YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.03 | 61.35 | 55.78 | 44.50 | 37.95 | 32.27 | 48.98 | f | ||||||
1905 | 27.47 | 28.29 | ----- | z | 39.90 | 50.19 | 59.95 | a | 59.90 | 62.50 | 56.37 | 46.79 | 35.25 | 25.10 | 44.70 | a | ||||||||||
1906 | 30.90 | 30.62 | 30.97 | l | 43.32 | 51.93 | a | 53.10 | y | 65.24 | f | 57.84 | 52.28 | 41.81 | b | 31.57 | a | 37.08 | 41.93 | c | ||||||
1907 | 33.26 | 39.64 | 42.94 | 45.16 | h | 45.42 | 56.63 | 62.34 | 61.15 | 55.97 | 46.97 | 34.00 | a | 32.47 | 46.43 | a | ||||||||||
1908 | 28.82 | 33.89 | f | 40.65 | 44.02 | 49.13 | 58.23 | 61.35 | a | 61.66 | 55.37 | 43.56 | 33.50 | 31.00 | 46.12 | a | ||||||||||
1909 | 35.21 | 28.95 | 33.82 | 40.70 | 46.42 | 58.87 | 64.35 | 60.87 | 56.97 | m | 46.89 | 39.85 | 22.24 | 43.47 | a | |||||||||||
1910 | 30.10 | e | 26.84 | 43.02 | 46.23 | 54.19 | 63.18 | 65.19 | 62.10 | u | 58.72 | 49.89 | 50.42 | 30.71 | 47.14 | a | ||||||||||
1911 | 33.30 | i | 27.84 | 39.05 | 44.87 | 51.98 | 59.58 | 60.55 | 63.13 | 59.78 | 42.39 | 32.47 | 21.77 | 45.76 | a | |||||||||||
1912 | 27.87 | 22.90 | 28.56 | 41.35 | 52.81 | 56.93 | 62.35 | 63.34 | 52.67 | 47.06 | 34.43 | 25.00 | 42.94 | |||||||||||||
1913 | 24.61 | 25.98 | 30.74 | 42.87 | 51.63 | 58.03 | 63.87 | 64.13 | 54.80 | 43.26 | 41.12 | 21.05 | a | 43.51 | ||||||||||||
1914 | 33.73 | c | 30.09 | 35.95 | 43.65 | 52.10 | 61.82 | 62.05 | 62.36 | c | 58.23 | 45.73 | 42.94 | l | 21.63 | d | 46.12 | a | ||||||||
1915 | 24.75 | a | 29.86 | 29.47 | 44.10 | 48.68 | 58.35 | 62.40 | 60.00 | 55.50 | 47.88 | n | 36.47 | 31.70 | i | 44.96 | b | |||||||||
1916 | 28.55 | b | 34.90 | e | 39.36 | b | 45.02 | g | 51.32 | a | 59.67 | 62.39 | i | 61.06 | 55.67 | 45.96 | f | 29.12 | m | 23.80 | d | 44.29 | d | |||
1917 | 25.58 | 29.32 | c | 30.13 | 39.86 | b | 44.53 | 58.35 | 65.02 | a | 61.94 | e | 56.43 | 45.67 | a | 38.65 | 35.23 | a | 44.23 | |||||||
1918 | 22.24 | b | 28.29 | k | ----- | z | 39.85 | q | 49.11 | v | 62.32 | 62.78 | a | 60.97 | a | 53.93 | a | 45.84 | b | 31.13 | k | 19.05 | l | 51.35 | f | |
1919 | 25.84 | 22.63 | a | 32.02 | b | 42.80 | j | ----- | z | ----- | z | ----- | z | 60.98 | ----- | z | 46.87 | 30.17 | 26.52 | 35.00 | e | |||||
1920 | 24.39 | 30.47 | ----- | z | ----- | z | ----- | z | ----- | z | 63.84 | 64.42 | ----- | z | ----- | z | ----- | z | ----- | z | 45.78 | h | ||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | 44.32 | 54.06 | 60.35 | 67.52 | 61.79 | 57.27 | 48.23 | 43.15 | 32.74 | 52.16 | c | |||||||||
1967 | 32.48 | 31.93 | 42.55 | 45.40 | 51.03 | 59.47 | 64.92 | 60.52 | 55.65 | 50.11 | 39.95 | 26.92 | a | 46.74 | ||||||||||||
1968 | 31.02 | 34.05 | 35.31 | 40.41 | a | 50.87 | a | 61.75 | 63.05 | 61.29 | 56.07 | 50.94 | 35.33 | 32.73 | 46.07 | |||||||||||
1969 | 37.35 | 32.00 | 29.68 | 45.32 | 52.58 | 57.17 | 65.13 | 65.18 | 57.42 | 44.16 | 37.05 | 31.31 | 46.19 | |||||||||||||
1970 | 30.02 | 35.11 | 32.32 | 40.88 | 52.84 | 58.88 | 65.23 | 64.27 | 56.22 | 43.97 | 38.25 | 35.63 | 46.13 | |||||||||||||
1971 | 33.65 | 31.41 | 38.34 | 42.25 | 49.81 | 60.90 | 63.56 | 60.94 | 55.53 | 46.98 | 38.57 | 31.92 | 46.15 | |||||||||||||
1972 | 34.45 | 37.43 | 42.68 | 46.95 | 50.63 | 61.57 | 63.58 | 61.97 | 58.63 | 49.40 | 29.80 | 31.97 | 47.42 | |||||||||||||
1973 | 28.52 | b | 32.45 | 34.90 | 37.50 | 51.18 | 60.03 | 63.60 | 63.42 | 57.05 | 50.34 | 42.70 | 32.95 | 46.22 | ||||||||||||
1974 | 30.66 | 33.00 | 44.17 | j | 42.78 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.48 | i | |||
1975 | ----- | z | ----- | z | 35.26 | n | 41.45 | a | 50.34 | 59.43 | a | 62.76 | b | 63.42 | 55.35 | 49.25 | c | 36.35 | 32.92 | r | 52.29 | d | ||||
1976 | 29.84 | 36.88 | 36.58 | 44.36 | a | 50.32 | 60.65 | 64.66 | 62.62 | a | 57.07 | 44.47 | 34.82 | 32.19 | 46.20 | |||||||||||
1977 | 26.92 | 33.25 | 35.37 | 43.18 | 52.65 | 61.32 | 63.82 | 64.13 | 59.22 | 50.29 | g | 39.97 | 36.45 | a | 46.93 | a | ||||||||||
1978 | 30.26 | 31.16 | 39.18 | 46.88 | 50.46 | g | 64.54 | f | 66.12 | c | 63.50 | d | 58.50 | a | 48.16 | l | 37.65 | c | 27.88 | a | 44.57 | c | ||||
1979 | 23.55 | a | 31.29 | 36.74 | 43.97 | 50.94 | 60.03 | 66.00 | 62.42 | 59.28 | ----- | z | ----- | z | ----- | z | 48.25 | c | ||||||||
1980 | ----- | z | ----- | z | 35.00 | a | 40.45 | a | 49.02 | a | 63.22 | a | 67.54 | h | 62.91 | d | 58.58 | l | 46.22 | a | 46.54 | r | 37.89 | m | 49.47 | f |
1981 | ----- | z | 35.29 | b | 34.69 | b | 47.48 | d | 49.84 | c | 64.02 | 64.11 | 60.55 | 56.25 | 48.60 | 41.48 | a | ----- | z | 50.23 | b | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.33 | 31.24 | 35.96 | 43.13 | 50.61 | 60.03 | 63.65 | 62.15 | 56.46 | 46.53 | 37.34 | 29.54 | 45.62 | |||||||||||||
S.D. | 3.86 | 4.05 | 4.48 | 2.49 | 2.34 | 1.95 | 1.72 | 1.56 | 1.86 | 2.56 | 4.50 | 4.95 | 1.41 | |||||||||||||
SKEW | 0.09 | -0.19 | 0.05 | -0.17 | -0.97 | 0.21 | -0.05 | -0.31 | -0.22 | -0.01 | 0.67 | -0.36 | -0.86 | |||||||||||||
MAX | 37.35 | 39.64 | 43.02 | 47.48 | 54.19 | 64.02 | 67.52 | 65.18 | 59.78 | 50.94 | 50.42 | 37.08 | 47.42 | |||||||||||||
MIN | 22.24 | 22.63 | 28.56 | 37.50 | 44.53 | 56.63 | 59.90 | 57.84 | 52.28 | 41.81 | 29.80 | 21.05 | 42.94 | |||||||||||||
YRS | 27 | 27 | 25 | 27 | 27 | 27 | 28 | 31 | 28 | 26 | 26 | 25 | 11 |