YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | -6.00 | -17.00 | ----- | z | ||
1959 | -24.00 | -18.00 | 4.00 | 16.00 | 28.00 | 41.00 | 47.00 | e | 54.00 | a | 29.00 | 23.00 | e | -5.00 | j | 6.00 | a | -24.00 | v | |||||||
1960 | -26.00 | -8.00 | -16.00 | 17.00 | 31.00 | 42.00 | 50.00 | 50.00 | 36.00 | 22.00 | a | 8.00 | a | -9.00 | a | -26.00 | c | |||||||||
1961 | -16.00 | m | -4.00 | 8.00 | 17.00 | b | 29.00 | 46.00 | b | 52.00 | b | 53.00 | 31.00 | a | 27.00 | a | 15.00 | -17.00 | -17.00 | u | ||||||
1962 | -26.00 | -28.00 | -6.00 | a | 18.00 | 39.00 | a | 44.00 | 49.00 | 49.00 | a | 35.00 | a | 21.00 | 18.00 | -18.00 | -28.00 | d | ||||||||
1963 | -28.00 | -23.00 | c | -8.00 | 25.00 | 31.00 | 42.00 | a | 54.00 | 45.00 | 37.00 | 28.00 | 12.00 | -23.00 | -28.00 | d | ||||||||||
1964 | -17.00 | -1.00 | -1.00 | a | 19.00 | 37.00 | a | 42.00 | a | 53.00 | 37.00 | 34.00 | 26.00 | -16.00 | -17.00 | a | -17.00 | d | ||||||||
1965 | -28.00 | -34.00 | -15.00 | 24.00 | h | ----- | z | ----- | z | 50.00 | 43.00 | 28.00 | 26.00 | 9.00 | -2.00 | ----- | z | |||||||||
1966 | -30.00 | -26.00 | 7.00 | 24.00 | 25.00 | a | 45.00 | 50.00 | 50.00 | 35.00 | 26.00 | -0.00 | -9.00 | -30.00 | a | |||||||||||
1967 | -32.00 | -29.00 | -10.00 | 23.00 | 20.00 | 50.00 | 47.00 | 44.00 | 30.00 | 18.00 | 6.00 | -22.00 | a | -32.00 | a | |||||||||||
1968 | -24.00 | -13.00 | -5.00 | 19.00 | 31.00 | 44.00 | 49.00 | 47.00 | 40.00 | ----- | z | 15.00 | -28.00 | ----- | z | |||||||||||
1969 | -20.00 | -20.00 | -4.00 | 25.00 | 31.00 | 38.00 | 51.00 | 54.00 | 38.00 | 19.00 | 5.00 | a | -10.00 | -20.00 | a | |||||||||||
1970 | -35.00 | a | -23.00 | 1.00 | 12.00 | 30.00 | 47.00 | 49.00 | 49.00 | 37.00 | a | 29.00 | -3.00 | -13.00 | -35.00 | b | ||||||||||
1971 | -19.00 | -25.00 | a | -2.00 | 15.00 | 29.00 | 50.00 | 45.00 | a | 47.00 | 34.00 | a | 31.00 | 9.00 | -8.00 | -25.00 | c | |||||||||
1972 | -28.00 | -27.00 | -12.00 | 11.00 | 37.00 | 40.00 | 47.00 | 46.00 | 29.00 | 15.00 | 16.00 | -20.00 | -28.00 | |||||||||||||
1973 | -26.00 | -22.00 | 20.00 | 22.00 | 32.00 | 50.00 | 52.00 | 52.00 | 36.00 | 32.00 | 9.00 | a | -25.00 | -26.00 | a | |||||||||||
1974 | -28.00 | -19.00 | -13.00 | 20.00 | 30.00 | 44.00 | a | 51.00 | 45.00 | 26.00 | 20.00 | 14.00 | a | -0.00 | -28.00 | b | ||||||||||
1975 | -15.00 | -23.00 | -11.00 | 4.00 | 34.00 | 48.00 | 50.00 | 49.00 | a | 34.00 | 29.00 | 3.00 | -12.00 | -23.00 | a | |||||||||||
1976 | -27.00 | -19.00 | -4.00 | 25.00 | 30.00 | 45.00 | ----- | z | 46.00 | 32.00 | 15.00 | d | -8.00 | -26.00 | a | ----- | z | |||||||||
1977 | -40.00 | -10.00 | 5.00 | 20.00 | 38.00 | a | 47.00 | 51.00 | 45.00 | 41.00 | 28.00 | -15.00 | a | -18.00 | -40.00 | b | ||||||||||
1978 | ----- | z | -18.00 | -10.00 | 25.00 | 30.00 | 41.00 | ----- | z | ----- | z | 35.00 | b | 24.00 | -9.00 | a | -18.00 | ----- | z | |||||||
1979 | -30.00 | b | -31.00 | c | -3.00 | a | 7.00 | a | ----- | z | 38.00 | ----- | z | 44.00 | c | 35.00 | 25.00 | 7.00 | -8.00 | ----- | z | |||||
1980 | ----- | z | ----- | z | -12.00 | 21.00 | ----- | z | 42.00 | ----- | z | ----- | z | ----- | z | 17.00 | 12.00 | -17.00 | ----- | z | ||||||
1981 | -14.00 | -21.00 | ----- | z | ----- | z | 32.00 | 48.00 | 50.00 | 48.00 | 34.00 | 16.00 | 6.00 | -15.00 | ----- | z | ||||||||||
1982 | -30.00 | e | -30.00 | -10.00 | c | 13.00 | 37.00 | a | 38.00 | ----- | z | 45.00 | 34.00 | a | 26.00 | 2.00 | b | -7.00 | ----- | z | ||||||
1983 | -12.00 | a | -19.00 | 13.00 | 17.00 | 33.00 | b | 42.00 | a | 48.00 | 48.00 | 27.00 | 27.00 | a | 10.00 | c | -39.00 | a | -39.00 | i | ||||||
1984 | -30.00 | a | -12.00 | a | -11.00 | 24.00 | 32.00 | 51.00 | 45.00 | 50.00 | a | 27.00 | a | 25.00 | a | 11.00 | b | -12.00 | a | -30.00 | h | |||||
1985 | -28.00 | c | -29.00 | a | -1.00 | a | 22.00 | 35.00 | 34.00 | 49.00 | a | 50.00 | 31.00 | a | 28.00 | -10.00 | b | -22.00 | b | -29.00 | k | |||||
1986 | -21.00 | b | -20.00 | a | -8.00 | c | 22.00 | c | 33.00 | 38.00 | b | 56.00 | 46.00 | 40.00 | 30.00 | a | -1.00 | b | -12.00 | a | -21.00 | o | ||||
1987 | -15.00 | b | 15.00 | 14.00 | 20.00 | a | 40.00 | 40.00 | a | 50.00 | a | 45.00 | 40.00 | 22.00 | 14.00 | a | 2.00 | b | -15.00 | h | ||||||
1988 | -23.00 | a | -24.00 | a | 10.00 | h | ----- | z | 40.00 | ----- | z | 53.00 | 48.00 | a | 39.00 | a | 18.00 | c | 5.00 | a | -9.00 | b | ----- | z | ||
1989 | -20.00 | -25.00 | -13.00 | 14.00 | 22.00 | 38.00 | 58.00 | 53.00 | 28.00 | 22.00 | -4.00 | a | -29.00 | -29.00 | a | |||||||||||
1990 | 3.00 | -16.00 | 8.00 | 15.00 | 26.00 | 34.00 | 46.00 | 49.00 | 35.00 | 28.00 | 13.00 | -26.00 | -26.00 | |||||||||||||
1991 | -17.00 | -10.00 | -0.00 | 24.00 | a | 34.00 | 50.00 | 51.00 | 51.00 | 30.00 | 24.00 | -6.00 | -13.00 | -17.00 | a | |||||||||||
1992 | -14.00 | -2.00 | 3.00 | 18.00 | 35.00 | 40.00 | 47.00 | 48.00 | 30.00 | a | 21.00 | 14.00 | -14.00 | b | -14.00 | c | ||||||||||
1993 | -18.00 | -15.00 | -12.00 | a | 15.00 | 37.00 | 38.00 | 50.00 | 48.00 | 34.00 | 18.00 | 3.00 | -15.00 | -18.00 | a | |||||||||||
1994 | -32.00 | -20.00 | 5.00 | 15.00 | a | 26.00 | 38.00 | a | 47.00 | 46.00 | 41.00 | 28.00 | 11.00 | -4.00 | -32.00 | b | ||||||||||
1995 | -14.00 | -14.00 | -8.00 | 6.00 | 35.00 | 35.00 | b | 46.00 | 54.00 | 32.00 | 24.00 | 2.00 | -11.00 | -14.00 | b | |||||||||||
1996 | -26.00 | -36.00 | -12.00 | 12.00 | 24.00 | 45.00 | 51.00 | 52.00 | 37.00 | 16.00 | -7.00 | -24.00 | a | -36.00 | a | |||||||||||
1997 | -19.00 | -5.00 | a | -5.00 | 9.00 | 32.00 | 52.00 | a | 48.00 | 52.00 | 41.00 | 18.00 | 2.00 | -0.00 | a | -19.00 | c | |||||||||
1998 | -18.00 | 5.00 | 3.00 | 30.00 | 42.00 | 41.00 | 55.00 | 55.00 | 41.00 | 32.00 | 19.00 | -10.00 | -18.00 | |||||||||||||
1999 | -17.00 | 5.00 | 8.00 | 32.00 | 37.00 | 43.00 | 53.00 | 56.00 | 38.00 | 26.00 | 19.00 | -11.00 | a | -17.00 | a | |||||||||||
2000 | -18.00 | -4.00 | 14.00 | 23.00 | 36.00 | 44.00 | 54.00 | 56.00 | 33.00 | 28.00 | 5.00 | -22.00 | -22.00 | |||||||||||||
2001 | -6.00 | -10.00 | 9.00 | 21.00 | 38.00 | a | 44.00 | 47.00 | a | 49.00 | 31.00 | 29.00 | b | 25.00 | -0.00 | -10.00 | d | |||||||||
2002 | -2.00 | -2.00 | -2.00 | a | 16.00 | 32.00 | 45.00 | 60.00 | 50.00 | 38.00 | 24.00 | 15.00 | 5.00 | -2.00 | a | |||||||||||
2003 | -9.00 | -16.00 | -7.00 | 19.00 | 37.00 | 48.00 | a | 55.00 | 52.00 | 35.00 | 28.00 | 7.00 | -4.00 | -16.00 | a | |||||||||||
2004 | -22.00 | -15.00 | 7.00 | 24.00 | 33.00 | 44.00 | a | 53.00 | 42.00 | 41.00 | 31.00 | a | 16.00 | -18.00 | -22.00 | b | ||||||||||
2005 | -17.00 | -1.00 | -4.00 | 25.00 | 26.00 | 53.00 | 52.00 | 49.00 | 36.00 | 30.00 | 6.00 | -14.00 | -17.00 | |||||||||||||
2006 | 2.00 | ----- | 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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -20.89 | -16.13 | -2.13 | 18.66 | 32.41 | 43.31 | 50.50 | 48.69 | 34.46 | 24.35 | 5.91 | -13.65 | -23.06 | |||||||||||||
S.D. | 9.25 | 11.22 | 8.97 | 6.08 | 4.98 | 4.81 | 3.39 | 3.96 | 4.29 | 4.89 | 9.43 | 9.42 | 8.21 | |||||||||||||
SKEW | 0.63 | 0.59 | 0.48 | -0.34 | -0.38 | 0.06 | 0.61 | -0.30 | -0.15 | -0.39 | -0.46 | -0.07 | 0.21 | |||||||||||||
MAX | 3.00 | 15.00 | 20.00 | 32.00 | 42.00 | 53.00 | 60.00 | 56.00 | 41.00 | 32.00 | 25.00 | 6.00 | -2.00 | |||||||||||||
MIN | -40.00 | -36.00 | -16.00 | 4.00 | 20.00 | 34.00 | 45.00 | 37.00 | 26.00 | 15.00 | -16.00 | -39.00 | -40.00 | |||||||||||||
YRS | 45 | 46 | 45 | 44 | 44 | 45 | 42 | 45 | 46 | 46 | 47 | 48 | 31 |