YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.70 | a | 8.70 | k |
1932 | 10.42 | 8.90 | 23.55 | 28.67 | 34.68 | 38.33 | 39.77 | 37.87 | 28.60 | 28.16 | 27.90 | 8.71 | 26.30 | |||||||||||||
1933 | 15.59 | b | 7.89 | 23.77 | 26.30 | 31.03 | 41.03 | 40.87 | 40.52 | 33.37 | 31.10 | 21.43 | 27.23 | 28.34 | ||||||||||||
1934 | 24.39 | 26.18 | 26.87 | 31.38 | a | 36.13 | 38.53 | 42.94 | 41.65 | 31.80 | 30.77 | 30.62 | a | 20.58 | 31.82 | |||||||||||
1935 | 13.97 | a | 22.04 | 22.29 | 27.37 | 31.35 | 37.40 | 41.52 | 37.39 | 33.23 | 28.58 | 18.60 | 15.39 | 27.43 | ||||||||||||
1936 | 16.77 | 8.86 | 22.58 | 30.77 | 38.06 | 43.17 | 43.61 | 39.29 | 32.20 | 25.16 | 12.17 | 18.16 | 27.57 | |||||||||||||
1937 | -4.94 | 14.36 | 25.06 | 28.80 | 33.29 | 39.47 | 43.19 | 36.55 | 35.00 | 32.26 | 29.30 | 24.45 | 28.07 | |||||||||||||
1938 | 21.23 | 20.04 | a | 24.13 | 30.34 | a | 33.03 | 40.80 | 44.77 | 36.39 | 39.10 | 32.52 | 19.60 | 18.94 | 30.07 | |||||||||||
1939 | 17.84 | 13.75 | 22.13 | 27.73 | 33.52 | 36.27 | 42.87 | 38.35 | 33.33 | 28.58 | 20.13 | 24.10 | 28.22 | |||||||||||||
1940 | 18.35 | 24.17 | 26.39 | 29.87 | 34.06 | 38.67 | 42.55 | 37.06 | 42.70 | 33.87 | a | 20.00 | 19.45 | 30.60 | ||||||||||||
1941 | 18.45 | 22.07 | 24.94 | 30.00 | 37.26 | 42.13 | 45.27 | a | 44.55 | 36.20 | 29.58 | 24.13 | 21.13 | a | 31.31 | |||||||||||
1942 | 8.62 | b | 11.86 | 18.81 | 31.17 | 36.13 | 37.57 | 43.71 | 40.77 | 34.10 | 30.35 | 23.87 | 20.97 | 28.16 | ||||||||||||
1943 | 8.71 | 17.11 | 19.71 | 31.83 | 32.65 | 37.73 | 43.48 | 39.84 | 34.17 | 31.13 | 23.40 | 13.71 | 27.79 | |||||||||||||
1944 | 11.90 | 18.79 | 20.71 | 29.33 | 35.52 | 39.97 | 41.19 | 35.71 | 35.50 | 29.84 | 19.93 | 11.65 | 27.50 | |||||||||||||
1945 | 17.35 | 23.36 | 23.97 | 27.70 | 35.06 | 38.93 | 40.87 | 39.97 | 33.50 | 29.39 | 23.47 | 14.19 | 28.98 | |||||||||||||
1946 | 15.45 | 15.82 | 26.55 | 27.77 | q | 33.68 | 40.67 | 44.32 | 40.52 | 36.41 | a | 26.39 | 23.30 | 22.19 | 29.57 | a | ||||||||||
1947 | 9.42 | 23.68 | 26.65 | 29.10 | 37.06 | 39.60 | 41.90 | 38.03 | 37.20 | 35.87 | 24.57 | 20.45 | 30.29 | |||||||||||||
1948 | 14.58 | 17.55 | 20.06 | 28.67 | 35.10 | 44.63 | 42.45 | 39.87 | 33.24 | a | 26.48 | 22.60 | 5.94 | 27.60 | ||||||||||||
1949 | -7.94 | 15.04 | 24.87 | 28.13 | 38.45 | 36.77 | 39.47 | a | 40.03 | 35.47 | 24.94 | 25.33 | 18.42 | 26.58 | ||||||||||||
1950 | 7.29 | 16.36 | 24.13 | 27.63 | 30.97 | b | 40.73 | 41.77 | 40.58 | 34.87 | 34.94 | 25.63 | 26.84 | 29.31 | ||||||||||||
1951 | 14.16 | 17.96 | 19.97 | a | 25.50 | 34.97 | a | 37.07 | 43.42 | 40.32 | 34.67 | 30.60 | a | 21.47 | 14.42 | 27.88 | ||||||||||
1952 | 10.97 | a | 11.45 | 19.84 | 28.50 | 36.42 | 41.00 | 41.16 | 40.61 | 35.83 | 26.90 | 13.00 | 17.71 | 26.95 | ||||||||||||
1953 | 27.84 | 18.86 | 23.32 | 28.03 | 31.00 | 36.73 | 39.39 | 41.50 | a | 35.50 | 28.06 | 27.03 | 19.77 | 29.75 | ||||||||||||
1954 | 19.81 | 24.36 | 19.06 | 28.45 | a | 33.87 | 36.63 | 41.65 | 37.87 | 33.13 | 25.90 | 24.30 | 12.35 | 28.12 | ||||||||||||
1955 | 12.74 | 9.96 | 12.29 | 27.70 | 32.94 | 39.57 | 45.43 | a | 37.00 | a | 34.33 | 30.55 | 18.93 | 16.35 | 26.48 | |||||||||||
1956 | 12.84 | 11.90 | 20.39 | 28.70 | 37.61 | 37.37 | 44.19 | 40.16 | 34.27 | d | 29.48 | 16.63 | 16.48 | 27.50 | ||||||||||||
1957 | 2.61 | 15.89 | 25.80 | a | 30.03 | 39.71 | 42.07 | 40.55 | 38.35 | 34.17 | 31.58 | 18.20 | 19.26 | 28.19 | ||||||||||||
1958 | 17.16 | 25.50 | 21.84 | 29.17 | 38.13 | 43.90 | 44.61 | 43.03 | 34.43 | 27.26 | 22.23 | 23.39 | 30.89 | |||||||||||||
1959 | 19.74 | 21.14 | 24.45 | 28.43 | 31.55 | 40.47 | 39.97 | 38.00 | 38.37 | 29.87 | 18.40 | 14.74 | 28.76 | |||||||||||||
1960 | 6.94 | 15.17 | 20.74 | 29.33 | 32.29 | 36.53 | 43.65 | 40.16 | 36.07 | 30.03 | 22.70 | 16.23 | 27.49 | |||||||||||||
1961 | 17.81 | 27.93 | 26.19 | 28.90 | 36.23 | 40.83 | 43.58 | 46.10 | 31.40 | 26.90 | 18.40 | 16.42 | 30.06 | |||||||||||||
1962 | 11.23 | 18.61 | 21.97 | 29.40 | 36.23 | 37.77 | 40.00 | 40.81 | 34.27 | 30.35 | 24.47 | 19.94 | 28.75 | |||||||||||||
1963 | 6.74 | 26.68 | 25.03 | 27.37 | 36.55 | 40.30 | 39.48 | 41.32 | 38.07 | 30.23 | 25.23 | 13.29 | 29.19 | |||||||||||||
1964 | 12.03 | 11.34 | 19.87 | 25.80 | 32.55 | 40.97 | 43.35 | 38.29 | 33.40 | 29.32 | 22.43 | 15.52 | 27.07 | |||||||||||||
1965 | 19.32 | 21.21 | 18.90 | 31.27 | 30.58 | 38.38 | a | 42.26 | 42.06 | 30.80 | 28.77 | 26.00 | 16.29 | 28.82 | ||||||||||||
1966 | 19.74 | 15.32 | 21.06 | 27.03 | 33.65 | 38.23 | 40.35 | 39.13 | 38.63 | 28.90 | 25.93 | 21.26 | 29.10 | |||||||||||||
1967 | 23.84 | 22.71 | 22.94 | 25.62 | a | 31.23 | 41.13 | 42.29 | 42.32 | 37.73 | 29.84 | 22.93 | 17.48 | 30.01 | ||||||||||||
1968 | 14.06 | 24.97 | 26.06 | 25.10 | 33.87 | 41.20 | 41.55 | 40.09 | i | 39.27 | 29.67 | a | 25.30 | 16.42 | 28.86 | a | ||||||||||
1969 | 14.58 | 13.96 | 20.74 | 29.97 | 37.13 | 43.33 | 41.55 | 39.61 | 38.70 | 27.10 | 21.40 | 22.16 | 29.19 | |||||||||||||
1970 | 21.32 | 23.71 | 22.84 | 24.03 | 33.71 | 45.07 | c | 47.00 | 41.55 | 34.17 | 28.10 | 24.64 | b | 12.93 | a | 29.92 | ||||||||||
1971 | 19.81 | 21.79 | 20.97 | 27.43 | 36.16 | 39.90 | 43.37 | a | 45.90 | 31.53 | 26.00 | 22.50 | 14.43 | a | 29.15 | |||||||||||
1972 | 12.94 | 18.90 | 27.77 | 27.37 | 36.39 | 42.15 | d | 43.74 | 44.03 | 33.77 | 29.17 | a | 25.13 | 9.50 | a | 29.24 | ||||||||||
1973 | 11.00 | 17.39 | 24.37 | a | ----- | z | 34.03 | 40.50 | 43.61 | 41.84 | 37.53 | 29.26 | 24.73 | 23.63 | a | 29.81 | a | |||||||||
1974 | 11.97 | 24.86 | 25.69 | b | 31.60 | 34.80 | a | 43.20 | 44.90 | 43.67 | j | 35.43 | 24.77 | 25.33 | 19.97 | 29.32 | a | |||||||||
1975 | 17.16 | 17.68 | 25.68 | 32.67 | 35.94 | 39.10 | 50.77 | 41.39 | 34.20 | 31.48 | 19.63 | 21.90 | 30.63 | |||||||||||||
1976 | 14.32 | 16.69 | 19.97 | 28.53 | 37.66 | b | 38.93 | 42.00 | 43.67 | g | 36.20 | 25.39 | 20.80 | 14.52 | 26.82 | a | ||||||||||
1977 | 8.13 | a | 19.82 | 22.03 | 34.69 | n | 33.42 | 46.80 | 43.23 | 45.35 | 38.53 | 29.97 | b | 23.80 | 20.71 | 30.16 | a | |||||||||
1978 | 18.70 | d | 21.43 | 28.94 | 30.67 | 35.90 | 39.53 | 45.58 | 45.63 | a | 38.60 | 24.90 | 16.80 | 6.19 | 29.41 | |||||||||||
1979 | 1.00 | 21.14 | 26.21 | b | 30.03 | 34.68 | 38.20 | ----- | z | ----- | z | 36.10 | 30.84 | 15.20 | 21.45 | 25.49 | b | |||||||||
1980 | 10.32 | 24.93 | 25.61 | 31.10 | 35.94 | 39.16 | e | 44.87 | ----- | z | 33.60 | 28.39 | 21.10 | 20.00 | 28.64 | a | ||||||||||
1981 | 22.03 | a | 21.15 | a | 23.90 | 30.17 | 35.87 | 38.93 | b | 42.81 | 42.19 | 34.43 | 27.60 | a | ----- | z | ----- | z | 31.91 | b | ||||||
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 | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.81 | 18.64 | 23.03 | 28.78 | 34.76 | 39.95 | 42.79 | 40.43 | 35.14 | 29.14 | 22.26 | 17.52 | 28.74 | |||||||||||||
S.D. | 6.89 | 5.16 | 3.03 | 1.90 | 2.24 | 2.39 | 2.14 | 2.59 | 2.57 | 2.49 | 3.82 | 4.91 | 1.36 | |||||||||||||
SKEW | -0.89 | -0.28 | -0.74 | -0.29 | -0.07 | 0.69 | 0.94 | 0.44 | 0.31 | 0.32 | -0.48 | -0.38 | 0.23 | |||||||||||||
MAX | 27.84 | 27.93 | 28.94 | 32.67 | 39.71 | 46.80 | 50.77 | 46.10 | 42.70 | 35.87 | 30.62 | 27.23 | 31.82 | |||||||||||||
MIN | -7.94 | 7.89 | 12.29 | 24.03 | 30.58 | 36.27 | 39.39 | 35.71 | 28.60 | 24.77 | 12.17 | 5.94 | 26.30 | |||||||||||||
YRS | 50 | 50 | 50 | 47 | 50 | 50 | 49 | 45 | 50 | 50 | 49 | 50 | 41 |