YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | 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 | ----- | 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 | ----- | 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 | ----- | 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 | 18.00 | -6.00 | -28.00 | ----- | z | |||
1990 | -4.00 | a | -21.00 | 7.00 | 13.00 | 26.00 | 37.00 | 46.00 | 41.00 | 29.00 | 21.00 | a | 6.00 | -28.00 | -28.00 | b | ||||||||||
1991 | -18.00 | -13.00 | -9.00 | 24.00 | 30.00 | 46.00 | 47.00 | 46.00 | a | 30.00 | a | 11.00 | -4.00 | -16.00 | -18.00 | b | ||||||||||
1992 | -18.00 | -1.00 | 10.00 | 13.00 | 30.00 | 38.00 | 45.00 | 38.00 | a | 25.00 | 14.00 | 5.00 | a | -17.00 | -18.00 | b | ||||||||||
1993 | -22.00 | -20.00 | a | -17.00 | 23.00 | 34.00 | 37.00 | 49.00 | 47.00 | 28.00 | 14.00 | -11.00 | -32.00 | c | -32.00 | d | ||||||||||
1994 | -34.00 | -37.00 | a | -5.00 | 16.00 | 32.00 | a | 47.00 | 46.00 | 45.00 | 34.00 | 23.00 | 8.00 | -8.00 | -37.00 | b | ||||||||||
1995 | -11.00 | -17.00 | a | -23.00 | 7.00 | a | 35.00 | a | 44.00 | 46.00 | 49.00 | 28.00 | 23.00 | 1.00 | -12.00 | -23.00 | c | |||||||||
1996 | -29.00 | -34.00 | -16.00 | a | 19.00 | 29.00 | 42.00 | a | 48.00 | a | 47.00 | b | 33.00 | 15.00 | -13.00 | a | -30.00 | -34.00 | f | |||||||
1997 | -28.00 | -23.00 | a | -16.00 | c | 5.00 | b | 29.00 | a | 49.00 | 45.00 | 43.00 | 36.00 | b | 19.00 | 1.00 | -11.00 | -28.00 | i | |||||||
1998 | -20.00 | a | -14.00 | -9.00 | a | 24.00 | 38.00 | a | 39.00 | 50.00 | 49.00 | b | 36.00 | a | 27.00 | 9.00 | -11.00 | -20.00 | f | |||||||
1999 | -23.00 | -9.00 | 7.00 | a | 26.00 | 36.00 | 44.00 | 53.00 | 48.00 | 33.00 | a | 23.00 | 13.00 | a | -10.00 | a | -23.00 | d | ||||||||
2000 | -17.00 | a | -11.00 | 11.00 | b | 22.00 | 34.00 | a | 42.00 | 47.00 | 44.00 | 29.00 | 18.00 | -1.00 | a | -22.00 | a | -22.00 | f | |||||||
2001 | -23.00 | b | -22.00 | a | -7.00 | a | 19.00 | a | 36.00 | 48.00 | a | 45.00 | b | 46.00 | a | 32.00 | b | 18.00 | a | 15.00 | -6.00 | -23.00 | l | |||
2002 | -13.00 | a | -5.00 | b | -9.00 | c | 8.00 | f | 26.00 | a | 45.00 | a | 49.00 | c | 42.00 | b | 31.00 | b | 15.00 | b | 7.00 | b | -6.00 | g | ----- | z |
2003 | -20.00 | c | -15.00 | c | -16.00 | c | 16.00 | b | 34.00 | a | 44.00 | 54.00 | c | 45.00 | b | 26.00 | h | 23.00 | h | -3.00 | c | -9.00 | c | ----- | z | |
2004 | -27.00 | c | -22.00 | a | 3.00 | d | 19.00 | b | 29.00 | 42.00 | 48.00 | a | 36.00 | 34.00 | a | 25.00 | 13.00 | -13.00 | d | -27.00 | p | |||||
2005 | -24.00 | e | -4.00 | -9.00 | 25.00 | a | 22.00 | 54.00 | b | 48.00 | c | 46.00 | c | 34.00 | 26.00 | 5.00 | e | -7.00 | h | ----- | z | |||||
2006 | -2.00 | a | -19.00 | -0.00 | 28.00 | 37.00 | 47.00 | 52.00 | 48.00 | a | 33.00 | b | 20.00 | -2.00 | -6.00 | a | -19.00 | e | ||||||||
2007 | -14.00 | -20.00 | -6.00 | 7.00 | 38.00 | 44.00 | 52.00 | 47.00 | 32.00 | 24.00 | -5.00 | -14.00 | -20.00 | |||||||||||||
2008 | -21.00 | a | -29.00 | a | -15.00 | b | 21.00 | a | 30.00 | 47.00 | 50.00 | a | 46.00 | 38.00 | 23.00 | 3.00 | -26.00 | -29.00 | f | |||||||
2009 | -29.00 | -19.00 | -19.00 | 10.00 | 33.00 | 39.00 | 47.00 | 40.00 | 34.00 | 21.00 | 21.00 | -13.00 | -29.00 | |||||||||||||
2010 | -33.00 | -20.00 | 1.00 | 28.00 | 33.00 | b | 46.00 | c | 54.00 | 48.00 | 38.00 | 27.00 | -3.00 | a | -14.00 | -33.00 | f | |||||||||
2011 | -26.00 | -21.00 | -9.00 | a | 28.00 | 27.00 | 46.00 | 57.00 | 53.00 | 32.00 | 24.00 | 3.00 | 2.00 | -26.00 | a | |||||||||||
2012 | -16.00 | -8.00 | -5.00 | 21.00 | 38.00 | 42.00 | 58.00 | 46.00 | 27.00 | 21.00 | 5.00 | -12.00 | -16.00 | |||||||||||||
2013 | -16.00 | -24.00 | -9.00 | 9.00 | 25.00 | 42.00 | 46.00 | 49.00 | 38.00 | 24.00 | -4.00 | -20.00 | -24.00 | |||||||||||||
2014 | -24.00 | -16.00 | -14.00 | 10.00 | 30.00 | 48.00 | 50.00 | 48.00 | 35.00 | 17.00 | -11.00 | -11.00 | -24.00 | |||||||||||||
2015 | -17.00 | -18.00 | -15.00 | 18.00 | 30.00 | a | 48.00 | 47.00 | 43.00 | a | 37.00 | 25.00 | 4.00 | -4.00 | -18.00 | b | ||||||||||
2016 | -17.00 | -13.00 | 8.00 | 16.00 | 29.00 | 45.00 | 44.00 | 49.00 | 36.00 | 26.00 | 14.00 | -24.00 | -24.00 | |||||||||||||
2017 | -18.00 | -7.00 | -4.00 | 25.00 | 35.00 | 42.00 | 48.00 | 47.00 | 38.00 | 12.00 | 5.00 | -25.00 | -25.00 | |||||||||||||
2018 | -24.00 | -15.00 | -1.00 | 5.00 | 33.00 | 51.00 | 51.00 | 43.00 | 29.00 | 21.00 | -4.00 | -16.00 | -24.00 | |||||||||||||
2019 | -35.00 | -29.00 | -18.00 | 15.00 | 29.00 | 45.00 | 50.00 | 47.00 | 36.00 | 16.00 | -2.00 | -18.00 | -35.00 | |||||||||||||
2020 | -23.00 | -20.00 | 7.00 | 10.00 | 26.00 | 45.00 | 56.00 | 52.00 | 34.00 | 6.00 | 12.00 | -10.00 | -23.00 | |||||||||||||
2021 | -5.00 | -27.00 | -1.00 | 15.00 | 29.00 | 46.00 | 45.00 | 49.00 | 40.00 | 25.00 | 3.00 | b | -21.00 | -27.00 | b | |||||||||||
2022 | -27.00 | -26.00 | -9.00 | 15.00 | 32.00 | 42.00 | 50.00 | 50.00 | 33.00 | 13.00 | b | ----- | z | -22.00 | a | ----- | z | |||||||||
2023 | -21.00 | -22.00 | -9.00 | 7.00 | 32.00 | 48.00 | 47.00 | 52.00 | 42.00 | 16.00 | 4.00 | 10.00 | -22.00 | |||||||||||||
2024 | -17.00 | -5.00 | 6.00 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -20.46 | -17.89 | -6.00 | 16.94 | 31.35 | 44.44 | 49.12 | 46.15 | 33.45 | 19.74 | 2.59 | -15.06 | -24.57 | |||||||||||||
S.D. | 7.81 | 8.42 | 9.29 | 7.12 | 4.04 | 3.85 | 3.63 | 3.80 | 3.95 | 5.21 | 7.89 | 9.25 | 5.46 | |||||||||||||
SKEW | 0.39 | -0.02 | 0.23 | -0.08 | -0.13 | -0.01 | 0.82 | -0.68 | -0.07 | -0.58 | 0.13 | 0.32 | -0.63 | |||||||||||||
MAX | -2.00 | -1.00 | 11.00 | 28.00 | 38.00 | 54.00 | 58.00 | 53.00 | 42.00 | 27.00 | 21.00 | 10.00 | -16.00 | |||||||||||||
MIN | -35.00 | -37.00 | -23.00 | 5.00 | 22.00 | 37.00 | 44.00 | 36.00 | 25.00 | 6.00 | -13.00 | -32.00 | -37.00 | |||||||||||||
YRS | 35 | 35 | 35 | 33 | 34 | 34 | 34 | 34 | 33 | 34 | 34 | 33 | 21 |