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 | 22.70 | 1.61 | 12.16 | j | ||
1959 | -4.61 | 2.68 | 19.00 | 30.23 | 47.13 | 56.27 | 60.92 | e | 62.00 | a | 48.97 | 33.42 | e | 11.55 | j | 20.23 | a | 34.20 | a | |||||||
1960 | 7.42 | 7.48 | 8.19 | 35.20 | 47.10 | 53.27 | 60.90 | 61.97 | 53.73 | 39.63 | a | 26.21 | a | 8.30 | a | 34.12 | ||||||||||
1961 | -1.67 | m | 13.93 | 24.19 | 30.89 | b | 43.52 | 57.93 | b | 62.03 | b | 61.39 | 50.28 | a | 39.70 | a | 24.67 | 7.77 | 37.85 | a | ||||||
1962 | -2.48 | 2.71 | 19.60 | a | 31.80 | 51.50 | a | 56.33 | 59.06 | 59.17 | a | 48.76 | a | 42.06 | 28.57 | 12.13 | 34.10 | |||||||||
1963 | -4.52 | 3.08 | c | 23.23 | 37.03 | 45.29 | 59.48 | a | 63.06 | 58.65 | 52.37 | 48.42 | 30.20 | 1.55 | 34.82 | |||||||||||
1964 | 9.42 | 11.52 | 15.80 | a | 35.70 | 50.47 | a | 57.69 | a | 62.94 | 56.77 | 49.93 | 38.61 | 26.67 | 4.67 | a | 35.02 | |||||||||
1965 | -1.61 | 1.00 | 9.55 | 33.09 | h | ----- | z | ----- | z | 59.84 | 57.52 | 46.20 | 41.23 | 26.03 | 21.94 | 29.08 | c | |||||||||
1966 | -7.39 | 3.89 | 25.97 | 32.93 | 41.67 | a | 56.83 | 64.32 | 57.71 | 50.27 | 37.90 | 22.87 | 10.55 | 33.13 | ||||||||||||
1967 | 5.55 | -3.11 | 21.03 | 36.50 | 42.26 | 56.00 | 59.61 | 57.06 | 49.97 | 38.48 | 25.20 | 13.17 | a | 33.48 | ||||||||||||
1968 | 4.00 | 3.72 | 25.90 | 37.40 | 45.16 | 57.53 | 61.23 | 60.35 | 51.63 | ----- | z | 28.27 | 10.48 | 35.06 | a | |||||||||||
1969 | 0.52 | 8.93 | 15.13 | 36.83 | 48.61 | 51.93 | 61.68 | 61.06 | 51.90 | 37.48 | 24.48 | a | 12.06 | 34.22 | ||||||||||||
1970 | -4.63 | a | 3.39 | 15.13 | 34.37 | 47.94 | 59.83 | 62.94 | 60.48 | 51.21 | a | 40.19 | 25.47 | 9.65 | 33.83 | |||||||||||
1971 | -2.52 | 10.41 | a | 19.26 | 33.47 | 42.29 | 61.80 | 57.33 | a | 57.13 | 52.45 | a | 44.55 | 28.03 | 10.39 | 34.55 | ||||||||||
1972 | -3.00 | -0.55 | 16.71 | 31.53 | 50.35 | 55.40 | 59.81 | 60.71 | 50.13 | 35.97 | 27.87 | 4.61 | 32.46 | |||||||||||||
1973 | 6.97 | 10.96 | 32.48 | 35.87 | 44.71 | 57.50 | 60.87 | 61.90 | 51.97 | 44.61 | 27.00 | a | 9.71 | 37.05 | ||||||||||||
1974 | 2.84 | 5.18 | 19.39 | 35.33 | 43.19 | 54.07 | a | 62.39 | 56.45 | 44.67 | 40.42 | 28.21 | a | 17.58 | 34.14 | |||||||||||
1975 | 5.42 | 8.50 | 14.10 | 29.57 | 49.61 | 58.83 | 63.00 | 59.50 | a | 47.87 | 42.42 | 27.97 | 13.77 | 35.05 | ||||||||||||
1976 | -0.71 | 16.59 | 21.90 | 40.30 | 45.97 | 57.87 | ----- | z | 59.81 | 49.07 | 34.63 | d | 18.60 | 0.07 | a | 31.28 | a | |||||||||
1977 | -10.77 | 12.93 | 28.35 | 41.27 | 56.03 | a | 57.33 | 64.35 | 56.45 | 51.97 | 36.90 | 23.55 | a | 8.94 | 35.61 | |||||||||||
1978 | ----- | z | -0.29 | 17.81 | 33.83 | 49.10 | 55.83 | ----- | z | ----- | z | 53.00 | b | 38.94 | 23.76 | a | 5.23 | 30.80 | c | |||||||
1979 | -6.69 | b | -0.16 | c | 20.97 | a | 32.69 | a | ----- | z | 53.90 | ----- | z | 59.25 | c | 50.30 | 35.84 | 24.63 | 16.16 | 28.69 | b | |||||
1980 | ----- | z | ----- | z | 16.42 | 35.17 | ----- | z | 55.80 | ----- | z | ----- | z | ----- | z | 34.29 | 25.93 | 10.03 | 29.61 | f | ||||||
1981 | 7.90 | 13.79 | ----- | z | ----- | z | 45.39 | 57.30 | 61.61 | 60.52 | 49.20 | 36.84 | 27.00 | 9.45 | 36.90 | b | ||||||||||
1982 | -8.58 | e | 1.86 | 16.86 | c | 29.77 | 49.57 | a | 50.47 | ----- | z | 58.74 | 50.52 | a | 40.19 | 21.14 | b | 17.32 | 29.81 | a | ||||||
1983 | 10.90 | a | 18.25 | 26.55 | 32.30 | 43.79 | b | 54.79 | a | 65.03 | 61.26 | 52.43 | 39.53 | a | 27.67 | c | -5.53 | a | 35.58 | |||||||
1984 | 0.20 | a | 18.86 | a | 16.77 | 37.27 | 45.45 | 59.30 | 59.90 | 63.07 | a | 46.52 | a | 42.77 | a | 24.96 | b | 9.23 | a | 35.36 | ||||||
1985 | -1.68 | c | 4.00 | a | 25.03 | a | 39.50 | 48.97 | 52.10 | 59.07 | a | 56.74 | 51.00 | a | 38.26 | 16.50 | b | -4.45 | b | 32.09 | ||||||
1986 | 8.62 | b | 5.41 | a | 24.93 | c | 39.26 | c | 47.77 | 56.43 | b | 63.45 | 56.06 | 51.50 | 40.40 | a | 20.50 | b | 16.27 | a | 35.88 | |||||
1987 | 13.86 | b | 23.64 | 30.45 | 41.83 | a | 52.39 | 60.24 | a | 64.47 | a | 58.26 | 50.63 | 33.81 | 28.28 | a | 16.45 | b | 39.53 | |||||||
1988 | -0.33 | a | 2.04 | a | 24.22 | h | ----- | z | 52.68 | ----- | z | 65.32 | 64.40 | a | 50.07 | a | 35.46 | c | 26.69 | a | 10.31 | b | 34.07 | c | ||
1989 | 10.23 | -2.25 | 16.06 | 33.33 | 45.97 | 54.93 | 64.06 | 60.06 | 47.60 | 38.39 | 20.21 | a | 1.68 | 32.52 | ||||||||||||
1990 | 16.00 | 12.39 | 24.55 | 35.97 | 43.06 | 58.40 | 61.10 | 60.35 | 52.33 | 37.35 | 29.13 | 7.55 | 36.52 | |||||||||||||
1991 | 3.16 | 11.96 | 22.65 | 36.69 | a | 51.68 | 61.97 | 63.32 | 61.06 | 51.53 | 37.90 | 19.53 | 13.48 | 36.25 | ||||||||||||
1992 | 14.81 | 22.00 | 24.71 | 34.60 | 49.90 | 55.07 | 56.84 | 55.45 | 47.41 | a | 35.65 | 25.83 | 13.38 | b | 36.30 | |||||||||||
1993 | 4.55 | 7.89 | 18.37 | a | 32.33 | 47.00 | 54.53 | 60.90 | 61.16 | 45.63 | 36.16 | 24.37 | 15.16 | 34.01 | ||||||||||||
1994 | -4.48 | 1.96 | 23.35 | 33.28 | a | 48.68 | 59.38 | a | 60.10 | 57.68 | 55.07 | 43.06 | 29.03 | 17.39 | 35.37 | |||||||||||
1995 | 9.35 | 11.11 | 25.61 | 32.23 | 45.42 | 60.21 | b | 62.77 | 64.74 | 49.80 | 41.13 | 20.90 | 12.68 | 36.33 | ||||||||||||
1996 | 1.06 | 8.90 | 13.58 | 30.43 | 44.29 | 57.93 | 59.94 | 60.48 | 52.40 | 38.71 | 19.30 | 7.53 | a | 32.88 | ||||||||||||
1997 | 3.97 | 13.30 | a | 21.84 | 33.40 | 44.03 | 58.55 | a | 61.97 | 59.19 | 53.97 | 41.32 | 23.43 | 21.40 | a | 36.36 | ||||||||||
1998 | 13.19 | 25.46 | 24.97 | 40.57 | 53.06 | 56.07 | 63.03 | 62.16 | 55.17 | 43.35 | 31.30 | 17.13 | 40.46 | |||||||||||||
1999 | 6.23 | 18.86 | 22.97 | 38.93 | 51.10 | 58.27 | 66.58 | 62.52 | 53.00 | 40.10 | 33.07 | 18.43 | a | 39.17 | ||||||||||||
2000 | 7.65 | 20.07 | 31.65 | 37.47 | 52.26 | 57.90 | 64.42 | 64.48 | 52.43 | 45.84 | 28.37 | 4.29 | 38.90 | |||||||||||||
2001 | 14.00 | 6.25 | 20.77 | 40.10 | 50.83 | a | 58.30 | 62.80 | a | 62.29 | 51.50 | 39.66 | b | 38.70 | 22.74 | 39.00 | ||||||||||
2002 | 18.10 | 21.96 | 19.53 | a | 37.23 | 45.13 | 61.83 | 68.19 | 63.06 | 56.30 | 37.77 | 26.67 | 20.03 | 39.65 | ||||||||||||
2003 | 9.61 | 7.07 | 23.13 | 38.20 | 47.97 | 58.00 | a | 63.84 | 64.74 | 53.90 | 42.16 | 27.50 | 20.06 | 38.02 | ||||||||||||
2004 | 5.55 | 14.55 | 29.16 | 37.80 | 47.61 | 56.03 | a | 62.61 | 57.45 | 58.33 | 41.67 | a | 31.90 | 15.13 | 38.15 | |||||||||||
2005 | 9.10 | 17.07 | 20.42 | 39.63 | 47.19 | 62.77 | 64.77 | 61.42 | 56.13 | 42.55 | 28.40 | 13.65 | 38.59 | |||||||||||||
2006 | 22.55 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.55 | k | |
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 | 4.19 | 9.33 | 21.20 | 35.46 | 47.57 | 57.16 | 62.20 | 60.06 | 51.11 | 39.47 | 25.90 | 11.28 | 35.79 | |||||||||||||
S.D. | 7.62 | 7.46 | 5.40 | 3.33 | 3.39 | 2.69 | 2.35 | 2.49 | 2.83 | 3.27 | 4.06 | 6.68 | 2.28 | |||||||||||||
SKEW | 0.15 | 0.35 | -0.12 | 0.05 | 0.26 | -0.18 | 0.02 | 0.06 | 0.04 | 0.34 | 0.22 | -0.47 | 0.36 | |||||||||||||
MAX | 22.55 | 25.46 | 32.48 | 41.83 | 56.03 | 62.77 | 68.19 | 64.74 | 58.33 | 48.42 | 38.70 | 22.74 | 40.46 | |||||||||||||
MIN | -10.77 | -3.11 | 8.19 | 29.57 | 41.67 | 50.47 | 56.84 | 55.45 | 44.67 | 33.42 | 16.50 | -5.53 | 32.09 | |||||||||||||
YRS | 45 | 46 | 45 | 44 | 44 | 45 | 42 | 45 | 46 | 46 | 47 | 48 | 36 |