YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 15.00 | v | -3.00 | c | ----- | z |
1940 | -28.00 | -25.00 | a | -24.00 | 9.00 | g | 23.00 | r | 46.00 | x | 50.00 | t | 32.00 | f | 31.00 | e | 24.00 | c | -6.00 | f | -19.00 | a | ----- | z | ||
1941 | -21.00 | b | -16.00 | b | -17.00 | a | ----- | 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 | 25.00 | t | 27.00 | p | 39.00 | f | 42.00 | b | 35.00 | a | 27.00 | t | 29.00 | u | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | 8.00 | a | 32.00 | f | 34.00 | e | 42.00 | d | 33.00 | b | 27.00 | c | 16.00 | n | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | 17.00 | c | 13.00 | b | 26.00 | m | 37.00 | h | 34.00 | g | 29.00 | i | 19.00 | j | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | 15.00 | p | 18.00 | f | 30.00 | m | 36.00 | d | 40.00 | b | 20.00 | h | 23.00 | b | 28.00 | w | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | 18.00 | d | 22.00 | a | ----- | 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 | ----- | 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 | -1.00 | b | -15.00 | c | ----- | z |
1971 | -24.00 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | -0.00 | a | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.00 | a | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.00 | ----- | 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 | 43.00 | 44.00 | 34.00 | 26.00 | a | 14.00 | -22.00 | a | ----- | z | ||||
1991 | -25.00 | a | -13.00 | 1.00 | 20.00 | 32.00 | 45.00 | 42.00 | a | 45.00 | 26.00 | 23.00 | -5.00 | -9.00 | -25.00 | b | ||||||||||
1992 | -18.00 | -23.00 | -10.00 | 12.00 | d | 26.00 | 32.00 | 40.00 | 40.00 | a | 29.00 | 17.00 | 5.00 | -14.00 | b | -23.00 | g | |||||||||
1993 | -15.00 | a | -15.00 | -13.00 | 13.00 | a | 30.00 | 34.00 | 46.00 | a | 40.00 | a | 26.00 | b | 18.00 | b | -0.00 | c | -20.00 | b | -20.00 | m | ||||
1994 | -33.00 | -24.00 | 1.00 | a | -0.00 | c | 24.00 | a | 34.00 | 46.00 | b | 39.00 | a | 35.00 | 25.00 | 6.00 | a | -2.00 | b | -33.00 | k | |||||
1995 | -14.00 | a | -17.00 | -17.00 | -0.00 | 22.00 | 36.00 | a | 46.00 | b | 49.00 | 28.00 | b | 26.00 | d | -7.00 | -15.00 | -17.00 | j | |||||||
1996 | -27.00 | -36.00 | b | -21.00 | c | 8.00 | 23.00 | 36.00 | 45.00 | 40.00 | 32.00 | 13.00 | 1.00 | a | -22.00 | -36.00 | f | |||||||||
1997 | -26.00 | -13.00 | a | -15.00 | 4.00 | 23.00 | b | 38.00 | 37.00 | 39.00 | 32.00 | 17.00 | a | -9.00 | -1.00 | a | -26.00 | e | ||||||||
1998 | -20.00 | -0.00 | -9.00 | 21.00 | a | 31.00 | 28.00 | a | 45.00 | a | 43.00 | a | 28.00 | 20.00 | 8.00 | -20.00 | a | -20.00 | e | |||||||
1999 | -24.00 | -9.00 | a | -11.00 | a | 19.00 | 27.00 | a | 34.00 | 46.00 | 41.00 | 26.00 | 19.00 | 7.00 | -21.00 | b | -24.00 | e | ||||||||
2000 | -15.00 | a | -23.00 | -6.00 | 12.00 | 25.00 | 31.00 | 37.00 | a | 39.00 | a | 27.00 | 23.00 | a | 5.00 | -21.00 | a | -23.00 | e | |||||||
2001 | -12.00 | -21.00 | -6.00 | b | 16.00 | 27.00 | 38.00 | a | 39.00 | 41.00 | a | 30.00 | 20.00 | 18.00 | a | -0.00 | a | -21.00 | f | |||||||
2002 | -6.00 | -8.00 | -16.00 | a | 1.00 | 21.00 | 41.00 | 45.00 | 41.00 | 30.00 | 16.00 | 8.00 | a | -8.00 | -16.00 | b | ||||||||||
2003 | -21.00 | -24.00 | -21.00 | -3.00 | 23.00 | a | 29.00 | 43.00 | 39.00 | 24.00 | 20.00 | 1.00 | -9.00 | a | -24.00 | b | ||||||||||
2004 | -23.00 | -19.00 | a | -9.00 | 16.00 | 18.00 | 35.00 | a | 41.00 | 33.00 | 28.00 | 22.00 | 8.00 | -24.00 | -24.00 | b | ||||||||||
2005 | ----- | z | -10.00 | -12.00 | 22.00 | 22.00 | 43.00 | 45.00 | 43.00 | 38.00 | a | 28.00 | 5.00 | a | -4.00 | b | ----- | z | ||||||||
2006 | 3.00 | -23.00 | a | -4.00 | b | 17.00 | 23.00 | a | 38.00 | 48.00 | 46.00 | 32.00 | 20.00 | 8.00 | -4.00 | a | -23.00 | e | ||||||||
2007 | -8.00 | a | -20.00 | -13.00 | 6.00 | 28.00 | 41.00 | 43.00 | 44.00 | a | 33.00 | a | 31.00 | 6.00 | -9.00 | a | -20.00 | d | ||||||||
2008 | -21.00 | -18.00 | -17.00 | 8.00 | 21.00 | 42.00 | 47.00 | 38.00 | 37.00 | 27.00 | c | -1.00 | b | -17.00 | a | -21.00 | f | |||||||||
2009 | -19.00 | -18.00 | -20.00 | b | 19.00 | e | 31.00 | a | 32.00 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
2010 | ----- | z | ----- | z | ----- | z | ----- | z | 42.00 | v | 35.00 | a | 45.00 | 42.00 | c | 32.00 | d | 21.00 | e | 4.00 | b | -17.00 | d | ----- | z | |
2011 | -18.00 | t | -21.00 | -3.00 | 15.00 | e | 22.00 | b | 37.00 | a | 50.00 | b | 42.00 | 29.00 | 22.00 | a | 12.00 | c | -4.00 | ----- | z | |||||
2012 | -22.00 | -7.00 | -4.00 | 20.00 | 30.00 | 36.00 | 46.00 | 40.00 | 28.00 | 18.00 | 10.00 | -1.00 | -22.00 | |||||||||||||
2013 | -22.00 | -19.00 | -10.00 | 7.00 | 23.00 | 34.00 | a | 46.00 | 38.00 | 33.00 | 25.00 | a | 6.00 | -24.00 | -24.00 | b | ||||||||||
2014 | -30.00 | -26.00 | -28.00 | -0.00 | 24.00 | 37.00 | 39.00 | 37.00 | 29.00 | 18.00 | -11.00 | -21.00 | a | -30.00 | a | |||||||||||
2015 | -28.00 | -27.00 | -23.00 | 17.00 | 25.00 | 33.00 | 36.00 | 36.00 | 26.00 | 22.00 | 2.00 | 6.00 | -28.00 | |||||||||||||
2016 | -14.00 | -22.00 | -6.00 | 7.00 | 25.00 | 32.00 | 41.00 | 42.00 | 37.00 | 25.00 | 11.00 | -14.00 | -22.00 | |||||||||||||
2017 | -24.00 | -6.00 | -5.00 | 18.00 | 20.00 | 33.00 | 42.00 | 36.00 | 29.00 | 25.00 | 8.00 | -24.00 | -24.00 | |||||||||||||
2018 | -25.00 | -22.00 | -3.00 | -6.00 | 26.00 | 39.00 | 44.00 | 38.00 | 27.00 | 20.00 | -3.00 | -2.00 | -25.00 | |||||||||||||
2019 | -32.00 | -25.00 | -23.00 | 7.00 | 25.00 | 31.00 | 38.00 | 37.00 | 36.00 | 15.00 | -0.00 | -14.00 | -32.00 | |||||||||||||
2020 | -19.00 | -24.00 | -3.00 | 1.00 | 20.00 | a | 34.00 | 46.00 | 38.00 | 27.00 | 10.00 | 14.00 | -13.00 | -24.00 | a | |||||||||||
2021 | -6.00 | -32.00 | -7.00 | 10.00 | 23.00 | 37.00 | 42.00 | 39.00 | 30.00 | 22.00 | 2.00 | -16.00 | -32.00 | |||||||||||||
2022 | -27.00 | -23.00 | -19.00 | 12.00 | 24.00 | 33.00 | 42.00 | 43.00 | 29.00 | 21.00 | 3.00 | -16.00 | -27.00 | |||||||||||||
2023 | -24.00 | -17.00 | -14.00 | 4.00 | 29.00 | 32.00 | 40.00 | a | 34.00 | 32.00 | 19.00 | 9.00 | 4.00 | -24.00 | a | |||||||||||
2024 | -13.00 | -6.00 | 2.00 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -20.09 | -18.63 | -11.25 | 10.46 | 24.35 | 35.41 | 42.73 | 39.83 | 30.19 | 21.17 | 4.24 | -12.08 | -24.88 | |||||||||||||
S.D. | 8.01 | 7.78 | 8.04 | 7.72 | 4.01 | 3.92 | 3.49 | 3.57 | 3.52 | 4.34 | 6.57 | 8.70 | 4.08 | |||||||||||||
SKEW | 0.84 | 0.33 | -0.17 | -0.32 | -0.21 | 0.51 | -0.23 | 0.18 | 0.55 | -0.23 | -0.34 | 0.36 | -0.02 | |||||||||||||
MAX | 3.00 | -0.00 | 2.00 | 22.00 | 32.00 | 45.00 | 50.00 | 49.00 | 38.00 | 31.00 | 18.00 | 6.00 | -16.00 | |||||||||||||
MIN | -33.00 | -36.00 | -28.00 | -6.00 | 13.00 | 28.00 | 36.00 | 33.00 | 24.00 | 10.00 | -11.00 | -24.00 | -32.00 | |||||||||||||
YRS | 34 | 35 | 36 | 35 | 34 | 34 | 37 | 36 | 36 | 35 | 34 | 36 | 17 |