YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | 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 | 20.83 | y | 28.53 | 44.58 | 50.40 | 58.87 | 55.42 | 47.97 | 36.32 | 26.03 | 16.77 | 40.54 | c | |||||||||
1921 | 18.39 | 21.50 | 30.03 | 29.67 | 41.93 | a | 51.67 | 56.87 | 55.03 | 48.23 | 44.45 | 31.67 | 24.97 | 37.87 | ||||||||||||
1922 | 12.00 | 17.32 | 22.90 | 28.73 | 35.48 | 42.47 | 50.89 | d | 58.68 | 51.90 | a | 39.35 | 27.13 | 23.47 | a | 34.19 | ||||||||||
1923 | 21.16 | 18.96 | 23.29 | 33.10 | 44.03 | a | 48.68 | b | 59.81 | 55.10 | 46.23 | 34.39 | 29.97 | 19.07 | a | 36.15 | ||||||||||
1924 | 12.60 | a | 25.71 | a | 21.61 | 32.00 | a | 43.52 | 49.37 | 56.65 | 53.97 | 46.57 | 35.87 | 27.87 | 13.60 | a | 34.94 | |||||||||
1925 | 12.74 | 20.71 | 28.23 | 35.57 | 42.97 | 57.40 | o | 60.36 | c | 54.68 | 47.57 | 37.81 | 26.10 | 22.45 | 35.38 | a | ||||||||||
1926 | 17.39 | 23.64 | 28.68 | 37.30 | 43.29 | 52.67 | 56.48 | 55.77 | 46.33 | 39.35 | 28.53 | 16.61 | 37.17 | |||||||||||||
1927 | 19.13 | 21.00 | 25.10 | 33.60 | 41.03 | 50.90 | 57.32 | 54.19 | 47.72 | a | 39.48 | 29.43 | 15.13 | a | 36.17 | |||||||||||
1928 | 20.90 | 21.52 | 30.03 | 31.43 | 44.65 | 47.80 | 55.81 | 54.23 | 49.40 | 39.90 | a | 27.07 | a | 17.30 | a | 36.67 | ||||||||||
1929 | 15.73 | a | 13.68 | 24.73 | a | 31.10 | 40.97 | 49.00 | 58.07 | a | 57.00 | 45.83 | 38.42 | 24.97 | 23.00 | 35.21 | ||||||||||
1930 | 9.06 | 23.71 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.39 | j | ||
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 | 47.03 | 52.80 | 55.85 | e | 58.70 | k | 47.76 | i | 40.10 | j | 25.30 | j | 23.18 | i | 51.89 | i | ||
1959 | 13.23 | i | 18.05 | f | 20.52 | h | 32.80 | j | 38.12 | e | 52.96 | d | 57.82 | c | 55.11 | d | 44.74 | c | 37.46 | r | 22.31 | d | 18.27 | e | 41.33 | e |
1960 | 12.18 | c | 13.83 | f | 26.93 | b | 31.41 | c | 38.21 | b | 51.19 | d | 57.10 | b | 55.59 | d | 49.73 | d | 39.79 | b | 26.19 | c | 16.93 | c | 36.84 | a |
1961 | 17.41 | d | 20.15 | a | 24.74 | 30.83 | 40.50 | a | ----- | z | 57.47 | a | 56.63 | d | 40.17 | 34.58 | 21.00 | 12.03 | a | 32.32 | a | |||||
1962 | 14.84 | 23.73 | b | ----- | z | 33.53 | 40.48 | 45.66 | a | 61.53 | a | 55.27 | a | 41.90 | 35.26 | 32.10 | 16.55 | 36.44 | a | |||||||
1963 | 10.16 | 24.26 | a | 24.17 | a | 28.32 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.73 | h | |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | 33.67 | u | 44.26 | 51.20 | 56.93 | a | 55.48 | 50.14 | a | 36.87 | a | 31.27 | 18.45 | 43.07 | d | |||||
1967 | 13.77 | 19.18 | 25.83 | b | 28.93 | 37.30 | a | 45.67 | 56.61 | 55.90 | a | 48.37 | 37.97 | 27.87 | 10.45 | 33.99 | ||||||||||
1968 | 13.45 | 22.21 | 25.00 | a | 25.50 | 38.94 | 50.00 | 53.32 | 50.13 | 42.70 | 37.84 | 26.21 | a | 10.90 | 33.02 | |||||||||||
1969 | 16.26 | 18.04 | 20.16 | 32.47 | 45.81 | 51.20 | 56.48 | 58.87 | 48.87 | 33.23 | 22.93 | 19.52 | 35.32 | |||||||||||||
1970 | 17.74 | 27.93 | 22.29 | 23.07 | 41.93 | a | 45.47 | 59.52 | 54.97 | 45.50 | 29.52 | 22.80 | 16.23 | 33.91 | ||||||||||||
1971 | 16.52 | b | 24.43 | 20.39 | 37.67 | 37.61 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.73 | h | 16.19 | 25.47 | f | ||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | 42.83 | m | 50.52 | g | 53.35 | n | 52.82 | i | 42.90 | j | 36.78 | h | 22.83 | x | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.59 | m | 53.24 | n | 52.70 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | 25.55 | t | 26.29 | i | 39.86 | i | 50.85 | j | 54.44 | o | 51.08 | e | 44.35 | d | 39.23 | a | 24.88 | d | 12.46 | e | 34.40 | g |
1975 | 10.80 | a | 13.29 | 20.55 | 24.79 | a | 33.68 | 43.03 | 55.39 | 50.45 | 45.40 | 31.46 | c | 20.00 | 16.06 | 30.41 | ||||||||||
1976 | 11.72 | b | 20.32 | a | 17.19 | 29.17 | 40.90 | 42.74 | g | 53.30 | k | 52.29 | 48.22 | c | 32.94 | 25.57 | 15.32 | 29.36 | b | |||||||
1977 | 12.10 | 19.74 | a | 17.77 | 33.93 | 38.17 | a | 52.46 | d | 55.45 | 54.87 | 45.83 | a | 36.34 | b | 24.50 | 18.90 | 34.17 | ||||||||
1978 | 15.71 | 15.39 | 26.87 | 31.67 | c | 35.97 | 46.83 | 53.65 | 51.32 | 43.90 | 39.03 | 26.03 | 8.94 | 32.94 | ||||||||||||
1979 | 5.74 | d | 8.61 | e | 21.10 | 28.57 | 39.39 | 46.90 | 53.21 | b | 50.68 | 44.17 | 32.81 | 16.37 | 16.00 | b | 30.29 | |||||||||
1980 | 15.28 | b | 18.36 | a | 18.10 | 28.30 | 36.13 | 45.28 | a | 54.42 | 50.13 | 45.43 | 35.65 | 26.69 | a | 25.65 | 33.28 | |||||||||
1981 | 22.00 | 18.71 | 24.61 | 33.60 | 37.75 | c | 49.80 | 55.13 | 53.52 | 47.97 | 33.90 | 27.93 | 17.26 | 35.18 | ||||||||||||
1982 | 9.65 | 14.64 | 22.78 | d | 26.55 | a | 36.97 | 44.61 | b | 52.87 | 54.00 | 45.60 | 30.07 | a | 20.60 | 14.48 | 31.07 | |||||||||
1983 | 17.32 | 18.67 | a | 25.21 | b | 25.74 | c | 36.34 | b | 45.71 | b | 52.07 | c | 54.93 | b | 46.48 | a | 36.62 | b | 22.72 | a | 11.97 | b | 32.82 | ||
1984 | 11.13 | 13.46 | a | 21.03 | b | 27.17 | 40.83 | a | 43.55 | a | 52.37 | a | 52.87 | 41.67 | 27.83 | b | 21.77 | 14.63 | a | 30.69 | ||||||
1985 | 12.83 | a | 10.32 | 20.90 | 33.41 | a | 39.52 | 48.00 | a | 55.20 | a | 51.26 | 40.17 | a | 34.96 | h | 21.03 | 17.03 | 31.79 | a | ||||||
1986 | 18.74 | 21.39 | 26.23 | 29.34 | a | 37.55 | 49.31 | a | 52.55 | 54.77 | 42.31 | a | 33.65 | 23.40 | 17.68 | 33.91 | ||||||||||
1987 | 11.97 | 18.57 | 21.23 | 32.45 | a | 40.97 | 49.07 | a | 51.35 | 50.48 | 44.97 | a | 39.16 | 24.79 | a | 14.45 | 33.29 | |||||||||
1988 | 10.20 | a | 17.62 | 19.48 | 31.45 | a | 38.13 | 51.77 | 57.00 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.24 | e | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.44 | 19.27 | 23.46 | 30.57 | 40.14 | 48.56 | 55.89 | 54.08 | 45.95 | 36.10 | 25.39 | 16.73 | 34.03 | |||||||||||||
S.D. | 3.86 | 4.39 | 3.46 | 3.45 | 3.24 | 3.08 | 2.65 | 2.35 | 2.84 | 3.61 | 3.60 | 3.96 | 2.11 | |||||||||||||
SKEW | 0.07 | -0.46 | 0.13 | -0.04 | 0.20 | -0.35 | -0.00 | -0.15 | -0.23 | -0.28 | -0.20 | 0.39 | -0.18 | |||||||||||||
MAX | 22.00 | 27.93 | 30.03 | 37.67 | 47.03 | 52.96 | 61.53 | 58.87 | 51.90 | 44.45 | 32.10 | 25.65 | 37.87 | |||||||||||||
MIN | 5.74 | 8.61 | 17.19 | 23.07 | 33.68 | 42.47 | 50.89 | 50.13 | 40.17 | 27.83 | 16.37 | 8.94 | 30.29 | |||||||||||||
YRS | 33 | 32 | 31 | 33 | 35 | 31 | 33 | 33 | 33 | 31 | 33 | 34 | 23 |