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 | 31.17 | 25.00 | s | 31.17 | k | |
1905 | 19.77 | 11.54 | 41.81 | 40.83 | 53.63 | a | 63.50 | 62.68 | 65.06 | 65.00 | a | ----- | z | ----- | z | 18.10 | 44.19 | b | ||||||||
1906 | 21.94 | 19.04 | ----- | z | 38.77 | 50.48 | 56.00 | 61.32 | 59.61 | 53.37 | 35.52 | 22.13 | 31.80 | a | 40.91 | a | ||||||||||
1907 | 23.23 | 21.00 | ----- | z | 36.10 | ----- | z | ----- | z | ----- | z | 61.29 | n | 52.27 | ----- | z | ----- | z | 25.71 | 31.66 | g | |||||
1908 | ----- | z | ----- | z | 28.35 | 39.73 | ----- | z | 54.50 | 59.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.62 | h | ||||
1909 | ----- | z | ----- | z | ----- | z | 37.13 | 46.19 | 55.07 | 65.71 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.13 | i | |||
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 | ----- | 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 | 60.12 | d | 47.65 | 36.73 | h | 26.80 | a | 44.85 | i | |
1963 | 9.94 | 26.11 | 32.25 | c | 44.90 | 53.74 | 60.60 | 65.42 | 62.30 | k | 58.30 | 48.81 | ----- | z | ----- | z | 44.45 | c | ||||||||
1964 | ----- | z | 22.34 | 29.03 | 43.17 | 54.00 | 60.83 | 66.94 | 65.71 | 57.90 | a | 44.48 | 35.55 | a | 26.52 | 46.04 | a | |||||||||
1965 | 26.80 | a | 23.22 | a | 25.26 | 45.30 | 53.62 | e | 59.07 | 63.71 | 62.62 | o | 53.31 | a | 44.03 | 37.70 | 28.29 | 41.85 | a | |||||||
1966 | 12.30 | a | 20.41 | a | 33.52 | 39.27 | 48.73 | a | 60.20 | 68.60 | a | 62.16 | 55.53 | 41.19 | 33.80 | 20.48 | 41.35 | |||||||||
1967 | 22.32 | 22.89 | 35.24 | b | 46.80 | 47.29 | 60.67 | 64.00 | 62.27 | e | 54.43 | 44.80 | a | 31.58 | d | 22.23 | a | 42.88 | ||||||||
1968 | 23.10 | 23.24 | 33.19 | 39.67 | 49.03 | 59.47 | ----- | z | 63.06 | 53.17 | 44.23 | 32.53 | 20.10 | 40.07 | a | |||||||||||
1969 | 23.23 | 25.50 | 26.53 | a | 42.37 | 51.71 | 57.83 | 66.58 | 64.42 | 57.13 | 41.77 | a | 28.95 | i | 28.28 | b | 44.12 | a | ||||||||
1970 | 14.10 | ----- | z | 24.35 | k | 38.34 | a | 51.19 | 59.10 | 65.79 | b | 63.31 | b | 55.67 | 38.92 | f | 28.77 | 25.84 | 44.68 | c | ||||||
1971 | 19.80 | a | 21.82 | 27.97 | 39.61 | b | 47.20 | a | 61.70 | 64.73 | a | 60.07 | c | 55.07 | a | 45.39 | 33.18 | b | 28.32 | 42.07 | ||||||
1972 | 18.60 | a | 23.38 | 33.80 | a | 41.85 | d | 49.80 | a | 60.10 | 62.87 | a | 60.93 | a | 57.27 | 45.63 | a | 27.47 | 20.00 | 41.81 | ||||||
1973 | 20.97 | 24.29 | 35.10 | a | 35.80 | 47.29 | 57.45 | a | 62.10 | 61.52 | 54.10 | 45.48 | 33.67 | 20.55 | 41.53 | |||||||||||
1974 | 18.65 | 22.43 | 36.23 | 41.20 | 52.33 | a | 58.10 | 64.29 | 61.03 | 49.87 | 46.35 | 32.40 | 21.81 | 42.06 | ||||||||||||
1975 | 21.84 | 21.61 | 27.90 | 37.14 | a | 46.68 | 58.40 | 63.23 | 62.48 | 50.90 | 41.71 | 30.23 | 24.19 | 40.53 | ||||||||||||
1976 | 18.00 | 30.28 | 29.52 | 42.40 | 44.39 | 57.97 | 61.94 | 62.84 | 55.43 | b | 37.16 | 26.52 | a | 19.90 | 40.53 | |||||||||||
1977 | 14.61 | 27.29 | 29.87 | 42.34 | a | 54.32 | 61.77 | 65.33 | a | 65.48 | 56.93 | 44.55 | 30.53 | 23.42 | 43.04 | |||||||||||
1978 | 16.00 | 17.96 | 29.71 | 44.83 | 49.77 | 63.17 | 65.71 | 62.72 | b | 57.57 | 44.48 | 35.70 | 19.45 | 42.26 | ||||||||||||
1979 | 13.87 | 22.46 | 32.77 | 41.72 | a | 49.65 | 59.00 | 63.97 | 60.26 | 55.24 | a | 44.23 | 28.53 | 25.10 | 41.40 | |||||||||||
1980 | 23.39 | 24.59 | 27.58 | 38.31 | d | 48.70 | a | 63.97 | 68.16 | 64.77 | 56.69 | a | 39.20 | a | 28.23 | 26.31 | b | 42.49 | ||||||||
1981 | 23.71 | 23.71 | 34.13 | a | 47.03 | a | 50.30 | a | 62.37 | 66.69 | b | 62.32 | 59.10 | 46.23 | 36.66 | a | 26.68 | 44.91 | ||||||||
1982 | 26.25 | o | 21.43 | g | 33.31 | e | 40.13 | g | 49.19 | e | 56.25 | f | 64.42 | g | 67.03 | b | 59.55 | h | 43.79 | l | 33.39 | g | 26.32 | f | 49.84 | i |
1983 | 24.42 | g | 25.78 | e | 33.05 | l | 37.61 | g | 47.97 | b | 56.67 | l | 65.56 | f | 66.42 | e | 59.64 | h | ----- | z | 29.27 | o | 13.19 | 38.34 | h | |
1984 | 19.29 | 25.14 | 28.23 | a | 36.13 | 49.74 | 62.03 | 63.32 | 64.39 | 54.13 | 43.26 | 32.50 | 27.68 | 42.15 | ||||||||||||
1985 | 19.29 | 22.48 | a | 34.97 | 42.69 | a | 52.66 | b | 60.27 | 63.77 | 63.87 | a | 57.03 | 44.06 | 31.57 | 21.16 | 42.82 | |||||||||
1986 | 26.16 | 28.36 | 36.58 | 43.37 | 51.35 | 61.30 | 67.65 | 63.00 | 58.17 | 45.00 | 31.33 | c | 26.50 | a | 44.90 | |||||||||||
1987 | 22.71 | 31.39 | 30.16 | 38.47 | 53.03 | b | 60.23 | 63.73 | a | 63.42 | 55.10 | 42.68 | 32.86 | a | 21.87 | a | 42.97 | |||||||||
1988 | 19.13 | 22.82 | a | 28.58 | 37.50 | 50.35 | 59.87 | 64.45 | 64.26 | 54.82 | b | ----- | z | ----- | z | 20.91 | t | 44.64 | c | |||||||
1989 | 23.61 | 21.00 | 31.39 | 43.73 | 53.03 | 57.50 | d | 63.00 | 63.68 | 54.11 | b | 43.87 | 30.43 | 17.28 | b | 41.89 | ||||||||||
1990 | 23.90 | 26.96 | 32.45 | 39.41 | a | 46.48 | 64.81 | d | 62.32 | 62.16 | 58.37 | 44.00 | l | 34.87 | 15.56 | d | 42.48 | a | ||||||||
1991 | 20.19 | 28.19 | a | 34.26 | 41.50 | 51.26 | 60.40 | 63.54 | c | 62.29 | 54.37 | 42.48 | 27.43 | 26.58 | 42.71 | |||||||||||
1992 | 24.74 | 29.52 | 33.58 | 42.80 | 49.37 | a | 57.33 | 62.94 | 59.86 | c | 54.93 | b | 43.26 | 27.80 | 21.84 | 42.33 | ||||||||||
1993 | 20.81 | 22.46 | 30.00 | 37.39 | b | 49.16 | 58.76 | a | 65.95 | j | 63.35 | 52.70 | 38.93 | a | 25.57 | 23.71 | 38.44 | a | ||||||||
1994 | 19.77 | 19.00 | 32.23 | 39.13 | 51.19 | 63.07 | 62.27 | a | 61.87 | 54.50 | 45.23 | 32.33 | 27.65 | 42.35 | ||||||||||||
1995 | 24.90 | 27.89 | 31.55 | 37.50 | 47.55 | 56.97 | a | 62.87 | 65.06 | 54.54 | b | 41.35 | 31.67 | 26.25 | c | 42.34 | ||||||||||
1996 | 17.87 | 25.75 | a | 25.42 | 38.50 | 56.21 | c | 59.93 | 65.07 | d | 63.16 | 55.58 | d | 43.58 | 30.60 | 23.26 | 42.08 | |||||||||
1997 | 22.03 | a | 26.19 | a | 30.84 | 35.28 | a | 49.61 | 58.62 | d | 64.81 | 63.35 | 58.77 | 43.55 | 29.73 | 22.83 | a | 42.13 | ||||||||
1998 | 24.52 | d | 29.50 | 27.60 | a | 36.64 | e | 53.45 | 60.52 | a | 66.60 | f | 63.23 | 60.83 | a | 48.26 | 35.70 | 25.26 | 42.32 | a | ||||||
1999 | 24.14 | b | 28.92 | b | 31.94 | 41.48 | e | 48.71 | 58.83 | a | 62.69 | r | 64.87 | a | 56.00 | e | ----- | z | 36.67 | 24.20 | k | 43.51 | c | |||
2000 | ----- | z | 29.33 | h | 30.81 | o | 29.33 | u | 50.38 | r | 56.47 | k | ----- | z | 64.14 | x | 57.14 | w | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.47 | a | 55.70 | 42.86 | b | 38.39 | b | 26.69 | b | 45.82 | g | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.52 | 24.12 | 31.43 | 40.40 | 50.26 | 59.78 | 64.23 | 63.18 | 55.85 | 43.57 | 31.59 | 23.61 | 42.31 | |||||||||||||
S.D. | 3.94 | 3.92 | 3.49 | 3.10 | 2.65 | 2.35 | 1.99 | 1.81 | 2.78 | 2.85 | 3.63 | 3.98 | 1.03 | |||||||||||||
SKEW | -0.80 | -0.61 | 0.48 | 0.31 | 0.08 | -0.03 | 0.34 | -0.05 | 0.72 | -0.81 | -0.27 | -0.50 | 0.89 | |||||||||||||
MAX | 26.80 | 31.39 | 41.81 | 47.03 | 56.21 | 64.81 | 68.60 | 67.03 | 65.00 | 48.81 | 38.39 | 31.80 | 44.91 | |||||||||||||
MIN | 9.94 | 11.54 | 25.26 | 35.28 | 44.39 | 54.50 | 59.90 | 59.61 | 49.87 | 35.52 | 22.13 | 13.19 | 40.53 | |||||||||||||
YRS | 37 | 38 | 37 | 40 | 40 | 39 | 34 | 38 | 40 | 34 | 35 | 38 | 24 |