| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1910 | -9.00 | 0.00 | 24.00 | 24.00 | 32.00 | 46.00 | 48.00 | 48.00 | 40.00 | 24.00 | 24.00 | 8.00 | -9.00 | |||||||||||||
| 1911 | -4.00 | 10.00 | b | 21.00 | 22.00 | 30.00 | 42.00 | 49.00 | 32.00 | 41.00 | 18.00 | 1.00 | -7.00 | -7.00 | ||||||||||||
| 1912 | -8.00 | 8.00 | 18.00 | 24.00 | 33.00 | 40.00 | 45.00 | 50.00 | 31.00 | 28.00 | 13.00 | -8.00 | -8.00 | |||||||||||||
| 1913 | -25.00 | 3.00 | 1.00 | 26.00 | 30.00 | 44.00 | 48.00 | ----- | z | 36.00 | 22.00 | 17.00 | ----- | z | -25.00 | |||||||||||
| 1914 | -8.00 | 4.00 | 14.00 | 32.00 | 36.00 | 45.00 | 52.00 | 47.00 | 40.00 | 34.00 | 19.00 | 0.00 | -8.00 | |||||||||||||
| 1915 | 0.00 | b | 2.00 | 16.00 | ----- | z | 31.00 | 36.00 | 46.00 | 48.00 | 36.00 | 30.00 | 7.00 | 0.00 | 0.00 | |||||||||||
| 1916 | 1.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.00 | ----- | z | 35.00 | ----- | z | ----- | z | ----- | z | 1.00 | ||||
| 1917 | ----- | z | ----- | z | ----- | z | 13.00 | 29.00 | 38.00 | 49.00 | 44.00 | 34.00 | ----- | z | 20.00 | a | 18.00 | 13.00 | ||||||||
| 1918 | -2.00 | -7.00 | a | 12.00 | 21.00 | 30.00 | a | 36.00 | 48.00 | a | 48.00 | a | 40.00 | ----- | z | 4.00 | 0.00 | -7.00 | ||||||||
| 1919 | 0.00 | a | 2.00 | 2.00 | ----- | z | 34.00 | ----- | z | ----- | z | ----- | z | ----- | z | 14.00 | a | 8.00 | a | 0.00 | b | 0.00 | ||||
| 1920 | 0.00 | 10.00 | 1.00 | a | 10.00 | 26.00 | 34.00 | 42.00 | 43.00 | a | 32.00 | 21.00 | a | 9.00 | a | -5.00 | d | -5.00 | ||||||||
| 1921 | 0.00 | a | -7.00 | 14.00 | a | 22.00 | 31.00 | 39.00 | 41.00 | 46.00 | 29.00 | 27.00 | 14.00 | 4.00 | -7.00 | |||||||||||
| 1922 | -10.00 | -3.00 | 2.00 | 21.00 | ----- | z | 37.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -10.00 | ||||||
| 1923 | ----- | z | ----- | z | ----- | z | ----- | z | 32.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.00 | ||
| 1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1925 | ----- | z | 14.00 | 21.00 | 33.00 | 36.00 | 40.00 | 55.00 | 51.00 | ----- | z | 32.00 | 19.00 | 14.00 | 14.00 | |||||||||||
| 1926 | 7.00 | 16.00 | 20.00 | 28.00 | 38.00 | 42.00 | 52.00 | 50.00 | 42.00 | 29.00 | a | 22.00 | f | 2.00 | 2.00 | |||||||||||
| 1927 | 9.00 | 2.00 | b | ----- | z | 24.00 | 30.00 | b | 45.00 | 50.00 | 46.00 | 39.00 | p | 30.00 | 20.00 | c | -4.00 | -4.00 | ||||||||
| 1928 | 12.00 | 12.00 | h | 22.00 | n | 22.00 | 30.00 | 38.00 | 48.00 | 46.00 | 40.00 | 32.00 | 24.00 | -2.00 | -2.00 | |||||||||||
| 1929 | -6.00 | -22.00 | 2.00 | 8.00 | 20.00 | 30.00 | 45.00 | o | 42.00 | 24.00 | 16.00 | -3.00 | -5.00 | a | -22.00 | |||||||||||
| 1930 | -25.00 | -2.00 | a | 6.00 | a | 22.00 | 22.00 | 26.00 | a | 50.00 | m | 54.00 | 37.00 | e | ----- | z | 8.00 | -5.00 | k | -25.00 | ||||||
| 1931 | 0.00 | 14.00 | 6.00 | c | 14.00 | c | 22.00 | ----- | z | 47.00 | 46.00 | b | 38.00 | a | 32.00 | l | 9.00 | h | 2.00 | k | 0.00 | |||||
| 1932 | 2.00 | c | 11.00 | c | 4.00 | g | 21.00 | c | 20.00 | c | 37.00 | a | 47.00 | a | 42.00 | a | 38.00 | ----- | z | 11.00 | e | 1.00 | e | 1.00 | ||
| 1933 | 4.00 | d | 0.00 | d | 11.00 | e | 15.00 | 20.00 | g | 44.00 | l | 50.00 | a | 30.00 | t | 42.00 | u | 32.00 | n | 17.00 | a | ----- | z | 0.00 | ||
| 1934 | 9.00 | a | 20.00 | b | 19.00 | m | 22.00 | d | 38.00 | g | 38.00 | a | 54.00 | b | 54.00 | a | 33.00 | 31.00 | 12.00 | 7.00 | 7.00 | |||||
| 1935 | -6.00 | 6.00 | 8.00 | 28.00 | 34.00 | 42.00 | 51.00 | 53.00 | 39.00 | 26.00 | 20.00 | 8.00 | -6.00 | |||||||||||||
| 1936 | ----- | z | 0.00 | 19.00 | 16.00 | 32.00 | 43.00 | 50.00 | 50.00 | a | 36.00 | 30.00 | 10.00 | 9.00 | 0.00 | |||||||||||
| 1937 | -8.00 | 2.00 | a | 20.00 | 28.00 | 36.00 | 37.00 | 35.00 | 52.00 | 36.00 | ----- | z | 16.00 | 12.00 | -8.00 | |||||||||||
| 1938 | 0.00 | 6.00 | 20.00 | 19.00 | 29.00 | 45.00 | 51.00 | 51.00 | 41.00 | 32.00 | 10.00 | 6.00 | 0.00 | |||||||||||||
| 1939 | 5.00 | -4.00 | 5.00 | 24.00 | 40.00 | 42.00 | 54.00 | 50.00 | 40.00 | 29.00 | 21.00 | 5.00 | b | -4.00 | ||||||||||||
| 1940 | -6.00 | 10.00 | 15.00 | 31.00 | 36.00 | 40.00 | 52.00 | 47.00 | 46.00 | 31.00 | 7.00 | 6.00 | b | -6.00 | ||||||||||||
| 1941 | 4.00 | 11.00 | 14.00 | 28.00 | 39.00 | 42.00 | 39.00 | a | 52.00 | 34.00 | 27.00 | 6.00 | 12.00 | 4.00 | ||||||||||||
| 1942 | -5.00 | -12.00 | 4.00 | 30.00 | 34.00 | 44.00 | 52.00 | ----- | z | 39.00 | c | 26.00 | 18.00 | a | 15.00 | b | -12.00 | |||||||||
| 1943 | 0.00 | 7.00 | a | 8.00 | 32.00 | ----- | z | 35.00 | 54.00 | 42.00 | 43.00 | 29.00 | 17.00 | 12.00 | 0.00 | |||||||||||
| 1944 | -1.00 | 9.00 | 10.00 | 25.00 | 28.00 | 42.00 | 50.00 | 46.00 | 41.00 | 35.00 | 10.00 | 7.00 | -1.00 | |||||||||||||
| 1945 | 10.00 | 14.00 | 16.00 | 10.00 | 39.00 | 39.00 | 53.00 | 52.00 | 38.00 | 24.00 | 9.00 | -4.00 | -4.00 | |||||||||||||
| 1946 | 2.00 | 2.00 | 18.00 | 30.00 | 32.00 | 41.00 | a | 53.00 | ----- | z | 32.00 | 24.00 | 18.00 | 1.00 | 1.00 | |||||||||||
| 1947 | ----- | z | ----- | z | 12.00 | 25.00 | 37.00 | 38.00 | 50.00 | a | 52.00 | 40.00 | 29.00 | a | ----- | z | 5.00 | 5.00 | ||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1949 | ----- | z | -8.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -8.00 | ||
| 1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.00 | ----- | z | ----- | z | 38.00 | ||
| 1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1970 | ----- | z | 14.00 | 16.00 | 20.00 | 31.00 | 40.00 | 52.00 | 52.00 | 34.00 | 20.00 | ----- | z | 8.00 | 8.00 | |||||||||||
| 1971 | -14.00 | 5.00 | 8.00 | a | 22.00 | 36.00 | 43.00 | 54.00 | 50.00 | 30.00 | a | 22.00 | a | 14.00 | 2.00 | -14.00 | ||||||||||
| 1972 | -6.00 | 4.00 | b | ----- | z | 30.00 | 30.00 | 49.00 | 54.00 | 48.00 | 40.00 | 20.00 | 7.00 | ----- | z | -6.00 | ||||||||||
| 1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.00 | 16.00 | 2.00 | 2.00 | ||||
| 1974 | -13.00 | -1.00 | 18.00 | 22.00 | 24.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -13.00 | ||||||
| 1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.00 | 49.00 | 38.00 | 18.00 | 6.00 | ----- | z | 6.00 | ||||||
| 1976 | -4.00 | 9.00 | ----- | z | 32.00 | 36.00 | 35.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -4.00 | ||||||
| 1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.00 | 3.00 | -1.00 | -1.00 | ||||
| 2005 | 16.00 | 16.00 | 16.00 | 23.00 | 34.00 | 41.00 | 50.00 | 53.00 | 43.00 | 32.00 | 13.00 | -5.00 | -5.00 | |||||||||||||
| 2006 | 5.00 | 3.00 | 14.00 | 27.00 | 37.00 | 38.00 | 54.00 | 49.00 | 35.00 | 28.00 | -9.00 | -1.00 | -9.00 | |||||||||||||
| 2007 | -8.00 | 0.00 | 4.00 | 29.00 | 37.00 | 33.00 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -8.00 | ||||||
| 2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | -2.10 | 4.10 | 12.11 | 23.29 | 31.83 | 39.71 | 49.50 | 48.14 | 37.05 | 26.83 | 12.00 | 3.39 | -5.60 | |||||||||||||
| S.D. | 8.72 | 8.38 | 6.73 | 6.37 | 5.15 | 4.44 | 4.47 | 4.43 | 4.48 | 5.57 | 7.33 | 6.57 | 4.31 | |||||||||||||
| SKEW | -0.54 | -0.65 | -0.21 | -0.62 | -0.69 | -0.71 | -1.36 | -1.43 | -0.66 | -0.46 | -0.62 | 0.28 | 0.43 | |||||||||||||
| MAX | 16.00 | 20.00 | 24.00 | 33.00 | 40.00 | 49.00 | 55.00 | 54.00 | 46.00 | 38.00 | 24.00 | 18.00 | 4.00 | |||||||||||||
| MIN | -25.00 | -22.00 | 1.00 | 8.00 | 20.00 | 26.00 | 35.00 | 32.00 | 24.00 | 14.00 | -9.00 | -8.00 | -14.00 | |||||||||||||
| NO YRS | 39 | 41 | 36 | 41 | 40 | 38 | 38 | 35 | 37 | 36 | 38 | 36 | 15 | |||||||||||||