YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.60 | a | 57.71 | j | 48.04 | g | 35.65 | 22.43 | 15.16 | 32.96 | h | |||
1929 | 26.37 | a | 23.04 | 13.13 | 30.32 | e | 48.68 | 64.17 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.31 | g | |||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.36 | i | 26.20 | 7.68 | 16.94 | j | ||
1967 | 16.84 | 17.07 | 32.13 | 37.97 | 53.77 | 64.13 | 63.14 | c | 62.84 | 55.33 | 34.39 | 25.83 | 15.35 | 39.90 | ||||||||||||
1968 | 15.42 | 10.90 | 26.74 | 33.83 | 51.55 | 65.93 | 70.13 | 64.03 | 52.52 | a | 33.48 | 19.80 | 5.39 | 37.48 | ||||||||||||
1969 | 10.52 | 16.25 | 26.87 | 39.00 | 57.74 | 63.20 | 63.58 | 58.94 | 57.97 | 41.32 | 16.03 | 20.65 | 39.34 | |||||||||||||
1970 | -1.32 | 22.14 | 27.55 | 32.57 | 57.52 | 65.00 | 62.43 | a | 60.29 | 50.77 | 24.60 | p | 33.14 | a | 10.81 | 38.26 | a | |||||||||
1971 | 1.14 | c | 7.00 | a | 13.43 | a | 29.86 | a | 42.57 | a | 61.90 | a | 63.17 | h | ----- | z | 51.13 | o | 36.45 | b | 21.70 | 16.10 | 25.57 | c | ||
1972 | 8.45 | 13.28 | 13.13 | 27.73 | 47.45 | 59.40 | 69.45 | 64.97 | 52.00 | 39.74 | 22.20 | 14.03 | 35.99 | |||||||||||||
1973 | -0.39 | c | ----- | z | ----- | z | 32.18 | s | 41.10 | 54.60 | 63.10 | 59.53 | a | 52.83 | 34.90 | b | 24.43 | b | 11.72 | b | 37.98 | c | ||||
1974 | 10.94 | -1.75 | 23.61 | h | 35.34 | a | 55.13 | 64.23 | 63.30 | a | 63.70 | a | 58.53 | 31.03 | 29.08 | q | ----- | z | 42.27 | c | ||||||
1975 | ----- | z | ----- | z | 30.62 | j | 30.33 | 48.61 | 61.66 | a | 66.16 | 61.16 | 48.93 | 36.90 | ----- | z | ----- | z | 50.54 | e | ||||||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.67 | 64.87 | 63.74 | 53.07 | 36.90 | 25.17 | 12.39 | 45.11 | e | |||||||
1977 | 28.13 | a | 23.07 | ----- | z | 25.93 | a | 44.55 | 64.20 | 65.53 | a | 67.57 | a | 57.63 | 37.87 | ----- | z | 13.39 | 42.79 | b | ||||||
1978 | 25.23 | 20.11 | a | 25.19 | ----- | z | 56.29 | 55.34 | a | 64.94 | 66.84 | 55.23 | 33.94 | 29.82 | h | 25.14 | b | 42.82 | b | |||||||
1979 | 24.23 | 4.61 | 23.65 | 37.30 | 56.00 | 59.00 | 64.16 | 60.61 | 54.73 | 41.42 | 30.30 | 3.24 | b | 38.27 | ||||||||||||
1980 | 6.90 | a | 21.79 | 30.18 | c | 40.57 | 51.84 | 52.73 | 64.16 | 59.47 | a | 52.03 | 38.32 | 23.86 | a | 6.55 | 37.37 | |||||||||
1981 | 26.87 | 19.85 | a | 35.35 | 38.37 | 58.16 | 62.80 | 59.74 | 60.94 | 52.13 | 36.10 | 21.83 | 9.68 | 40.15 | ||||||||||||
1982 | 14.43 | a | 16.81 | a | 23.83 | a | 29.33 | 46.68 | 59.03 | 61.13 | 61.23 | 50.90 | a | 31.00 | a | 24.93 | 16.65 | 36.33 | ||||||||
1983 | 6.24 | b | 16.11 | 25.35 | 35.77 | 53.97 | 64.27 | 63.71 | 57.30 | a | 49.23 | 31.26 | 25.67 | 23.97 | 37.74 | |||||||||||
1984 | 10.31 | b | -5.00 | 30.30 | a | 32.70 | 49.10 | 59.00 | 54.71 | c | ----- | z | 45.76 | a | 28.16 | 12.17 | 21.19 | 30.76 | a | |||||||
1985 | 27.81 | 4.54 | 18.55 | 21.07 | 40.00 | 47.90 | ----- | z | 47.50 | c | 40.24 | a | 28.65 | 24.28 | a | 28.97 | a | 29.95 | a | |||||||
1986 | 11.83 | a | 23.89 | 20.61 | 29.83 | ----- | z | ----- | z | 64.65 | 55.64 | c | 49.33 | 33.00 | 23.93 | 25.94 | 33.87 | b | ||||||||
1987 | 18.55 | 19.46 | 27.90 | ----- | z | 48.81 | 60.93 | a | 63.00 | a | 64.62 | b | 47.80 | 40.89 | d | ----- | z | ----- | z | 43.55 | c | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.42 | 14.38 | 24.35 | 32.66 | 50.48 | 60.25 | 63.52 | 61.10 | 51.85 | 35.30 | 23.55 | 15.20 | 38.06 | |||||||||||||
S.D. | 9.61 | 8.69 | 6.65 | 5.12 | 5.64 | 4.64 | 3.40 | 4.52 | 4.37 | 3.92 | 4.66 | 7.23 | 1.49 | |||||||||||||
SKEW | 0.00 | -0.89 | -0.45 | -0.38 | -0.31 | -1.09 | -0.47 | -1.32 | -0.70 | -0.12 | -0.44 | 0.26 | 0.11 | |||||||||||||
MAX | 28.13 | 23.89 | 35.35 | 40.57 | 58.16 | 65.93 | 70.13 | 67.57 | 58.53 | 41.42 | 33.14 | 28.97 | 40.15 | |||||||||||||
MIN | -1.32 | -5.00 | 13.13 | 21.07 | 40.00 | 47.90 | 54.71 | 47.50 | 40.24 | 28.16 | 12.17 | 3.24 | 35.99 | |||||||||||||
YRS | 20 | 19 | 17 | 18 | 20 | 20 | 20 | 19 | 20 | 21 | 18 | 20 | 9 |