YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 13.43 | g | 0.61 | c | 0.61 | k |
1899 | 8.05 | j | ----- | z | 17.61 | 26.93 | a | 32.06 | 32.83 | 39.90 | a | 35.42 | 33.31 | a | 17.06 | 8.45 | a | -3.67 | j | 27.06 | c | |||||
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.13 | g | 29.26 | 18.27 | 16.58 | 21.37 | i | |||
1902 | 9.66 | b | 16.68 | 17.45 | 26.83 | a | 34.32 | c | 45.27 | 42.00 | 43.35 | 34.30 | 25.74 | 12.97 | ----- | z | 28.05 | a | ||||||||
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 8.90 | b | 2.57 | 19.94 | 24.97 | 32.42 | 46.37 | 52.06 | 46.58 | 39.70 | 30.97 | 21.50 | 20.45 | 28.87 | ||||||||||||
1934 | 12.26 | 19.21 | 26.13 | 31.67 | 39.39 | 43.27 | 50.29 | 50.00 | 37.30 | 30.35 | 20.67 | 11.71 | 31.02 | |||||||||||||
1935 | 11.58 | 14.50 | 19.16 | 27.80 | 34.87 | 45.33 | 50.90 | 49.10 | 39.67 | 26.26 | 16.00 | 8.74 | 28.66 | |||||||||||||
1936 | 7.74 | 14.79 | a | 19.42 | 28.63 | 38.03 | a | 47.27 | 54.58 | 52.10 | 37.07 | 29.68 | 14.93 | 13.06 | 29.77 | |||||||||||
1937 | -5.23 | a | 7.00 | 17.90 | 25.93 | 37.35 | 43.60 | 52.74 | 48.90 | 41.33 | 30.68 | 19.72 | a | 12.84 | 27.73 | |||||||||||
1938 | 11.39 | 11.82 | 19.84 | 28.87 | 36.13 | a | 46.20 | 47.52 | 46.65 | 42.38 | a | 31.97 | 14.57 | 16.06 | 29.45 | |||||||||||
1939 | 10.26 | 3.36 | 20.52 | 30.37 | 37.58 | 40.70 | 48.52 | 45.32 | 40.03 | 30.77 | 12.77 | 15.19 | 27.95 | |||||||||||||
1940 | 6.35 | 13.14 | 25.52 | 30.50 | 36.77 | 45.17 | 49.29 | 48.55 | 42.20 | 30.71 | 13.17 | 13.13 | 29.54 | |||||||||||||
1941 | 0.55 | 12.75 | 20.39 | 28.83 | 39.94 | 43.50 | 49.48 | 49.48 | 37.37 | ----- | z | 20.90 | 10.19 | 28.49 | a | |||||||||||
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 | 49.23 | 42.00 | 26.57 | a | 18.37 | 8.74 | 28.98 | g | ||||
1949 | -6.34 | b | 8.00 | 24.23 | 32.40 | 40.27 | a | 46.30 | 51.16 | 49.29 | 41.03 | 29.90 | 26.97 | 12.68 | 29.66 | |||||||||||
1950 | 8.90 | 12.36 | 21.80 | a | 28.17 | a | 34.19 | 41.30 | 49.97 | 46.84 | 42.07 | 32.77 | 24.90 | a | 22.81 | 30.51 | ||||||||||
1951 | 13.32 | f | 19.57 | 19.84 | 29.07 | 38.94 | 41.90 | 50.77 | 50.00 | 40.07 | 31.97 | a | 15.87 | 12.23 | 31.84 | a | ||||||||||
1952 | 8.71 | 9.76 | 16.52 | 31.27 | 39.23 | 46.27 | 51.77 | 51.52 | 42.33 | 30.10 | 12.10 | 11.55 | 29.26 | |||||||||||||
1953 | 24.19 | 18.74 | a | 22.61 | 26.10 | 33.52 | 45.23 | 54.84 | 51.29 | 41.77 | 30.90 | 24.53 | 17.61 | 32.61 | ||||||||||||
1954 | 16.81 | 22.00 | 18.87 | 32.80 | 38.35 | 45.10 | 53.06 | 47.87 | 42.00 | 30.19 | 24.43 | 4.68 | 31.35 | |||||||||||||
1955 | 7.71 | 11.75 | 17.39 | 26.30 | 37.45 | 44.67 | 51.00 | 51.94 | 39.43 | 30.19 | 18.70 | 19.60 | a | 29.68 | ||||||||||||
1956 | 15.03 | 6.93 | 20.48 | 28.83 | 40.03 | 46.83 | 52.71 | 47.77 | 40.07 | 31.13 | 19.33 | 18.19 | 30.61 | |||||||||||||
1957 | 3.81 | 23.50 | 24.35 | 29.47 | 38.61 | 46.27 | 51.65 | 50.55 | 36.13 | 32.42 | 18.90 | 15.26 | 30.91 | |||||||||||||
1958 | 4.58 | 20.18 | 19.94 | 26.67 | 40.48 | 46.20 | 49.77 | 52.39 | 41.83 | 29.13 | 24.17 | 23.61 | 31.58 | |||||||||||||
1959 | 12.61 | 15.29 | 24.03 | 29.80 | 36.48 | 47.77 | 51.35 | 49.42 | 41.83 | 32.48 | 22.52 | a | 13.45 | 31.42 | ||||||||||||
1960 | 8.81 | 9.10 | 23.61 | 31.97 | 38.29 | 48.20 | 54.32 | 48.13 | 42.87 | 31.65 | 21.00 | 7.77 | 30.48 | |||||||||||||
1961 | 9.39 | 20.04 | 23.39 | 29.23 | 38.39 | 49.60 | 52.58 | 52.48 | 37.80 | 29.90 | 17.43 | b | 12.84 | 31.09 | ||||||||||||
1962 | 5.23 | 20.04 | 15.03 | 32.97 | 39.77 | 44.50 | 50.32 | 47.45 | 40.60 | 31.27 | a | 21.97 | 14.77 | 30.33 | ||||||||||||
1963 | 6.97 | 21.64 | 20.32 | 28.60 | 39.84 | 45.30 | 52.13 | 51.00 | 43.80 | 35.32 | 23.03 | 16.16 | 32.01 | |||||||||||||
1964 | 10.07 | a | 9.93 | a | 14.80 | a | 29.33 | 38.13 | a | 44.43 | 53.58 | 47.93 | a | 39.53 | 29.71 | 20.17 | 14.26 | 29.32 | ||||||||
1965 | 16.58 | 18.14 | 13.48 | 32.00 | 36.77 | 45.27 | 53.00 | 49.32 | 35.72 | a | 32.39 | 25.79 | a | 13.32 | 30.98 | |||||||||||
1966 | 9.94 | 11.25 | 20.10 | b | 27.93 | 37.77 | 44.43 | 54.23 | 48.81 | 43.13 | 28.87 | 25.00 | a | 15.61 | 30.59 | |||||||||||
1967 | 19.68 | 19.18 | 23.77 | 26.90 | 36.65 | 45.27 | 52.52 | 50.48 | 43.57 | 34.32 | 20.00 | 7.90 | 31.69 | |||||||||||||
1968 | 9.65 | 17.93 | 23.65 | 26.41 | a | 35.35 | 46.53 | 51.03 | 47.65 | 39.73 | 32.52 | 19.41 | a | 10.87 | 30.06 | |||||||||||
1969 | 17.30 | a | 10.07 | 14.03 | 30.90 | 41.26 | 43.27 | 51.10 | 53.39 | 43.70 | 27.35 | 20.00 | a | 14.23 | 30.55 | |||||||||||
1970 | 17.26 | 17.86 | 20.97 | a | 26.27 | 38.32 | 46.13 | 52.42 | 52.74 | 36.07 | 26.52 | 24.27 | 10.45 | 30.77 | ||||||||||||
1971 | 20.29 | 18.00 | 19.94 | 27.30 | 36.32 | 44.10 | 49.00 | 52.00 | 36.43 | 28.84 | 15.43 | 6.87 | 29.54 | |||||||||||||
1972 | 10.35 | 15.93 | 26.13 | 29.33 | 37.32 | 47.57 | 48.84 | 49.26 | 38.23 | 31.03 | 17.83 | 4.32 | 29.68 | |||||||||||||
1973 | -0.94 | 2.04 | 19.55 | 25.03 | 35.94 | 44.63 | 49.52 | 49.55 | 38.20 | 30.87 | a | 19.20 | 17.13 | 27.56 | ||||||||||||
1974 | 7.68 | 13.36 | 25.58 | 28.13 | 36.58 | 46.83 | 52.32 | 45.58 | 35.20 | 30.06 | 20.97 | 12.45 | 29.56 | |||||||||||||
1975 | 11.42 | 15.71 | 21.74 | 23.80 | 33.84 | 41.13 | 53.23 | 46.16 | 36.33 | 28.03 | 16.97 | 16.81 | 28.76 | |||||||||||||
1976 | 13.81 | 12.97 | 19.32 | 28.33 | 37.50 | a | 40.53 | 51.11 | d | 46.84 | 41.47 | 28.16 | 21.93 | 15.00 | 29.75 | |||||||||||
1977 | 13.61 | 17.75 | 17.58 | 30.43 | 35.65 | 49.57 | 51.65 | 48.97 | 39.47 | 30.80 | a | 21.87 | 20.13 | 31.46 | ||||||||||||
1978 | 16.06 | 17.89 | 25.87 | 30.10 | 34.97 | 44.37 | 51.00 | f | 47.10 | b | 38.28 | a | 30.29 | 15.87 | 5.26 | 27.82 | a | |||||||||
1979 | -2.29 | 13.50 | 23.26 | 27.93 | 31.73 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 15.60 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 9.76 | 14.30 | 20.62 | 28.69 | 37.20 | 44.85 | 50.96 | 48.77 | 39.65 | 29.98 | 19.37 | 13.22 | 30.13 | |||||||||||||
S.D. | 6.60 | 5.38 | 3.35 | 2.24 | 2.23 | 2.87 | 2.91 | 3.08 | 2.75 | 2.88 | 4.15 | 4.95 | 1.20 | |||||||||||||
SKEW | -0.41 | -0.53 | -0.17 | 0.04 | -0.40 | -1.80 | -2.01 | -1.91 | -0.43 | -2.12 | -0.40 | -0.25 | -0.23 | |||||||||||||
MAX | 24.19 | 23.50 | 26.13 | 32.97 | 41.26 | 49.60 | 54.84 | 53.39 | 43.80 | 35.32 | 26.97 | 23.61 | 32.61 | |||||||||||||
MIN | -6.34 | 2.04 | 13.48 | 23.80 | 32.06 | 32.83 | 39.90 | 35.42 | 33.31 | 17.06 | 8.45 | 0.61 | 27.56 | |||||||||||||
YRS | 40 | 41 | 42 | 42 | 41 | 41 | 40 | 42 | 42 | 42 | 43 | 42 | 36 |