YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.00 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | -3.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
1972 | ----- | z | -33.00 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.00 | b | 32.00 | b | 16.00 | a | 16.00 | e | -16.00 | h | ----- | z |
1973 | -20.00 | d | -19.00 | a | ----- | z | 19.00 | c | ----- | z | ----- | z | ----- | z | 50.00 | a | 32.00 | 31.00 | 9.00 | c | -20.00 | h | ----- | z | ||
1974 | ----- | z | -16.00 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.00 | b | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | -10.00 | b | 6.00 | 35.00 | 47.00 | 52.00 | 49.00 | 35.00 | a | 25.00 | e | -0.00 | k | ----- | z | ----- | 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 | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | -9.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.00 | a | 42.00 | 40.00 | 30.00 | 24.00 | 19.00 | -13.00 | ----- | z | ||||||
2010 | -25.00 | -15.00 | 1.00 | 23.00 | 28.00 | 47.00 | 55.00 | 46.00 | 33.00 | 22.00 | 6.00 | -22.00 | -25.00 | |||||||||||||
2011 | -29.00 | -18.00 | -7.00 | 25.00 | 27.00 | 41.00 | 52.00 | 49.00 | 29.00 | 18.00 | 15.00 | -1.00 | -29.00 | |||||||||||||
2012 | -14.00 | -2.00 | 8.00 | 21.00 | 38.00 | 39.00 | 54.00 | 41.00 | 27.00 | 16.00 | 7.00 | -7.00 | -14.00 | |||||||||||||
2013 | -18.00 | -16.00 | -13.00 | 11.00 | 30.00 | 42.00 | 44.00 | 44.00 | 36.00 | 23.00 | 2.00 | -23.00 | -23.00 | |||||||||||||
2014 | -26.00 | -28.00 | -28.00 | 18.00 | 32.00 | 43.00 | 47.00 | 52.00 | 32.00 | 26.00 | -4.00 | -12.00 | -28.00 | |||||||||||||
2015 | -19.00 | -22.00 | -17.00 | 24.00 | 32.00 | 44.00 | 49.00 | 45.00 | 35.00 | 26.00 | 5.00 | 8.00 | -22.00 | |||||||||||||
2016 | -29.00 | -19.00 | 10.00 | 16.00 | 28.00 | 48.00 | 48.00 | 50.00 | 43.00 | 29.00 | 19.00 | -22.00 | -29.00 | |||||||||||||
2017 | -16.00 | -2.00 | 2.00 | 24.00 | 33.00 | 40.00 | 52.00 | 48.00 | 42.00 | 27.00 | 7.00 | -21.00 | -21.00 | |||||||||||||
2018 | -23.00 | e | -20.00 | -3.00 | -3.00 | 36.00 | 46.00 | 47.00 | 45.00 | 30.00 | 22.00 | 2.00 | -1.00 | -23.00 | e | |||||||||||
2019 | -33.00 | -31.00 | -20.00 | 20.00 | 29.00 | 38.00 | 48.00 | 44.00 | 43.00 | 18.00 | -0.00 | -21.00 | -33.00 | |||||||||||||
2020 | -12.00 | -22.00 | a | 8.00 | 12.00 | 22.00 | 46.00 | 50.00 | 46.00 | 31.00 | 10.00 | 10.00 | -17.00 | -22.00 | a | |||||||||||
2021 | -7.00 | -32.00 | 8.00 | 14.00 | 27.00 | 47.00 | 50.00 | 46.00 | 39.00 | a | 26.00 | 9.00 | -11.00 | -32.00 | a | |||||||||||
2022 | -26.00 | -21.00 | -6.00 | 19.00 | b | 34.00 | 44.00 | a | 48.00 | 47.00 | 30.00 | 19.00 | 3.00 | -15.00 | -26.00 | c | ||||||||||
2023 | -20.00 | -23.00 | -6.00 | 14.00 | 28.00 | 44.00 | 47.00 | 47.00 | 35.00 | c | ----- | z | ----- | z | ----- | z | ----- | z | ||||||||
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -21.13 | -20.19 | -5.00 | 16.44 | 30.60 | 43.25 | 49.24 | 46.61 | 33.84 | 22.24 | 7.81 | -12.71 | -25.33 | |||||||||||||
S.D. | 7.11 | 8.98 | 10.71 | 7.43 | 4.21 | 3.62 | 3.42 | 3.18 | 4.87 | 5.44 | 6.74 | 9.52 | 5.33 | |||||||||||||
SKEW | 0.24 | 0.64 | -0.39 | -1.14 | -0.08 | -0.49 | -0.28 | -0.39 | 0.73 | -0.49 | 0.24 | 0.77 | 0.48 | |||||||||||||
MAX | -7.00 | -2.00 | 10.00 | 25.00 | 38.00 | 48.00 | 55.00 | 52.00 | 43.00 | 31.00 | 19.00 | 8.00 | -14.00 | |||||||||||||
MIN | -33.00 | -33.00 | -28.00 | -3.00 | 22.00 | 36.00 | 42.00 | 40.00 | 27.00 | 10.00 | -4.00 | -23.00 | -33.00 | |||||||||||||
YRS | 15 | 16 | 17 | 16 | 15 | 16 | 17 | 18 | 19 | 17 | 16 | 14 | 12 |