YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1909 | ----- | z | ----- | z | ----- | z | ----- | z | 57.79 | x | 67.97 | 73.65 | a | 77.32 | c | 64.23 | 49.94 | 35.08 | e | 12.29 | 54.35 | e | ||||
1910 | 19.63 | a | 15.89 | a | 48.78 | b | 52.68 | 54.16 | b | 73.62 | 76.16 | 70.59 | c | 63.15 | 54.60 | ----- | z | 26.79 | 50.55 | a | ||||||
1911 | 23.50 | 24.27 | b | 42.47 | b | 45.02 | 60.29 | 76.48 | d | 71.57 | i | 68.67 | e | 62.59 | b | 45.41 | c | 26.57 | c | 22.20 | i | 47.53 | b | |||
1912 | 10.05 | c | 24.83 | 24.27 | 50.15 | 57.15 | 67.81 | a | 73.04 | d | 69.04 | c | 55.57 | a | 50.08 | 41.19 | a | 29.19 | d | 46.03 | ||||||
1913 | 19.62 | a | 14.60 | d | 26.53 | 49.09 | a | 54.92 | 68.62 | i | 76.04 | f | 77.43 | a | 64.45 | 45.73 | 42.62 | a | 27.42 | 42.24 | b | |||||
1914 | 26.10 | b | 12.30 | 34.17 | d | 46.52 | 58.37 | a | 69.78 | 78.35 | 72.02 | a | 66.90 | e | 52.60 | 41.50 | e | 16.24 | 47.90 | |||||||
1915 | 17.10 | b | 24.38 | c | 21.96 | d | 54.30 | 52.67 | b | 62.33 | d | 67.03 | 67.03 | 59.32 | b | 53.71 | b | 37.88 | b | 27.10 | a | 45.40 | ||||
1916 | 8.84 | c | 25.12 | a | 38.85 | a | 45.91 | a | 56.13 | a | 62.62 | a | 78.67 | a | 71.85 | a | 61.52 | a | 47.92 | a | 36.46 | d | 13.92 | a | 45.65 | |
1917 | 21.02 | c | 14.70 | c | 29.03 | a | 42.21 | a | 52.48 | c | 65.33 | 77.03 | o | 70.22 | b | ----- | z | ----- | z | 44.88 | 16.36 | b | 39.58 | c | ||
1918 | 10.79 | c | 23.45 | 43.83 | d | 43.56 | d | 58.21 | c | 70.36 | l | 72.82 | f | 76.03 | o | 60.34 | h | 53.43 | j | 36.85 | c | 29.59 | h | 36.11 | f | |
1919 | 35.91 | o | 20.07 | h | 31.60 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.60 | k |
1920 | ----- | z | ----- | z | 34.86 | b | 38.33 | 55.95 | b | 65.98 | 73.97 | 72.29 | 64.65 | 54.11 | 32.80 | c | 26.77 | a | 51.97 | b | ||||||
1921 | 31.18 | 32.87 | a | 40.16 | 47.92 | 58.27 | 74.12 | a | 78.27 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.42 | f | ||||
1922 | 13.34 | 10.46 | 34.61 | 46.43 | a | 57.56 | 69.57 | a | 70.52 | a | 76.05 | 67.22 | ----- | z | ----- | z | ----- | z | 49.53 | c | ||||||
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 | 71.10 | e | 73.31 | 71.95 | 67.13 | 49.35 | h | 34.62 | 28.40 | 57.75 | f | |||||
1953 | 29.82 | 25.50 | 36.68 | a | 40.25 | 54.40 | 70.07 | 74.45 | 73.39 | 64.25 | 57.29 | 42.42 | 30.32 | 49.90 | ||||||||||||
1954 | 19.47 | 42.14 | 29.18 | 48.27 | 54.76 | 65.63 | 78.82 | 75.79 | 65.67 | 49.32 | 43.47 | 30.66 | 50.26 | |||||||||||||
1955 | 25.02 | 20.12 | 31.95 | 53.20 | 62.34 | 64.43 | 78.20 | a | 79.11 | 65.33 | 53.81 | 25.73 | 18.81 | 48.17 | ||||||||||||
1956 | 20.45 | 23.72 | 34.68 | 40.52 | 57.82 | a | 75.07 | a | 73.19 | 71.11 | 64.25 | 55.68 | 35.33 | 30.03 | 48.49 | |||||||||||
1957 | 11.44 | 27.59 | 33.66 | 43.18 | 56.18 | 65.05 | 76.19 | 73.19 | 61.18 | 49.87 | a | 36.67 | 35.18 | 47.45 | ||||||||||||
1958 | 30.84 | 21.11 | 30.47 | 46.00 | 62.85 | 64.17 | 68.42 | 74.92 | 66.28 | 52.24 | 37.75 | 25.34 | 48.37 | |||||||||||||
1959 | 18.60 | 20.79 | 38.55 | 45.20 | 56.05 | 71.73 | 74.87 | 77.98 | 61.32 | 45.82 | 28.52 | 32.50 | b | 47.66 | ||||||||||||
1960 | 22.58 | 18.24 | 26.16 | 48.58 | 57.42 | 65.10 | 77.15 | 74.95 | 64.47 | 53.40 | 37.27 | 24.34 | 47.47 | |||||||||||||
1961 | 26.27 | 31.38 | 39.55 | 42.48 | a | 56.21 | 69.72 | 73.23 | 77.39 | 59.40 | 51.82 | 36.37 | 23.35 | 48.93 | ||||||||||||
1962 | 19.61 | 22.64 | 26.84 | 50.25 | 60.03 | 65.87 | 70.68 | 73.35 | 63.23 | 54.50 | 41.70 | 29.19 | 48.16 | |||||||||||||
1963 | 13.13 | 29.93 | 42.24 | 47.83 | 58.98 | 70.45 | a | 77.13 | 75.23 | 68.12 | a | 61.37 | 41.02 | 21.24 | 50.56 | |||||||||||
1964 | 28.08 | 29.26 | 32.02 | a | 48.40 | 61.44 | 67.13 | 78.58 | 71.71 | 62.77 | 51.97 | 34.32 | 19.10 | 48.73 | ||||||||||||
1965 | 22.63 | 26.75 | 22.50 | 48.30 | 58.66 | 66.65 | 74.08 | 72.71 | 52.43 | 55.02 | 37.08 | 31.82 | 47.39 | |||||||||||||
1966 | 13.05 | 18.18 | 38.93 | b | 42.47 | 58.71 | 69.12 | 79.90 | 70.06 | 62.25 | 50.29 | 34.53 | 26.53 | 47.00 | ||||||||||||
1967 | 27.08 | 24.98 | 37.24 | 48.08 | 52.97 | 63.73 | 72.81 | 73.19 | 64.37 | 51.53 | 35.63 | 22.45 | 47.84 | |||||||||||||
1968 | 20.50 | 26.57 | 41.31 | 46.05 | 53.66 | 66.87 | 74.24 | 70.76 | 62.58 | 53.19 | 36.50 | 18.19 | 47.54 | |||||||||||||
1969 | 13.82 | 24.41 | 27.34 | 53.23 | 62.06 | 63.35 | 74.26 | 77.27 | 67.80 | 43.85 | 39.23 | 26.98 | 47.80 | |||||||||||||
1970 | 15.32 | 30.66 | 28.60 | 42.53 | 59.45 | 70.05 | 75.69 | 76.45 | 62.63 | 47.40 | 35.00 | 21.56 | 47.11 | |||||||||||||
1971 | 15.19 | 22.45 | 34.73 | 48.85 | 56.37 | a | 70.37 | 72.58 | 77.21 | 61.32 | 49.34 | 36.25 | 22.89 | 47.29 | ||||||||||||
1972 | 17.73 | 24.41 | 37.69 | 46.68 | 58.24 | 68.68 | 71.79 | 73.03 | 64.67 | 48.19 | 32.75 | 19.35 | 46.94 | |||||||||||||
1973 | 24.98 | 30.05 | ----- | z | 46.00 | 57.42 | 68.60 | 75.02 | 78.32 | 59.88 | a | 54.02 | 34.35 | 25.81 | 50.40 | a | ||||||||||
1974 | 23.82 | 32.02 | 39.75 | a | 49.67 | a | 57.82 | a | 69.40 | 81.50 | 70.48 | 60.43 | 54.82 | a | 38.93 | 29.02 | 50.64 | |||||||||
1975 | 24.97 | a | 17.25 | 28.13 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.45 | i | |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.95 | 25.81 | 28.38 | j | ||
1977 | 11.53 | a | 32.33 | a | 33.57 | b | 50.78 | 62.93 | a | 71.17 | 76.61 | 69.06 | 64.20 | 50.23 | 33.20 | 20.18 | 47.98 | |||||||||
1978 | 6.68 | a | 13.17 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9.93 | j |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.55 | 28.55 | k | |
1999 | 22.90 | a | 37.98 | a | 38.93 | a | 45.45 | a | 55.85 | a | 67.43 | b | 75.17 | a | 69.31 | 56.62 | a | 50.35 | 43.47 | 34.31 | 49.81 | |||||
2000 | 26.35 | 34.41 | 41.82 | a | 47.03 | a | 58.98 | b | 65.92 | 75.46 | c | 77.24 | 66.60 | 52.08 | 26.80 | 14.74 | 48.95 | |||||||||
2001 | 29.24 | 16.94 | b | 35.06 | 49.69 | a | 59.35 | 67.43 | a | 76.29 | 76.63 | 65.23 | 51.16 | 42.05 | 29.47 | 49.88 | ||||||||||
2002 | 29.37 | 34.02 | a | 24.98 | a | 46.66 | a | 54.90 | 73.78 | 81.19 | 74.27 | 65.34 | a | 41.53 | 38.42 | 31.92 | 49.70 | |||||||||
2003 | 24.69 | 22.29 | 36.34 | 50.13 | 57.21 | 65.12 | 77.60 | 78.44 | 62.53 | 54.06 | 30.57 | a | 30.35 | 49.11 | ||||||||||||
2004 | 21.84 | 28.24 | 41.55 | 50.67 | 59.19 | 64.43 | 74.70 | a | 69.82 | a | 65.37 | 50.58 | 38.53 | 32.79 | b | 49.81 | ||||||||||
2005 | 20.68 | 33.34 | 37.89 | 49.07 | 55.50 | 69.28 | 76.50 | 73.39 | 67.50 | 51.53 | a | 39.27 | 23.69 | 49.80 | ||||||||||||
2006 | 37.06 | 26.09 | 33.56 | 52.03 | 60.00 | 72.70 | 82.35 | 75.20 | a | 59.45 | 46.34 | 36.13 | 30.45 | 50.95 | ||||||||||||
2007 | 25.63 | 19.32 | 45.42 | a | 45.47 | 61.85 | 70.75 | 80.74 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.74 | f | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.92 | 24.69 | 34.63 | 47.16 | 57.63 | 68.32 | 75.33 | 73.62 | 63.20 | 51.17 | 36.53 | 25.38 | 48.37 | |||||||||||||
S.D. | 6.83 | 7.02 | 6.38 | 3.65 | 2.73 | 3.46 | 3.31 | 3.20 | 3.36 | 3.84 | 4.63 | 5.81 | 1.43 | |||||||||||||
SKEW | -0.09 | 0.11 | -0.11 | -0.27 | 0.10 | 0.33 | -0.13 | -0.06 | -1.05 | -0.16 | -0.46 | -0.49 | -0.08 | |||||||||||||
MAX | 37.06 | 42.14 | 48.78 | 54.30 | 62.93 | 76.48 | 82.35 | 79.11 | 68.12 | 61.37 | 44.88 | 35.18 | 50.95 | |||||||||||||
MIN | 6.68 | 10.46 | 21.96 | 38.33 | 52.48 | 62.33 | 67.03 | 67.03 | 52.43 | 41.53 | 25.73 | 12.29 | 45.40 | |||||||||||||
YRS | 45 | 45 | 45 | 44 | 44 | 44 | 40 | 43 | 42 | 40 | 43 | 43 | 34 |