YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.33 | l | 21.42 | 21.42 | k | |
1904 | 14.42 | 24.62 | 29.19 | 32.23 | 40.20 | a | 48.10 | 52.77 | 54.58 | 47.27 | 39.00 | 27.90 | 24.32 | 36.22 | ||||||||||||
1905 | 25.48 | 29.75 | 32.68 | 35.20 | 39.97 | 50.10 | 52.39 | 54.48 | 49.03 | 35.97 | 33.40 | 19.84 | 38.19 | |||||||||||||
1906 | 19.48 | 24.36 | 29.00 | 35.30 | 40.00 | 45.30 | 54.19 | 52.84 | 46.40 | 35.71 | 29.90 | a | ----- | z | 37.50 | a | ||||||||||
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.55 | s | 23.13 | 23.13 | k | |
1960 | 14.97 | 18.00 | 24.77 | 30.57 | 35.32 | 46.60 | 52.61 | 50.61 | 45.20 | 32.71 | 21.57 | 16.32 | 32.44 | |||||||||||||
1961 | 15.33 | a | 18.46 | 21.55 | 26.67 | 31.84 | 45.33 | 51.84 | 52.55 | 44.07 | 32.55 | 25.53 | 19.16 | 32.07 | ||||||||||||
1962 | 20.10 | 22.86 | 20.16 | 31.20 | 32.77 | 41.27 | 51.65 | 47.97 | 48.53 | 35.90 | 26.87 | 21.94 | 33.43 | |||||||||||||
1963 | 15.65 | 23.14 | 22.65 | 30.17 | 37.13 | 40.17 | 52.00 | 53.35 | 48.07 | 36.87 | 26.40 | 15.13 | 33.39 | |||||||||||||
1964 | 11.16 | 11.41 | 20.55 | 26.67 | 35.23 | 41.69 | a | 55.65 | 53.10 | 47.43 | 33.94 | 23.20 | 20.48 | 31.71 | ||||||||||||
1965 | 21.58 | 18.64 | 21.45 | 30.27 | 33.94 | 41.57 | 53.81 | 51.52 | 44.50 | 31.52 | 28.40 | 21.93 | a | 33.26 | ||||||||||||
1966 | 15.35 | 16.96 | 24.52 | 30.43 | 37.26 | 44.37 | 54.87 | 51.87 | 46.07 | 31.90 | 26.03 | 17.48 | 33.09 | |||||||||||||
1967 | 13.81 | 19.57 | 25.26 | 26.83 | 33.77 | 44.07 | 53.55 | 50.32 | 45.60 | 31.29 | 24.93 | 17.52 | 32.21 | |||||||||||||
1968 | 18.77 | 24.83 | 24.48 | 27.63 | 33.42 | 41.77 | 49.87 | 47.48 | 37.97 | 30.77 | 22.00 | 12.48 | 30.96 | |||||||||||||
1969 | 23.16 | 19.89 | 17.35 | 28.07 | 34.94 | 40.93 | 55.27 | a | 54.10 | 45.57 | 33.19 | 24.43 | 21.16 | 33.17 | ||||||||||||
1970 | 14.26 | 20.86 | 21.55 | 21.10 | 34.48 | 41.50 | 53.32 | 52.61 | 43.13 | 28.63 | a | 19.60 | 15.90 | 30.58 | ||||||||||||
1971 | 13.71 | 16.57 | 20.42 | 24.83 | 27.29 | 41.70 | 52.23 | 51.19 | 42.90 | 32.32 | 24.60 | 18.13 | 30.49 | |||||||||||||
1972 | 15.06 | 17.52 | 24.97 | 24.47 | 32.35 | 44.30 | 52.03 | 50.29 | 43.40 | 39.13 | 21.63 | 16.97 | 31.84 | |||||||||||||
1973 | 15.84 | 23.25 | 23.90 | 26.73 | 36.71 | 42.77 | 49.94 | 48.81 | 41.07 | 33.00 | n | 19.19 | i | 13.61 | 32.26 | b | ||||||||||
1974 | 18.32 | 14.11 | 24.10 | a | 25.50 | 33.77 | 44.87 | 50.42 | 47.13 | 42.80 | 36.52 | 22.60 | 14.90 | 31.25 | ||||||||||||
1975 | 17.26 | 18.21 | 23.29 | 23.67 | 32.94 | 40.83 | 50.90 | 47.97 | 43.60 | 31.58 | 20.53 | 21.13 | 30.99 | |||||||||||||
1976 | 15.45 | 24.41 | 23.68 | 29.63 | 37.29 | 43.10 | 51.06 | 49.81 | 46.10 | 31.45 | 22.63 | 15.90 | 32.54 | |||||||||||||
1977 | 20.10 | 19.86 | 20.42 | 29.87 | 34.81 | 46.10 | 54.42 | 53.29 | 47.13 | 36.10 | 25.37 | 22.74 | 34.18 | |||||||||||||
1978 | 22.39 | 24.50 | 29.16 | 29.50 | ----- | z | 43.83 | 52.19 | 47.42 | 44.50 | ----- | z | ----- | z | ----- | z | 36.69 | d | ||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.76 | m | 51.94 | 48.90 | 46.27 | 34.97 | 22.00 | 20.00 | a | 37.35 | f | |||||
1980 | 27.32 | 25.83 | 24.74 | 28.73 | 33.71 | 42.97 | 50.84 | 46.81 | 39.93 | 23.48 | 15.43 | 14.87 | 31.22 | |||||||||||||
1981 | 17.45 | 14.71 | 19.73 | a | 27.13 | 35.23 | 41.20 | 46.03 | 51.19 | 47.60 | 35.81 | 22.53 | 19.48 | j | 32.60 | a | ||||||||||
1982 | 21.68 | 25.43 | 26.52 | 31.63 | 37.06 | 42.67 | 53.87 | 55.57 | a | 48.77 | 30.87 | 29.00 | 21.87 | 35.41 | ||||||||||||
1983 | 22.29 | 23.25 | 28.45 | 28.10 | 34.97 | 42.30 | 52.55 | 53.97 | 50.62 | a | 39.81 | 27.53 | 23.32 | 35.60 | ||||||||||||
1984 | 20.90 | 17.31 | 23.84 | 29.40 | 41.61 | 48.10 | a | 53.17 | a | 51.52 | 45.43 | 33.42 | 22.10 | 24.68 | i | 35.16 | a | |||||||||
1985 | 21.97 | 19.48 | a | 27.29 | 33.03 | 38.68 | 45.57 | 52.36 | t | 50.94 | 42.00 | 34.29 | 24.33 | 18.07 | b | 32.33 | a | |||||||||
1986 | 20.21 | b | ----- | z | 27.26 | 30.03 | 36.61 | 46.64 | b | 50.61 | ----- | z | 49.73 | s | ----- | z | 29.27 | o | 24.55 | 33.70 | e | |||||
1987 | 19.34 | b | 23.93 | 25.55 | 35.70 | 41.00 | g | 49.50 | 52.81 | 53.87 | 45.53 | 40.77 | 26.87 | 18.57 | a | 35.68 | a | |||||||||
1988 | 21.50 | c | 25.34 | 25.35 | 33.43 | 40.23 | 49.83 | 55.58 | 57.03 | 45.07 | a | 41.61 | 26.80 | 20.68 | 36.87 | |||||||||||
1989 | 20.65 | 26.39 | 29.52 | 37.00 | 42.16 | 48.50 | 56.35 | 53.35 | ----- | z | ----- | z | ----- | z | ----- | z | 39.24 | d | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.59 | 21.08 | 24.48 | 29.40 | 35.86 | 44.30 | 52.52 | 51.45 | 45.21 | 34.21 | 24.63 | 19.12 | 33.09 | |||||||||||||
S.D. | 3.78 | 4.22 | 3.45 | 3.68 | 3.27 | 2.91 | 2.07 | 2.67 | 2.77 | 3.87 | 3.58 | 3.28 | 2.11 | |||||||||||||
SKEW | 0.19 | -0.24 | 0.21 | 0.08 | -0.07 | 0.54 | -0.64 | -0.10 | -0.50 | -0.28 | -0.04 | -0.19 | 0.86 | |||||||||||||
MAX | 27.32 | 29.75 | 32.68 | 37.00 | 42.16 | 50.10 | 56.35 | 57.03 | 50.62 | 41.61 | 33.40 | 24.55 | 38.19 | |||||||||||||
MIN | 11.16 | 11.41 | 17.35 | 21.10 | 27.29 | 40.17 | 46.03 | 46.81 | 37.97 | 23.48 | 15.43 | 12.48 | 30.49 | |||||||||||||
YRS | 32 | 31 | 32 | 32 | 30 | 32 | 32 | 32 | 31 | 29 | 29 | 30 | 23 |