YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.39 | 37.32 | 26.48 | b | 37.73 | i | ||
1905 | 25.21 | 30.04 | a | 43.98 | a | 49.69 | c | 53.18 | 65.41 | a | 69.57 | a | 70.70 | a | 63.20 | 46.87 | 40.34 | a | 20.73 | 48.24 | ||||||
1906 | 24.30 | a | 37.20 | 40.60 | a | 49.88 | a | 57.24 | 63.74 | a | 70.78 | a | 70.18 | 61.36 | a | 48.89 | 39.03 | a | 33.87 | a | 49.76 | |||||
1907 | 32.55 | 41.22 | a | 44.74 | 50.37 | 53.08 | 60.93 | 70.57 | a | 69.18 | 60.70 | 54.70 | a | 36.77 | 28.05 | a | 50.24 | |||||||||
1908 | 23.63 | 29.43 | 39.76 | d | 50.62 | b | 53.58 | a | 64.31 | n | 74.26 | j | 69.03 | 61.75 | 45.68 | 36.05 | 23.74 | 43.33 | b | |||||||
1909 | 29.44 | 29.58 | b | 40.43 | c | 45.02 | b | 54.60 | ----- | z | 72.63 | 72.48 | 62.27 | 51.45 | a | 37.38 | a | 17.00 | b | 46.57 | a | |||||
1910 | 21.87 | 27.98 | 48.32 | 51.18 | 59.97 | o | 68.21 | b | 73.19 | o | 71.44 | 65.00 | d | 50.95 | j | 43.43 | a | 31.50 | b | 47.66 | c | |||||
1911 | 28.48 | i | 37.67 | y | 46.00 | q | 49.90 | 57.06 | e | 65.10 | d | 70.27 | 69.29 | b | 63.38 | 48.18 | 34.10 | a | 23.88 | a | 53.46 | c | ||||
1912 | 25.10 | 32.74 | 40.26 | 45.68 | 54.48 | 63.96 | b | 70.26 | 69.09 | b | 55.20 | b | 47.38 | a | 38.29 | a | 20.82 | c | 46.94 | |||||||
1913 | ----- | z | 30.91 | a | 39.91 | b | 51.90 | 60.85 | a | 66.18 | b | 70.07 | a | 74.06 | 61.28 | a | 47.09 | b | 41.57 | a | 26.86 | f | 54.38 | b | ||
1914 | 24.50 | d | 30.26 | g | 41.10 | a | 50.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.61 | i | |
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 | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | 54.92 | 63.47 | a | 72.74 | 70.76 | 57.57 | 54.84 | 43.62 | 31.16 | 56.13 | d | |||||||
1966 | 23.26 | 27.77 | 41.34 | 49.18 | 60.61 | 68.07 | 78.82 | 74.42 | 66.74 | a | 51.28 | a | 42.45 | a | 28.53 | 51.04 | ||||||||||
1967 | 26.19 | 35.39 | 44.74 | 49.96 | c | 58.03 | 65.97 | 76.28 | a | 74.24 | 66.25 | 53.63 | 39.97 | 20.39 | 50.92 | |||||||||||
1968 | 19.00 | 34.66 | 42.48 | 45.07 | a | 56.30 | a | 69.45 | 74.33 | a | 67.93 | a | 60.57 | a | 51.52 | a | 35.77 | 22.37 | 48.29 | |||||||
1969 | 26.21 | 30.12 | 36.56 | 51.57 | 62.02 | 65.72 | 75.13 | 75.24 | 64.10 | 44.05 | 35.55 | 30.16 | 49.70 | |||||||||||||
1970 | 27.56 | 38.14 | 37.97 | 43.82 | 60.31 | 67.58 | 75.39 | 75.35 | 61.00 | 46.05 | 38.10 | 29.98 | 50.10 | |||||||||||||
1971 | 26.95 | 32.82 | 38.20 | a | 48.98 | 56.21 | 69.95 | 74.66 | b | 74.73 | 59.36 | a | 49.68 | 35.00 | 22.73 | 49.11 | ||||||||||
1972 | 26.92 | 33.98 | 45.55 | 49.65 | 59.61 | 70.00 | 75.52 | 72.48 | 62.63 | 51.11 | 34.55 | 20.39 | 50.20 | |||||||||||||
1973 | 15.79 | 30.34 | 40.97 | 46.05 | 57.37 | 65.08 | 72.53 | 72.29 | 61.32 | 51.55 | 37.62 | 26.10 | 48.08 | |||||||||||||
1974 | 18.08 | 21.89 | 42.94 | 47.40 | 60.42 | 70.88 | 74.94 | 70.82 | a | 63.07 | 53.31 | 37.17 | 23.73 | 48.72 | ||||||||||||
1975 | 19.60 | 29.77 | 39.73 | 44.35 | 55.68 | 64.22 | 75.37 | 70.39 | 62.62 | 48.98 | 34.02 | 25.18 | a | 47.49 | ||||||||||||
1976 | 21.11 | 34.91 | 36.58 | 48.88 | 59.89 | 67.02 | 76.29 | 70.19 | 64.07 | 48.37 | 37.23 | 25.63 | 49.18 | |||||||||||||
1977 | 21.05 | 33.66 | 36.58 | 52.07 | 59.63 | 73.60 | 75.63 | 73.34 | 65.23 | 52.60 | 38.18 | 30.79 | 51.03 | |||||||||||||
1978 | 28.95 | 32.59 | 44.24 | 50.73 | 56.56 | 67.87 | 74.37 | 69.82 | 61.93 | 52.06 | 38.53 | 16.06 | 49.48 | |||||||||||||
1979 | 16.03 | a | 24.43 | 37.35 | 48.32 | 57.76 | 66.77 | 74.27 | 70.77 | 66.18 | 53.90 | 32.22 | 27.15 | a | 47.93 | |||||||||||
1980 | 30.92 | 35.78 | 39.16 | 50.30 | 57.19 | 68.95 | 76.48 | 71.74 | 64.60 | 51.34 | 38.33 | 37.44 | 51.85 | |||||||||||||
1981 | 34.40 | 34.77 | 42.77 | 54.63 | 59.34 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.18 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.53 | 32.09 | 41.05 | 49.06 | 57.44 | 66.87 | 73.78 | 71.60 | 62.45 | 50.16 | 37.79 | 25.75 | 49.38 | |||||||||||||
S.D. | 4.90 | 4.32 | 3.09 | 2.66 | 2.59 | 2.86 | 2.53 | 2.16 | 2.68 | 2.96 | 2.88 | 5.22 | 1.34 | |||||||||||||
SKEW | 0.03 | -0.25 | 0.38 | -0.39 | -0.07 | 0.24 | -0.21 | 0.30 | -0.68 | -0.22 | 0.34 | 0.17 | -0.01 | |||||||||||||
MAX | 34.40 | 41.22 | 48.32 | 54.63 | 62.02 | 73.60 | 78.82 | 75.35 | 66.74 | 54.84 | 43.62 | 37.44 | 51.85 | |||||||||||||
MIN | 15.79 | 21.89 | 36.56 | 43.82 | 53.08 | 60.93 | 69.57 | 67.93 | 55.20 | 44.05 | 32.22 | 16.06 | 46.94 | |||||||||||||
YRS | 24 | 24 | 25 | 26 | 25 | 23 | 23 | 25 | 25 | 25 | 26 | 25 | 19 |