11.52 | 25.02 | ||||||||||
2022 | 4.84 | 3.32 | 11.97 | 19.60 | 29.32 | 39.20 | 45.32 | 42.61 | 37.27 | 22.23 | 8.63 | 9.81 | 22.84 | |||||||||||||
2023 | 5.45 | 7.57 | 9.63 | a | 16.41 | a | 29.61 | 33.30 | 41.90 | 41.94 | 33.70 | 23.74 | 13.17 | 8.97 | 22.12 | |||||||||||
2024 | 5.58 | 7.76 | 13.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.79 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 3.47 | 4.86 | 10.84 | 17.88 | 26.85 | 36.77 | 42.70 | 40.47 | 33.91 | 24.14 | 14.13 | 5.84 | 21.72 | |||||||||||||
S.D. | 6.04 | 6.12 | 5.61 | 4.91 | 2.85 | 3.64 | 3.02 | 2.90 | 3.56 | 3.90 | 4.70 | 5.23 | 3.40 | |||||||||||||
SKEW | -0.68 | -0.01 | -0.84 | -1.31 | -0.98 | -0.74 | -1.14 | -1.01 | -0.66 | 0.47 | 0.75 | -0.49 | -0.63 | |||||||||||||
MAX | 12.74 | 15.00 | 21.39 | 23.44 | 30.77 | 40.67 | 46.16 | 44.57 | 37.87 | 31.84 | 25.67 | 13.45 | 25.80 | |||||||||||||
MIN | -8.71 | -5.69 | -5.39 | 3.66 | 19.81 | 29.30 | 35.32 | 32.74 | 26.40 | 18.39 | 7.83 | -5.32 | 16.10 | |||||||||||||
YRS | 20 | 20 | 21 | 20 | 19 | 19 | 18 | 20 | 19 | 21 | 19 | 18 | 10 |