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 | ----- | 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 | 72.13 | 69.30 | 60.97 | 44.03 | 29.90 | 55.27 | g | |||||
1964 | 24.52 | 25.00 | 31.00 | 44.47 | 59.77 | 67.73 | 76.06 | 69.58 | 64.23 | 59.81 | 40.21 | a | 27.03 | 49.12 | ||||||||||||
1965 | 28.87 | 28.15 | a | 29.42 | 46.80 | 56.45 | 65.07 | 72.48 | 69.26 | 59.80 | 59.61 | 41.10 | 32.10 | 49.09 | ||||||||||||
1966 | 23.10 | 26.11 | 40.65 | 49.77 | 62.77 | 68.23 | 78.10 | 75.23 | 69.57 | 56.29 | 44.30 | 26.58 | 51.72 | |||||||||||||
1967 | 27.16 | 31.29 | 42.65 | 50.20 | 57.03 | 65.97 | 74.32 | 69.87 | 65.07 | 57.32 | 43.73 | 27.42 | 51.00 | |||||||||||||
1968 | 27.03 | 33.10 | 38.42 | 42.83 | 56.81 | 71.73 | 73.74 | 67.77 | 64.37 | 56.90 | 36.90 | 30.84 | 50.04 | |||||||||||||
1969 | 33.48 | 28.43 | 33.00 | 52.17 | 64.10 | 64.60 | 74.39 | 74.39 | 66.90 | 43.13 | a | 37.47 | 33.16 | 50.43 | ||||||||||||
1970 | 26.06 | 35.21 | 33.35 | 41.67 | 60.84 | 67.53 | 73.42 | 72.45 | 62.55 | a | 46.40 | a | 39.53 | 29.35 | 49.03 | |||||||||||
1971 | 31.16 | 31.18 | 38.43 | a | 47.93 | a | 56.42 | 68.93 | 72.06 | 70.55 | 63.43 | 53.10 | a | 39.37 | 28.06 | 50.05 | ||||||||||
1972 | 28.06 | 34.18 | a | 44.58 | 49.60 | 59.26 | 68.50 | 74.77 | 71.17 | a | 63.13 | 52.87 | a | 33.37 | 26.57 | a | 50.50 | |||||||||
1973 | 25.16 | 31.96 | 36.84 | 42.40 | 56.55 | 66.53 | 71.67 | a | 71.39 | 62.66 | a | 56.35 | 43.27 | 29.10 | 49.49 | |||||||||||
1974 | 24.61 | 28.39 | 42.48 | 46.17 | 63.39 | 69.80 | 74.26 | 69.61 | 69.63 | 67.55 | 41.70 | 26.48 | 52.01 | |||||||||||||
1975 | 27.27 | a | 30.11 | 38.03 | 45.00 | 54.97 | 66.03 | 75.29 | 71.81 | 68.93 | 59.10 | a | 42.60 | 30.16 | 50.77 | |||||||||||
1976 | 26.00 | 35.72 | 37.32 | 48.21 | b | 58.00 | a | 68.67 | 72.52 | 68.06 | 63.30 | 52.61 | ----- | z | ----- | z | 53.04 | b | ||||||||
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.55 | 66.63 | 57.53 | a | 41.48 | a | 30.76 | b | 53.79 | g | ||
1978 | 27.61 | 31.11 | 40.23 | 50.10 | 55.48 | 70.23 | 72.10 | 68.29 | 64.33 | 54.00 | 34.66 | a | 14.77 | a | 48.58 | |||||||||||
1979 | 16.13 | 23.92 | b | 32.39 | 43.00 | a | 54.10 | 67.40 | 70.06 | 69.00 | 67.93 | a | 54.55 | 28.55 | a | 26.71 | 46.15 | |||||||||
1980 | 26.23 | 30.48 | 33.71 | 41.00 | 53.32 | 70.37 | 72.45 | 70.74 | 65.73 | 49.58 | ----- | z | 31.26 | 49.53 | a | |||||||||||
1981 | 27.33 | a | 31.25 | 36.90 | 53.90 | 56.45 | 72.55 | a | 72.55 | b | 70.70 | a | 66.33 | 52.93 | b | 45.47 | 32.27 | a | 51.55 | |||||||
1982 | 28.67 | a | 30.04 | 38.19 | d | 47.19 | c | 55.75 | c | 66.27 | 72.96 | e | 71.32 | f | 62.04 | c | 52.45 | i | 38.32 | e | 34.08 | f | 48.82 | c | ||
1983 | 35.88 | g | 36.83 | e | 39.66 | b | 42.23 | h | 55.75 | c | 66.39 | g | 73.84 | f | 73.83 | a | 69.32 | e | 58.17 | g | 40.74 | c | 25.71 | j | 52.69 | f |
1984 | 23.92 | f | 31.83 | e | 39.20 | f | 44.00 | h | 60.00 | g | 64.46 | d | 73.79 | g | 69.71 | g | 65.75 | b | 45.35 | e | 42.35 | j | 37.89 | d | 49.06 | g |
1985 | 28.79 | g | 30.68 | f | 39.31 | e | 49.50 | h | 59.26 | d | 69.92 | d | 72.71 | g | 73.38 | g | 62.42 | f | 56.47 | l | 38.65 | j | 32.52 | f | 56.16 | i |
1986 | 37.79 | l | 36.00 | u | 45.19 | j | 55.32 | k | 58.27 | i | 69.74 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.58 | 30.71 | 37.33 | 46.80 | 57.82 | 68.03 | 73.51 | 70.92 | 65.50 | 54.80 | 39.83 | 28.97 | 49.97 | |||||||||||||
S.D. | 3.56 | 3.42 | 4.07 | 3.76 | 3.05 | 2.30 | 1.85 | 2.09 | 2.80 | 5.75 | 4.25 | 4.49 | 1.49 | |||||||||||||
SKEW | -1.01 | -0.18 | -0.24 | 0.10 | 0.71 | 0.19 | 0.62 | 0.40 | -0.01 | -0.15 | -1.05 | -1.29 | -0.92 | |||||||||||||
MAX | 33.48 | 36.83 | 44.58 | 53.90 | 64.10 | 72.55 | 78.10 | 75.23 | 69.63 | 67.55 | 45.47 | 37.89 | 52.01 | |||||||||||||
MIN | 16.13 | 23.92 | 29.42 | 41.00 | 53.32 | 64.46 | 70.06 | 67.77 | 59.80 | 43.13 | 28.55 | 14.77 | 46.15 | |||||||||||||
YRS | 18 | 20 | 20 | 18 | 20 | 20 | 18 | 20 | 22 | 20 | 19 | 19 | 15 |