YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.26 | ----- | z | ----- | z | 43.90 | 29.90 | 12.84 | 38.23 | h | ||||
1950 | -3.68 | 0.29 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -1.70 | j | ||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 61.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.16 | k | |
1968 | ----- | z | ----- | z | 28.19 | ----- | z | 45.23 | 58.67 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.03 | i | |||
1969 | ----- | z | ----- | z | ----- | z | 40.43 | 50.77 | ----- | z | ----- | z | ----- | z | 51.17 | 39.00 | ----- | z | 14.03 | b | 39.08 | g | ||||
1970 | -3.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.84 | ----- | z | 51.63 | ----- | z | 26.57 | ----- | z | 34.16 | h | ||||
1971 | -2.26 | ----- | z | 20.16 | ----- | z | ----- | z | 62.00 | a | ----- | z | 57.65 | 53.17 | ----- | z | ----- | z | ----- | z | 38.14 | g | ||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.94 | k | |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | 40.57 | 44.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.57 | j | ||
1977 | ----- | z | ----- | z | 30.70 | a | ----- | z | ----- | z | ----- | z | 64.61 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.66 | j | |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | 50.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.03 | k | |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.00 | ----- | z | ----- | z | ----- | z | ----- | z | 61.00 | k | |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.71 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.71 | k |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.16 | k | |
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 | 49.70 | 38.10 | 21.70 | 1.17 | a | 27.67 | h | |||
1990 | 16.94 | 10.59 | a | 26.87 | a | 36.69 | a | 45.23 | 60.27 | 63.10 | 61.58 | 54.93 | ----- | z | 29.30 | 9.87 | 37.76 | a | ||||||||
1991 | 4.40 | a | 15.21 | 25.06 | 40.03 | 54.71 | ----- | z | 62.42 | 60.77 | 48.83 | 35.55 | 15.77 | 12.23 | 34.09 | a | ||||||||||
1992 | 13.90 | 21.07 | a | 22.35 | 33.79 | a | 47.13 | 52.59 | c | 55.70 | a | 54.10 | a | 47.60 | 35.97 | 26.80 | 12.80 | a | 35.32 | |||||||
1993 | 0.61 | 6.38 | b | ----- | z | 33.48 | a | 48.63 | a | 55.00 | 62.84 | 62.39 | 46.27 | 36.03 | 24.17 | a | 14.81 | 35.51 | a | |||||||
1994 | -7.27 | a | -1.07 | a | 23.83 | a | 34.20 | 47.71 | 58.53 | 59.00 | 57.06 | 54.50 | 43.90 | 30.25 | b | 16.42 | 34.76 | |||||||||
1995 | 8.06 | 7.96 | 24.23 | 32.47 | 46.90 | 60.43 | 61.71 | 64.93 | a | 48.03 | 39.68 | 20.07 | b | 9.70 | a | 35.35 | ||||||||||
1996 | -2.97 | 5.79 | 13.43 | a | 30.67 | 46.57 | a | 57.86 | a | 59.23 | 58.03 | b | ----- | z | 38.16 | 18.93 | a | 8.52 | b | 30.38 | a | |||||
1997 | -0.03 | 9.64 | 20.55 | 33.07 | a | 42.80 | a | 57.66 | a | 60.84 | 58.87 | 53.43 | b | 39.07 | a | 21.70 | 19.70 | a | 34.77 | |||||||
1998 | 11.69 | b | 24.24 | c | 23.55 | b | 40.73 | d | 52.45 | b | 55.96 | c | ----- | z | 61.19 | e | 52.48 | e | 40.86 | c | 29.03 | 18.11 | c | 37.30 | a | |
1999 | 1.87 | a | 17.93 | a | 21.10 | a | 40.20 | 51.41 | b | 57.52 | a | 64.31 | b | 59.36 | c | 48.96 | c | 35.00 | a | 30.32 | b | 15.07 | b | 36.92 | ||
2000 | 3.84 | 16.07 | 28.77 | 34.81 | c | 48.39 | 54.77 | 62.52 | 60.97 | 48.63 | 41.84 | 25.33 | 0.29 | 35.52 | ||||||||||||
2001 | 8.16 | -0.68 | 17.23 | 37.67 | 50.17 | a | 58.07 | 62.10 | 61.26 | ----- | z | 37.10 | 34.87 | 20.84 | 35.16 | a | ||||||||||
2002 | 15.55 | 17.67 | a | 16.06 | 34.29 | b | 42.55 | 59.10 | 65.83 | a | 60.00 | a | 54.50 | f | 35.84 | 24.13 | 17.42 | 35.31 | a | |||||||
2003 | 6.07 | a | 3.75 | 20.50 | a | 35.32 | b | 46.48 | 56.14 | a | 61.77 | a | 60.80 | a | 49.60 | 37.84 | 25.40 | 16.93 | a | 35.05 | ||||||
2004 | 4.16 | 10.48 | 26.83 | a | 35.00 | 43.38 | b | 56.20 | e | 60.14 | c | 54.35 | 55.07 | 40.35 | 29.53 | 14.19 | 35.81 | |||||||||
2005 | 7.37 | a | 16.46 | 19.06 | 39.97 | 45.35 | ----- | z | 64.00 | ----- | z | 53.77 | 41.81 | 27.37 | 12.13 | 32.73 | b | |||||||||
2006 | 21.39 | 10.68 | 22.16 | 41.17 | 50.35 | 57.30 | 64.06 | 61.23 | 49.27 | 34.48 | 27.07 | 21.13 | 38.36 | |||||||||||||
2007 | 12.13 | 2.25 | 26.48 | 36.17 | 49.90 | 59.67 | 60.90 | a | 61.00 | 51.70 | 46.16 | 26.90 | 8.13 | 36.78 | ||||||||||||
2008 | 3.10 | 3.31 | 17.00 | 34.20 | 44.94 | 58.10 | 60.94 | 57.84 | 53.23 | 39.39 | 25.93 | 1.74 | 33.31 | |||||||||||||
2009 | -6.84 | 10.61 | 20.35 | 36.83 | 46.94 | 53.87 | 56.26 | 57.58 | 53.10 | 36.74 | 31.53 | 11.32 | 34.02 | |||||||||||||
2010 | 2.87 | 4.96 | 28.26 | 41.67 | 47.52 | 59.13 | 64.94 | 64.55 | 50.57 | 42.19 | 27.90 | 8.16 | 36.89 | |||||||||||||
2011 | 1.55 | 7.07 | 19.45 | 36.43 | 48.19 | 58.07 | 67.94 | 62.00 | 51.00 | 42.23 | 29.83 | 18.29 | 36.84 | |||||||||||||
2012 | 13.26 | 18.62 | 37.55 | 37.93 | 52.10 | 60.27 | 67.52 | 58.71 | 47.70 | 36.26 | 26.77 | 15.94 | 39.38 | |||||||||||||
2013 | 7.03 | 9.14 | 15.90 | 31.87 | 46.68 | 59.28 | a | 63.10 | 60.42 | 53.33 | 38.94 | 23.10 | 4.35 | 34.43 | ||||||||||||
2014 | -3.65 | -6.11 | 13.84 | 33.10 | 48.39 | 61.43 | 61.77 | 63.03 | 51.57 | b | 38.26 | 18.23 | 19.10 | 33.25 | ||||||||||||
2015 | 8.29 | -0.14 | 21.48 | 36.30 | 47.94 | 59.10 | a | 61.87 | 59.29 | 58.17 | 40.74 | 33.00 | 26.68 | 37.73 | ||||||||||||
2016 | 8.32 | 15.24 | 31.90 | 38.37 | 47.03 | 59.70 | 64.35 | 63.55 | 56.83 | 44.10 | 34.50 | 14.10 | a | 39.83 | ||||||||||||
2017 | 12.26 | 20.75 | 24.26 | 40.07 | 47.87 | 58.67 | 62.32 | 58.52 | 55.73 | 43.00 | 24.83 | 12.55 | 38.40 | |||||||||||||
2018 | 2.52 | 1.33 | a | 21.39 | 25.77 | 54.61 | 62.17 | 63.65 | 61.94 | 56.43 | 37.77 | 21.53 | 19.42 | 35.71 | ||||||||||||
2019 | 5.65 | -1.18 | 16.94 | 36.27 | 45.27 | a | 58.83 | 65.65 | 59.90 | 56.93 | 39.55 | 24.63 | 14.77 | 35.27 | ||||||||||||
2020 | 12.65 | 7.00 | 29.06 | 34.67 | 48.53 | a | 59.33 | 65.23 | 61.16 | 51.07 | 35.16 | 29.40 | 16.23 | 37.46 | ||||||||||||
2021 | 13.65 | 2.44 | a | 29.00 | 37.10 | 48.32 | 62.10 | 61.87 | 61.29 | 52.17 | 45.52 | 28.03 | 15.71 | 38.10 | ||||||||||||
2022 | -3.42 | 1.00 | a | 22.65 | 31.87 | 51.23 | 60.87 | 63.97 | 60.35 | 53.33 | 38.29 | 26.90 | 9.29 | 34.69 | ||||||||||||
2023 | 14.45 | 8.68 | 20.58 | 37.47 | 51.81 | 59.97 | 59.32 | 61.71 | 56.97 | 43.71 | 26.83 | 25.23 | 38.89 | |||||||||||||
2024 | 14.54 | c | 21.31 | 24.71 | 36.59 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.19 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 5.86 | 8.85 | 23.01 | 36.13 | 48.11 | 58.49 | 62.57 | 60.24 | 52.20 | 39.51 | 26.43 | 13.76 | 36.26 | |||||||||||||
S.D. | 7.24 | 7.76 | 5.31 | 3.49 | 2.98 | 2.30 | 2.63 | 2.41 | 3.07 | 3.18 | 4.33 | 6.05 | 1.85 | |||||||||||||
SKEW | 0.02 | 0.21 | 0.40 | -0.52 | 0.28 | -0.60 | -0.41 | -0.57 | 0.06 | 0.33 | -0.35 | -0.32 | 0.25 | |||||||||||||
MAX | 21.39 | 24.24 | 37.55 | 41.67 | 54.71 | 62.17 | 67.94 | 64.93 | 58.17 | 46.16 | 34.87 | 26.68 | 39.83 | |||||||||||||
MIN | -7.27 | -6.11 | 13.43 | 25.77 | 42.55 | 52.59 | 55.70 | 54.10 | 46.27 | 34.48 | 15.77 | 0.29 | 33.25 | |||||||||||||
YRS | 38 | 36 | 37 | 36 | 38 | 34 | 40 | 35 | 35 | 36 | 37 | 37 | 26 |