YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | -28.00 | b | 13.00 | a | 28.00 | a | 19.00 | b | 34.00 | 42.00 | a | 57.00 | c | 37.00 | a | 34.00 | c | 31.00 | b | 24.00 | 21.00 | b | -28.00 | r | ||
1938 | 20.00 | 21.00 | 20.00 | 21.00 | b | 27.00 | 32.00 | 41.00 | 41.00 | 40.00 | 22.00 | a | 12.00 | b | 9.00 | b | 9.00 | g | ||||||||
1939 | 18.00 | 16.00 | c | 21.00 | 21.00 | 28.00 | b | 36.00 | a | 42.00 | 35.00 | 38.00 | 29.00 | 17.00 | 16.00 | 16.00 | f | |||||||||
1940 | 6.00 | 23.00 | a | 24.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | 30.00 | s | 21.00 | a | 15.00 | 19.00 | ----- | z | ||
1959 | -0.00 | 15.00 | 20.00 | 24.00 | 25.00 | 36.00 | 40.00 | 39.00 | 31.00 | a | 21.00 | 10.00 | 15.00 | -0.00 | a | |||||||||||
1960 | 4.00 | 2.00 | 15.00 | 22.00 | a | 30.00 | 35.00 | 42.00 | 37.00 | 28.00 | 25.00 | 17.00 | 10.00 | 2.00 | a | |||||||||||
1961 | 12.00 | 19.00 | 20.00 | 18.00 | 32.00 | 39.00 | 42.00 | 43.00 | 26.00 | 23.00 | 6.00 | 2.00 | a | 2.00 | a | |||||||||||
1962 | -22.00 | 2.00 | 17.00 | 26.00 | 29.00 | 30.00 | 35.00 | 39.00 | 34.00 | 26.00 | 17.00 | 11.00 | -22.00 | |||||||||||||
1963 | -7.00 | a | 21.00 | a | 20.00 | 25.00 | 30.00 | 36.00 | 40.00 | 42.00 | 41.00 | 22.00 | 18.00 | a | 5.00 | a | -7.00 | d | ||||||||
1964 | 19.00 | 15.00 | 20.00 | 18.00 | 23.00 | 40.00 | 40.00 | 37.00 | 31.00 | 26.00 | 16.00 | a | -8.00 | -8.00 | a | |||||||||||
1965 | 19.00 | 20.00 | 11.00 | 21.00 | 29.00 | 30.00 | 41.00 | 36.00 | 24.00 | 30.00 | a | 22.00 | 6.00 | a | 6.00 | b | ||||||||||
1966 | 13.00 | a | 18.00 | 16.00 | 22.00 | 29.00 | 35.00 | 38.00 | 39.00 | 34.00 | 19.00 | 23.00 | 22.00 | 13.00 | a | |||||||||||
1967 | 22.00 | 20.00 | 14.00 | 24.00 | 32.00 | 41.00 | 47.00 | 44.00 | 35.00 | 28.00 | 21.00 | -2.00 | a | -2.00 | a | |||||||||||
1968 | 6.00 | 13.00 | 21.00 | 19.00 | 30.00 | 40.00 | 42.00 | 41.00 | 31.00 | 24.00 | 21.00 | -1.00 | -1.00 | |||||||||||||
1969 | 4.00 | 16.00 | 19.00 | 27.00 | 29.00 | 41.00 | 42.00 | 37.00 | 32.00 | 19.00 | 19.00 | 10.00 | 4.00 | |||||||||||||
1970 | 2.00 | 21.00 | 23.00 | 21.00 | 27.00 | 43.00 | 40.00 | 43.00 | 26.00 | 22.00 | 18.00 | 12.00 | 2.00 | |||||||||||||
1971 | 10.00 | 10.00 | 17.00 | 25.00 | 29.00 | 37.00 | 39.00 | 41.00 | 29.00 | 12.00 | 18.00 | 15.00 | 10.00 | |||||||||||||
1972 | -3.00 | b | 3.00 | 21.00 | 22.00 | b | 29.00 | 39.00 | 44.00 | 41.00 | 29.00 | 17.00 | 20.00 | -17.00 | -17.00 | d | ||||||||||
1973 | 1.00 | 23.00 | 20.00 | 24.00 | 30.00 | 34.00 | 44.00 | 40.00 | 33.00 | 25.00 | a | 24.00 | 24.00 | 1.00 | a | |||||||||||
1974 | -4.00 | 20.00 | 17.00 | 24.00 | 29.00 | 35.00 | 42.00 | 43.00 | 29.00 | 26.00 | 22.00 | a | 13.00 | -4.00 | a | |||||||||||
1975 | 14.00 | 10.00 | 18.00 | 20.00 | 27.00 | 40.00 | a | 40.00 | 41.00 | 35.00 | 23.00 | 13.00 | 8.00 | 8.00 | a | |||||||||||
1976 | 12.00 | 3.00 | 15.00 | 24.00 | 33.00 | 32.00 | 41.00 | 43.00 | 35.00 | 22.00 | 10.00 | 9.00 | 3.00 | |||||||||||||
1977 | -8.00 | 21.00 | 23.00 | 25.00 | 32.00 | 39.00 | 42.00 | a | 42.00 | 36.00 | a | 30.00 | 2.00 | a | 21.00 | -8.00 | c | |||||||||
1978 | 6.00 | ----- | z | 25.00 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 4.83 | 15.00 | 19.38 | 22.36 | 29.23 | 36.91 | 41.86 | 40.05 | 32.32 | 23.61 | 16.74 | 9.57 | -0.95 | |||||||||||||
S.D. | 12.64 | 6.93 | 3.80 | 2.61 | 2.54 | 3.80 | 4.11 | 2.63 | 4.45 | 4.53 | 5.72 | 9.97 | 8.70 | |||||||||||||
SKEW | -0.91 | -0.80 | 0.03 | -0.11 | -0.37 | -0.30 | 2.24 | -0.34 | 0.08 | -0.44 | -0.92 | -0.85 | -0.79 | |||||||||||||
MAX | 22.00 | 23.00 | 28.00 | 27.00 | 34.00 | 43.00 | 57.00 | 44.00 | 41.00 | 31.00 | 24.00 | 24.00 | 13.00 | |||||||||||||
MIN | -28.00 | 2.00 | 11.00 | 18.00 | 23.00 | 30.00 | 35.00 | 35.00 | 24.00 | 12.00 | 2.00 | -17.00 | -22.00 | |||||||||||||
YRS | 24 | 23 | 24 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 19 |