YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1900 | ----- | z | ----- | z | ----- | z | 44.77 | d | 51.86 | b | 59.83 | 62.73 | 69.40 | a | 59.02 | 55.78 | d | 26.88 | e | 18.52 | h | 53.78 | d | |||
1901 | 14.57 | h | 8.11 | j | 17.88 | g | ----- | z | ----- | z | 56.00 | j | 64.61 | d | 64.96 | c | 55.81 | d | 47.65 | d | 29.90 | a | 18.82 | 46.96 | f | |
1902 | 17.76 | 18.00 | 33.03 | b | 38.30 | 51.32 | a | 54.95 | 66.37 | a | 61.20 | a | 54.69 | a | 44.29 | 36.00 | 18.84 | 41.23 | ||||||||
1903 | 17.71 | b | 14.36 | 28.82 | a | 36.52 | b | 49.62 | b | 55.90 | a | 63.45 | a | 56.45 | b | 54.42 | d | ----- | z | ----- | z | ----- | z | 41.92 | c | |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | 36.27 | s | ----- | 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 | 67.55 | c | 68.44 | f | 58.02 | c | 46.65 | 38.33 | 30.76 | 48.26 | g | |||
1914 | 22.71 | 11.02 | 23.69 | 46.36 | w | 62.48 | e | 68.98 | c | ----- | z | 64.17 | g | ----- | z | 52.39 | 35.41 | b | 19.16 | 36.98 | d | |||||
1915 | 12.83 | b | ----- | z | 26.37 | 50.92 | 48.24 | b | 55.60 | d | ----- | z | 60.78 | a | 60.67 | ----- | z | ----- | z | ----- | z | 45.06 | e | |||
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 | 29.00 | f | 23.73 | 23.73 | k | |
1939 | 19.63 | a | 14.48 | 22.00 | a | 35.85 | 50.90 | 61.12 | 66.47 | a | 64.42 | a | 58.21 | a | 45.05 | a | 34.60 | 30.35 | 41.92 | |||||||
1940 | 15.61 | 22.61 | b | 22.05 | 37.50 | 46.42 | 57.12 | 65.68 | a | 64.23 | a | 60.13 | 49.02 | 32.00 | 24.47 | a | 41.40 | |||||||||
1941 | 20.40 | 20.38 | 24.90 | 45.55 | 55.50 | a | 60.07 | 67.11 | 63.55 | 60.30 | 47.34 | 35.58 | 28.47 | 44.10 | ||||||||||||
1942 | 21.47 | a | 19.62 | 31.19 | 48.18 | 49.29 | 59.27 | b | 64.60 | 64.53 | 54.60 | a | 47.61 | 33.25 | 19.77 | a | 42.78 | |||||||||
1943 | 13.92 | 15.08 | d | 20.89 | 37.85 | 50.97 | b | 57.98 | 68.97 | 65.87 | 54.50 | 47.77 | 31.23 | 24.20 | a | 40.77 | ||||||||||
1944 | 27.92 | 21.28 | 25.39 | 35.75 | 54.27 | 60.20 | 66.29 | 67.34 | 58.08 | 47.79 | b | 38.35 | 21.13 | a | 43.65 | |||||||||||
1945 | 14.16 | 18.56 | a | 37.61 | 39.98 | 44.97 | 55.97 | 62.30 | c | 65.53 | a | 59.24 | a | 43.80 | a | 29.43 | 19.52 | 40.92 | ||||||||
1946 | 19.00 | 16.11 | 38.40 | 43.47 | 49.23 | a | 59.03 | a | 69.45 | a | 64.26 | 59.28 | 50.70 | a | 35.88 | 21.95 | a | 43.90 | ||||||||
1947 | 20.95 | 15.75 | 23.66 | 35.05 | 46.63 | 56.95 | 66.02 | 72.66 | 57.38 | 55.57 | a | 30.17 | 22.53 | 41.94 | ||||||||||||
1948 | 12.45 | 14.78 | 25.32 | 44.08 | 49.35 | 59.13 | 67.69 | b | 66.81 | 60.17 | 49.24 | 36.62 | 22.95 | 42.38 | ||||||||||||
1949 | 19.94 | 18.00 | 25.53 | a | 44.25 | 53.70 | a | 65.47 | 68.65 | 68.18 | 56.08 | 52.08 | 34.08 | 22.61 | 44.05 | |||||||||||
1950 | 12.90 | 18.73 | 22.15 | 32.83 | 49.68 | 60.62 | 63.48 | 59.17 | a | 56.92 | 49.98 | 29.60 | 19.16 | 39.60 | ||||||||||||
1951 | 16.16 | 18.23 | 23.12 | b | 37.97 | 54.97 | 58.37 | 66.18 | 61.30 | a | 54.65 | 45.58 | 26.68 | 17.52 | c | 40.06 | ||||||||||
1952 | 18.21 | 23.09 | b | 25.83 | a | 43.87 | 50.68 | 63.38 | 68.87 | 65.11 | 60.45 | 43.29 | 36.40 | 27.40 | 43.88 | |||||||||||
1953 | 20.77 | 20.59 | 30.84 | 36.90 | 50.48 | 61.00 | 66.31 | 68.15 | a | 59.34 | b | 54.90 | b | 38.77 | 25.13 | 44.43 | ||||||||||
1954 | 14.88 | a | 29.52 | 26.45 | 40.41 | a | 45.97 | 63.32 | 65.92 | 63.79 | 56.28 | 46.31 | 37.83 | a | 25.69 | 43.03 | ||||||||||
1955 | 19.32 | 19.64 | 22.61 | 48.50 | 56.26 | 63.98 | 71.68 | 70.66 | 59.28 | 50.13 | 30.48 | 18.65 | 44.27 | |||||||||||||
1956 | 20.52 | 19.29 | a | 23.95 | 37.07 | 48.93 | a | 63.17 | 62.81 | 64.45 | 54.50 | 54.74 | 35.37 | 23.97 | a | 42.40 | ||||||||||
1957 | 12.52 | 17.91 | 24.18 | 43.10 | 52.21 | 59.79 | a | 67.00 | 65.40 | 56.10 | 47.73 | 34.97 | 24.42 | 42.11 | ||||||||||||
1958 | 22.84 | 16.27 | 27.65 | 43.52 | a | 51.03 | a | 57.57 | 64.98 | 65.43 | a | 60.02 | 49.60 | 35.67 | 15.34 | 42.49 | ||||||||||
1959 | 10.63 | 12.70 | 27.13 | 39.83 | 56.23 | 64.00 | 69.26 | 69.06 | 59.70 | 44.26 | 26.55 | 29.10 | 42.37 | |||||||||||||
1960 | 19.55 | 19.45 | 19.37 | 41.73 | 49.47 | 58.85 | 64.56 | 66.40 | 60.16 | b | 48.32 | 36.87 | 19.00 | 41.98 | ||||||||||||
1961 | 14.63 | 22.59 | 31.18 | 38.27 | 49.83 | a | 60.38 | 65.60 | 67.87 | 59.03 | 50.77 | 35.63 | 21.37 | 43.10 | ||||||||||||
1962 | 13.45 | 13.77 | 27.21 | 37.45 | 56.11 | 59.42 | 62.84 | 64.85 | 55.38 | 49.29 | 35.95 | 21.19 | 41.41 | |||||||||||||
1963 | 7.93 | b | 9.21 | 28.87 | 41.83 | 50.77 | 61.68 | 67.94 | 63.95 | 58.98 | 58.97 | 40.13 | 17.82 | 42.34 | ||||||||||||
1964 | 24.31 | 22.21 | 25.90 | 42.48 | 58.03 | 61.38 | 67.77 | 63.79 | 57.20 | 48.24 | 36.08 | 17.40 | 43.73 | |||||||||||||
1965 | 14.11 | 13.34 | 18.10 | 39.23 | 56.00 | a | 59.43 | 62.60 | a | 61.98 | 52.02 | 49.48 | 33.80 | 27.42 | 40.63 | |||||||||||
1966 | 11.87 | 16.67 | a | 32.03 | 37.23 | 47.85 | 62.72 | a | 68.79 | 62.67 | a | 56.93 | 45.92 | 32.80 | 21.77 | 41.44 | ||||||||||
1967 | 18.29 | 9.57 | 26.15 | 40.77 | 46.23 | 58.80 | 62.73 | 61.81 | 57.60 | 45.38 | a | 31.40 | 23.55 | 40.19 | ||||||||||||
1968 | 15.09 | b | 14.79 | a | 32.05 | 42.37 | 47.98 | a | 57.12 | a | 64.76 | 63.94 | 58.88 | 51.45 | 34.25 | 21.55 | 42.02 | |||||||||
1969 | 18.47 | 18.86 | 22.42 | 40.72 | 52.24 | 54.62 | 63.48 | 67.97 | 57.28 | 44.05 | 33.95 | 23.08 | 41.43 | |||||||||||||
1970 | 11.68 | 12.20 | 20.11 | 39.80 | 48.97 | 60.98 | 67.87 | 66.85 | 58.18 | 49.56 | 32.68 | 21.60 | 40.87 | |||||||||||||
1971 | 12.63 | 16.42 | b | 23.23 | 40.25 | 46.94 | 60.95 | 62.00 | 61.30 | a | 58.03 | 51.94 | 32.82 | 21.11 | 40.63 | |||||||||||
1972 | 8.85 | 8.79 | 16.34 | 32.87 | 52.87 | 54.97 | 62.05 | 61.52 | 53.38 | d | 42.87 | 31.85 | 16.79 | 36.93 | ||||||||||||
1973 | 18.02 | 15.88 | 33.64 | c | 39.45 | 46.27 | 59.40 | 64.32 | 65.98 | 56.03 | 51.39 | 34.00 | 20.08 | 42.04 | ||||||||||||
1974 | 13.50 | 9.30 | 23.11 | 36.35 | 47.11 | 57.30 | 67.33 | b | 62.24 | 51.10 | 44.31 | 34.73 | 24.31 | 39.22 | ||||||||||||
1975 | 19.90 | b | 19.43 | 24.08 | 33.30 | 53.37 | 59.95 | 67.66 | 64.90 | a | 52.24 | a | 47.95 | 35.95 | 19.90 | 41.55 | ||||||||||
1976 | 13.52 | 23.97 | 25.89 | 41.70 | 47.50 | 62.63 | 64.24 | 63.35 | 52.32 | 40.44 | 27.30 | 11.26 | b | 39.51 | ||||||||||||
1977 | ----- | z | 15.29 | 31.58 | 41.33 | 58.43 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.66 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 16.69 | 17.09 | 26.14 | 40.21 | 51.07 | 59.85 | 65.84 | 64.75 | 57.10 | 48.59 | 33.73 | 21.97 | 41.86 | |||||||||||||
S.D. | 4.34 | 4.41 | 4.83 | 4.10 | 3.89 | 3.02 | 2.39 | 3.09 | 2.58 | 3.90 | 3.38 | 4.02 | 1.60 | |||||||||||||
SKEW | 0.22 | 0.18 | 0.54 | 0.40 | 0.75 | 0.52 | 0.15 | 0.02 | -0.58 | 0.43 | -0.51 | 0.09 | -0.62 | |||||||||||||
MAX | 27.92 | 29.52 | 38.40 | 50.92 | 62.48 | 68.98 | 71.68 | 72.66 | 60.67 | 58.97 | 40.13 | 30.76 | 44.43 | |||||||||||||
MIN | 7.93 | 8.79 | 16.34 | 32.83 | 44.97 | 54.62 | 62.00 | 56.45 | 51.10 | 40.44 | 26.55 | 11.26 | 36.93 | |||||||||||||
YRS | 42 | 42 | 43 | 43 | 44 | 43 | 43 | 43 | 44 | 43 | 43 | 43 | 39 |