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 | 31.83 | h | ----- | z |
1955 | 24.93 | a | 27.15 | b | 40.00 | 67.83 | 78.06 | 79.63 | 89.26 | 88.06 | 77.83 | 63.93 | a | 35.72 | a | 22.77 | 57.93 | |||||||||
1956 | 22.58 | 27.24 | 36.45 | 54.80 | 70.94 | 82.46 | f | 80.07 | a | 82.21 | b | 73.30 | 69.42 | 41.67 | 33.42 | 53.83 | a | |||||||||
1957 | 21.84 | 32.46 | 41.03 | 60.43 | 69.94 | 79.47 | 88.19 | 81.03 | 71.30 | 58.87 | 40.83 | 35.61 | c | 56.75 | ||||||||||||
1958 | 31.90 | a | 26.68 | 42.27 | a | 60.97 | 75.23 | 75.96 | b | 81.71 | 84.29 | 75.43 | 67.39 | 48.90 | 27.13 | 58.15 | ||||||||||
1959 | 22.40 | a | 26.50 | 44.32 | 61.33 | 72.19 | 82.30 | 85.97 | 86.16 | 73.43 | 54.03 | 34.73 | 38.06 | 56.79 | ||||||||||||
1960 | 26.74 | 28.38 | 32.35 | 59.00 | 69.61 | 77.17 | 84.19 | 83.19 | 72.43 | 64.52 | 47.60 | 30.52 | 56.31 | |||||||||||||
1961 | 26.43 | a | 36.75 | 43.84 | 50.97 | a | 69.06 | 82.83 | 82.71 | 84.19 | 71.83 | 65.48 | 42.90 | 26.13 | 56.93 | |||||||||||
1962 | 21.71 | 24.39 | 35.23 | 56.17 | 73.90 | 78.87 | 80.19 | 82.87 | 70.90 | 64.45 | 48.47 | 31.03 | 55.68 | |||||||||||||
1963 | 15.74 | 28.04 | 46.65 | 62.27 | 70.29 | 83.87 | 83.81 | 80.97 | 76.13 | 72.97 | 50.40 | 21.81 | 57.74 | |||||||||||||
1964 | 33.74 | 38.90 | 38.77 | 60.80 | 75.39 | 83.37 | 87.58 | 80.35 | 72.43 | 62.26 | 45.03 | 25.71 | 58.69 | |||||||||||||
1965 | 22.81 | 25.93 | 29.35 | 52.80 | 73.26 | 80.30 | 83.26 | 80.13 | 62.87 | 64.94 | 44.30 | 36.29 | 54.69 | |||||||||||||
1966 | 14.74 | 27.46 | 49.29 | 52.50 | 69.55 | 82.00 | 87.16 | 79.61 | 73.80 | 62.68 | 40.80 | 27.61 | 55.60 | |||||||||||||
1967 | 27.26 | 24.93 | 43.97 | 58.20 | 67.55 | 78.28 | a | 82.58 | 80.65 | 75.07 | 60.81 | 42.53 | 33.32 | 56.26 | ||||||||||||
1968 | 26.55 | 28.31 | ----- | z | 64.13 | 67.65 | 82.10 | 83.00 | 82.39 | 72.23 | 63.00 | 42.20 | 26.58 | 58.01 | a | |||||||||||
1969 | 19.10 | 29.50 | 33.81 | 61.30 | 73.87 | 74.03 | 84.58 | 85.35 | 75.43 | 57.00 | 43.23 | 27.74 | 55.41 | |||||||||||||
1970 | 16.16 | 29.43 | 35.19 | 59.13 | 73.74 | 84.41 | a | 86.55 | 83.68 | 73.97 | 59.74 | 40.40 | 28.42 | 55.90 | ||||||||||||
1971 | 17.94 | 27.64 | 38.68 | 62.40 | 71.23 | 84.40 | 81.35 | 83.68 | 75.53 | 64.29 | 42.73 | 28.16 | 56.50 | |||||||||||||
1972 | 19.03 | 24.21 | 39.77 | 55.60 | 74.68 | 81.23 | 81.68 | 81.48 | 72.07 | 57.71 | 39.13 | 21.74 | 54.03 | |||||||||||||
1973 | 28.16 | 32.71 | 49.29 | 56.30 | 69.45 | 83.83 | 84.58 | 84.84 | 72.10 | 67.23 | 44.27 | 25.39 | 58.18 | |||||||||||||
1974 | 23.90 | 30.25 | 42.00 | 61.43 | 67.45 | 80.37 | 89.52 | 79.48 | 73.43 | 64.52 | 42.97 | 31.71 | 57.25 | |||||||||||||
1975 | 26.03 | 26.21 | 34.13 | 48.83 | 75.48 | 80.43 | 88.45 | 83.68 | 71.23 | 68.10 | 47.37 | 29.77 | 56.64 | |||||||||||||
1976 | 26.61 | 40.28 | 44.19 | 66.00 | 72.81 | 85.00 | 89.77 | 85.81 | 79.20 | 57.97 | 38.73 | 26.39 | 59.40 | |||||||||||||
1977 | 11.94 | 36.64 | 48.55 | 68.20 | 82.55 | 83.90 | 87.87 | 79.26 | 74.90 | 60.13 | 42.60 | 24.23 | 58.40 | |||||||||||||
1978 | 16.81 | 23.25 | 42.87 | 57.40 | 74.84 | 82.70 | 83.10 | 84.42 | 81.67 | 62.23 | 41.37 | 24.42 | 56.26 | |||||||||||||
1979 | 11.74 | 20.39 | 36.65 | 52.63 | 69.39 | 81.20 | 84.23 | 79.74 | 76.37 | 60.52 | 41.13 | 36.32 | 54.19 | |||||||||||||
1980 | 26.77 | 26.00 | 39.16 | 62.60 | 77.43 | a | 82.77 | 89.61 | 83.10 | 75.97 | 57.77 | a | 48.67 | 29.65 | 58.29 | |||||||||||
1981 | 31.71 | 35.86 | 52.63 | a | 64.23 | 72.00 | 81.00 | 84.29 | 79.84 | 73.60 | 58.03 | 49.07 | 26.80 | a | 59.09 | |||||||||||
1982 | 10.96 | h | 27.83 | d | 37.96 | d | 54.07 | a | 70.52 | b | 76.00 | e | 83.38 | b | 80.38 | e | 68.91 | g | 58.85 | d | 37.62 | f | 33.18 | c | 58.02 | c |
1983 | 28.12 | g | 33.42 | b | 40.70 | d | 52.22 | c | 69.17 | g | 79.48 | c | 89.30 | a | 90.41 | d | 74.93 | c | 60.37 | d | 42.27 | 13.41 | b | 57.65 | b | |
1984 | 24.29 | 37.41 | 36.43 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.80 | 60.55 | 43.53 | 29.23 | 43.03 | e | ||||||
1985 | 20.74 | 25.29 | 46.57 | a | 63.13 | 76.03 | 76.73 | 84.97 | 76.68 | 69.00 | 58.61 | 33.53 | 19.58 | 54.24 | ||||||||||||
1986 | 28.27 | a | 24.39 | 45.07 | a | 60.43 | 70.77 | 81.20 | 83.48 | 77.35 | 70.50 | 60.55 | 37.93 | 33.10 | a | 56.09 | ||||||||||
1987 | 31.35 | 44.54 | 49.13 | 68.20 | 79.00 | 87.03 | 87.68 | 80.26 | 75.57 | 56.48 | 48.07 | 31.48 | 61.57 | |||||||||||||
1988 | 18.57 | a | 22.55 | 44.19 | 59.13 | 81.03 | 90.33 | 89.77 | 87.42 | 76.90 | 57.26 | 42.00 | 29.84 | 58.25 | ||||||||||||
1989 | 33.52 | 21.14 | 35.35 | 57.73 | 71.29 | 80.50 | 88.03 | 83.77 | 73.43 | 65.45 | 38.53 | 19.77 | 55.71 | |||||||||||||
1990 | 36.48 | 34.29 | 46.81 | 59.77 | 67.84 | 82.03 | 82.87 | 81.52 | 76.93 | 60.77 | 48.17 | 25.23 | 58.56 | |||||||||||||
1991 | 20.23 | 35.43 | 43.45 | 60.50 | 70.29 | 84.43 | 83.84 | 82.71 | 70.67 | 59.26 | 31.03 | 30.10 | 55.99 | |||||||||||||
1992 | 29.74 | 33.97 | 41.94 | 51.73 | 74.10 | 79.03 | a | 75.23 | 77.58 | 72.67 | 59.81 | 36.07 | 27.71 | 54.96 | ||||||||||||
1993 | 22.87 | 23.82 | 36.81 | 53.53 | 66.97 | 75.30 | 79.77 | 81.39 | 66.47 | 59.19 | 39.33 | 27.65 | 52.76 | |||||||||||||
1994 | 13.87 | 21.46 | 43.55 | 57.63 | 73.94 | 80.10 | 78.90 | 76.84 | 74.27 | 62.84 | 47.10 | 32.68 | 55.26 | |||||||||||||
1995 | 25.29 | 30.64 | 42.45 | 50.67 | 67.23 | 81.30 | 83.29 | 84.23 | 69.90 | a | 57.45 | 34.33 | 27.73 | a | 54.54 | |||||||||||
1996 | 18.87 | 27.24 | 35.55 | 52.73 | 63.35 | 78.17 | 79.00 | 78.83 | a | 69.90 | 61.61 | 33.10 | 20.71 | 51.59 | ||||||||||||
1997 | 18.71 | 29.86 | 39.29 | 54.07 | 64.13 | 81.93 | 79.97 | 77.55 | 73.40 | 62.94 | 34.73 | 33.48 | 54.17 | |||||||||||||
1998 | 24.67 | a | 37.39 | 38.10 | 60.23 | 76.61 | 75.73 | 81.55 | 80.68 | 80.07 | a | 61.48 | 47.60 | 36.90 | 58.42 | |||||||||||
1999 | 20.65 | 37.21 | 44.77 | 57.40 | 69.87 | 77.27 | 84.71 | 78.55 | 73.27 | 61.23 | 54.67 | 35.52 | 57.93 | |||||||||||||
2000 | 25.94 | 36.62 | 51.74 | 57.93 | 71.23 | 76.83 | 79.87 | 80.06 | 73.67 | 64.55 | 38.33 | 15.10 | 55.99 | |||||||||||||
2001 | 27.58 | 21.25 | 34.39 | 57.93 | 70.00 | 78.47 | 85.10 | 83.10 | 69.72 | a | 59.71 | 58.07 | 36.26 | 56.80 | ||||||||||||
2002 | 33.61 | 36.96 | a | 32.97 | 55.43 | 65.45 | 80.80 | 85.74 | 78.55 | 74.23 | 51.55 | 42.03 | 35.77 | 56.09 | ||||||||||||
2003 | 24.52 | 26.61 | 41.81 | 59.47 | 67.26 | 77.23 | 81.77 | 83.65 | 73.67 | 63.26 | 40.57 | 32.19 | 56.00 | |||||||||||||
2004 | 22.19 | 27.97 | 45.52 | 62.90 | 67.32 | 73.97 | 78.97 | 74.55 | 77.43 | 60.74 | 47.63 | 32.52 | 55.98 | |||||||||||||
2005 | 22.71 | 36.07 | 40.13 | 62.20 | 64.26 | 81.30 | 84.00 | 80.29 | 76.33 | 63.14 | b | 47.28 | a | 24.45 | 56.85 | |||||||||||
2006 | 34.19 | 28.29 | 40.52 | 62.77 | 70.19 | 78.83 | a | 85.39 | 80.19 | 68.67 | 57.81 | 46.50 | 36.00 | 57.44 | ||||||||||||
2007 | 26.68 | 20.25 | 45.39 | 55.90 | 75.16 | 80.90 | 84.06 | 79.00 | 75.70 | 63.77 | 43.93 | 23.42 | 56.18 | |||||||||||||
2008 | 20.39 | 23.48 | b | 37.29 | 52.17 | 67.65 | 77.28 | a | 82.77 | 80.61 | 74.00 | 60.32 | 43.03 | 23.58 | 53.55 | |||||||||||
2009 | 18.55 | 31.42 | b | 40.48 | 57.23 | 70.26 | 75.23 | 77.03 | 77.16 | 75.37 | 50.03 | a | 51.79 | a | 24.00 | 54.05 | ||||||||||
2010 | 17.90 | 24.00 | 45.87 | 66.60 | 70.23 | 76.60 | 83.10 | 84.23 | 69.93 | ----- | z | ----- | z | ----- | z | 59.83 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.66 | 29.40 | 41.18 | 58.58 | 71.47 | 80.29 | 83.98 | 81.60 | 73.47 | 61.26 | 42.94 | 28.50 | 56.40 | |||||||||||||
S.D. | 5.87 | 5.72 | 5.18 | 4.76 | 4.14 | 3.34 | 3.42 | 3.11 | 3.28 | 4.08 | 5.51 | 5.56 | 1.85 | |||||||||||||
SKEW | 0.10 | 0.48 | 0.05 | 0.07 | 0.42 | 0.31 | -0.14 | 0.33 | -0.36 | 0.01 | 0.16 | -0.42 | -0.01 | |||||||||||||
MAX | 36.48 | 44.54 | 52.63 | 68.20 | 82.55 | 90.33 | 89.77 | 90.41 | 81.67 | 72.97 | 58.07 | 38.06 | 61.57 | |||||||||||||
MIN | 11.74 | 20.25 | 29.35 | 48.83 | 63.35 | 73.97 | 75.23 | 74.55 | 62.87 | 50.03 | 31.03 | 13.41 | 51.59 | |||||||||||||
YRS | 54 | 56 | 55 | 55 | 54 | 54 | 55 | 55 | 55 | 55 | 54 | 55 | 50 |