YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | 57.77 | 71.60 | 74.23 | 75.90 | 69.38 | a | 58.43 | a | 46.23 | 28.90 | a | 60.31 | d | |||||
1906 | 32.23 | a | 37.00 | a | 36.44 | v | 52.93 | 61.23 | 71.60 | 73.39 | 74.90 | 66.50 | 59.03 | 45.67 | 39.10 | 55.78 | a | |||||||||
1907 | 36.23 | 43.54 | 49.81 | 56.77 | 55.39 | 65.43 | 76.39 | 72.29 | 68.60 | 60.00 | 45.47 | 35.26 | 55.43 | |||||||||||||
1908 | 33.23 | 37.24 | 44.97 | 53.27 | 57.06 | 68.77 | 75.26 | 72.23 | 68.63 | 53.52 | 47.40 | 31.03 | 53.55 | |||||||||||||
1909 | 34.29 | 32.57 | 41.26 | 48.13 | 56.00 | 72.63 | 77.32 | 73.61 | 66.47 | 58.74 | 48.90 | 27.94 | 53.16 | |||||||||||||
1910 | 31.03 | 31.93 | 51.23 | 55.33 | 63.39 | 75.27 | 79.94 | 74.35 | 72.97 | 59.03 | 50.77 | 36.74 | 56.83 | |||||||||||||
1911 | 36.19 | 34.46 | 45.39 | 52.17 | 61.74 | 71.83 | 71.55 | 73.29 | 68.43 | 55.10 | 39.17 | a | 28.35 | 53.14 | ||||||||||||
1912 | 35.19 | 35.41 | 40.42 | 47.27 | 60.03 | 68.03 | 72.26 | 74.13 | 62.70 | 54.32 | 45.17 | 26.10 | 51.75 | |||||||||||||
1913 | 27.10 | 31.32 | 37.97 | 51.43 | 64.26 | 69.87 | 76.26 | 74.84 | 64.23 | 52.65 | 47.27 | 26.77 | 52.00 | |||||||||||||
1914 | 32.13 | 32.39 | 40.55 | 51.33 | 62.26 | 71.10 | 73.97 | 72.39 | 70.37 | 57.63 | a | 51.40 | 26.84 | 53.53 | ||||||||||||
1915 | 26.90 | 35.04 | 40.29 | ----- | z | ----- | z | 75.23 | 78.81 | 76.45 | ----- | z | ----- | z | ----- | z | ----- | z | 55.45 | f | ||||||
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.97 | 78.10 | 74.97 | ----- | z | ----- | z | ----- | z | ----- | z | 76.68 | i | |||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.06 | o | 70.62 | a | ----- | z | ----- | z | ----- | z | 70.62 | k |
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 | ----- | 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 | 46.30 | 41.32 | 43.81 | j | ||
1959 | 36.29 | 37.59 | a | 43.52 | 55.07 | b | 61.97 | 76.57 | 79.61 | 73.68 | 68.67 | 58.32 | 46.57 | 39.03 | 56.41 | |||||||||||
1960 | 32.13 | 31.93 | 46.03 | 55.70 | 62.87 | 75.83 | 78.74 | 79.29 | 72.70 | 58.06 | 47.13 | 35.43 | a | 56.32 | ||||||||||||
1961 | 34.97 | 43.07 | 43.97 | 51.67 | 64.63 | a | 76.87 | 78.71 | 75.13 | 65.73 | 59.32 | 41.00 | 31.87 | 55.58 | ||||||||||||
1962 | 29.35 | 39.46 | 39.42 | 56.33 | 61.94 | 72.30 | 75.32 | 76.94 | 68.53 | 64.45 | 50.00 | 42.71 | 56.40 | |||||||||||||
1963 | 33.16 | 42.39 | 42.87 | 53.47 | 67.77 | 72.28 | a | 78.68 | 72.81 | 73.17 | 65.10 | 48.27 | 34.74 | 57.06 | ||||||||||||
1964 | 30.90 | 32.28 | 37.27 | a | 49.07 | 62.71 | 71.20 | 78.48 | 72.35 | 67.03 | 65.71 | 43.38 | a | 32.84 | 53.60 | |||||||||||
1965 | 35.16 | 37.00 | 39.00 | 50.60 | 55.55 | 65.50 | 75.45 | 73.23 | 62.97 | 63.16 | 44.57 | 34.50 | a | 53.06 | ||||||||||||
1966 | 29.26 | 30.64 | 47.63 | a | 55.70 | 66.23 | 72.30 | 78.42 | 76.29 | 71.23 | 60.94 | 49.27 | 31.84 | 55.81 | ||||||||||||
1967 | 35.71 | 39.93 | 49.42 | 52.93 | 60.55 | 70.33 | 77.87 | 73.16 | 69.03 | 63.23 | 47.57 | 31.19 | 55.91 | |||||||||||||
1968 | 30.35 | 37.32 | a | 42.74 | 47.13 | 59.74 | 75.47 | 75.90 | 70.65 | 67.67 | 60.45 | 40.53 | 32.90 | 53.41 | ||||||||||||
1969 | 35.97 | 32.96 | 38.52 | 55.67 | 66.32 | 67.30 | 76.32 | 76.70 | a | 68.20 | 46.94 | 41.73 | 35.19 | 53.49 | ||||||||||||
1970 | 32.35 | 39.68 | 39.06 | 46.13 | 64.29 | ----- | z | 75.32 | 73.84 | 65.47 | 51.00 | 43.67 | 33.45 | 51.30 | a | |||||||||||
1971 | 36.39 | 36.64 | 45.00 | 52.77 | 59.48 | 72.10 | 76.13 | 74.06 | 66.60 | 56.65 | 42.47 | 29.29 | 53.96 | |||||||||||||
1972 | 34.00 | 39.21 | 50.16 | 54.53 | 65.26 | 74.77 | 78.39 | 75.61 | 68.20 | 57.52 | 37.07 | 29.03 | 55.31 | |||||||||||||
1973 | 30.13 | 35.75 | 41.39 | 48.17 | 62.74 | 72.69 | a | 76.16 | 75.65 | 70.80 | 63.77 | a | 53.27 | 42.93 | a | 56.12 | ||||||||||
1974 | 39.71 | 47.15 | a | 55.26 | 58.10 | 68.77 | 76.30 | 77.16 | 74.65 | 71.38 | a | 61.77 | 46.55 | a | 29.65 | 58.87 | ||||||||||
1975 | 33.84 | 35.68 | 43.48 | 48.43 | 59.19 | 69.87 | 75.87 | a | 75.39 | 68.30 | 61.84 | 45.10 | a | 35.06 | 54.34 | |||||||||||
1976 | 32.84 | 42.11 | a | 43.00 | 54.37 | 63.39 | 70.90 | 77.52 | 72.39 | 68.03 | a | 58.00 | 49.33 | 40.61 | 56.04 | |||||||||||
1977 | 35.26 | 43.29 | 42.97 | 57.10 | 63.10 | 77.03 | 76.48 | ----- | z | 71.37 | 66.35 | ----- | z | 37.10 | 57.00 | b | ||||||||||
1978 | 33.13 | 37.57 | 44.62 | b | ----- | z | 59.53 | a | 75.20 | 78.33 | d | 76.63 | a | 72.97 | 66.65 | 49.95 | h | 29.52 | 57.41 | b | ||||||
1979 | 27.90 | 36.79 | 43.97 | 54.24 | a | 61.81 | 73.40 | 79.55 | 74.26 | 76.20 | 66.19 | 38.69 | a | 38.26 | 55.94 | |||||||||||
1980 | 37.58 | 44.07 | 40.00 | e | 50.97 | 60.67 | a | 76.63 | 80.94 | 77.32 | 74.00 | 63.67 | a | 49.93 | 48.63 | a | 58.70 | |||||||||
1981 | 42.97 | 44.08 | b | 44.23 | a | 59.90 | 60.84 | 78.00 | a | 76.03 | a | 74.52 | 71.63 | c | 58.16 | 51.20 | 39.68 | 58.44 | ||||||||
1982 | 34.42 | 35.73 | b | 42.06 | 51.73 | 60.29 | 71.47 | ----- | z | 73.13 | a | 65.97 | 56.16 | 42.97 | 36.84 | 51.89 | a | |||||||||
1983 | 38.97 | a | 40.82 | 44.35 | 46.46 | d | 57.65 | 67.67 | 77.23 | 75.39 | 71.14 | a | 60.68 | 44.36 | b | 33.29 | 54.83 | |||||||||
1984 | 29.81 | 37.83 | 42.35 | 46.37 | 64.10 | b | 69.57 | 75.39 | 72.90 | 69.33 | 50.77 | 44.87 | 37.68 | 53.41 | ||||||||||||
1985 | 33.77 | 34.32 | 42.65 | 54.90 | 62.00 | 73.20 | 76.26 | 76.71 | 64.37 | 58.84 | 42.80 | 38.10 | 54.83 | |||||||||||||
1986 | 41.26 | 40.46 | b | 50.87 | 52.39 | b | 60.81 | 73.50 | 73.68 | 75.06 | 64.10 | 57.43 | a | 44.23 | 35.58 | 55.78 | ||||||||||
1987 | 34.94 | 39.18 | 43.00 | 56.53 | 61.48 | 75.00 | 79.13 | 74.13 | 68.27 | 64.77 | 46.87 | 35.23 | 56.54 | |||||||||||||
1988 | 33.26 | 40.76 | 43.52 | 57.86 | a | 62.45 | 75.80 | 79.29 | 76.84 | 69.00 | 67.10 | 46.03 | 35.23 | 57.26 | ||||||||||||
1989 | 32.39 | 38.11 | 50.68 | 59.00 | 65.55 | 73.53 | 81.35 | 74.13 | 73.07 | 60.97 | 51.17 | 39.58 | 58.29 | |||||||||||||
1990 | 38.06 | 41.75 | 49.16 | 56.38 | a | 61.74 | 77.67 | 75.23 | 74.58 | 71.53 | 60.29 | 45.43 | 32.03 | 56.99 | ||||||||||||
1991 | 33.29 | 42.96 | 41.81 | 50.53 | 63.00 | b | 72.13 | 74.10 | 72.52 | 67.41 | c | 61.17 | a | 42.93 | 35.61 | 54.79 | ||||||||||
1992 | 35.19 | 40.32 | a | 47.40 | a | 61.04 | b | 65.10 | a | 71.57 | 73.55 | b | 70.90 | 69.71 | b | 62.77 | 35.23 | 30.10 | a | 55.24 | ||||||
1993 | 34.87 | a | 35.54 | 46.03 | 52.97 | 62.86 | b | 71.57 | 77.93 | c | 71.37 | a | 69.71 | b | 58.77 | 40.43 | 33.23 | 54.61 | ||||||||
1994 | 34.43 | a | 36.18 | 49.47 | a | 54.04 | b | 65.89 | d | 77.20 | 77.90 | a | 74.27 | a | 68.11 | c | 56.52 | b | 38.34 | a | 32.60 | a | 55.41 | |||
1995 | 31.97 | a | 43.21 | 45.71 | 49.54 | b | 56.19 | d | 68.93 | 74.00 | a | 74.19 | 66.63 | c | 60.17 | a | 47.24 | a | 35.57 | a | 54.45 | |||||
1996 | 32.67 | a | 37.75 | a | 44.61 | c | 54.65 | d | 70.21 | b | 73.73 | 75.74 | 72.48 | 64.25 | b | 54.84 | 42.59 | a | 31.41 | b | 54.58 | |||||
1997 | 30.00 | a | 33.00 | a | 48.73 | a | 49.60 | 63.48 | 71.64 | b | 72.74 | 69.58 | 68.63 | 59.45 | 43.43 | 32.57 | a | 53.57 | ||||||||
1998 | 35.77 | 34.71 | 44.40 | a | 50.50 | 64.29 | 71.97 | 76.43 | a | 74.90 | 73.03 | 57.35 | 46.70 | 39.71 | 55.81 | |||||||||||
1999 | 39.03 | 43.82 | 51.94 | 48.45 | a | 60.93 | a | 71.20 | 73.77 | 68.87 | a | 66.75 | b | 65.06 | 55.52 | a | 34.53 | a | 56.66 | |||||||
2000 | 36.43 | a | 41.58 | c | 43.64 | c | 58.79 | a | 68.59 | b | 74.38 | a | 78.16 | 74.58 | 71.14 | a | 58.00 | 37.47 | 37.00 | 56.65 | ||||||
2001 | 32.58 | 38.89 | 44.97 | b | 57.11 | b | 66.93 | b | 75.34 | a | 76.13 | a | 72.50 | c | 72.18 | b | 62.77 | a | 48.33 | 32.58 | 56.69 | |||||
2002 | 33.19 | 36.54 | 45.32 | 59.79 | a | 67.00 | a | 78.97 | 81.10 | 75.74 | 67.67 | 56.61 | 42.60 | 34.37 | a | 56.57 | ||||||||||
2003 | 41.42 | 36.54 | 46.45 | 55.07 | a | 65.13 | 72.31 | a | 82.26 | 74.74 | 69.87 | 65.61 | 41.90 | a | 36.45 | 57.31 | ||||||||||
2004 | 31.23 | 35.03 | 53.13 | 53.07 | 66.45 | 73.53 | 74.81 | 73.42 | 67.10 | 55.74 | 44.50 | 34.48 | 55.21 | |||||||||||||
2005 | 37.71 | 38.39 | 43.35 | 54.87 | 65.23 | 71.40 | 80.97 | 72.81 | 69.23 | 60.74 | 47.76 | a | 31.29 | 56.15 | ||||||||||||
2006 | 34.10 | 38.21 | 42.45 | 58.40 | 67.48 | 76.13 | 76.03 | 71.39 | 64.67 | 56.03 | 46.79 | b | 36.68 | 55.70 | ||||||||||||
2007 | 32.90 | 38.96 | 49.81 | 54.87 | 62.58 | 75.27 | 77.90 | 74.90 | 69.47 | 61.23 | a | 52.80 | 25.93 | d | 56.39 | |||||||||||
2008 | 25.26 | 34.93 | 43.55 | 51.86 | b | 62.23 | 73.55 | a | 77.26 | 76.16 | 69.90 | 60.86 | b | 47.83 | 32.20 | a | 54.63 | |||||||||
2009 | 35.97 | 39.68 | 47.52 | 52.60 | 65.04 | c | 68.23 | 76.71 | 75.74 | 68.13 | 55.48 | b | 50.23 | 28.74 | 55.34 | |||||||||||
2010 | 33.48 | 34.43 | 45.58 | 51.93 | 59.17 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.36 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.91 | 37.86 | 44.75 | 53.30 | 62.67 | 72.86 | 76.84 | 74.16 | 68.86 | 59.54 | 45.54 | 34.23 | 55.42 | |||||||||||||
S.D. | 3.47 | 3.77 | 3.95 | 3.69 | 3.34 | 3.09 | 2.34 | 1.93 | 2.85 | 4.22 | 4.19 | 4.50 | 1.62 | |||||||||||||
SKEW | 0.10 | 0.18 | 0.44 | -0.08 | -0.17 | -0.29 | 0.06 | -0.25 | 0.03 | -0.38 | -0.17 | 0.44 | -0.07 | |||||||||||||
MAX | 42.97 | 47.15 | 55.26 | 61.04 | 70.21 | 78.97 | 82.26 | 79.29 | 76.20 | 67.10 | 55.52 | 48.63 | 58.87 | |||||||||||||
MIN | 25.26 | 30.64 | 37.27 | 46.13 | 55.39 | 65.43 | 71.55 | 68.87 | 62.70 | 46.94 | 35.23 | 25.93 | 51.75 | |||||||||||||
YRS | 62 | 62 | 61 | 60 | 61 | 62 | 62 | 62 | 62 | 61 | 60 | 62 | 55 |