YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.97 | o | 65.43 | a | 55.95 | a | 43.10 | 31.77 | 30.98 | a | 45.45 | g | ||
1947 | 20.17 | a | 30.59 | a | 35.15 | 43.16 | b | 53.83 | a | 56.28 | c | 66.74 | 65.06 | 58.92 | 48.65 | a | 27.10 | 22.69 | 44.03 | |||||||
1948 | 22.00 | b | 22.68 | a | 26.94 | 42.32 | 52.53 | 59.45 | 65.82 | 63.65 | 58.29 | d | 43.13 | 26.42 | 23.03 | 42.19 | ||||||||||
1949 | 11.06 | 20.16 | 36.55 | 45.60 | 51.48 | 57.81 | a | 64.84 | 63.53 | 56.02 | 41.26 | 38.07 | 23.77 | 42.51 | ||||||||||||
1950 | 21.52 | 25.89 | a | 32.53 | 41.28 | 46.15 | 53.90 | 60.03 | 59.90 | 53.08 | 46.74 | 35.57 | a | 27.84 | 42.04 | |||||||||||
1951 | 20.22 | a | 29.66 | 31.89 | 41.88 | 50.98 | 55.53 | 66.10 | 63.15 | 54.25 | 42.95 | 27.65 | 21.68 | 42.16 | ||||||||||||
1952 | 17.60 | 19.72 | 25.78 | b | 42.83 | 50.68 | 60.12 | 64.50 | 62.77 | 56.83 | 45.60 | 26.07 | 22.19 | 41.22 | ||||||||||||
1953 | 30.40 | 23.21 | 35.10 | 38.97 | 47.06 | 59.87 | 67.87 | 62.79 | 55.78 | 44.34 | 36.02 | 22.55 | 43.66 | |||||||||||||
1954 | 27.89 | 31.71 | 32.02 | 45.65 | 52.00 | a | 58.78 | 68.72 | a | 63.03 | 56.98 | 47.11 | 35.57 | 21.82 | 45.11 | |||||||||||
1955 | 19.24 | 17.96 | 29.79 | 38.43 | a | 48.69 | 55.57 | 65.03 | 64.84 | 55.32 | 42.19 | 30.60 | 30.00 | 41.47 | ||||||||||||
1956 | 31.28 | a | 18.97 | 31.76 | 40.90 | 51.18 | n | 61.93 | g | 64.65 | a | 60.89 | 56.50 | 43.85 | 25.20 | 18.29 | 39.23 | b | ||||||||
1957 | ----- | z | ----- | z | ----- | z | ----- | z | 53.83 | y | 59.32 | 66.27 | t | 63.28 | o | 53.92 | 46.19 | 28.82 | b | 25.97 | 42.84 | g | ||||
1958 | 21.87 | 32.93 | a | 31.85 | 39.15 | 51.50 | b | 59.12 | b | 62.18 | a | 64.29 | 53.97 | 41.98 | 29.25 | d | 28.47 | 43.05 | ||||||||
1959 | 22.57 | b | 25.86 | 31.32 | 40.92 | 49.68 | 62.14 | a | 65.81 | 64.00 | 55.05 | a | 43.48 | 33.53 | 25.47 | 43.32 | ||||||||||
1960 | 19.69 | 18.57 | 34.53 | 44.13 | 50.24 | 60.30 | 65.85 | 64.52 | 59.47 | 45.56 | 35.75 | 22.82 | 43.45 | |||||||||||||
1961 | 22.06 | 30.20 | 35.32 | 41.05 | 52.08 | 62.18 | 67.08 | 66.82 | 51.02 | 43.81 | 30.62 | a | 22.40 | 43.72 | ||||||||||||
1962 | 16.40 | 29.82 | 27.65 | 45.66 | a | 51.06 | 59.05 | a | 64.55 | 62.87 | 56.60 | 47.07 | a | 37.42 | 24.37 | 43.54 | ||||||||||
1963 | 14.77 | 32.30 | a | 32.87 | a | 41.68 | 53.02 | a | 58.07 | 66.40 | 64.87 | 57.97 | 50.05 | 35.85 | 21.52 | a | 44.11 | |||||||||
1964 | 17.81 | 17.91 | 26.00 | 40.37 | 51.10 | 58.00 | 68.18 | 61.98 | 55.17 | 47.21 | 30.33 | a | 26.70 | c | 41.73 | |||||||||||
1965 | 26.12 | a | 24.28 | a | 26.66 | 42.03 | 49.87 | a | 56.81 | a | 64.71 | 61.66 | 51.33 | l | ----- | z | 37.40 | 24.27 | 41.38 | b | ||||||
1966 | 20.10 | 20.39 | 33.37 | a | 39.28 | 50.85 | 57.77 | 67.26 | 62.77 | 55.07 | b | 42.05 | 37.20 | 19.15 | 42.10 | |||||||||||
1967 | 21.79 | 27.41 | 39.55 | 42.88 | a | 49.57 | a | 57.28 | a | 66.95 | 65.74 | 57.83 | 46.63 | 35.48 | 16.93 | a | 44.00 | |||||||||
1968 | 16.38 | a | 26.78 | 34.37 | 35.83 | a | 47.32 | 57.97 | 64.05 | 59.42 | 51.69 | a | 43.89 | 30.58 | 20.37 | 40.72 | ||||||||||
1969 | 26.61 | 24.39 | 27.60 | 44.78 | 54.33 | a | 56.83 | 67.52 | 67.60 | 57.78 | 38.34 | 30.22 | 25.60 | 43.47 | ||||||||||||
1970 | 24.60 | 32.20 | 31.20 | a | 37.38 | b | 51.10 | 58.05 | 65.92 | a | 66.84 | 53.00 | a | 38.29 | b | 34.65 | 25.68 | 43.24 | ||||||||
1971 | 25.40 | a | 24.62 | c | 31.73 | 40.71 | a | 48.30 | a | 58.71 | a | 66.87 | 66.32 | a | 49.56 | e | 42.31 | 29.98 | 20.23 | 42.06 | ||||||
1972 | 24.62 | a | 29.57 | 39.00 | 43.40 | 49.79 | 61.11 | b | 65.26 | 62.97 | 55.30 | c | 46.38 | c | 28.85 | 15.88 | a | 43.51 | ||||||||
1973 | 13.03 | 19.45 | 31.19 | 38.02 | 49.10 | 57.52 | 63.80 | d | 65.42 | 53.47 | 45.18 | c | 31.75 | 21.92 | e | 40.82 | ||||||||||
1974 | 18.23 | r | 20.86 | 37.23 | 40.03 | 52.30 | a | 61.02 | 65.98 | a | 61.68 | 53.35 | 45.29 | 33.03 | 18.74 | 44.50 | a | |||||||||
1975 | 20.31 | 25.02 | 34.24 | j | 37.91 | a | 46.81 | 55.52 | a | 65.97 | 61.19 | 53.37 | 43.32 | 30.22 | a | 25.23 | a | 42.26 | a | |||||||
1976 | 20.10 | 29.90 | 28.98 | 42.20 | 51.97 | 58.98 | f | 67.05 | a | 62.44 | 55.98 | 41.05 | 31.15 | 23.26 | 41.28 | a | ||||||||||
1977 | 22.00 | 28.29 | 30.86 | c | 44.45 | 49.94 | 63.78 | 67.06 | 64.79 | c | 56.76 | a | 45.11 | 33.95 | 30.05 | b | 44.75 | |||||||||
1978 | 26.63 | 28.96 | 37.27 | 43.28 | 48.87 | 58.72 | 64.95 | 61.58 | 53.16 | a | 43.78 | d | 29.62 | 14.61 | 42.62 | |||||||||||
1979 | 13.03 | a | 24.55 | 32.68 | 40.13 | 49.35 | 58.05 | 63.56 | 61.71 | 56.95 | 45.24 | 24.83 | a | 21.65 | 40.98 | |||||||||||
1980 | 24.65 | 29.07 | 31.93 | d | ----- | z | 47.87 | h | ----- | z | 66.14 | i | 61.39 | 53.20 | 41.67 | a | 29.84 | e | 31.02 | 37.84 | d | |||||
1981 | 26.31 | 26.04 | 32.92 | a | 42.62 | a | 48.31 | 58.98 | 64.02 | a | 60.68 | 55.65 | 44.00 | s | ----- | z | ----- | z | 46.17 | c | ||||||
1982 | 17.57 | k | 21.07 | e | 30.33 | a | 34.03 | a | 44.66 | b | 56.10 | 63.22 | b | 65.20 | a | 61.20 | y | ----- | z | ----- | z | 11.70 | u | 44.94 | e | |
1983 | 22.29 | c | 26.85 | e | 31.31 | 35.17 | 44.83 | a | 54.25 | 63.73 | a | 65.82 | 56.26 | e | 42.30 | c | 28.98 | h | 17.70 | h | 44.28 | b | ||||
1984 | 9.94 | f | 16.16 | d | 27.33 | b | 34.97 | 49.82 | a | 52.85 | c | 62.92 | 63.59 | b | 55.63 | c | 40.23 | g | 32.50 | f | 21.42 | 42.74 | c | |||
1985 | 16.54 | d | 19.96 | e | 32.72 | b | 44.24 | c | 52.52 | c | 59.45 | a | 66.92 | 64.15 | d | 53.73 | f | 34.25 | g | 31.79 | b | 21.57 | c | 40.98 | b | |
1986 | 24.84 | 32.84 | c | 39.00 | e | 42.52 | a | 47.10 | f | 61.41 | c | 64.40 | a | 64.42 | 52.28 | a | 42.42 | 32.12 | b | 24.24 | b | 43.68 | a | |||
1987 | 19.52 | b | 28.09 | a | 30.52 | b | 44.04 | g | 51.40 | a | 60.00 | 62.74 | 60.95 | c | 52.46 | e | 44.41 | c | 29.60 | d | 18.83 | d | 41.68 | a | ||
1988 | 15.45 | c | 22.44 | b | 29.85 | d | 41.70 | c | 49.20 | f | 61.02 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.00 | d | 26.09 | g |
1989 | 16.37 | h | 16.76 | a | 35.64 | b | 42.90 | a | 49.65 | e | 57.74 | g | 65.89 | c | 61.50 | b | 54.12 | d | 40.96 | r | 31.74 | a | 19.25 | c | 41.94 | c |
1990 | 20.19 | d | 22.46 | a | ----- | z | 44.83 | 48.43 | c | 59.29 | d | 63.98 | e | ----- | z | ----- | z | ----- | z | ----- | z | 10.35 | a | 38.50 | e | |
1991 | 7.02 | 21.89 | 33.67 | b | 39.75 | 51.18 | 58.93 | h | 64.71 | c | 64.03 | 52.92 | ----- | z | ----- | z | ----- | z | 41.90 | d | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.85 | 24.96 | 32.24 | 41.17 | 50.06 | 58.38 | 65.33 | 63.45 | 55.04 | 44.11 | 31.68 | 22.71 | 42.80 | |||||||||||||
S.D. | 5.13 | 4.84 | 3.52 | 2.96 | 2.24 | 2.34 | 1.77 | 1.97 | 2.21 | 2.54 | 3.58 | 4.32 | 1.20 | |||||||||||||
SKEW | -0.36 | -0.04 | 0.14 | -0.60 | -0.53 | -0.15 | -0.50 | 0.05 | -0.19 | -0.08 | 0.04 | -0.25 | -0.08 | |||||||||||||
MAX | 31.28 | 32.93 | 39.55 | 45.66 | 54.33 | 63.78 | 68.72 | 67.60 | 59.47 | 50.05 | 38.07 | 31.02 | 45.11 | |||||||||||||
MIN | 7.02 | 16.16 | 25.78 | 34.03 | 44.66 | 52.85 | 60.03 | 59.42 | 49.56 | 38.29 | 24.83 | 10.35 | 40.72 | |||||||||||||
YRS | 40 | 44 | 42 | 42 | 40 | 39 | 42 | 43 | 41 | 37 | 39 | 42 | 27 |