YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | 18.48 | 27.82 | 35.90 | 64.93 | 63.94 | 70.87 | 76.42 | 79.61 | 68.53 | 60.48 | 36.57 | 23.68 | 52.27 | |||||||||||||
1916 | 5.81 | 15.79 | 30.20 | a | 50.24 | a | 65.61 | 71.10 | 86.68 | 80.00 | 72.40 | 55.55 | ----- | z | 41.76 | n | 53.34 | b | ||||||||
1917 | 12.14 | b | ----- | z | 38.74 | 51.63 | 72.52 | 81.62 | a | 90.48 | 86.39 | 75.17 | a | 46.16 | 48.07 | 14.96 | h | 60.29 | b | |||||||
1918 | 9.17 | a | 25.04 | a | 50.74 | 59.27 | 69.65 | 77.47 | 84.03 | 80.29 | 65.73 | 59.53 | a | 37.13 | 23.06 | 53.43 | ||||||||||
1919 | 22.37 | a | 14.54 | 30.71 | 53.07 | 69.58 | 79.23 | 83.80 | a | 82.45 | 74.83 | 48.80 | a | 25.31 | d | 17.17 | a | 50.15 | ||||||||
1920 | 10.10 | 24.76 | 35.19 | 45.83 | a | 71.23 | 73.80 | 83.68 | 85.84 | 76.37 | 66.19 | ----- | z | ----- | z | 57.30 | b | |||||||||
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 | ----- | 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 | 75.30 | 85.07 | b | 78.10 | 68.50 | 58.90 | 37.77 | 10.29 | 59.13 | e | ||||||
1965 | 8.45 | 19.32 | 25.84 | 49.93 | 66.13 | a | 74.87 | 78.97 | 79.00 | 56.17 | 59.06 | 34.83 | 29.23 | 48.48 | ||||||||||||
1966 | 2.16 | 17.14 | 41.48 | f | 45.33 | 65.97 | 77.20 | 84.52 | 77.45 | 72.43 | 58.35 | 31.43 | 20.19 | 50.20 | a | |||||||||||
1967 | 18.90 | 16.21 | 37.42 | 47.17 | 63.65 | 75.30 | 84.58 | 84.52 | 75.30 | 55.29 | 37.73 | 23.68 | 51.65 | |||||||||||||
1968 | 16.03 | 18.93 | 45.52 | 56.70 | 65.10 | 74.73 | 81.19 | 79.42 | 70.37 | 57.77 | 37.93 | 16.42 | 51.68 | |||||||||||||
1969 | 6.55 | 23.89 | 28.68 | 55.33 | 71.10 | 70.53 | 80.13 | 87.71 | 73.03 | 49.03 | 39.70 | 24.48 | 50.85 | |||||||||||||
1970 | 9.52 | 24.00 | 27.68 | 49.57 | 65.00 | 81.27 | 87.15 | k | 86.32 | 74.00 | 57.48 | 33.90 | 19.06 | 47.98 | a | |||||||||||
1971 | 7.48 | 21.39 | 34.84 | 58.40 | 68.00 | 78.13 | 78.81 | 85.13 | 72.27 | 57.58 | 34.43 | 20.45 | 51.41 | |||||||||||||
1972 | 13.39 | 15.00 | 33.87 | 49.53 | 71.32 | 80.57 | 80.39 | 83.06 | 69.13 | 54.65 | 34.37 | 13.16 | 49.87 | |||||||||||||
1973 | 22.97 | 29.68 | 42.39 | 55.40 | 70.74 | 79.73 | 85.00 | 86.19 | 67.70 | 61.35 | 32.73 | 16.29 | 54.18 | |||||||||||||
1974 | 10.26 | 21.04 | 29.58 | 52.33 | 62.90 | 80.37 | 88.90 | a | 77.97 | 70.97 | 62.68 | 37.80 | 29.67 | a | 52.04 | |||||||||||
1975 | 22.87 | 19.43 | 29.63 | a | 42.20 | 70.26 | 77.43 | 87.00 | 82.26 | 70.57 | 61.10 | 41.30 | 24.26 | 52.36 | ||||||||||||
1976 | 17.83 | b | 32.00 | a | 35.13 | 59.67 | 74.58 | 82.17 | 86.33 | a | 90.39 | 80.48 | a | 54.39 | 37.00 | 18.65 | 55.72 | |||||||||
1977 | 7.39 | 29.11 | a | 42.71 | 65.30 | 79.32 | 79.27 | 84.87 | 75.71 | 66.90 | 59.74 | 33.53 | 13.45 | 53.11 | ||||||||||||
1978 | 7.00 | a | 13.85 | a | 30.14 | i | 53.33 | 72.41 | d | 78.90 | 83.20 | a | 84.74 | 77.37 | 60.48 | 33.83 | 16.87 | a | 52.91 | a | ||||||
1979 | 3.55 | 6.21 | 29.90 | b | 42.67 | 62.42 | 77.87 | 83.57 | a | 79.27 | a | 78.53 | 56.71 | 32.93 | 31.19 | 48.73 | ||||||||||
1980 | 17.03 | a | 19.93 | b | 32.20 | a | 66.90 | 79.87 | 81.28 | a | 87.53 | n | 80.48 | 69.20 | 53.13 | 42.86 | a | 24.40 | a | 51.57 | a | |||||
1981 | 24.19 | 32.67 | a | 47.68 | 62.87 | 70.84 | 75.31 | d | 84.96 | c | 85.13 | 72.47 | 56.00 | 46.43 | ----- | z | 59.87 | a | ||||||||
1982 | 1.96 | d | 18.25 | 30.42 | 53.57 | 67.94 | 71.73 | 83.15 | e | 82.23 | 72.03 | 54.16 | 30.63 | 26.84 | 49.41 | |||||||||||
1983 | 24.32 | 28.12 | b | 32.54 | c | 49.89 | b | 66.00 | b | 78.14 | a | 85.87 | 90.61 | 70.37 | 52.68 | 33.73 | 6.96 | c | 51.60 | |||||||
1984 | 22.92 | e | ----- | z | 30.29 | 56.70 | 69.19 | 77.90 | 85.97 | 88.94 | 70.10 | 56.00 | a | 38.63 | 17.87 | a | 55.86 | a | ||||||||
1985 | 18.64 | c | 24.77 | b | 42.32 | 62.83 | 75.30 | a | 73.48 | a | 86.73 | e | 77.26 | 64.45 | a | 56.13 | 26.04 | b | 13.93 | d | 51.82 | |||||
1986 | 22.94 | 19.65 | h | 44.40 | a | 53.70 | 71.57 | a | 78.41 | c | 83.04 | e | 78.55 | 66.90 | 57.47 | a | 30.62 | a | 29.87 | a | 56.13 | a | ||||
1987 | 26.17 | a | 33.11 | 35.17 | a | 67.89 | b | 74.71 | 83.30 | c | 84.94 | 78.80 | a | 72.97 | 55.74 | 43.50 | 27.26 | 56.96 | ||||||||
1988 | 15.17 | b | 19.75 | a | 39.16 | 62.90 | a | 78.77 | 90.34 | a | 91.24 | b | 85.97 | a | 70.70 | 54.77 | a | 33.33 | 24.32 | 55.54 | ||||||
1989 | 21.39 | c | 12.23 | b | 28.10 | a | 52.00 | 72.29 | 77.50 | 89.30 | a | 84.23 | 72.57 | 59.90 | a | 33.30 | 15.58 | 51.53 | ||||||||
1990 | 32.24 | b | 29.29 | 41.94 | 56.97 | a | 68.00 | 78.63 | 79.75 | g | 84.58 | 75.10 | 59.19 | 41.47 | 18.94 | 53.30 | a | |||||||||
1991 | 16.74 | 32.00 | 39.03 | 59.70 | 70.74 | 78.77 | 81.84 | 85.52 | 70.62 | a | 53.26 | 29.97 | 26.29 | 53.71 | ||||||||||||
1992 | 25.35 | 30.31 | 40.58 | 53.31 | d | 75.67 | a | 74.83 | 73.86 | b | 76.53 | a | 69.76 | a | 57.35 | 29.17 | 17.50 | a | 52.02 | |||||||
1993 | 17.11 | c | 17.64 | 34.24 | b | 54.17 | 69.03 | 71.77 | 74.78 | d | 78.63 | a | 67.47 | 56.32 | 33.80 | 22.06 | 49.75 | |||||||||
1994 | 2.20 | a | 12.11 | 37.58 | 56.37 | 73.55 | 77.27 | 78.73 | a | 78.52 | 72.57 | b | 57.77 | a | 40.48 | c | 26.86 | b | 51.17 | |||||||
1995 | 17.06 | 22.39 | 32.48 | 47.87 | 66.07 | a | 81.77 | 80.65 | 83.06 | 71.67 | 52.45 | 29.36 | b | 16.40 | a | 50.10 | ||||||||||
1996 | 6.97 | 20.46 | a | 25.45 | b | 46.73 | 65.00 | a | 80.33 | 78.17 | a | 82.97 | 69.37 | 56.20 | a | 22.60 | 10.73 | a | 47.08 | |||||||
1997 | 9.10 | b | 23.79 | 30.03 | b | 48.50 | b | 66.65 | 81.57 | 80.13 | 80.10 | 75.31 | a | 60.56 | d | 29.77 | 30.16 | 51.30 | ||||||||
1998 | 16.03 | 31.07 | 31.77 | 62.43 | 74.52 | 73.83 | a | 84.45 | 85.57 | a | 77.70 | 56.74 | 33.10 | 23.10 | 54.19 | |||||||||||
1999 | 12.68 | 29.00 | 37.77 | 54.55 | a | 68.37 | a | 78.77 | 82.04 | g | 81.03 | a | 66.50 | 56.87 | a | 49.43 | 33.65 | 51.69 | a | |||||||
2000 | 19.53 | a | 30.89 | a | 44.90 | 52.37 | 69.84 | 73.03 | 81.00 | g | 80.89 | c | 69.67 | 58.26 | 31.90 | 9.41 | b | 49.15 | a | |||||||
2001 | 24.77 | r | 11.11 | i | 32.35 | 51.73 | 69.87 | a | 75.60 | 84.67 | g | 83.41 | b | 70.07 | 53.17 | a | 48.28 | a | 24.71 | 56.58 | c | |||||
2002 | 23.03 | a | 32.96 | 26.90 | 48.30 | 62.90 | a | 79.73 | 82.20 | f | 78.03 | 73.68 | e | 43.39 | 35.97 | 27.19 | 48.37 | a | ||||||||
2003 | 16.48 | 16.56 | a | 33.77 | a | 56.67 | 65.23 | 75.00 | b | 79.81 | e | 84.03 | 69.53 | 60.35 | 30.43 | g | 27.32 | 53.16 | a | |||||||
2004 | 10.10 | a | 21.00 | 36.07 | a | 55.90 | 61.55 | 71.20 | e | 78.92 | e | 72.23 | 70.20 | 55.03 | a | 43.37 | 24.58 | 50.01 | ||||||||
2005 | 12.60 | a | 25.39 | 35.45 | 61.17 | 63.20 | a | 75.96 | b | 82.00 | h | 77.05 | k | 72.89 | b | 56.93 | c | 37.52 | c | 22.84 | 46.40 | b | ||||
2006 | 28.90 | 18.76 | c | 32.28 | f | 60.75 | b | 69.96 | e | 79.21 | b | 90.43 | j | 81.39 | 69.14 | a | 51.96 | e | 38.64 | b | 31.86 | c | 53.06 | b | ||
2007 | 18.17 | b | 12.32 | c | 37.14 | b | 51.96 | b | 69.31 | e | 78.17 | a | 84.50 | g | 78.19 | d | 71.27 | 58.52 | 39.37 | c | 17.54 | c | 48.36 | a | ||
2008 | 13.63 | d | 14.62 | 30.92 | f | 50.88 | d | 66.85 | d | 71.68 | h | 80.95 | j | 81.31 | e | 69.84 | e | 56.74 | d | 37.35 | d | 14.16 | f | 48.90 | d | |
2009 | 9.77 | e | 19.33 | a | 27.45 | b | 47.63 | c | 65.17 | h | 72.88 | e | 77.54 | r | 77.74 | d | 78.71 | f | 47.00 | i | 49.12 | e | 17.35 | k | 43.42 | e |
2010 | 10.61 | h | 16.48 | e | 40.82 | i | 62.21 | f | 64.09 | i | 74.48 | g | 82.27 | i | 84.69 | r | 64.50 | t | ----- | z | ----- | z | ----- | z | 16.48 | k |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 15.10 | 22.09 | 35.15 | 54.41 | 69.28 | 77.32 | 83.10 | 81.92 | 71.19 | 56.44 | 36.29 | 21.51 | 51.74 | |||||||||||||
S.D. | 7.42 | 6.72 | 6.08 | 6.21 | 4.45 | 3.81 | 4.01 | 3.92 | 3.98 | 4.02 | 6.09 | 6.47 | 2.22 | |||||||||||||
SKEW | 0.10 | -0.01 | 0.54 | 0.25 | 0.42 | 0.46 | -0.23 | 0.14 | -0.67 | -0.82 | 0.30 | -0.24 | 0.33 | |||||||||||||
MAX | 32.24 | 33.11 | 50.74 | 67.89 | 79.87 | 90.34 | 91.24 | 90.61 | 80.48 | 66.19 | 49.43 | 33.65 | 56.96 | |||||||||||||
MIN | 1.96 | 6.21 | 25.45 | 42.20 | 61.55 | 70.53 | 73.86 | 72.23 | 56.17 | 43.39 | 22.60 | 6.96 | 47.08 | |||||||||||||
YRS | 50 | 48 | 47 | 51 | 50 | 51 | 40 | 51 | 51 | 51 | 49 | 46 | 30 |