YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1918 | ----- | z | ----- | z | ----- | z | 29.13 | 33.95 | l | 51.07 | p | 51.52 | 50.03 | 41.50 | 31.92 | f | ----- | z | ----- | z | 43.05 | h | ||||
1919 | 3.48 | d | 12.96 | e | 23.23 | i | 31.97 | a | 36.97 | a | ----- | z | ----- | z | ----- | z | 42.40 | ----- | z | ----- | z | ----- | z | 25.55 | g | |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 14.97 | 14.97 | k | |
1959 | 11.68 | 17.00 | 17.32 | 30.87 | 36.19 | 48.03 | 50.68 | 49.74 | 41.00 | 35.44 | d | 19.71 | i | 15.74 | 32.15 | a | ||||||||||
1960 | 12.52 | 14.17 | 25.35 | 29.90 | 35.90 | 46.97 | 53.10 | 48.58 | 43.93 | 31.30 | a | 27.77 | 16.55 | 32.17 | ||||||||||||
1961 | 11.74 | 16.86 | 22.87 | 24.70 | 32.94 | 44.90 | 52.90 | 52.17 | a | 41.00 | 31.52 | 21.77 | 13.97 | 30.61 | ||||||||||||
1962 | 10.29 | 20.79 | ----- | z | 34.14 | a | 33.47 | a | 42.57 | 52.35 | 50.52 | 46.17 | 38.68 | 30.14 | a | 17.35 | 34.22 | a | ||||||||
1963 | 13.73 | a | 20.59 | a | 22.90 | 28.30 | 38.40 | a | 41.93 | 54.32 | 50.81 | 44.89 | b | 41.70 | u | ----- | z | ----- | z | 35.10 | c | |||||
1964 | 8.77 | ----- | z | 19.47 | a | 23.10 | a | 37.52 | 44.39 | b | 53.03 | 50.70 | a | 45.30 | 33.20 | a | 20.46 | b | 18.05 | j | 33.59 | b | ||||
1965 | 18.06 | 17.00 | 25.88 | w | 26.47 | 33.32 | 48.83 | 53.65 | 54.00 | d | 42.80 | 32.81 | 27.33 | 17.57 | j | 35.43 | b | |||||||||
1966 | 9.77 | ----- | z | ----- | z | 30.83 | 44.90 | 50.43 | 58.48 | 52.90 | 45.00 | 35.48 | 27.73 | d | 16.97 | 37.25 | b | |||||||||
1967 | 13.58 | 21.43 | 27.77 | 32.70 | 38.94 | 48.17 | 55.65 | 51.58 | 45.13 | 36.58 | 30.47 | 13.13 | 34.59 | |||||||||||||
1968 | 16.00 | 25.07 | 25.71 | 29.13 | 39.13 | 50.13 | 53.55 | 50.68 | 43.60 | 37.61 | 23.75 | b | 14.16 | 34.04 | ||||||||||||
1969 | 24.87 | 19.21 | 18.55 | 31.07 | 41.10 | 48.33 | 56.29 | 55.77 | 45.77 | 28.94 | ----- | z | 20.23 | 35.47 | a | |||||||||||
1970 | 16.67 | a | 23.57 | 22.61 | 28.17 | 41.90 | 48.87 | 55.35 | 54.74 | 43.33 | 30.16 | 24.97 | 16.90 | 33.94 | ||||||||||||
1971 | 13.90 | 18.33 | a | 26.19 | 29.83 | 37.65 | 50.17 | 54.87 | 50.97 | a | 45.10 | 34.10 | 25.33 | 15.81 | 33.52 | |||||||||||
1972 | 18.97 | a | 21.93 | 30.00 | 32.63 | 41.39 | 49.50 | 56.06 | 52.23 | 47.30 | 39.35 | 20.57 | 15.68 | 35.47 | ||||||||||||
1973 | 13.52 | 20.61 | 25.29 | 26.47 | 38.35 | 48.33 | 53.26 | 52.97 | 44.23 | 35.29 | 26.80 | 18.00 | 33.59 | |||||||||||||
1974 | 16.48 | 17.21 | 29.42 | 29.90 | 43.00 | 51.70 | 53.26 | 51.23 | 44.93 | 38.74 | 26.43 | b | 15.74 | 34.84 | ||||||||||||
1975 | 13.52 | d | 17.79 | 24.87 | 27.23 | 36.26 | 46.40 | 53.29 | 52.10 | 44.93 | 35.65 | 19.83 | 14.63 | a | 32.21 | |||||||||||
1976 | 13.68 | 24.48 | 18.29 | 31.10 | 40.23 | 48.90 | 54.37 | a | 51.42 | 47.13 | 32.45 | 21.97 | 10.39 | 32.87 | ||||||||||||
1977 | 8.39 | 17.93 | 19.97 | 33.23 | 39.84 | 52.67 | 55.45 | 55.65 | 49.73 | 39.71 | 26.83 | 22.70 | a | 35.17 | ||||||||||||
1978 | 20.10 | 19.43 | 31.03 | 32.38 | a | 38.48 | 51.83 | 56.16 | 52.26 | 46.97 | 39.57 | a | 30.30 | 13.67 | a | 36.01 | ||||||||||
1979 | 9.81 | 16.89 | 25.13 | 31.10 | 39.87 | 49.55 | a | 55.81 | 52.87 | 50.33 | 39.90 | a | 22.04 | b | 17.13 | 34.20 | ||||||||||
1980 | 15.34 | b | 17.93 | 23.23 | 28.93 | 38.32 | 50.87 | 57.00 | 54.90 | 49.23 | 34.52 | 24.17 | 24.58 | 34.92 | ||||||||||||
1981 | 22.26 | 18.96 | 24.45 | 37.00 | 41.19 | 53.90 | 55.13 | 53.52 | 47.73 | 36.61 | 27.13 | 15.26 | 36.10 | |||||||||||||
1982 | ----- | z | 13.22 | a | 25.61 | 32.10 | 39.67 | a | 49.13 | 56.42 | 54.77 | 49.40 | 28.71 | 25.63 | 16.65 | 35.57 | a | |||||||||
1983 | 14.63 | a | 13.57 | 22.48 | 19.97 | a | 39.00 | 47.77 | 54.77 | 54.94 | 50.10 | 39.61 | 25.33 | 15.71 | 33.16 | |||||||||||
1984 | 14.00 | 17.89 | b | 25.00 | a | 29.27 | 45.13 | 50.87 | 56.61 | 54.71 | 48.73 | 33.37 | a | 26.50 | 20.40 | a | 35.21 | |||||||||
1985 | 15.39 | 11.25 | 28.00 | 34.93 | a | 43.39 | 51.33 | 55.71 | 53.97 | 44.97 | 33.97 | 20.37 | 13.84 | 33.93 | ||||||||||||
1986 | 19.00 | 18.54 | 30.16 | 35.70 | 42.29 | c | 52.63 | 54.84 | 56.23 | 46.30 | 36.16 | 25.93 | a | 21.45 | 36.60 | |||||||||||
1987 | 18.03 | 21.44 | a | 23.94 | 35.29 | f | 41.58 | 49.97 | 54.86 | b | 53.16 | 46.48 | a | 40.07 | a | 26.37 | 18.33 | a | 35.84 | a | ||||||
1988 | 17.39 | 24.61 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.00 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.52 | 18.64 | 24.45 | 30.07 | 39.21 | 48.93 | 54.62 | 52.67 | 45.66 | 35.34 | 25.23 | 16.66 | 34.16 | |||||||||||||
S.D. | 4.41 | 3.55 | 3.72 | 3.64 | 3.13 | 2.86 | 1.72 | 2.00 | 2.61 | 3.42 | 3.11 | 3.10 | 1.49 | |||||||||||||
SKEW | -0.02 | -0.07 | -0.14 | -0.63 | -0.16 | -0.75 | -0.17 | 0.00 | 0.08 | -0.27 | -0.19 | 0.70 | -0.49 | |||||||||||||
MAX | 24.87 | 25.07 | 31.03 | 37.00 | 45.13 | 53.90 | 58.48 | 56.23 | 50.33 | 40.07 | 30.47 | 24.58 | 36.60 | |||||||||||||
MIN | 3.48 | 11.25 | 17.32 | 19.97 | 32.94 | 41.93 | 50.68 | 48.58 | 41.00 | 28.71 | 19.83 | 10.39 | 30.61 | |||||||||||||
YRS | 30 | 29 | 26 | 30 | 30 | 29 | 30 | 30 | 31 | 28 | 26 | 27 | 20 |