YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | 8.80 | w | ----- | 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 | 25.68 | 29.93 | 16.61 | 24.07 | i | |||
1914 | 27.61 | ----- | z | ----- | z | ----- | z | 33.58 | ----- | z | ----- | z | ----- | z | 33.47 | ----- | z | ----- | z | ----- | z | 31.55 | i | |||
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 | 27.82 | i | 20.23 | 25.10 | 35.67 | 37.68 | 35.42 | 37.00 | a | 31.48 | b | 19.27 | 10.66 | b | 28.06 | c | ||||||
1919 | 12.68 | c | 23.61 | 23.06 | 22.77 | 26.84 | 29.43 | 37.97 | 34.65 | 30.03 | 17.23 | 17.63 | 8.72 | b | 23.72 | |||||||||||
1920 | 17.52 | 25.18 | r | 21.45 | 23.07 | 23.29 | c | 34.97 | a | 37.03 | 38.23 | a | 31.10 | 26.65 | 20.17 | a | 17.58 | 26.46 | a | |||||||
1921 | 15.81 | 22.64 | 24.60 | a | 25.10 | 31.06 | 37.23 | 34.06 | 33.76 | b | 26.07 | 25.77 | a | 21.94 | m | 13.27 | a | 26.31 | a | |||||||
1922 | -2.58 | 9.29 | d | 13.25 | g | 21.00 | a | 28.88 | n | 36.30 | 36.61 | 36.97 | 28.37 | 27.26 | 16.10 | 15.13 | a | 22.44 | b | |||||||
1923 | 19.17 | a | 9.85 | a | 19.58 | 25.77 | 30.87 | 32.97 | 38.61 | 37.30 | a | 32.63 | 24.87 | 21.77 | 13.34 | b | 25.56 | |||||||||
1924 | ----- | z | 24.66 | 17.10 | 19.50 | 28.87 | 32.23 | 36.03 | 33.94 | 28.24 | a | 26.13 | 21.45 | a | 3.93 | a | 24.73 | a | ||||||||
1925 | 24.83 | a | 24.82 | 20.87 | 26.53 | 32.57 | a | 34.14 | b | 39.42 | 33.97 | a | 29.47 | 19.17 | g | 20.32 | b | 18.18 | i | 28.69 | b | |||||
1926 | 15.43 | a | 24.96 | 15.77 | a | 26.97 | 26.81 | 33.07 | 37.58 | 35.84 | 20.70 | 23.68 | 25.96 | b | 18.10 | a | 25.41 | |||||||||
1927 | 19.71 | c | 22.04 | a | 21.00 | 23.25 | f | 27.45 | 33.91 | g | 34.45 | 31.90 | a | 29.67 | 24.83 | a | 26.28 | a | 5.39 | h | 26.37 | c | ||||
1928 | 17.60 | a | 18.00 | f | 24.96 | e | 24.59 | c | 30.10 | 34.85 | d | 37.76 | b | 31.46 | c | 25.81 | c | 19.96 | g | 27.20 | o | 10.68 | f | 28.39 | d | |
1929 | 7.42 | 3.25 | d | 19.25 | c | 25.57 | 23.00 | 29.88 | d | 32.33 | g | 33.72 | f | 24.70 | 24.15 | e | 7.95 | j | 24.10 | 20.15 | c | |||||
1930 | -2.10 | a | 24.81 | a | 25.26 | 26.53 | 30.32 | 28.96 | d | 35.26 | 35.20 | a | 31.40 | j | 25.64 | q | ----- | z | 7.29 | 23.50 | c | |||||
1931 | 18.32 | 18.82 | 20.92 | e | 19.22 | c | 29.81 | 30.55 | a | 39.48 | 33.96 | f | 28.22 | g | 21.50 | c | 16.30 | c | 13.84 | 22.88 | b | |||||
1932 | 11.10 | 9.65 | c | 26.84 | 25.72 | l | 30.16 | 34.47 | 33.16 | 32.97 | 27.64 | p | 22.45 | b | 25.28 | a | 5.37 | a | 23.14 | b | ||||||
1933 | 13.00 | f | 10.68 | 23.23 | 22.93 | 26.77 | 36.83 | 37.10 | 34.32 | 26.20 | 21.52 | 15.47 | 27.27 | a | 25.66 | a | ||||||||||
1934 | 23.27 | a | 21.21 | 23.87 | 27.00 | 32.77 | 31.55 | j | 34.58 | 35.65 | 28.70 | 26.37 | a | 28.07 | 19.74 | 27.38 | a | |||||||||
1935 | 14.50 | c | 17.11 | a | 20.32 | 25.55 | a | 26.26 | 32.77 | d | 38.10 | ----- | z | 28.00 | ----- | z | 10.33 | 15.16 | 22.81 | b | ||||||
1936 | 17.07 | a | 19.11 | a | 21.68 | 26.63 | 30.29 | 35.97 | 37.81 | 33.50 | a | 25.60 | 20.52 | b | 6.77 | 3.75 | w | 24.99 | a | |||||||
1937 | ----- | z | 14.71 | 21.32 | c | 23.07 | 28.61 | 37.63 | 35.94 | 30.61 | 28.57 | 24.90 | 23.79 | a | 21.63 | a | 26.44 | a | ||||||||
1938 | 17.74 | 13.74 | a | 22.32 | 28.00 | 29.23 | 31.90 | a | 38.84 | 32.32 | 32.60 | 26.55 | 15.53 | 15.50 | a | 25.36 | ||||||||||
1939 | 13.29 | 15.92 | b | 21.40 | a | 23.80 | 32.33 | g | 31.67 | ----- | z | 35.81 | 30.45 | a | 25.45 | 15.07 | 21.40 | a | 23.43 | b | ||||||
1940 | 18.71 | 25.89 | a | 23.10 | 24.63 | 30.17 | a | 34.34 | a | ----- | z | 34.42 | 32.79 | a | 27.50 | g | 20.15 | d | 14.68 | 25.89 | b | |||||
1941 | 18.84 | 21.93 | 16.93 | a | 23.30 | 29.34 | b | 33.83 | 37.39 | 39.45 | 29.69 | a | 24.61 | 23.67 | 19.39 | 26.53 | ||||||||||
1942 | 12.19 | d | 16.24 | g | 21.03 | 24.63 | 29.14 | b | 33.00 | 38.16 | 35.84 | 29.48 | e | 21.90 | 26.17 | g | 22.73 | a | 26.81 | b | ||||||
1943 | ----- | z | 16.04 | 21.39 | 28.93 | 25.97 | 32.47 | 35.77 | 34.00 | 31.50 | 32.90 | u | 22.46 | f | 16.23 | 26.92 | c | |||||||||
1944 | 6.90 | 20.54 | a | 20.90 | 24.57 | 28.32 | 35.27 | 38.61 | 34.74 | 31.70 | 30.15 | d | 20.97 | 17.68 | 25.86 | |||||||||||
1945 | 17.81 | 21.50 | 19.32 | ----- | z | 34.03 | 33.10 | 36.00 | 35.39 | 27.23 | 23.32 | 25.63 | 18.24 | b | 26.51 | a | ||||||||||
1946 | 10.85 | e | 16.64 | 23.93 | a | 22.53 | 27.23 | 33.77 | 35.96 | c | 33.68 | 25.27 | 19.43 | a | 21.97 | a | 19.52 | 24.23 | ||||||||
1947 | 8.23 | a | ----- | z | 20.29 | 22.90 | 30.71 | 34.30 | 35.90 | 32.94 | 28.53 | 28.90 | 22.33 | 19.42 | 25.86 | a | ||||||||||
1948 | 14.80 | a | 12.68 | a | 19.29 | 22.57 | 28.52 | 37.87 | ----- | z | 31.93 | a | 27.17 | 20.35 | 19.81 | d | 10.26 | 22.29 | a | |||||||
1949 | -5.42 | 16.00 | a | 23.81 | j | 20.67 | ----- | z | 29.25 | n | 34.97 | a | 34.52 | 29.05 | i | 14.96 | f | 25.53 | 17.84 | 20.59 | e | |||||
1950 | 15.74 | 20.64 | 24.29 | 20.62 | a | 27.13 | 35.03 | 33.45 | 35.52 | 29.62 | d | 31.80 | f | 30.77 | 30.23 | 27.55 | a | |||||||||
1951 | 21.92 | r | ----- | z | ----- | z | 24.05 | i | 28.05 | j | 31.17 | 35.19 | 32.77 | 26.47 | 23.97 | 19.12 | d | 10.75 | g | 28.11 | f | |||||
1952 | 14.58 | g | 15.41 | 19.58 | 26.27 | 31.16 | 34.83 | 38.06 | 35.33 | a | 29.80 | 20.81 | 6.27 | 13.45 | 24.63 | a | ||||||||||
1953 | 25.74 | 20.32 | 19.58 | 17.90 | 24.83 | a | 27.93 | 31.42 | 33.65 | ----- | z | ----- | z | ----- | z | ----- | z | 25.17 | d | |||||||
1954 | ----- | z | 19.64 | 16.52 | 21.37 | 26.00 | 30.63 | c | ----- | z | 29.68 | 23.63 | 17.77 | 20.52 | a | 11.61 | 21.74 | b | ||||||||
1955 | 5.30 | a | 16.11 | 19.71 | 20.19 | c | 25.03 | 34.27 | 31.74 | 28.58 | 25.80 | 23.07 | a | 19.10 | 18.61 | 22.29 | ||||||||||
1956 | ----- | z | ----- | z | ----- | z | 28.15 | j | 32.80 | p | 33.73 | 38.87 | 33.10 | 27.53 | 25.90 | 14.00 | 12.63 | a | 26.54 | e | ||||||
1957 | 3.06 | 16.89 | 28.17 | b | 25.00 | 34.81 | 33.70 | j | 32.42 | 31.35 | ----- | z | ----- | z | ----- | z | ----- | z | 24.53 | e | ||||||
1958 | ----- | z | ----- | z | ----- | z | 21.23 | 31.35 | 37.80 | 36.45 | 36.13 | 26.13 | 21.77 | 20.66 | a | 18.84 | 27.82 | c | ||||||||
1959 | 22.40 | a | 18.50 | 20.13 | 19.23 | 23.29 | 31.73 | 35.89 | c | 33.00 | 33.10 | 25.37 | a | 14.80 | 8.87 | 23.86 | ||||||||||
1960 | 12.07 | c | 17.45 | 22.84 | 25.37 | 24.32 | 27.90 | 40.89 | d | 32.83 | a | 29.13 | 24.58 | 21.32 | b | 13.77 | 24.37 | |||||||||
1961 | 16.20 | a | 22.61 | j | 19.81 | 21.52 | i | 30.07 | p | 37.13 | 35.55 | 40.91 | h | 19.33 | x | 22.23 | i | ----- | z | ----- | z | 27.17 | h | |||
1962 | ----- | z | ----- | z | 22.43 | a | 22.10 | a | 30.69 | e | 30.73 | h | 34.26 | h | 35.93 | b | 31.33 | c | 24.74 | d | 23.93 | b | 17.73 | e | 26.11 | d |
1963 | 4.93 | d | 27.00 | m | 23.48 | f | 27.92 | e | 34.00 | j | 35.33 | l | 34.58 | l | 36.86 | b | 36.55 | j | 28.79 | c | 27.42 | k | 19.19 | e | 23.54 | g |
1964 | 14.73 | e | 15.12 | e | 18.62 | j | 20.68 | e | 24.55 | 33.96 | d | ----- | z | 32.78 | d | 23.93 | b | 22.52 | 14.60 | e | 18.26 | d | 22.11 | b | ||
1965 | 18.67 | a | 19.68 | 15.17 | a | 26.20 | 26.71 | 33.52 | c | 37.23 | 37.42 | 20.87 | 22.48 | 20.67 | 10.29 | 24.07 | ||||||||||
1966 | 16.71 | g | 12.89 | a | 18.71 | 20.38 | a | 25.06 | 32.25 | b | 33.19 | 34.17 | b | 30.24 | e | 21.00 | 23.47 | 20.19 | 24.69 | a | ||||||
1967 | 20.13 | a | 19.71 | 19.42 | 18.17 | a | 25.95 | j | 36.33 | 36.74 | 36.90 | 30.26 | c | 26.11 | c | 20.03 | 11.87 | 25.06 | a | |||||||
1968 | 15.35 | 24.00 | 18.00 | f | 18.40 | ----- | z | 36.14 | p | 37.48 | 38.75 | c | 29.03 | 22.86 | b | 21.00 | b | 14.13 | 24.56 | c | ||||||
1969 | 15.72 | b | 13.71 | 16.87 | 20.70 | c | 29.53 | a | 38.83 | a | 35.45 | 29.74 | 30.13 | 20.23 | 15.50 | 17.74 | d | 23.68 | ||||||||
1970 | 18.68 | 19.89 | 18.29 | 17.24 | a | 25.65 | 37.27 | d | 35.14 | c | 29.56 | d | 22.77 | 17.64 | c | 22.04 | g | 4.27 | p | 24.21 | b | |||||
1971 | 17.17 | b | 18.50 | 17.79 | b | 21.75 | f | 31.61 | 34.73 | 39.21 | g | 37.80 | f | 25.83 | 21.58 | 21.10 | 14.19 | 22.50 | c | |||||||
1972 | 14.82 | c | 21.07 | 25.61 | 22.17 | 28.33 | a | 35.47 | 37.33 | d | 37.39 | 24.42 | d | 23.61 | 24.08 | f | 5.79 | b | 25.09 | a | ||||||
1973 | 15.39 | c | 22.07 | 21.03 | 22.85 | c | 28.33 | a | ----- | z | ----- | z | ----- | z | 31.73 | 23.77 | a | 27.73 | d | 24.18 | c | 24.12 | c | |||
1974 | 12.93 | a | 20.36 | 23.55 | 23.43 | b | 26.96 | c | 34.12 | f | 40.08 | r | 34.33 | g | 27.44 | e | 18.21 | b | 21.87 | 10.46 | e | 20.58 | c | |||
1975 | 15.31 | e | 18.86 | 20.10 | 21.26 | c | 26.97 | a | 34.97 | a | 43.58 | 35.35 | h | 28.13 | 29.85 | e | 17.91 | g | 21.00 | 26.00 | b | |||||
1976 | 19.79 | b | 19.52 | 19.74 | d | 21.39 | b | 25.89 | d | 27.56 | l | 38.27 | e | 39.32 | c | 32.68 | e | 20.67 | a | 14.54 | b | 5.64 | f | 25.18 | b | |
1977 | 5.17 | b | 12.79 | 17.58 | 20.33 | 27.83 | b | 37.40 | 36.71 | 41.04 | h | 31.83 | 24.23 | 19.32 | b | 21.82 | i | 23.32 | b | |||||||
1978 | 23.97 | ----- | z | 25.52 | 23.96 | e | 24.58 | 33.93 | 37.61 | 37.45 | 27.83 | 19.79 | b | 8.92 | d | 7.84 | 24.67 | a | ||||||||
1979 | 8.03 | 22.44 | a | 24.14 | b | 25.60 | 30.80 | a | ----- | z | 37.68 | ----- | z | ----- | z | 31.71 | 18.60 | 19.77 | 24.31 | c | ||||||
1980 | 17.16 | 26.28 | 23.31 | e | 25.03 | 30.83 | a | 35.66 | a | ----- | z | 30.18 | c | 31.60 | 23.81 | 22.10 | 19.97 | 25.99 | a | |||||||
1981 | 21.77 | a | 18.57 | 22.85 | e | 25.59 | a | 29.97 | ----- | z | 32.90 | 36.32 | 30.64 | b | 24.10 | a | 21.40 | 22.52 | b | 26.06 | a | |||||
1982 | 10.84 | 17.39 | 22.94 | 19.36 | b | 26.39 | 36.23 | 39.43 | q | 36.52 | d | 29.27 | d | 24.13 | 12.93 | b | 15.70 | a | 22.88 | a | ||||||
1983 | 21.90 | 24.43 | 26.67 | a | 23.80 | j | 29.32 | c | 32.67 | 36.27 | a | 40.04 | e | 26.83 | r | 24.63 | d | 25.48 | a | 16.48 | d | 27.79 | b | |||
1984 | 12.97 | a | 21.21 | a | 26.23 | 25.47 | 27.09 | h | 31.60 | 36.70 | a | 34.67 | d | 29.80 | 25.42 | e | 22.81 | c | 8.72 | m | 26.69 | b | ||||
1985 | 10.76 | f | 14.93 | 18.07 | a | 24.03 | 29.52 | d | 32.67 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.84 | g | ||
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.80 | 32.33 | a | 36.66 | b | 28.54 | d | 20.45 | 24.25 | b | 12.30 | d | 27.47 | e | ||
1987 | 8.97 | 18.38 | b | 23.38 | e | 25.00 | f | 31.10 | b | 36.40 | 37.19 | d | 32.52 | d | 28.11 | c | 18.50 | e | 19.88 | d | 15.80 | f | 25.44 | b | ||
1988 | 10.44 | d | 14.59 | g | 19.93 | c | 28.14 | h | 26.96 | g | 35.08 | d | 33.10 | k | 30.06 | m | 24.91 | g | 21.60 | f | 18.44 | e | 9.23 | e | 18.62 | g |
1989 | 13.35 | e | 3.12 | d | 23.52 | h | 26.41 | a | 27.54 | c | 32.00 | b | 33.70 | d | 32.32 | i | 25.33 | i | 19.75 | g | 15.29 | i | 7.19 | d | 20.47 | e |
1990 | 17.16 | f | 9.76 | c | 18.04 | h | 23.81 | c | 24.19 | e | 31.79 | k | 32.50 | w | 35.58 | l | 28.41 | m | 15.81 | e | 17.77 | -1.83 | b | 14.92 | f | |
1991 | 9.06 | 19.93 | 20.40 | a | 21.93 | c | 28.56 | f | 30.08 | e | 37.93 | a | 37.41 | d | 28.43 | 19.74 | 25.77 | 16.23 | a | 24.27 | a | |||||
1992 | 12.80 | a | 23.34 | 18.45 | b | 25.70 | 28.58 | 35.05 | h | 36.93 | a | 33.87 | 26.53 | 20.90 | 14.07 | a | 5.66 | b | 22.44 | a | ||||||
1993 | -2.07 | b | 0.74 | a | 21.32 | 23.00 | a | 29.73 | a | 32.20 | 29.39 | 31.26 | 24.10 | a | 22.87 | 2.70 | 15.39 | 19.22 | ||||||||
1994 | 15.32 | 14.15 | a | 15.13 | a | 21.83 | 29.42 | 29.05 | h | 35.48 | 29.84 | 29.00 | 18.27 | a | 6.50 | b | 7.40 | a | 20.21 | a | ||||||
1995 | 17.57 | c | 18.79 | 16.16 | 20.67 | 28.19 | 32.60 | ----- | z | ----- | z | ----- | z | ----- | z | 20.38 | a | ----- | z | 22.05 | e | |||||
1996 | ----- | z | ----- | z | ----- | z | 23.80 | 29.52 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.66 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.10 | 17.79 | 21.10 | 23.16 | 28.40 | 33.89 | 36.32 | 34.42 | 28.54 | 23.40 | 19.50 | 15.18 | 24.17 | |||||||||||||
S.D. | 6.87 | 5.47 | 2.99 | 2.73 | 2.70 | 2.55 | 2.40 | 2.64 | 3.09 | 3.44 | 5.72 | 5.91 | 1.87 | |||||||||||||
SKEW | -0.77 | -1.00 | 0.11 | -0.11 | 0.02 | -0.29 | -0.23 | -0.11 | -0.22 | 0.19 | -0.73 | -0.23 | -1.37 | |||||||||||||
MAX | 27.61 | 26.28 | 28.17 | 28.93 | 34.81 | 38.83 | 43.58 | 40.04 | 37.00 | 31.71 | 30.77 | 30.23 | 26.53 | |||||||||||||
MIN | -5.42 | 0.74 | 15.13 | 17.24 | 23.00 | 27.90 | 29.39 | 28.58 | 20.70 | 15.81 | 2.70 | -1.83 | 19.22 | |||||||||||||
YRS | 64 | 64 | 66 | 68 | 67 | 63 | 61 | 63 | 64 | 64 | 64 | 64 | 13 |