YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 23.59 | b | 22.38 | 32.15 | 41.64 | b | 51.40 | 53.92 | f | 60.82 | a | 59.73 | 55.22 | a | 44.02 | 35.93 | 17.61 | 40.41 | a | |||||||
1915 | 18.82 | a | 26.21 | 29.69 | 44.08 | 45.81 | 53.67 | 60.97 | 59.03 | a | 52.97 | a | 44.16 | 30.44 | c | 22.90 | 40.73 | |||||||||
1916 | 21.87 | 26.91 | 33.82 | 39.90 | a | 45.98 | e | 55.74 | a | 61.85 | 57.93 | c | 52.50 | b | 43.10 | 28.13 | 17.65 | 40.45 | ||||||||
1917 | 15.65 | a | 22.78 | a | 22.47 | 34.43 | 42.16 | 54.78 | 62.95 | ----- | z | 53.00 | o | 41.93 | d | 36.90 | 28.58 | 36.26 | b | |||||||
1918 | 17.60 | 23.57 | 33.58 | 35.93 | 47.67 | a | 60.32 | 60.66 | 59.84 | 51.77 | b | 44.42 | 26.12 | 19.50 | 40.08 | |||||||||||
1919 | 17.21 | 18.88 | 28.30 | a | 41.23 | 50.16 | b | 53.05 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.15 | g | |||
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 | 58.86 | i | 65.66 | 64.08 | 53.02 | a | 47.37 | 33.26 | a | 23.65 | 47.84 | f | ||||
1935 | 25.26 | 25.95 | 30.18 | 38.67 | 45.00 | 56.78 | 62.79 | 62.26 | 54.33 | 43.76 | 32.30 | 23.69 | 41.75 | |||||||||||||
1936 | 20.50 | a | 23.59 | a | 31.27 | 41.48 | 52.48 | 59.98 | 64.56 | 61.63 | 53.73 | 43.94 | e | 30.23 | 24.21 | 42.30 | ||||||||||
1937 | 13.13 | 20.44 | a | 29.53 | a | 38.37 | 51.00 | 56.10 | 61.76 | 62.23 | 55.73 | 45.31 | 33.30 | 25.71 | 41.05 | |||||||||||
1938 | 22.73 | 25.80 | 31.41 | b | 40.03 | 45.74 | 56.42 | 60.15 | 61.63 | 54.48 | 45.84 | 25.63 | 21.11 | 40.91 | ||||||||||||
1939 | 18.93 | a | 11.64 | 28.69 | 40.87 | 49.38 | a | 53.00 | 63.10 | 60.07 | a | 53.77 | 42.37 | 34.63 | 27.85 | 40.36 | ||||||||||
1940 | 19.08 | 24.29 | 32.27 | 40.98 | c | 50.63 | 58.38 | 64.35 | 60.98 | 54.77 | 41.14 | c | 23.86 | a | 24.68 | a | 41.29 | |||||||||
1941 | 18.85 | 25.48 | 28.35 | 36.05 | 49.39 | 52.82 | 59.66 | 59.44 | 51.98 | 43.03 | 31.02 | 22.48 | 39.88 | |||||||||||||
1942 | 16.44 | 15.02 | 22.94 | 41.06 | f | 50.39 | h | 56.83 | 62.29 | 62.02 | 54.18 | b | 45.04 | c | 27.79 | r | 24.18 | i | 41.84 | d | ||||||
1943 | 18.25 | a | 20.89 | 23.77 | 42.52 | 46.43 | a | 56.32 | 62.53 | 59.66 | 53.98 | h | 43.26 | 31.40 | 22.47 | a | 38.86 | a | ||||||||
1944 | 17.58 | 22.02 | 25.76 | 34.48 | 46.38 | a | 54.77 | 61.47 | 60.98 | 56.15 | 45.23 | 32.02 | a | 20.65 | 39.79 | |||||||||||
1945 | 21.89 | 25.29 | 27.63 | 32.03 | 47.94 | 51.95 | a | 60.65 | 59.63 | 52.13 | 44.40 | 30.90 | a | 20.10 | 39.54 | |||||||||||
1946 | 17.92 | 23.12 | 32.69 | b | 44.57 | a | 44.87 | a | 56.45 | 62.24 | 60.26 | 53.42 | 42.11 | c | 29.62 | 26.83 | a | 41.17 | ||||||||
1947 | 16.29 | 24.64 | 28.39 | 37.81 | a | 48.18 | 51.07 | 60.47 | 60.69 | 55.25 | 46.69 | 24.72 | 21.33 | a | 39.63 | |||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.00 | 57.17 | 44.81 | 24.93 | a | 22.77 | 41.74 | g | ||||
1949 | 16.65 | a | 20.54 | 32.24 | 41.90 | 47.98 | a | 53.67 | 60.53 | 58.26 | 53.05 | 41.12 | g | 37.22 | 21.56 | 40.33 | a | |||||||||
1950 | 21.58 | g | 24.16 | 26.85 | 38.33 | 44.16 | 55.13 | 58.69 | b | 56.40 | a | 52.26 | a | 49.05 | a | 35.90 | 26.90 | 42.53 | a | |||||||
1951 | 19.39 | 23.86 | 28.81 | 37.67 | 48.21 | 51.50 | 61.89 | 58.57 | a | 52.42 | 41.42 | a | 27.59 | a | 19.42 | 39.23 | ||||||||||
1952 | 20.16 | b | 18.31 | b | 22.86 | b | 39.98 | a | 48.02 | 57.64 | b | 60.65 | 59.02 | a | 54.14 | b | 45.56 | 26.23 | 18.97 | b | 39.30 | |||||
1953 | 26.82 | 20.96 | 30.23 | 35.64 | b | 44.02 | 58.42 | 62.48 | 60.15 | 55.00 | 44.53 | 33.57 | 21.03 | 41.07 | ||||||||||||
1954 | 27.06 | 30.71 | 28.79 | 43.85 | 49.95 | 56.72 | 64.15 | 60.55 | 53.55 | a | 44.85 | 34.42 | 19.50 | 42.84 | ||||||||||||
1955 | 17.37 | 15.52 | 26.02 | 35.62 | 46.19 | 52.32 | 61.53 | 60.83 | a | 54.35 | 43.29 | b | 27.65 | d | 25.69 | 38.87 | ||||||||||
1956 | 26.69 | 17.91 | 28.40 | a | 38.78 | 50.60 | 58.70 | 60.03 | a | 57.03 | a | 56.00 | a | 45.71 | 23.74 | a | 19.37 | 40.25 | ||||||||
1957 | 18.33 | a | 29.05 | 29.95 | 35.90 | 44.30 | a | 53.33 | 60.19 | 59.92 | a | 51.60 | 44.03 | 26.25 | 22.84 | 39.64 | ||||||||||
1958 | 18.29 | 27.95 | 26.76 | 35.30 | 49.58 | a | 57.72 | 60.57 | a | 62.87 | 54.62 | 44.45 | 31.32 | 27.31 | 41.39 | |||||||||||
1959 | 23.15 | ----- | z | 31.94 | 39.50 | 48.17 | a | 59.47 | 61.47 | a | 60.19 | 51.17 | a | 40.61 | 31.38 | 25.97 | 43.00 | a | ||||||||
1960 | 20.32 | a | 18.03 | 31.27 | a | 41.58 | 48.02 | 57.32 | 63.05 | b | 62.23 | 56.08 | 43.89 | 32.35 | 23.32 | 41.45 | ||||||||||
1961 | 21.55 | 26.21 | 32.16 | 37.67 | 49.68 | a | 58.48 | 61.94 | 62.27 | 47.78 | a | 42.61 | 28.40 | 18.70 | a | 40.62 | ||||||||||
1962 | 16.75 | a | 28.46 | 26.37 | 42.88 | a | 46.92 | 55.43 | 60.05 | 59.37 | 52.90 | 45.77 | 35.07 | 25.58 | 41.30 | |||||||||||
1963 | 16.39 | 28.11 | 29.27 | 40.32 | 50.69 | 55.02 | 63.77 | 60.26 | 57.28 | 49.45 | 32.77 | 21.03 | 42.03 | |||||||||||||
1964 | 15.53 | 15.66 | 22.02 | 36.25 | 48.32 | 55.25 | 65.08 | 58.65 | 53.10 | 46.66 | 30.42 | 21.40 | 39.03 | |||||||||||||
1965 | 23.87 | 23.05 | 23.98 | a | 39.63 | 47.66 | 55.15 | 62.19 | 59.18 | 49.42 | 46.98 | 34.22 | 24.40 | 40.81 | ||||||||||||
1966 | 17.31 | ----- | z | 31.79 | 39.95 | 50.03 | a | 56.22 | a | 64.00 | 60.02 | 54.23 | 42.85 | a | 35.47 | a | 19.29 | 42.83 | a | |||||||
1967 | 21.66 | 23.86 | 35.92 | 40.55 | a | 45.89 | 53.80 | 62.90 | 60.39 | 53.98 | 45.05 | 33.28 | 19.18 | a | 41.37 | |||||||||||
1968 | 20.79 | 25.90 | 29.65 | 34.13 | 46.48 | 57.10 | 62.16 | 57.34 | 51.02 | 45.29 | 27.33 | 20.15 | 39.78 | |||||||||||||
1969 | 25.52 | 23.56 | a | 25.40 | 42.53 | 52.24 | b | 52.90 | 63.76 | 64.44 | 54.28 | 36.95 | a | 28.02 | 23.76 | 41.11 | ||||||||||
1970 | 20.76 | 27.93 | 27.44 | 32.93 | 48.74 | 56.31 | a | 62.63 | 62.81 | 50.98 | 37.94 | 31.83 | 22.90 | 40.27 | ||||||||||||
1971 | 22.10 | 22.50 | 28.40 | 39.87 | 46.31 | 57.88 | 63.35 | 62.65 | a | 50.63 | 42.82 | 29.67 | a | 18.34 | 40.38 | |||||||||||
1972 | 20.11 | 26.41 | 35.93 | a | ----- | z | 48.47 | 58.37 | 63.08 | 61.45 | a | 53.45 | 44.07 | b | 25.27 | 17.47 | 41.28 | a | ||||||||
1973 | 17.98 | 22.21 | 29.57 | a | 33.42 | 48.05 | 55.17 | 60.66 | 61.19 | 52.65 | 45.47 | a | 34.02 | 21.13 | 40.13 | |||||||||||
1974 | 16.95 | 21.50 | 34.87 | 37.35 | 51.60 | a | 58.72 | 62.19 | b | 59.31 | 52.93 | 46.31 | 29.95 | 17.68 | 40.78 | |||||||||||
1975 | 19.97 | 21.23 | 28.88 | a | 34.98 | 45.79 | 53.80 | 62.35 | d | 61.12 | a | 53.43 | 44.63 | 29.30 | 24.03 | a | 39.96 | |||||||||
1976 | 20.10 | 28.57 | a | 27.73 | 40.90 | 49.06 | 56.03 | a | 64.24 | 59.42 | 54.33 | d | 41.88 | a | 32.33 | 23.03 | 41.47 | |||||||||
1977 | 20.26 | b | 26.68 | 27.22 | b | 42.92 | 50.10 | 61.59 | a | 64.11 | 62.85 | a | 56.65 | g | 45.60 | b | 36.06 | c | 35.57 | q | 43.74 | b | ||||
1978 | 27.19 | r | 20.21 | n | ----- | z | ----- | z | ----- | z | 61.93 | i | 65.02 | 60.97 | 55.08 | 46.31 | b | 32.98 | a | 16.53 | 46.15 | f | ||||
1979 | 15.18 | 22.91 | a | 30.26 | h | 38.88 | b | 47.83 | b | 56.43 | a | 64.10 | ----- | z | 56.75 | 45.78 | a | 24.41 | a | ----- | z | 41.36 | c | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.76 | 23.21 | 29.03 | 38.81 | 47.99 | 55.98 | 62.23 | 60.42 | 53.56 | 44.23 | 30.67 | 22.09 | 40.59 | |||||||||||||
S.D. | 3.25 | 4.06 | 3.41 | 3.18 | 2.34 | 2.42 | 1.61 | 1.73 | 1.93 | 2.31 | 3.73 | 3.06 | 0.93 | |||||||||||||
SKEW | 0.53 | -0.67 | -0.12 | -0.24 | -0.19 | 0.01 | 0.07 | 0.06 | -0.46 | -0.69 | -0.21 | 0.21 | 0.20 | |||||||||||||
MAX | 27.06 | 30.71 | 35.93 | 44.57 | 52.48 | 61.59 | 65.66 | 64.44 | 57.28 | 49.45 | 37.22 | 28.58 | 42.84 | |||||||||||||
MIN | 13.13 | 11.64 | 22.02 | 32.03 | 42.16 | 51.07 | 58.69 | 56.40 | 47.78 | 36.95 | 23.74 | 16.53 | 38.87 | |||||||||||||
YRS | 48 | 47 | 48 | 47 | 48 | 47 | 50 | 49 | 48 | 50 | 50 | 48 | 37 |