YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | 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 | -17.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
1969 | ----- | z | ----- | z | ----- | z | 28.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 19.00 | ----- | z | ----- | z | ----- | z | ||
1970 | -30.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
1971 | ----- | z | -22.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -6.00 | ----- | z | ||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.00 | 46.00 | ----- | z | ----- | z | ----- | z | 15.00 | a | -18.00 | h | ----- | z | ||
1973 | ----- | z | ----- | z | ----- | z | 20.00 | ----- | z | 50.00 | g | 48.00 | h | ----- | z | ----- | z | 28.00 | e | ----- | z | ----- | z | ----- | z | |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.00 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | -9.00 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.00 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -17.00 | a | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | 28.00 | i | ----- | z | 50.00 | f | ----- | z | ----- | z | ----- | z | -7.00 | n | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | 28.00 | ----- | z | ----- | z | ----- | z | 37.00 | ----- | z | ----- | z | ----- | z | ----- | z | ||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.00 | g | ----- | z | 53.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
1981 | ----- | z | ----- | z | 12.00 | a | 24.00 | a | 27.00 | k | ----- | 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 | -18.00 | g | ----- | z |
1993 | -15.00 | g | -17.00 | b | -6.00 | b | 20.00 | 36.00 | 43.00 | 54.00 | 49.00 | b | 33.00 | 18.00 | -0.00 | -20.00 | -20.00 | m | ||||||||
1994 | -25.00 | -23.00 | a | 11.00 | 12.00 | 31.00 | 50.00 | 51.00 | 45.00 | 41.00 | 28.00 | a | 15.00 | b | -1.00 | -25.00 | d | |||||||||
1995 | -10.00 | a | -8.00 | a | -10.00 | h | 7.00 | 35.00 | 40.00 | 46.00 | 52.00 | a | 30.00 | 22.00 | 2.00 | -6.00 | a | -10.00 | l | |||||||
1996 | -24.00 | a | -31.00 | k | -7.00 | b | 20.00 | k | 33.00 | 45.00 | 49.00 | a | 50.00 | 34.00 | ----- | z | -16.00 | g | -14.00 | a | ----- | z | ||||
1997 | -16.00 | j | -11.00 | f | 2.00 | f | 8.00 | f | 25.00 | a | 46.00 | a | 47.00 | 48.00 | 36.00 | a | 13.00 | a | 1.00 | a | -10.00 | a | ----- | z | ||
1998 | -15.00 | d | -1.00 | a | -3.00 | b | 26.00 | 41.00 | 39.00 | a | 51.00 | 50.00 | a | 34.00 | a | 29.00 | 14.00 | a | -15.00 | b | -15.00 | m | ||||
1999 | -25.00 | a | 2.00 | 9.00 | 28.00 | a | 32.00 | 40.00 | 49.00 | 49.00 | a | 27.00 | 19.00 | c | 14.00 | b | -16.00 | b | -25.00 | j | ||||||
2000 | -20.00 | d | -0.00 | c | 9.00 | d | 13.00 | 30.00 | b | 41.00 | a | 45.00 | a | 49.00 | a | 28.00 | c | 15.00 | b | -3.00 | a | -18.00 | c | -20.00 | y | |
2001 | -10.00 | b | -19.00 | a | -5.00 | b | 20.00 | c | 36.00 | a | 42.00 | a | 51.00 | ----- | z | 29.00 | a | 17.00 | c | 21.00 | d | -2.00 | b | ----- | z | |
2002 | -6.00 | b | 1.00 | b | -5.00 | c | 14.00 | 28.00 | a | 46.00 | a | 53.00 | b | 48.00 | a | 34.00 | d | 21.00 | i | 11.00 | c | -0.00 | h | ----- | z | |
2003 | -16.00 | h | -16.00 | d | -11.00 | h | 13.00 | 40.00 | b | 44.00 | 50.00 | c | 47.00 | a | 27.00 | b | 21.00 | b | 6.00 | -7.00 | ----- | z | ||||
2004 | -27.00 | b | -15.00 | a | 6.00 | b | 18.00 | a | 30.00 | b | 42.00 | 50.00 | b | 38.00 | a | 38.00 | a | 22.00 | 13.00 | -12.00 | a | -27.00 | m | |||
2005 | -16.00 | a | -0.00 | a | 6.00 | a | 26.00 | c | 27.00 | b | 52.00 | 49.00 | a | 48.00 | a | 33.00 | b | 27.00 | b | 2.00 | a | -17.00 | -17.00 | o | ||
2006 | 3.00 | a | -18.00 | a | 5.00 | 26.00 | 35.00 | a | 45.00 | 52.00 | 54.00 | a | 31.00 | 20.00 | a | 4.00 | a | -4.00 | a | -18.00 | g | |||||
2007 | -20.00 | a | -21.00 | b | -3.00 | a | 13.00 | a | 36.00 | 46.00 | 50.00 | 53.00 | a | 31.00 | 28.00 | 4.00 | -2.00 | b | -21.00 | h | ||||||
2008 | -20.00 | -17.00 | -8.00 | 16.00 | 34.00 | b | 47.00 | 49.00 | 46.00 | a | 37.00 | 21.00 | a | 2.00 | -19.00 | -20.00 | d | |||||||||
2009 | -31.00 | a | -9.00 | -6.00 | 21.00 | 33.00 | 34.00 | 50.00 | 41.00 | 38.00 | 19.00 | 21.00 | -14.00 | -31.00 | a | |||||||||||
2010 | -32.00 | -14.00 | 3.00 | 25.00 | 29.00 | 51.00 | 59.00 | 50.00 | 41.00 | 24.00 | 6.00 | -16.00 | -32.00 | |||||||||||||
2011 | -22.00 | -21.00 | -4.00 | 24.00 | 24.00 | 49.00 | 58.00 | 49.00 | 30.00 | 24.00 | 8.00 | -6.00 | -22.00 | |||||||||||||
2012 | -11.00 | -3.00 | 9.00 | 19.00 | 42.00 | 43.00 | 57.00 | 42.00 | 28.00 | 21.00 | 6.00 | -8.00 | -11.00 | |||||||||||||
2013 | -11.00 | -12.00 | 1.00 | 17.00 | 28.00 | 47.00 | 45.00 | 51.00 | 41.00 | 23.00 | 3.00 | a | -13.00 | -13.00 | a | |||||||||||
2014 | -23.00 | -19.00 | -17.00 | 15.00 | 31.00 | 44.00 | 47.00 | 50.00 | 39.00 | 18.00 | -16.00 | -12.00 | -23.00 | |||||||||||||
2015 | -18.00 | -16.00 | -12.00 | 21.00 | 34.00 | 46.00 | 47.00 | 45.00 | 36.00 | 26.00 | 8.00 | -2.00 | d | -18.00 | d | |||||||||||
2016 | -19.00 | -10.00 | 3.00 | 15.00 | 29.00 | 46.00 | 50.00 | 52.00 | 41.00 | 27.00 | 16.00 | -27.00 | -27.00 | |||||||||||||
2017 | -10.00 | 3.00 | -4.00 | 26.00 | 38.00 | 46.00 | 54.00 | 49.00 | 41.00 | 19.00 | 9.00 | -18.00 | -18.00 | |||||||||||||
2018 | -21.00 | -15.00 | a | 7.00 | 1.00 | 44.00 | 51.00 | 53.00 | 49.00 | 31.00 | 24.00 | -7.00 | -1.00 | -21.00 | a | |||||||||||
2019 | -29.00 | -17.00 | -22.00 | 23.00 | 34.00 | a | 41.00 | a | 51.00 | 46.00 | 43.00 | 16.00 | -2.00 | -7.00 | -29.00 | b | ||||||||||
2020 | -11.00 | -21.00 | 19.00 | 11.00 | 28.00 | 51.00 | 51.00 | 47.00 | 36.00 | 11.00 | 9.00 | -7.00 | -21.00 | |||||||||||||
2021 | -1.00 | -26.00 | 15.00 | 14.00 | 29.00 | 46.00 | 53.00 | 49.00 | 37.00 | 27.00 | 7.00 | -7.00 | -26.00 | |||||||||||||
2022 | -20.00 | -16.00 | -0.00 | 18.00 | 35.00 | 45.00 | 52.00 | 51.00 | 31.00 | 14.00 | 2.00 | -14.00 | -20.00 | |||||||||||||
2023 | -12.00 | -16.00 | 3.00 | 20.00 | 30.00 | 44.00 | 48.00 | 49.00 | 40.00 | 19.00 | 1.00 | 13.00 | -16.00 | |||||||||||||
2024 | -16.00 | -1.00 | 10.00 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -17.71 | -12.48 | 0.87 | 18.56 | 32.66 | 44.75 | 50.36 | 48.35 | 34.78 | 21.26 | 6.19 | -10.16 | -21.94 | |||||||||||||
S.D. | 8.52 | 8.52 | 9.37 | 6.35 | 4.90 | 4.03 | 3.55 | 3.51 | 4.76 | 4.84 | 7.97 | 7.75 | 5.92 | |||||||||||||
SKEW | 0.38 | 0.52 | -0.35 | -0.57 | 0.47 | -0.27 | 0.55 | -1.05 | -0.04 | -0.15 | -0.35 | 0.52 | 0.01 | |||||||||||||
MAX | 3.00 | 3.00 | 19.00 | 28.00 | 44.00 | 52.00 | 59.00 | 54.00 | 43.00 | 29.00 | 21.00 | 13.00 | -11.00 | |||||||||||||
MIN | -32.00 | -26.00 | -22.00 | 1.00 | 24.00 | 34.00 | 45.00 | 38.00 | 27.00 | 11.00 | -16.00 | -27.00 | -32.00 | |||||||||||||
YRS | 31 | 31 | 30 | 32 | 32 | 32 | 33 | 31 | 32 | 31 | 31 | 32 | 17 |