YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.00 | 41.00 | 26.00 | 19.00 | -2.00 | a | -31.00 | ----- | z | |||||
1917 | -20.00 | a | -35.00 | -16.00 | 22.00 | b | 30.00 | 37.00 | 41.00 | 40.00 | 34.00 | ----- | z | 18.00 | ----- | z | ----- | z | ||||||||
1918 | ----- | z | ----- | z | ----- | z | 15.00 | 25.00 | 38.00 | 45.00 | a | 44.00 | g | 25.00 | 27.00 | a | ----- | z | ----- | z | ----- | z | ||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | 35.00 | h | 42.00 | a | 51.00 | a | 41.00 | 35.00 | a | ----- | z | ----- | z | -20.00 | a | ----- | z | |
1920 | -18.00 | b | -20.00 | a | -15.00 | a | 7.00 | 30.00 | 40.00 | 45.00 | 40.00 | 28.00 | 25.00 | a | 5.00 | -15.00 | a | -20.00 | f | |||||||
1921 | -11.00 | b | -10.00 | 5.00 | b | ----- | z | 25.00 | 40.00 | f | 50.00 | 40.00 | ----- | z | ----- | z | -15.00 | p | -20.00 | ----- | 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 | ----- | 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 | -10.00 | f | ----- | z |
1972 | -31.00 | -13.00 | -11.00 | 15.00 | 31.00 | 38.00 | 46.00 | b | 42.00 | 31.00 | 12.00 | a | 10.00 | -20.00 | -31.00 | c | ||||||||||
1973 | -15.00 | -18.00 | 22.00 | 17.00 | 32.00 | 46.00 | 49.00 | 53.00 | c | 37.00 | 27.00 | a | 9.00 | a | -22.00 | -22.00 | e | |||||||||
1974 | -27.00 | -14.00 | -7.00 | 24.00 | a | 30.00 | a | 42.00 | a | 54.00 | 43.00 | a | 27.00 | b | 23.00 | 9.00 | -4.00 | -27.00 | f | |||||||
1975 | -13.00 | -18.00 | -3.00 | 3.00 | 34.00 | a | 45.00 | 47.00 | 52.00 | 36.00 | 27.00 | -4.00 | -13.00 | -18.00 | a | |||||||||||
1976 | -22.00 | a | -12.00 | -2.00 | 23.00 | 24.00 | 42.00 | 49.00 | a | 47.00 | a | 33.00 | 15.00 | -10.00 | a | -20.00 | -22.00 | d | ||||||||
1977 | -25.00 | a | -10.00 | 7.00 | 19.00 | 39.00 | 49.00 | 51.00 | 48.00 | 41.00 | 31.00 | -14.00 | -17.00 | -25.00 | a | |||||||||||
1978 | -21.00 | -17.00 | -8.00 | 24.00 | 30.00 | 42.00 | 49.00 | 48.00 | 42.00 | 24.00 | -2.00 | -13.00 | -21.00 | |||||||||||||
1979 | -21.00 | -24.00 | -9.00 | 6.00 | 31.00 | 43.00 | 53.00 | a | 44.00 | 39.00 | 22.00 | 5.00 | -10.00 | c | -24.00 | d | ||||||||||
1980 | -14.00 | c | -9.00 | -9.00 | a | 18.00 | 29.00 | 43.00 | 51.00 | 51.00 | 37.00 | 20.00 | 15.00 | a | -13.00 | a | -14.00 | f | ||||||||
1981 | -10.00 | a | -20.00 | a | 13.00 | 25.00 | 27.00 | 49.00 | 52.00 | 48.00 | 38.00 | 20.00 | a | 8.00 | -12.00 | -20.00 | c | |||||||||
1982 | -27.00 | a | -21.00 | -0.00 | 8.00 | 33.00 | 43.00 | 54.00 | 45.00 | 37.00 | 22.00 | a | 2.00 | a | -1.00 | a | -27.00 | d | ||||||||
1983 | -5.00 | -6.00 | 8.00 | a | 14.00 | 34.00 | 44.00 | a | 54.00 | 56.00 | 31.00 | 27.00 | a | 12.00 | -26.00 | a | -26.00 | d | ||||||||
1984 | -23.00 | -14.00 | b | -5.00 | a | 28.00 | 29.00 | 46.00 | a | 49.00 | 47.00 | a | 28.00 | 18.00 | 11.00 | -10.00 | d | -23.00 | i | |||||||
1985 | ----- | z | ----- | z | ----- | z | ----- | z | 38.00 | 39.00 | 45.00 | b | ----- | z | 22.00 | e | 23.00 | j | -13.00 | f | -18.00 | b | ----- | z | ||
1986 | -23.00 | -17.00 | c | -7.00 | 25.00 | a | 29.00 | 34.00 | a | 51.00 | a | 39.00 | 38.00 | c | 24.00 | -8.00 | -5.00 | a | -23.00 | j | ||||||
1987 | -21.00 | a | 9.00 | b | 9.00 | 17.00 | 36.00 | 44.00 | 48.00 | 40.00 | 39.00 | b | 16.00 | 12.00 | -4.00 | a | -21.00 | f | ||||||||
1988 | -27.00 | a | -29.00 | a | 4.00 | 18.00 | a | 33.00 | 44.00 | a | 38.00 | 40.00 | 38.00 | a | 16.00 | -1.00 | a | -8.00 | a | -29.00 | g | |||||
1989 | -13.00 | -27.00 | -13.00 | a | 9.00 | 26.00 | 37.00 | 53.00 | 49.00 | 28.00 | a | 16.00 | -3.00 | -28.00 | -28.00 | b | ||||||||||
1990 | -0.00 | a | -18.00 | 4.00 | 12.00 | 28.00 | 36.00 | 45.00 | 45.00 | 31.00 | 22.00 | 1.00 | -24.00 | e | -24.00 | f | ||||||||||
1991 | -13.00 | c | -2.00 | b | -3.00 | b | 24.00 | 30.00 | 50.00 | 43.00 | 43.00 | 27.00 | c | 11.00 | a | -5.00 | a | -12.00 | a | -13.00 | m | |||||
1992 | -15.00 | d | 2.00 | b | 10.00 | c | 14.00 | 30.00 | b | ----- | 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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -18.04 | -14.91 | -1.13 | 16.83 | 30.52 | 42.21 | 48.81 | 45.08 | 33.12 | 21.09 | 3.09 | -15.25 | -24.20 | |||||||||||||
S.D. | 7.61 | 9.90 | 9.81 | 6.99 | 3.81 | 4.23 | 4.38 | 4.81 | 5.58 | 5.31 | 8.59 | 7.95 | 3.99 | |||||||||||||
SKEW | 0.47 | 0.38 | 0.45 | -0.30 | 0.41 | -0.01 | -0.57 | 0.57 | -0.25 | -0.17 | -0.17 | -0.09 | -0.08 | |||||||||||||
MAX | -0.00 | 9.00 | 22.00 | 28.00 | 39.00 | 50.00 | 56.00 | 56.00 | 42.00 | 31.00 | 18.00 | -1.00 | -18.00 | |||||||||||||
MIN | -31.00 | -35.00 | -16.00 | 3.00 | 24.00 | 34.00 | 38.00 | 39.00 | 22.00 | 11.00 | -14.00 | -31.00 | -31.00 | |||||||||||||
YRS | 23 | 23 | 23 | 23 | 25 | 24 | 26 | 24 | 25 | 22 | 22 | 24 | 10 |