YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1894 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1896 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 58.30 | 43.74 | 37.36 | a | 24.53 | 40.98 | h | |||
1911 | 23.00 | a | 20.70 | a | 38.24 | h | ----- | z | 52.12 | k | 61.83 | d | 66.27 | e | 65.76 | f | 57.12 | a | 49.21 | x | 27.39 | c | 15.44 | g | 42.72 | f |
1912 | 17.80 | f | 17.75 | c | 26.52 | j | 41.48 | g | 48.89 | m | ----- | z | 60.58 | a | ----- | z | 45.17 | a | 43.23 | c | 31.23 | d | 12.85 | h | 39.59 | g |
1913 | 13.02 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 13.02 | k |
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 | 56.26 | 65.85 | 71.60 | 67.81 | 55.78 | 45.21 | 33.04 | b | 21.40 | b | 52.12 | d | ||||||
1937 | 4.67 | b | ----- | z | 30.89 | 40.37 | 52.26 | 58.05 | 67.32 | 66.35 | 58.07 | 46.86 | b | 34.28 | a | 25.87 | 44.09 | a | ||||||||
1938 | 22.61 | 26.27 | 33.06 | 43.66 | b | 49.08 | 61.23 | 64.10 | 63.94 | 57.88 | 45.27 | 21.28 | 19.23 | a | 42.30 | |||||||||||
1939 | 18.55 | 9.16 | 30.06 | 44.70 | 52.80 | c | 57.33 | 65.98 | 63.73 | 57.57 | 42.73 | 34.33 | 26.95 | 41.99 | ||||||||||||
1940 | 17.66 | 25.43 | 35.50 | 43.18 | 53.60 | 61.67 | 68.12 | a | 65.74 | 58.20 | 45.79 | 27.50 | 23.81 | 43.85 | ||||||||||||
1941 | 17.47 | 26.16 | 33.63 | 40.47 | 53.39 | 57.60 | 65.24 | 64.06 | 51.73 | 44.03 | 33.42 | 23.45 | 42.55 | |||||||||||||
1942 | 13.69 | 16.65 | d | 26.16 | c | 44.45 | b | 47.52 | 56.83 | a | 65.43 | a | 62.26 | 54.54 | b | 44.40 | 33.40 | a | 22.68 | 40.67 | ||||||
1943 | 21.18 | 25.75 | 30.17 | b | 48.28 | 48.26 | 55.98 | 66.21 | 65.71 | 55.92 | 44.82 | 32.33 | 23.02 | 43.14 | ||||||||||||
1944 | 11.69 | 21.00 | a | 29.85 | 39.38 | 50.60 | 55.87 | 63.48 | a | 63.24 | 55.53 | 47.73 | 33.45 | 21.45 | 41.11 | |||||||||||
1945 | 21.60 | 25.79 | 28.37 | 36.55 | 52.03 | 55.20 | 65.69 | 65.82 | a | 53.38 | a | 47.03 | 30.32 | 19.32 | 41.76 | |||||||||||
1946 | 17.44 | 24.25 | 36.79 | 47.47 | 48.70 | a | 59.72 | 67.90 | 64.58 | 55.35 | 41.65 | a | 30.38 | 28.77 | c | 43.58 | ||||||||||
1947 | 15.89 | 25.84 | 32.13 | a | 41.48 | 53.69 | 55.33 | 66.00 | 65.24 | 57.73 | 48.63 | 26.72 | a | 19.37 | 42.34 | |||||||||||
1948 | 14.02 | 19.40 | 25.58 | 43.77 | 53.18 | a | 60.90 | 66.39 | 65.40 | 59.68 | 45.61 | 26.83 | 20.13 | 41.74 | ||||||||||||
1949 | 7.68 | 16.29 | 34.15 | 46.15 | 52.98 | 58.42 | 65.08 | a | 63.52 | 55.81 | a | 42.10 | 38.67 | 23.19 | b | 42.00 | ||||||||||
1950 | 16.82 | a | 26.50 | 33.02 | 42.97 | 46.45 | c | 58.80 | c | 64.18 | 63.11 | 57.15 | 49.85 | 35.32 | 28.93 | b | 43.59 | |||||||||
1951 | 15.94 | 25.30 | 31.06 | 42.07 | 52.43 | a | 56.48 | 68.05 | 65.21 | 55.28 | 44.23 | 29.62 | a | 19.77 | a | 42.12 | ||||||||||
1952 | 12.79 | 14.40 | c | 23.93 | b | 42.45 | 53.79 | j | 61.25 | 65.50 | 64.38 | b | 58.63 | 46.65 | 25.70 | 19.48 | 39.56 | a | ||||||||
1953 | 24.52 | e | 22.23 | 33.81 | 38.62 | a | 46.48 | 60.82 | e | 68.33 | a | 64.10 | 57.95 | 45.90 | 35.58 | 18.95 | 43.11 | |||||||||
1954 | 25.60 | 30.45 | 30.56 | 45.35 | 53.71 | 59.10 | 69.47 | 64.34 | 58.02 | a | 46.26 | 37.80 | b | 19.21 | e | 44.99 | ||||||||||
1955 | 14.58 | 14.11 | 24.23 | 38.91 | a | 49.86 | j | 59.64 | e | 68.10 | b | 67.73 | a | 58.03 | 45.63 | a | 26.31 | a | 29.39 | h | 41.73 | b | ||||
1956 | 26.40 | f | 12.57 | 28.44 | 42.68 | 53.80 | a | 63.27 | f | 65.39 | 62.78 | a | 57.90 | 45.91 | b | 23.53 | 17.59 | d | 41.06 | b | ||||||
1957 | 13.11 | d | 24.18 | 30.55 | 41.08 | 49.19 | 58.69 | a | 65.74 | 65.08 | 53.87 | 46.23 | 28.20 | 23.78 | a | 41.64 | ||||||||||
1958 | 17.66 | 30.57 | 31.06 | 40.03 | 55.98 | 61.85 | 64.40 | 66.84 | 56.68 | 45.00 | 31.32 | 28.11 | 44.13 | |||||||||||||
1959 | 20.00 | 25.61 | 31.02 | a | 41.75 | 51.15 | 63.32 | 66.47 | 64.77 | 54.81 | a | 43.28 | a | 32.53 | 26.21 | 43.41 | ||||||||||
1960 | 19.77 | 15.84 | 32.44 | 44.47 | 50.77 | 61.43 | 68.03 | 64.61 | 59.95 | 46.24 | 32.60 | 20.44 | 43.05 | |||||||||||||
1961 | 18.77 | 27.80 | 33.05 | 40.85 | 52.98 | 63.70 | 67.76 | 67.68 | 50.75 | 43.77 | 29.73 | 17.89 | 42.90 | |||||||||||||
1962 | 9.82 | 25.04 | 25.21 | 46.07 | 52.89 | 60.72 | 65.39 | 63.78 | a | 55.37 | d | 46.82 | 37.20 | 23.71 | 42.67 | |||||||||||
1963 | 11.97 | a | 31.80 | 31.52 | 41.28 | 54.87 | 59.92 | 69.05 | 66.03 | 60.57 | 50.71 | 34.58 | 19.61 | 44.33 | ||||||||||||
1964 | 13.40 | 13.45 | 21.15 | 40.77 | 51.44 | 58.38 | 69.29 | 63.27 | 55.80 | ----- | z | 28.95 | 19.77 | 39.61 | a | |||||||||||
1965 | 20.61 | 18.59 | 19.84 | 42.65 | 49.66 | 57.77 | 65.60 | 63.05 | ----- | z | 47.63 | 37.90 | 23.55 | 40.62 | a | |||||||||||
1966 | 16.94 | 20.12 | 33.23 | 41.33 | 53.55 | 59.95 | 69.13 | 64.82 | 58.72 | 44.37 | 37.40 | 18.34 | 43.16 | |||||||||||||
1967 | 22.29 | 22.38 | 36.35 | 42.83 | 48.84 | 57.65 | 66.37 | 65.60 | 57.53 | 45.74 | 32.37 | 14.06 | 42.67 | |||||||||||||
1968 | 12.42 | 22.03 | 29.98 | 36.78 | 48.55 | 59.65 | 66.63 | 61.16 | 53.05 | 45.27 | 27.12 | 18.81 | 40.12 | |||||||||||||
1969 | 25.21 | 22.62 | 24.31 | 44.92 | 56.15 | 56.78 | 67.23 | 67.15 | 59.32 | 38.97 | 30.75 | 23.68 | 43.09 | |||||||||||||
1970 | 20.69 | 27.07 | 29.98 | 36.53 | 51.81 | 58.98 | 66.34 | 66.95 | 53.35 | 39.03 | 34.22 | 22.61 | 42.30 | |||||||||||||
1971 | 22.32 | 21.16 | 29.18 | 42.93 | 49.61 | 60.23 | 66.58 | 67.55 | 51.50 | 42.85 | 31.42 | 16.35 | 41.81 | |||||||||||||
1972 | 20.66 | 26.93 | 39.58 | 43.68 | 51.40 | 62.22 | 66.11 | 65.48 | 56.33 | 46.74 | 29.48 | 13.53 | 43.51 | |||||||||||||
1973 | 9.24 | 15.38 | 29.71 | 37.88 | 50.53 | ----- | z | 65.66 | 66.66 | 54.62 | 47.08 | 28.08 | 18.45 | 38.48 | a | |||||||||||
1974 | 12.94 | 14.12 | 35.27 | 40.67 | 52.90 | 61.82 | 67.03 | 62.90 | 54.28 | 47.40 | 33.68 | 17.27 | 41.69 | |||||||||||||
1975 | 15.81 | 20.30 | 30.73 | 37.80 | 48.29 | 56.72 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.94 | f | ||||||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.22 | 69.27 | 63.58 | 56.30 | 39.08 | ----- | z | ----- | z | 57.49 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 16.85 | 21.77 | 30.40 | 41.98 | 51.52 | 59.42 | 66.58 | 64.90 | 56.04 | 45.11 | 31.51 | 21.37 | 42.62 | |||||||||||||
S.D. | 4.95 | 5.49 | 4.23 | 2.91 | 2.59 | 2.43 | 1.93 | 1.64 | 2.88 | 2.58 | 4.10 | 3.73 | 1.07 | |||||||||||||
SKEW | -0.25 | -0.32 | -0.47 | -0.02 | -0.15 | 0.30 | -0.19 | 0.04 | -1.38 | -0.56 | -0.27 | 0.18 | -0.11 | |||||||||||||
MAX | 25.60 | 31.80 | 39.58 | 48.28 | 56.26 | 65.85 | 71.60 | 67.81 | 60.57 | 50.71 | 38.67 | 28.93 | 44.99 | |||||||||||||
MIN | 4.67 | 9.16 | 19.84 | 36.53 | 46.45 | 55.20 | 60.58 | 61.16 | 45.17 | 38.97 | 21.28 | 13.53 | 40.12 | |||||||||||||
YRS | 40 | 40 | 39 | 39 | 38 | 40 | 42 | 40 | 42 | 41 | 42 | 39 | 31 |