YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 41.48 | c | 36.39 | 23.86 | b | 20.13 | 30.46 | h | ||
1960 | 21.69 | b | 25.79 | 31.45 | 33.70 | 37.13 | 47.77 | 53.84 | 47.38 | e | 43.93 | 36.48 | 30.23 | 25.39 | 36.23 | |||||||||||
1961 | 25.60 | a | 30.86 | 31.58 | 33.57 | 38.42 | 50.03 | a | 51.32 | 53.00 | d | 41.83 | 36.30 | a | 26.30 | 23.90 | 36.89 | |||||||||
1962 | 15.73 | a | 25.75 | 28.17 | a | 34.73 | 37.70 | a | 44.14 | b | 48.28 | b | 49.26 | 44.50 | 36.29 | 32.17 | 25.16 | 35.16 | ||||||||
1963 | 17.39 | 31.86 | 29.74 | 32.87 | 41.77 | a | 45.00 | 46.46 | c | 49.80 | a | 47.00 | 37.32 | 31.27 | 26.57 | a | 36.42 | |||||||||
1964 | 24.29 | 22.28 | 27.72 | b | 30.53 | 36.00 | 45.10 | 49.30 | d | 47.72 | b | 40.10 | 36.67 | a | 29.04 | c | 30.21 | b | 34.91 | |||||||
1965 | 26.16 | 26.00 | 28.81 | 37.11 | b | 37.57 | c | 45.85 | c | 49.52 | b | 51.56 | d | 39.63 | c | 36.41 | d | 32.28 | e | 22.61 | c | 36.12 | ||||
1966 | 21.61 | 23.68 | 29.63 | a | 34.56 | c | 41.60 | a | 45.58 | d | 47.55 | b | 51.30 | a | 45.03 | 34.10 | a | 32.63 | 28.39 | 36.31 | ||||||
1967 | 25.00 | a | 25.93 | 28.55 | b | 28.96 | d | 39.30 | a | 46.13 | 52.70 | a | 52.76 | b | 46.63 | c | 34.94 | 31.17 | 16.93 | b | 35.75 | |||||
1968 | 19.93 | a | 30.63 | b | 30.13 | a | 31.28 | a | 36.40 | a | 45.80 | 53.03 | 48.00 | b | 42.29 | b | 34.45 | 31.60 | 21.26 | 35.40 | ||||||
1969 | 19.06 | 23.21 | 25.87 | a | 32.53 | 39.42 | 49.18 | b | ----- | z | 47.50 | a | 44.13 | 32.32 | 27.03 | 27.65 | 33.45 | a | ||||||||
1970 | 28.87 | 27.52 | a | 29.67 | a | 28.93 | a | 38.63 | a | 49.59 | a | 51.90 | a | 49.32 | 39.46 | b | 32.48 | b | 33.38 | a | 22.58 | 36.03 | ||||
1971 | 22.68 | c | 24.19 | a | 27.65 | 31.77 | 39.19 | 43.27 | 50.16 | 52.26 | 41.20 | 32.48 | 28.83 | 21.10 | 34.56 | |||||||||||
1972 | 19.55 | 25.72 | 32.84 | 32.87 | 40.00 | 46.77 | 51.94 | 50.84 | 40.30 | 34.19 | 29.53 | 17.32 | 35.16 | |||||||||||||
1973 | 22.58 | 29.14 | 28.06 | 31.87 | 41.10 | 44.97 | 51.35 | 48.19 | 41.57 | 33.03 | 32.37 | 29.80 | a | 36.17 | ||||||||||||
1974 | 20.29 | 23.76 | g | 28.91 | h | 32.48 | e | ----- | z | 47.00 | i | 48.45 | i | 49.04 | e | 43.76 | e | 34.81 | j | 29.52 | c | 26.94 | 33.67 | f | ||
1975 | 18.55 | b | 23.04 | 29.10 | 28.67 | 37.13 | 43.83 | 50.76 | b | 46.87 | 45.07 | 38.55 | 30.00 | 31.65 | 35.27 | |||||||||||
1976 | 27.84 | 26.17 | 27.29 | 31.53 | 38.16 | 41.93 | 51.42 | 50.58 | 47.60 | e | 34.97 | 32.37 | 22.19 | 36.00 | ||||||||||||
1977 | 17.94 | 26.70 | a | 28.65 | 30.33 | 35.30 | a | 50.17 | 49.77 | a | 52.87 | 45.17 | 36.48 | 30.24 | a | 29.61 | 36.10 | |||||||||
1978 | 30.60 | a | 29.86 | 34.55 | 33.30 | 37.26 | 45.03 | 50.77 | 49.61 | 42.50 | 37.35 | ----- | z | 22.06 | 37.54 | a | ||||||||||
1979 | 23.10 | 30.11 | 34.10 | 35.27 | 41.81 | 45.27 | 53.35 | 48.77 | 43.67 | 39.42 | 26.83 | 27.61 | 37.44 | |||||||||||||
1980 | 25.10 | 31.68 | d | 29.74 | 34.00 | 38.97 | 43.03 | 52.13 | 47.16 | 45.30 | 39.84 | 30.07 | 27.94 | 37.08 | ||||||||||||
1981 | 31.19 | 29.71 | 31.55 | 35.87 | 40.26 | 46.13 | 48.84 | 50.32 | 44.60 | 35.80 | a | 33.70 | 33.06 | 38.42 | ||||||||||||
1982 | 20.90 | 27.54 | 29.65 | 31.67 | 38.87 | 46.97 | 47.10 | a | 50.77 | 42.13 | 39.10 | 30.00 | 26.35 | 35.92 | ||||||||||||
1983 | 28.94 | 33.11 | 36.03 | 34.10 | 41.87 | 44.53 | 47.87 | 52.81 | 44.17 | 38.71 | 34.03 | a | ----- | z | 39.65 | a | ||||||||||
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.13 | 52.61 | 53.84 | 45.86 | a | 39.10 | 35.47 | 27.65 | 42.81 | e | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.11 | 27.41 | 30.02 | 32.60 | 38.86 | 45.88 | 50.52 | 50.06 | 43.42 | 36.13 | 30.56 | 25.36 | 36.07 | |||||||||||||
S.D. | 4.31 | 3.13 | 2.50 | 2.19 | 1.93 | 2.18 | 2.11 | 2.09 | 2.30 | 2.26 | 2.66 | 4.25 | 0.91 | |||||||||||||
SKEW | 0.28 | 0.11 | 0.80 | -0.06 | 0.07 | 0.53 | -0.32 | 0.15 | -0.08 | -0.11 | -0.54 | -0.25 | 0.71 | |||||||||||||
MAX | 31.19 | 33.11 | 36.03 | 37.11 | 41.87 | 50.17 | 53.84 | 53.84 | 47.60 | 39.84 | 35.47 | 33.06 | 38.42 | |||||||||||||
MIN | 15.73 | 22.28 | 25.87 | 28.67 | 35.30 | 41.93 | 46.46 | 46.87 | 39.46 | 32.32 | 23.86 | 16.93 | 34.56 | |||||||||||||
YRS | 24 | 23 | 23 | 24 | 23 | 24 | 23 | 25 | 26 | 25 | 25 | 25 | 20 |