YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 35.35 | e | 47.58 | 47.63 | a | 56.58 | 63.84 | 61.59 | d | 56.31 | a | 48.10 | a | 38.12 | a | 29.38 | a | 48.45 | b | |||
1916 | 17.98 | i | 30.73 | c | 44.21 | e | 42.13 | d | 51.14 | c | 60.52 | a | 71.93 | b | 64.87 | a | 57.00 | a | 43.55 | a | 32.93 | p | 19.33 | g | 51.79 | c |
1917 | 22.24 | l | ----- | z | ----- | z | 38.13 | d | 45.31 | d | 59.52 | b | 69.20 | a | 64.41 | b | 60.22 | 47.27 | i | ----- | z | ----- | z | 56.13 | f | |
1918 | ----- | z | ----- | z | ----- | z | 35.80 | c | 52.30 | a | 65.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.15 | i | |
1919 | 30.02 | a | 24.39 | a | 31.80 | a | 42.57 | b | 52.76 | 63.18 | 70.23 | 68.16 | 60.07 | ----- | z | ----- | z | ----- | z | 49.24 | c | |||||
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.85 | 63.47 | a | 57.55 | 48.21 | b | 30.14 | l | 26.91 | d | 52.40 | g | ||
1921 | 26.36 | b | 28.33 | d | 36.03 | b | 39.50 | 51.66 | f | 63.18 | 69.75 | c | 67.65 | 60.32 | b | ----- | z | ----- | z | ----- | z | 48.89 | d | |||
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 | 25.52 | c | 24.04 | d | 30.98 | d | 46.17 | 53.68 | 61.95 | 69.05 | 69.08 | 64.45 | 47.79 | 32.03 | 24.76 | 45.79 | ||||||||||
1949 | 11.89 | 22.75 | 32.21 | 44.93 | 52.48 | 59.85 | 68.65 | a | 68.55 | 59.20 | 44.34 | 45.33 | 27.35 | 44.79 | ||||||||||||
1950 | 23.82 | 33.61 | 31.40 | 41.52 | 47.13 | 61.12 | 64.89 | 65.19 | 56.05 | 52.30 | a | 34.18 | b | 33.18 | 45.37 | |||||||||||
1951 | 22.82 | a | 28.77 | 29.84 | 39.03 | 51.77 | 55.10 | 68.33 | a | 66.82 | 56.23 | 43.95 | b | 32.07 | 24.50 | 43.27 | ||||||||||
1952 | 25.50 | 28.66 | 27.02 | c | 43.41 | a | 52.24 | 66.17 | 69.18 | 69.76 | b | 61.29 | b | 50.53 | p | 29.17 | 28.52 | c | 45.54 | a | ||||||
1953 | 36.27 | 26.93 | a | 38.00 | 37.88 | 49.63 | 64.75 | 71.42 | 68.37 | 63.27 | 51.92 | 39.55 | 27.84 | 47.99 | ||||||||||||
1954 | 33.18 | a | 40.12 | 28.69 | 47.32 | 51.16 | 63.00 | 73.47 | 69.21 | 63.23 | 48.11 | 41.18 | 31.18 | 49.16 | ||||||||||||
1955 | 22.73 | 22.56 | a | 28.98 | 43.33 | a | 53.71 | 58.20 | 69.95 | 69.27 | a | 59.73 | 50.41 | c | 29.85 | 29.90 | 44.88 | |||||||||
1956 | 29.69 | 22.33 | 32.90 | 40.15 | 53.82 | 65.82 | 68.11 | 66.55 | a | 61.90 | 51.15 | 32.03 | 33.03 | 46.46 | ||||||||||||
1957 | 19.90 | 34.85 | a | 33.19 | 36.52 | 48.82 | 59.87 | 69.27 | 67.92 | 56.70 | 47.63 | 31.42 | 34.98 | 45.09 | ||||||||||||
1958 | 30.26 | 33.45 | 26.32 | 39.93 | 57.10 | 62.78 | 64.97 | 70.87 | 61.55 | 50.23 | 36.42 | 29.52 | 46.95 | |||||||||||||
1959 | 26.71 | 24.71 | 31.82 | 38.98 | 51.06 | 65.78 | 69.11 | 71.67 | a | 56.58 | 43.90 | 34.34 | a | 33.24 | 45.66 | |||||||||||
1960 | 24.87 | 21.67 | 33.60 | 45.78 | 53.05 | 64.60 | 70.11 | 69.16 | 61.33 | 49.29 | 35.98 | a | 27.74 | 46.43 | ||||||||||||
1961 | 29.06 | 32.25 | 31.87 | 39.37 | 51.37 | a | 61.92 | 68.61 | 68.06 | 53.42 | 46.21 | 32.27 | 24.29 | 44.89 | ||||||||||||
1962 | 19.68 | 28.29 | 30.02 | 45.57 | 54.76 | 59.60 | 65.23 | 67.84 | 58.29 | a | 51.31 | 39.36 | a | 30.47 | 45.87 | |||||||||||
1963 | 16.70 | c | 33.00 | 33.32 | a | 42.83 | a | 55.61 | 63.47 | 72.19 | 68.05 | 62.08 | 54.28 | a | 38.62 | 26.34 | 47.21 | |||||||||
1964 | 27.37 | a | 22.47 | 25.97 | 40.13 | 53.15 | 59.78 | 72.37 | 65.43 | a | 57.02 | 48.94 | 34.40 | 26.82 | a | 44.49 | ||||||||||
1965 | 30.25 | a | 24.69 | a | 21.05 | 44.38 | 51.82 | 58.83 | 68.29 | 64.90 | 49.65 | 51.34 | 41.13 | 31.56 | 44.83 | |||||||||||
1966 | 25.92 | 26.35 | a | 38.05 | a | 39.77 | 55.39 | 62.36 | a | 73.03 | 66.13 | 58.96 | b | 46.44 | 37.15 | 28.76 | 46.53 | |||||||||
1967 | 30.03 | 31.30 | e | 39.10 | a | 44.00 | 44.83 | k | 58.42 | 67.21 | 66.10 | 59.10 | 49.69 | 34.87 | 23.39 | 45.75 | a | |||||||||
1968 | 27.94 | 31.31 | 36.94 | 39.17 | 47.73 | 62.52 | c | 67.44 | 64.37 | 57.32 | 50.14 | b | 32.22 | 26.11 | 45.27 | |||||||||||
1969 | 29.15 | a | 29.59 | 27.50 | 47.02 | 54.76 | 56.37 | 69.77 | 70.27 | 61.80 | 44.36 | t | 36.10 | 32.39 | 46.79 | a | ||||||||||
1970 | 31.21 | 40.04 | 30.29 | 37.70 | 53.48 | 59.84 | a | 68.97 | a | 70.50 | 57.14 | a | 41.27 | 35.28 | 28.56 | 46.19 | ||||||||||
1971 | 29.61 | 25.75 | 32.61 | 41.60 | 49.05 | 63.08 | 63.93 | d | 66.16 | 52.00 | a | 45.08 | a | 36.37 | 28.06 | 44.44 | ||||||||||
1972 | 25.03 | 32.93 | 40.68 | 43.40 | 51.87 | 63.42 | 65.81 | 65.74 | 57.78 | 47.21 | 29.78 | 22.90 | a | 45.55 | ||||||||||||
1973 | 24.74 | 29.66 | 32.47 | 37.12 | 50.50 | 62.82 | 67.27 | 69.10 | 55.55 | a | 51.24 | 35.07 | 28.94 | 45.37 | ||||||||||||
1974 | 24.11 | ----- | z | 39.00 | 43.35 | 55.35 | 63.67 | 70.48 | 64.84 | 57.29 | a | 50.10 | 37.05 | 28.66 | 48.54 | a | ||||||||||
1975 | 26.50 | 27.27 | 33.15 | a | 37.91 | b | 49.85 | 59.60 | 69.11 | 67.82 | a | 56.42 | 49.50 | 35.78 | a | ----- | z | 46.63 | a | |||||||
1976 | 31.12 | e | 33.95 | a | 33.13 | 44.93 | 53.03 | 62.02 | 71.15 | 66.98 | a | 60.38 | 45.32 | 34.07 | a | 31.53 | 47.30 | |||||||||
1977 | 22.94 | 33.91 | 31.28 | a | 45.97 | 53.76 | 66.98 | 69.37 | 65.31 | 60.92 | 50.26 | 33.57 | 29.87 | 47.01 | ||||||||||||
1978 | 23.83 | a | 24.68 | 37.77 | 45.18 | 50.26 | 61.98 | 69.72 | a | 65.90 | 61.40 | 49.50 | 33.38 | 21.69 | b | 45.44 | ||||||||||
1979 | 15.13 | 30.36 | 35.52 | 45.31 | a | 50.40 | 61.57 | 69.71 | 66.34 | 62.00 | a | 50.42 | 28.38 | 30.84 | 45.50 | |||||||||||
1980 | 20.28 | a | 28.38 | 30.32 | 42.97 | 50.65 | 66.08 | 72.24 | 67.11 | 60.40 | 47.76 | 36.30 | 37.66 | 46.68 | ||||||||||||
1981 | 32.82 | 32.23 | 35.92 | 49.57 | 50.07 | a | 63.28 | 69.32 | 65.27 | 58.86 | a | 45.52 | b | 38.62 | 29.21 | 47.56 | ||||||||||
1982 | 23.02 | b | 28.22 | c | 34.10 | b | 40.69 | d | 48.73 | c | 55.40 | 66.25 | c | 68.24 | 57.09 | c | 45.78 | b | 32.55 | a | 29.97 | a | 44.17 | |||
1983 | 32.79 | 33.61 | a | 33.53 | b | 35.13 | 47.96 | c | 56.65 | 67.79 | 70.63 | 60.45 | 48.13 | a | 33.38 | 16.78 | b | 44.74 | ||||||||
1984 | 23.94 | d | 28.62 | a | 33.17 | a | 36.86 | a | 53.03 | 61.00 | 69.65 | a | 66.98 | 56.00 | 43.02 | a | 37.35 | c | 27.45 | 44.76 | ||||||
1985 | 21.34 | b | 22.57 | 36.69 | 45.34 | b | 54.87 | 61.28 | a | 67.98 | c | 66.57 | b | 53.86 | a | 44.24 | 26.00 | a | 22.69 | b | 43.62 | |||||
1986 | 34.50 | 30.19 | b | 41.71 | 43.14 | b | 50.21 | 64.10 | 68.16 | 67.56 | 56.20 | b | 44.15 | a | 33.15 | 27.63 | 46.73 | |||||||||
1987 | 27.10 | 30.69 | b | 32.11 | 45.84 | a | 53.24 | 62.33 | 68.12 | a | 64.48 | 56.62 | 45.03 | a | 35.67 | 25.08 | 45.53 | |||||||||
1988 | 19.47 | a | 26.16 | a | 32.08 | 42.20 | 53.10 | 66.03 | 68.66 | 68.56 | 56.79 | b | 48.77 | 35.32 | 27.27 | 45.37 | ||||||||||
1989 | 30.13 | 18.37 | b | 35.97 | a | 43.50 | 53.56 | 58.47 | 70.35 | 66.15 | 57.23 | 47.89 | 37.90 | 23.78 | a | 45.27 | ||||||||||
1990 | 30.19 | 29.34 | 32.31 | b | 43.00 | 48.58 | a | 64.18 | 65.42 | 66.08 | 62.81 | a | 46.19 | 39.28 | 21.13 | 45.71 | ||||||||||
1991 | 24.24 | 35.88 | 36.05 | a | 41.77 | 52.33 | a | 62.50 | a | 67.60 | 68.45 | c | 58.00 | a | 47.83 | a | 31.07 | 30.60 | a | 46.36 | ||||||
1992 | 28.82 | a | 35.97 | 38.63 | 47.19 | a | 55.77 | a | 59.95 | 64.89 | 64.58 | 60.14 | a | 49.26 | 30.75 | b | 23.48 | 46.62 | ||||||||
1993 | 23.19 | d | 24.11 | 36.83 | a | 41.83 | 52.53 | 57.59 | a | 65.08 | 65.06 | 53.83 | 43.69 | 28.41 | a | 28.84 | 43.42 | |||||||||
1994 | 29.32 | 24.91 | 38.18 | 43.02 | 56.15 | 66.15 | 67.68 | 69.19 | 60.68 | 45.50 | b | 32.57 | a | 32.58 | 47.16 | |||||||||||
1995 | 26.95 | b | 31.96 | a | 34.77 | 38.27 | 44.40 | 57.33 | 66.10 | 70.35 | 55.70 | b | 44.13 | a | 36.72 | 30.34 | b | 44.75 | ||||||||
1996 | 23.31 | b | 29.84 | 30.55 | 42.31 | a | 50.35 | a | 62.22 | 68.74 | b | 65.34 | 55.67 | 45.71 | b | 33.84 | a | 27.71 | 44.63 | |||||||
1997 | 22.94 | 26.36 | 36.70 | a | 35.58 | 50.84 | 61.31 | a | 67.05 | a | 63.95 | a | 58.45 | a | 45.44 | 31.15 | 26.52 | 43.86 | ||||||||
1998 | 29.43 | d | 31.91 | a | 33.65 | 41.12 | a | 53.95 | b | 56.75 | b | 69.15 | a | 68.55 | 63.32 | 44.77 | c | 37.57 | 25.40 | 46.30 | ||||||
1999 | 28.25 | c | 33.57 | a | 36.18 | a | 37.27 | 47.98 | 57.67 | 67.68 | 65.30 | a | 52.12 | a | 47.02 | b | 43.74 | a | 32.53 | 45.78 | ||||||
2000 | 30.23 | 34.50 | b | 38.11 | 45.88 | b | 56.18 | a | 62.93 | 72.70 | a | 71.85 | 59.80 | 47.06 | 25.73 | 25.33 | a | 47.53 | ||||||||
2001 | 27.50 | 26.57 | 35.61 | 43.93 | 52.71 | b | 64.41 | b | 71.22 | a | 69.75 | c | 61.85 | 47.32 | 40.32 | 29.66 | b | 47.57 | ||||||||
2002 | 27.12 | b | 28.98 | a | 30.24 | 44.90 | a | 51.53 | 68.25 | 73.73 | a | 67.50 | 59.68 | 40.28 | b | 33.88 | 30.98 | a | 46.42 | |||||||
2003 | 34.02 | a | 25.44 | a | 38.11 | c | 46.17 | 53.26 | 57.70 | 74.18 | a | 70.45 | 56.67 | 52.33 | a | 31.41 | b | 28.75 | a | 47.37 | ||||||
2004 | 29.98 | a | 28.18 | a | 40.27 | 44.92 | f | 54.68 | 59.28 | 66.13 | a | 63.57 | b | 58.35 | 46.95 | 34.03 | 30.57 | a | 46.55 | a | ||||||
2005 | 31.31 | 31.71 | 36.02 | 42.45 | 50.85 | 61.29 | a | 71.03 | 65.55 | 61.16 | a | ----- | z | ----- | z | ----- | z | 50.15 | c | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.53 | 29.07 | 33.87 | 42.15 | 51.85 | 61.56 | 68.81 | 67.18 | 58.49 | 47.46 | 34.71 | 28.19 | 45.80 | |||||||||||||
S.D. | 4.78 | 4.54 | 4.17 | 3.43 | 2.70 | 3.07 | 2.46 | 2.23 | 3.03 | 2.95 | 3.98 | 3.70 | 1.25 | |||||||||||||
SKEW | -0.60 | 0.12 | -0.25 | -0.19 | -0.46 | -0.12 | 0.06 | 0.04 | -0.42 | -0.07 | 0.17 | -0.35 | 0.19 | |||||||||||||
MAX | 36.27 | 40.12 | 44.21 | 49.57 | 57.10 | 68.25 | 74.18 | 71.85 | 64.45 | 54.28 | 45.33 | 37.66 | 49.16 | |||||||||||||
MIN | 11.89 | 18.37 | 21.05 | 35.13 | 44.40 | 55.10 | 63.84 | 61.59 | 49.65 | 40.28 | 25.73 | 16.78 | 43.27 | |||||||||||||
YRS | 60 | 60 | 62 | 63 | 62 | 64 | 64 | 64 | 64 | 58 | 58 | 58 | 51 |