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 | 30.17 | y | 38.43 | 56.05 | 63.97 | 72.32 | 67.42 | 59.92 | 46.21 | 34.02 | 23.90 | a | 51.36 | c | ||||||||
1921 | 26.40 | 30.84 | 40.66 | 42.12 | a | 54.15 | a | 65.08 | 72.43 | a | 66.58 | 61.68 | 55.23 | 41.08 | 32.45 | a | 49.06 | |||||||||
1922 | 21.32 | a | 25.52 | 32.42 | 40.40 | 51.57 | a | 61.67 | 69.24 | d | 70.47 | 64.98 | a | 51.45 | a | 35.32 | 30.58 | a | 46.24 | |||||||
1923 | 29.77 | 27.33 | a | 32.71 | 43.47 | 55.67 | a | 62.68 | b | 72.39 | 67.27 | 58.60 | 44.42 | 38.60 | 27.21 | b | 46.68 | |||||||||
1924 | 22.48 | a | 35.45 | a | 31.31 | 44.07 | a | 56.61 | 65.20 | 70.34 | 68.55 | 59.63 | 47.18 | 36.97 | 21.85 | a | 46.64 | |||||||||
1925 | 20.73 | 30.39 | 38.52 | 48.63 | 59.24 | 70.18 | p | 72.84 | c | 66.65 | 58.58 | 47.60 | 34.53 | 30.22 | a | 46.17 | a | |||||||||
1926 | 26.16 | 33.07 | 39.27 | 49.17 | 55.87 | 67.91 | a | 70.56 | 70.00 | 60.42 | 52.85 | 39.30 | 25.73 | 49.19 | ||||||||||||
1927 | 28.71 | 31.27 | 36.31 | 45.88 | 55.11 | 64.50 | 70.95 | 67.47 | 59.72 | a | 52.29 | 39.88 | 24.50 | a | 48.05 | |||||||||||
1928 | 31.42 | 32.31 | 41.16 | 44.42 | 57.50 | a | 62.42 | 70.92 | 68.19 | 63.45 | 51.67 | a | 36.48 | a | 27.23 | a | 48.93 | |||||||||
1929 | 25.37 | a | 23.16 | 36.42 | a | 42.75 | 54.66 | 63.70 | 71.55 | a | 70.87 | 58.50 | 51.00 | a | 36.28 | 34.23 | 47.37 | |||||||||
1930 | 18.81 | 34.41 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.61 | 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 | 59.87 | 67.37 | 70.50 | f | 71.97 | l | 60.52 | j | 55.08 | l | 37.27 | j | 34.38 | n | 63.62 | j | ||
1959 | 27.72 | o | 30.57 | h | 34.83 | h | 46.68 | m | 52.87 | e | 68.18 | e | 72.34 | c | 68.85 | d | 58.07 | c | 50.15 | r | 37.04 | d | 29.60 | f | 59.56 | f |
1960 | 21.89 | c | 24.22 | f | 38.14 | c | 45.09 | c | 53.48 | b | 66.86 | e | 73.52 | c | 69.98 | d | 63.98 | d | 51.93 | c | 37.31 | c | 28.54 | c | 50.07 | a |
1961 | 30.24 | d | 33.00 | a | 35.15 | 44.55 | 54.42 | a | ----- | z | 72.65 | a | 69.73 | e | 53.28 | 49.42 | 32.77 | 23.19 | b | 45.31 | a | |||||
1962 | 25.34 | 33.29 | b | ----- | z | 47.68 | 53.77 | 63.43 | a | 75.20 | a | 70.57 | a | 59.82 | 50.13 | 41.00 | 26.97 | 49.75 | a | |||||||
1963 | 19.69 | 35.81 | a | 36.18 | a | 39.66 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.84 | 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 | 48.44 | u | 58.27 | 65.05 | 71.68 | a | 70.95 | 64.45 | a | 50.12 | a | 41.98 | 28.53 | a | 56.38 | d | ||||
1967 | 24.18 | 31.62 | 39.02 | b | 42.68 | 52.17 | a | 58.52 | 71.27 | 71.20 | a | 63.20 | 52.73 | 40.15 | 20.69 | 47.29 | ||||||||||
1968 | 23.66 | 32.38 | 37.30 | a | 38.62 | 51.90 | 65.72 | 70.32 | 62.79 | 58.23 | 51.27 | 36.76 | a | 21.67 | a | 45.89 | ||||||||||
1969 | 25.18 | a | 26.46 | 30.35 | 44.27 | 59.29 | 62.75 | 70.92 | 74.69 | 61.22 | 44.60 | 35.85 | 31.11 | 47.22 | ||||||||||||
1970 | 27.55 | 39.21 | 34.66 | 34.70 | 52.92 | a | 57.67 | 72.69 | 70.95 | 58.30 | 40.19 | 34.45 | 26.65 | 45.83 | ||||||||||||
1971 | 28.19 | b | 34.05 | 33.44 | 49.05 | 47.14 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.55 | i | 26.60 | 36.41 | f | ||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | 57.47 | m | 64.59 | g | 69.32 | n | 67.11 | l | 56.15 | j | 46.52 | j | 33.17 | x | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.85 | m | 66.71 | n | 67.20 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | 39.00 | t | 40.50 | i | 54.70 | k | 67.72 | l | 68.44 | o | 66.44 | f | 58.42 | e | 50.55 | a | 34.65 | d | 22.87 | e | 41.62 | h |
1975 | 20.95 | a | 24.21 | 31.19 | 35.79 | a | 46.39 | 56.48 | 69.16 | 65.50 | 59.35 | 45.68 | c | 32.58 | 26.11 | 42.78 | ||||||||||
1976 | 22.72 | b | 31.07 | a | 30.87 | 42.00 | 53.73 | 59.57 | h | 67.95 | l | 66.42 | 60.35 | c | 46.21 | 37.92 | 27.40 | a | 41.87 | b | ||||||
1977 | 22.87 | 32.27 | b | 30.44 | 47.22 | 49.58 | a | 67.34 | e | 68.94 | 68.13 | 59.34 | a | 49.05 | b | 35.20 | 28.97 | 46.61 | ||||||||
1978 | 25.10 | 25.52 | 37.24 | 42.54 | c | 48.55 | 61.10 | 68.39 | 65.90 | 57.40 | 51.58 | 34.85 | 17.94 | 44.67 | ||||||||||||
1979 | 13.41 | d | 21.59 | f | 30.74 | 41.82 | 51.69 | 62.17 | 69.02 | b | 64.40 | 58.40 | 46.31 | 26.59 | a | 25.91 | b | 44.59 | a | |||||||
1980 | 23.90 | b | 28.20 | a | 28.84 | 40.90 | 47.48 | 61.09 | a | 68.92 | 65.26 | 58.25 | 47.06 | 36.82 | b | 35.39 | 45.18 | |||||||||
1981 | 32.82 | 30.39 | 33.76 | 45.88 | 49.12 | c | 64.45 | 69.27 | 66.73 | 59.90 | 43.60 | 37.47 | 26.71 | 46.68 | ||||||||||||
1982 | 19.95 | 24.34 | 32.93 | d | 39.09 | a | 49.73 | 59.14 | b | 67.68 | 67.27 | 57.05 | 41.28 | a | 30.12 | 23.40 | 42.66 | |||||||||
1983 | 26.40 | 28.48 | a | 34.31 | b | 36.15 | c | 47.64 | b | 58.96 | b | 65.29 | c | 68.22 | b | 60.91 | a | 48.34 | b | 32.60 | a | 21.78 | b | 44.09 | ||
1984 | 21.53 | 24.11 | a | 31.97 | b | 38.58 | 54.55 | a | 57.55 | a | 66.72 | a | 66.19 | 56.32 | 39.24 | b | 32.60 | 23.20 | a | 42.71 | ||||||
1985 | 23.15 | a | 21.70 | a | 32.27 | 45.79 | a | 52.87 | 62.86 | a | 69.30 | a | 67.13 | 53.28 | a | 46.15 | h | 30.31 | a | 26.56 | 44.11 | a | ||||
1986 | 28.90 | a | 30.75 | 38.34 | 40.40 | a | 49.97 | 64.19 | a | 65.98 | 68.65 | 54.12 | a | 44.63 | 33.63 | 27.32 | 45.57 | |||||||||
1987 | 21.81 | 28.73 | 31.55 | 46.33 | a | 52.47 | 64.06 | c | 65.90 | 64.47 | 59.48 | a | 51.27 | 33.90 | a | 23.25 | a | 45.27 | ||||||||
1988 | 19.47 | a | 28.34 | a | 31.58 | 43.52 | a | 51.44 | 65.35 | 71.09 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.40 | e | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.24 | 29.93 | 34.49 | 42.78 | 53.08 | 63.14 | 70.31 | 68.05 | 59.35 | 48.23 | 35.73 | 26.32 | 46.12 | |||||||||||||
S.D. | 4.13 | 4.17 | 3.41 | 3.82 | 3.59 | 3.16 | 2.35 | 2.48 | 2.81 | 3.97 | 3.40 | 3.89 | 1.93 | |||||||||||||
SKEW | -0.08 | -0.09 | 0.33 | -0.24 | 0.01 | -0.42 | -0.35 | 0.30 | -0.12 | -0.55 | -0.36 | 0.29 | -0.28 | |||||||||||||
MAX | 32.82 | 39.21 | 41.16 | 49.17 | 59.87 | 68.18 | 75.20 | 74.69 | 64.98 | 55.23 | 41.98 | 35.39 | 49.19 | |||||||||||||
MIN | 13.41 | 21.70 | 28.84 | 34.70 | 46.39 | 56.48 | 65.29 | 62.79 | 53.28 | 39.24 | 26.59 | 17.94 | 42.66 | |||||||||||||
YRS | 33 | 31 | 31 | 33 | 35 | 31 | 32 | 32 | 33 | 31 | 33 | 33 | 22 |