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 | 25.39 | h | ----- | z |
1955 | 16.38 | b | 16.28 | c | 28.84 | 54.78 | 64.03 | 67.43 | 77.60 | 75.45 | a | 63.82 | 51.23 | a | 26.95 | a | 13.11 | 46.33 | ||||||||
1956 | 11.29 | 15.16 | 26.85 | a | 41.95 | 59.79 | 70.31 | f | 68.08 | a | 68.98 | b | 57.47 | 54.66 | b | 31.63 | 22.69 | 41.69 | a | |||||||
1957 | 9.89 | 21.09 | a | 30.75 | a | 47.65 | 57.76 | 67.83 | 76.84 | 70.27 | a | 59.02 | 48.90 | 34.17 | 27.54 | d | 45.98 | |||||||||
1958 | 24.13 | a | 15.91 | 33.10 | a | 48.70 | 61.55 | 63.35 | d | 70.43 | a | 72.39 | 63.98 | 54.56 | 37.32 | 15.91 | b | 46.78 | ||||||||
1959 | 11.38 | a | 15.64 | 34.60 | 48.67 | 61.84 | 71.42 | 73.53 | 75.55 | 62.97 | 45.27 | 26.37 | 30.77 | 46.50 | ||||||||||||
1960 | 18.10 | 19.81 | 21.45 | 48.33 | 58.34 | 66.15 | 72.81 | 72.97 | 63.07 | 52.15 | 37.83 | 20.85 | 45.99 | |||||||||||||
1961 | 17.18 | a | 26.45 | 35.31 | 41.40 | a | 56.85 | 69.72 | 70.73 | 72.61 | 61.55 | 53.23 | 34.57 | 17.58 | 46.43 | |||||||||||
1962 | 11.82 | 16.86 | 26.94 | 45.08 | 64.03 | 68.03 | 70.55 | 71.27 | 59.48 | 53.60 | 39.97 | 22.03 | 45.81 | |||||||||||||
1963 | 6.45 | 17.04 | 36.90 | 50.43 | 58.92 | 72.57 | 73.42 | 70.00 | 64.48 | 60.26 | 39.98 | 12.73 | 46.93 | |||||||||||||
1964 | 22.92 | 26.34 | 27.66 | 49.13 | 62.85 | 70.40 | 75.55 | 68.11 | 61.17 | 49.98 | 35.10 | 16.11 | 47.11 | |||||||||||||
1965 | 11.32 | 13.61 | 18.98 | 43.50 | 61.19 | 68.67 | 72.34 | 69.27 | 54.80 | 52.89 | 34.43 | 29.16 | 44.18 | |||||||||||||
1966 | 4.69 | 16.57 | 38.76 | 43.22 | 56.42 | 69.88 | 75.98 | 68.15 | 61.17 | 50.37 | 32.12 | 20.44 | 44.81 | |||||||||||||
1967 | 17.23 | 13.18 | 34.60 | 47.93 | 55.39 | 67.88 | a | 70.68 | 68.16 | 61.43 | 48.74 | 33.40 | 24.11 | 45.23 | ||||||||||||
1968 | 17.10 | 18.02 | ----- | z | 51.57 | 55.56 | 70.08 | 71.98 | 71.26 | 61.38 | 52.50 | 34.88 | 18.58 | 47.54 | a | |||||||||||
1969 | 10.00 | 20.77 | 23.82 | 49.98 | 61.82 | 62.85 | 73.85 | 73.16 | 63.57 | 47.52 | 34.75 | 19.97 | a | 45.17 | ||||||||||||
1970 | 6.16 | 16.98 | 26.32 | 47.42 | 61.60 | 71.86 | a | 74.50 | 71.84 | 62.85 | 50.26 | 33.30 | 18.74 | 45.15 | ||||||||||||
1971 | 8.97 | 18.88 | 30.00 | 49.17 | 57.32 | 73.30 | 69.47 | 70.65 | 63.37 | 54.13 | 35.00 | 20.02 | 45.85 | |||||||||||||
1972 | 8.61 | 13.90 | 30.11 | 44.60 | 62.97 | 68.25 | 71.19 | 71.24 | 60.98 | 47.13 | 33.63 | 13.45 | 43.84 | |||||||||||||
1973 | 19.02 | 24.32 | 41.52 | 46.38 | 57.37 | 71.52 | 73.84 | 74.02 | 62.38 | 57.00 | 36.47 | 18.34 | 48.51 | |||||||||||||
1974 | 14.18 | 20.23 | 33.50 | 50.05 | 57.06 | 67.82 | 77.29 | 68.42 | 59.70 | 52.89 | 35.68 | 24.81 | 46.80 | |||||||||||||
1975 | 16.45 | 16.88 | 24.68 | 41.30 | 62.95 | 69.38 | 76.23 | 72.53 | 59.27 | 54.34 | 37.65 | 22.84 | 46.21 | |||||||||||||
1976 | 15.74 | 30.19 | 34.31 | 52.72 | 59.08 | 71.37 | 75.73 | 72.47 | 63.10 | 45.06 | 27.65 | 14.52 | 46.83 | |||||||||||||
1977 | 1.10 | 24.77 | 38.68 | 54.90 | 68.71 | 70.73 | 75.40 | 67.61 | 63.28 | 48.47 | 32.77 | 15.85 | 46.86 | |||||||||||||
1978 | 5.39 | 11.09 | 30.55 | 46.37 | 61.56 | 69.33 | 71.42 | 71.35 | 67.80 | 49.68 | 31.22 | 14.00 | 44.15 | |||||||||||||
1979 | 1.11 | 8.52 | 27.32 | 42.13 | 55.73 | 67.90 | 72.10 | 69.06 | 63.47 | 48.47 | 32.48 | 26.66 | 42.91 | |||||||||||||
1980 | 17.31 | 16.36 | 28.18 | 48.78 | 62.02 | a | 69.42 | 75.44 | 71.24 | 63.07 | 45.92 | a | 37.52 | 20.06 | 46.28 | |||||||||||
1981 | 18.63 | 24.45 | 38.45 | a | 51.38 | 58.31 | 68.05 | 72.95 | 69.68 | 60.93 | 47.26 | 38.60 | 17.57 | b | 47.19 | |||||||||||
1982 | 1.61 | i | 19.09 | e | 30.26 | f | 41.91 | b | 60.35 | e | 62.98 | e | 72.78 | b | 69.75 | e | 59.61 | g | 49.30 | d | 30.06 | f | 25.25 | e | 50.17 | d |
1983 | 20.43 | i | 27.29 | b | 33.54 | d | 42.48 | c | 57.66 | i | 68.04 | c | 77.47 | a | 77.52 | d | 64.04 | d | 51.19 | g | 36.40 | 4.64 | b | 47.93 | c | |
1984 | 14.68 | 28.68 | a | 27.69 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.28 | a | 50.58 | a | 31.91 | h | 16.03 | m | 35.38 | g | |
1985 | 8.28 | k | 15.56 | j | 36.22 | h | 49.36 | i | 59.84 | o | 62.38 | f | 68.84 | i | 62.24 | l | 54.79 | i | 42.95 | j | 23.52 | j | 5.83 | h | ----- | z |
1986 | 16.00 | j | 16.11 | i | 35.80 | k | 48.54 | g | 59.21 | j | 68.76 | i | 71.76 | h | 64.42 | l | 59.63 | k | 48.07 | i | 27.23 | j | 23.85 | h | ----- | z |
1987 | 22.61 | l | 31.50 | h | 37.98 | i | 53.80 | c | 64.61 | 72.83 | 76.39 | 68.74 | 62.97 | 44.50 | 38.75 | 24.58 | 56.35 | c | ||||||||
1988 | 7.55 | a | 11.14 | 33.78 | a | 45.50 | b | 65.97 | a | 75.62 | 75.45 | 74.45 | 62.73 | 43.19 | 33.45 | b | 20.40 | a | 45.77 | |||||||
1989 | 23.60 | b | 9.15 | b | 26.43 | a | 45.13 | 56.90 | a | 67.62 | a | 75.98 | a | 71.29 | 60.30 | 49.35 | a | 27.95 | a | 10.37 | 43.67 | |||||
1990 | 26.53 | 22.41 | 36.06 | 46.40 | 55.31 | 69.77 | 71.58 | 70.68 | 64.77 | 47.32 | 36.98 | 14.95 | 46.90 | |||||||||||||
1991 | 10.95 | a | 24.82 | 33.38 | a | 48.68 | 61.40 | 73.35 | 72.77 | 71.43 | a | 59.72 | 46.84 | 23.50 | 21.39 | 45.69 | ||||||||||
1992 | 21.85 | 27.74 | 32.50 | 42.18 | 60.03 | a | 65.76 | a | 65.16 | 65.66 | 59.42 | 48.23 | a | 30.98 | 20.24 | 44.98 | ||||||||||
1993 | 12.60 | a | 15.02 | a | 27.63 | a | 42.55 | a | 56.87 | a | 64.34 | b | 70.10 | 70.35 | a | 55.50 | 46.90 | 30.82 | 21.05 | 42.81 | ||||||
1994 | 4.27 | 10.11 | 33.32 | 44.83 | 60.15 | 69.55 | 68.72 | a | 66.53 | 63.38 | a | 52.81 | 37.70 | 24.56 | 44.66 | |||||||||||
1995 | 16.88 | a | 20.34 | 33.35 | 41.10 | 55.33 | a | 70.23 | 72.18 | 74.02 | 58.19 | a | 47.56 | 26.95 | 19.00 | a | 44.60 | |||||||||
1996 | 8.77 | 17.31 | 25.40 | 41.05 | 54.10 | 68.12 | 68.55 | 68.28 | a | 59.72 | 49.53 | 24.93 | 13.08 | 41.57 | ||||||||||||
1997 | 8.87 | 20.66 | 30.16 | 42.20 | 52.18 | a | 69.67 | a | 71.03 | 68.00 | b | 62.22 | 50.32 | 27.93 | 26.90 | a | 44.18 | |||||||||
1998 | 17.00 | b | 31.11 | 30.48 | 48.65 | 64.44 | 65.12 | 71.68 | 71.24 | 66.28 | a | 51.08 | 37.98 | 26.31 | 48.45 | |||||||||||
1999 | 11.82 | 28.30 | 33.55 | 47.48 | 59.84 | 67.23 | 74.47 | 69.32 | a | 59.95 | a | 47.98 | 42.08 | 25.18 | 47.27 | |||||||||||
2000 | 14.94 | 27.33 | 40.45 | a | 46.28 | 59.90 | 65.87 | 70.82 | 70.15 | 59.61 | b | 52.56 | 30.53 | 6.40 | 45.40 | |||||||||||
2001 | 18.16 | 9.93 | 24.97 | 46.39 | b | 59.47 | 68.05 | a | 74.02 | 71.69 | 59.28 | a | 48.10 | 46.28 | 27.79 | 46.18 | ||||||||||
2002 | 23.58 | 26.63 | a | 23.97 | 42.94 | c | 53.84 | 70.13 | 75.42 | 68.77 | 62.83 | 42.23 | 32.87 | 26.50 | 45.81 | |||||||||||
2003 | 14.89 | 15.48 | 30.26 | 47.52 | 55.97 | 66.30 | 71.66 | b | 72.31 | 60.60 | 50.21 | 31.97 | 24.40 | 45.13 | ||||||||||||
2004 | 13.26 | 19.57 | 36.42 | 48.03 | 55.76 | 63.77 | 69.29 | 64.02 | 65.95 | a | 50.67 | a | 38.17 | 23.55 | 45.70 | |||||||||||
2005 | 14.77 | 26.02 | 29.95 | 50.65 | 54.74 | 71.15 | 74.05 | 69.28 | a | 65.02 | 50.91 | b | 37.12 | a | 17.37 | 46.75 | ||||||||||
2006 | 28.06 | 18.46 | 31.74 | 51.25 | 59.45 | 68.36 | a | 74.44 | 70.77 | 58.57 | 46.13 | 35.48 | 28.16 | 47.57 | ||||||||||||
2007 | 18.42 | 11.61 | 35.76 | 45.17 | 62.81 | 69.92 | 72.76 | 70.08 | 63.15 | 53.76 | 34.73 | 15.34 | 46.12 | |||||||||||||
2008 | 10.71 | 14.41 | b | 27.69 | 41.84 | a | 56.03 | 66.29 | a | 71.98 | 69.05 | 62.63 | 48.94 | 34.53 | 13.53 | 43.14 | ||||||||||
2009 | 7.37 | 21.63 | b | 30.98 | 45.40 | 57.65 | 64.83 | 66.74 | 66.90 | 63.78 | 42.57 | a | 41.36 | a | 16.26 | 43.79 | ||||||||||
2010 | 9.32 | 13.57 | 36.02 | 53.17 | 58.15 | 67.00 | 73.11 | 73.65 | 59.25 | ----- | z | ----- | z | ----- | z | 49.25 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.75 | 19.19 | 31.13 | 46.80 | 59.27 | 68.60 | 72.80 | 70.60 | 61.60 | 49.77 | 34.21 | 19.92 | 45.62 | |||||||||||||
S.D. | 6.27 | 5.94 | 4.93 | 3.82 | 3.47 | 2.79 | 2.79 | 2.57 | 2.71 | 3.60 | 4.57 | 5.77 | 1.47 | |||||||||||||
SKEW | 0.15 | 0.19 | -0.10 | 0.25 | 0.33 | -0.03 | -0.39 | 0.15 | -0.41 | 0.24 | -0.15 | -0.38 | -0.50 | |||||||||||||
MAX | 28.06 | 31.11 | 41.52 | 54.90 | 68.71 | 75.62 | 77.60 | 77.52 | 67.80 | 60.26 | 46.28 | 30.77 | 48.51 | |||||||||||||
MIN | 1.10 | 8.52 | 18.98 | 41.05 | 52.18 | 62.85 | 65.16 | 64.02 | 54.80 | 42.23 | 23.50 | 4.64 | 41.57 | |||||||||||||
YRS | 51 | 53 | 51 | 53 | 52 | 52 | 53 | 53 | 53 | 52 | 51 | 52 | 47 |