YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 85.10 | ----- | z | ----- | z | ----- | z | ----- | z | 85.10 | k | |
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 | 49.89 | v | 51.47 | 49.61 | 50.54 | j | ||
1959 | 41.74 | 39.11 | 43.74 | 53.50 | 62.65 | 73.40 | 76.35 | 74.81 | 69.33 | 58.13 | 51.03 | 45.03 | 57.40 | |||||||||||||
1960 | 38.29 | 33.69 | 46.77 | 56.37 | 61.97 | 75.20 | 73.97 | 77.61 | 70.73 | 58.00 | 52.33 | f | 39.81 | 57.49 | a | |||||||||||
1961 | 44.19 | 41.59 | a | 42.61 | 50.41 | a | 61.61 | 70.53 | 71.74 | 69.10 | 62.27 | 57.74 | 43.00 | 36.80 | a | 54.30 | ||||||||||
1962 | 37.71 | 40.86 | 39.19 | 53.93 | 64.32 | 69.13 | 71.14 | b | 76.17 | a | 66.43 | 61.32 | 50.19 | c | 44.39 | 56.23 | ||||||||||
1963 | 33.57 | c | 41.61 | 42.73 | a | 54.13 | 64.19 | 70.00 | 76.87 | a | 68.81 | 70.03 | 64.63 | a | 53.80 | 44.35 | 57.06 | |||||||||
1964 | 37.48 | 33.97 | 40.35 | 50.53 | 63.45 | 71.60 | 78.13 | a | 74.32 | 67.47 | 62.19 | 46.69 | a | 39.58 | 55.48 | |||||||||||
1965 | 42.52 | 39.89 | 36.94 | 52.78 | c | 59.74 | 66.97 | 74.73 | a | 71.45 | 64.59 | a | 62.77 | 52.13 | 45.03 | 55.80 | ||||||||||
1966 | 37.29 | 36.79 | 50.00 | 54.87 | 65.97 | a | 71.13 | 77.74 | 71.87 | 69.23 | 60.48 | 52.52 | a | 43.43 | a | 57.61 | ||||||||||
1967 | 42.74 | 41.68 | 51.58 | 56.07 | 62.26 | 68.47 | 73.81 | 68.61 | 66.00 | 60.71 | 51.79 | a | 36.23 | 56.66 | ||||||||||||
1968 | 42.39 | 43.07 | 44.43 | a | 47.77 | 59.03 | a | 75.07 | a | 73.42 | 69.81 | 67.13 | 61.23 | 46.10 | 41.23 | 55.89 | ||||||||||
1969 | 43.16 | 40.46 | 39.40 | a | 56.17 | 64.45 | 66.47 | 75.52 | 74.74 | 67.87 | 52.26 | 47.83 | 42.00 | 55.86 | ||||||||||||
1970 | 38.13 | h | 46.76 | c | 39.71 | 48.83 | 64.97 | 71.53 | 76.23 | 75.48 | 68.33 | 52.29 | 47.20 | 43.84 | 57.74 | a | ||||||||||
1971 | 41.42 | 39.11 | 48.00 | 53.00 | 60.77 | 75.00 | 72.45 | 71.77 | 65.97 | 56.94 | 49.50 | 39.61 | 56.13 | |||||||||||||
1972 | 42.13 | 45.48 | 53.55 | 57.30 | 63.29 | 73.83 | 77.35 | 72.81 | 68.37 | 57.68 | 39.77 | 41.65 | 57.77 | |||||||||||||
1973 | 39.74 | 41.14 | 43.16 | 46.31 | a | 59.74 | 72.77 | 74.65 | 75.52 | 67.67 | 61.00 | 51.63 | 43.77 | 56.43 | ||||||||||||
1974 | 39.13 | 41.89 | 51.58 | 53.38 | a | 68.94 | 75.53 | 76.65 | 71.58 | 67.00 | 59.10 | 47.27 | 38.03 | 57.51 | ||||||||||||
1975 | 40.06 | 38.29 | 44.07 | a | 50.30 | 61.55 | 71.57 | 73.81 | 75.68 | 65.70 | 59.71 | 48.80 | 44.61 | 56.18 | ||||||||||||
1976 | 43.58 | 50.21 | 48.52 | 57.07 | 64.23 | 74.00 | 79.94 | 76.81 | 68.20 | 57.10 | 51.00 | 44.45 | 59.59 | |||||||||||||
1977 | 39.39 | 42.36 | 43.83 | a | 55.07 | 66.13 | 76.41 | a | 78.87 | 76.42 | 70.87 | ----- | z | ----- | z | 44.52 | 59.39 | b | ||||||||
1978 | 39.77 | ----- | z | 47.71 | ----- | z | 59.52 | 71.63 | 78.97 | 75.16 | 72.40 | 62.97 | ----- | z | ----- | z | 63.52 | d | ||||||||
1979 | 35.48 | 41.43 | 44.43 | a | 54.73 | 59.35 | 68.47 | ----- | z | 73.10 | 71.70 | 63.30 | a | 38.70 | 46.63 | a | 54.30 | a | ||||||||
1980 | 42.58 | 42.17 | 44.23 | 49.87 | 57.32 | ----- | z | ----- | z | ----- | z | 73.87 | 61.65 | ----- | z | ----- | z | 53.10 | e | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.21 | 41.03 | 44.84 | 52.97 | 62.52 | 71.84 | 75.62 | 73.94 | 68.23 | 59.58 | 48.44 | 42.60 | 56.62 | |||||||||||||
S.D. | 2.83 | 3.77 | 4.45 | 3.15 | 2.80 | 2.89 | 2.50 | 3.69 | 2.69 | 3.27 | 4.21 | 3.34 | 1.21 | |||||||||||||
SKEW | -0.62 | 0.20 | 0.24 | -0.51 | 0.22 | -0.23 | -0.07 | 0.95 | 0.06 | -0.79 | -1.04 | -0.21 | 0.57 | |||||||||||||
MAX | 44.19 | 50.21 | 53.55 | 57.30 | 68.94 | 76.41 | 79.94 | 85.10 | 73.87 | 64.63 | 53.80 | 49.61 | 59.59 | |||||||||||||
MIN | 33.57 | 33.69 | 36.94 | 46.31 | 57.32 | 66.47 | 71.14 | 68.61 | 62.27 | 52.26 | 38.70 | 36.23 | 54.30 | |||||||||||||
YRS | 21 | 21 | 22 | 21 | 22 | 21 | 20 | 22 | 22 | 21 | 19 | 21 | 16 |