YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 18.81 | j | 15.93 | 25.45 | 31.72 | a | 38.81 | 45.14 | a | 47.94 | 48.21 | b | 41.17 | a | 34.52 | 29.67 | 26.16 | 34.97 | a | |||||||
1914 | 27.90 | 25.32 | 28.74 | 34.37 | 38.97 | 43.60 | 49.42 | 48.37 | a | 42.33 | 38.45 | 32.86 | a | 17.06 | 35.62 | |||||||||||
1915 | 17.61 | 26.64 | 30.16 | 34.50 | 40.03 | 46.14 | a | 49.81 | 50.65 | 42.00 | 37.42 | 28.60 | 24.52 | 35.67 | ||||||||||||
1916 | 8.35 | 18.67 | b | 28.03 | a | 31.53 | 35.32 | 41.23 | 47.10 | 47.74 | 40.97 | 32.61 | 24.60 | 21.10 | 31.44 | |||||||||||
1917 | 21.45 | 24.11 | 23.48 | 30.83 | 36.90 | 39.73 | 47.42 | 47.06 | 44.52 | i | 37.17 | b | 33.83 | a | 32.62 | e | 34.06 | a | ||||||||
1918 | 28.71 | 15.71 | 20.06 | 29.13 | 37.55 | 45.50 | 47.77 | 48.87 | 42.80 | 39.23 | a | 30.60 | 24.10 | 34.17 | ||||||||||||
1919 | 21.29 | j | 23.36 | 27.90 | 31.90 | 36.77 | 40.30 | 47.71 | 50.06 | 41.43 | 33.42 | 29.21 | a | 21.81 | j | 36.21 | b | |||||||||
1920 | 22.23 | 19.79 | a | 29.50 | a | 30.53 | 35.17 | a | 43.76 | a | 50.74 | 51.07 | a | 41.47 | 37.00 | 29.13 | 27.68 | 34.84 | ||||||||
1921 | 22.77 | 26.86 | 29.16 | 31.90 | 36.77 | 45.63 | 46.81 | d | 49.87 | 40.10 | 35.23 | 29.76 | a | 23.25 | c | 34.84 | ||||||||||
1922 | 12.13 | a | 14.68 | 23.43 | a | 30.70 | 35.27 | a | 45.79 | a | 50.65 | h | 50.93 | b | 42.97 | a | 36.72 | b | 27.07 | a | 18.00 | 30.70 | a | |||
1923 | 23.33 | d | 15.67 | a | 26.16 | 32.41 | a | 37.00 | 43.33 | 50.43 | a | 49.10 | 41.17 | a | 34.74 | 31.85 | d | 26.31 | b | 34.29 | ||||||
1924 | 18.20 | a | 28.39 | a | 28.52 | d | 31.00 | a | 38.57 | c | 44.03 | 49.32 | l | 49.13 | ----- | z | 35.32 | 27.97 | a | 16.14 | c | 31.73 | b | |||
1925 | 25.42 | 28.21 | 28.73 | a | 33.36 | b | 39.71 | 45.43 | 50.63 | a | 46.90 | b | 42.23 | 32.56 | f | 27.80 | 30.80 | a | 36.29 | a | ||||||
1926 | 25.06 | 29.11 | 29.73 | a | 34.33 | 38.55 | 46.30 | 50.67 | a | 48.16 | 36.60 | 35.45 | 30.70 | c | 20.27 | a | 35.41 | |||||||||
1927 | 19.52 | 22.36 | 24.52 | 29.57 | 36.97 | 46.43 | 50.45 | 48.90 | 42.63 | 36.26 | 32.46 | d | 18.69 | b | 34.06 | |||||||||||
1928 | 20.10 | b | 20.52 | 27.71 | 31.67 | 39.81 | 47.23 | 51.71 | 48.10 | 41.10 | 35.57 | a | 29.68 | b | 19.43 | c | 34.38 | |||||||||
1929 | 9.83 | a | 11.77 | b | 29.55 | 29.77 | 36.43 | a | 44.17 | a | 48.33 | a | 50.37 | a | 41.14 | a | 32.94 | 24.90 | 27.16 | 32.20 | ||||||
1930 | 4.13 | 24.25 | 27.19 | 32.83 | 37.55 | 42.79 | a | 49.94 | 48.61 | 43.53 | 32.32 | 27.14 | a | 23.74 | 32.84 | |||||||||||
1931 | 24.73 | a | 23.19 | a | 27.58 | 31.67 | 39.52 | 45.50 | 48.29 | 45.55 | 42.07 | 32.57 | a | 24.43 | 20.32 | 33.78 | ||||||||||
1932 | 18.77 | a | 18.18 | a | 27.68 | 31.38 | a | 36.81 | 45.30 | 46.97 | 47.57 | a | 37.63 | 33.96 | e | 32.52 | e | 22.19 | e | 33.25 | ||||||
1933 | 21.92 | e | 17.11 | 25.90 | a | 30.07 | 36.47 | a | 43.28 | a | 49.97 | b | 48.83 | a | 41.17 | a | 34.70 | a | 32.00 | 28.77 | 34.18 | |||||
1934 | 28.17 | b | 27.11 | 31.45 | 39.37 | 42.87 | a | 49.17 | 52.55 | 52.26 | 43.63 | 37.39 | 34.00 | 27.03 | 38.75 | |||||||||||
1935 | 19.87 | a | 21.50 | 25.93 | a | 30.40 | 38.71 | 46.43 | 52.35 | 49.58 | 44.33 | 33.81 | 25.43 | 25.07 | a | 34.45 | ||||||||||
1936 | 22.45 | 5.72 | 26.65 | 33.13 | 42.35 | 47.50 | 52.52 | 52.26 | 42.23 | 36.55 | 23.87 | 27.71 | 34.41 | |||||||||||||
1937 | 1.47 | a | 16.68 | 28.74 | 33.80 | 38.39 | 47.37 | 53.97 | 50.10 | 45.81 | c | 37.06 | 32.60 | 27.06 | 34.42 | |||||||||||
1938 | 22.74 | 23.89 | a | 28.00 | 34.30 | 41.26 | 49.57 | 55.16 | 50.14 | c | 46.27 | 34.81 | 24.53 | 24.90 | 36.30 | |||||||||||
1939 | 28.29 | 21.82 | 26.61 | 33.80 | 40.87 | 46.53 | 52.61 | 50.55 | 44.40 | 38.55 | 29.10 | a | 28.71 | 36.82 | ||||||||||||
1940 | 23.26 | 27.48 | 31.32 | 35.87 | 42.81 | 49.60 | 55.13 | 52.00 | a | 47.69 | a | 39.48 | 24.80 | 24.48 | 37.83 | |||||||||||
1941 | 24.61 | 23.21 | 29.45 | 35.63 | 42.29 | 48.50 | 56.48 | 51.97 | 43.37 | 36.71 | 30.52 | a | 26.32 | 37.42 | ||||||||||||
1942 | 15.35 | 24.39 | 27.19 | 34.93 | 40.32 | 45.70 | 54.00 | 52.29 | 43.73 | 35.03 | 28.07 | 24.03 | 35.42 | |||||||||||||
1943 | 11.32 | 24.07 | a | 23.45 | 34.03 | a | 39.55 | 45.87 | 53.97 | 49.74 | 41.87 | 35.35 | 29.30 | 21.39 | 34.16 | |||||||||||
1944 | 16.68 | 23.17 | 25.43 | a | 32.87 | 39.81 | 46.83 | 53.65 | 50.45 | 43.53 | 35.39 | 27.83 | 19.39 | 34.59 | ||||||||||||
1945 | 26.55 | 26.75 | 27.90 | 33.20 | 40.84 | 46.70 | 52.74 | 50.77 | 40.67 | 36.87 | 27.47 | 22.71 | 36.10 | |||||||||||||
1946 | 23.71 | 23.11 | 28.90 | 31.97 | 40.61 | 45.20 | 52.48 | 50.00 | 42.30 | 33.81 | 25.03 | 23.63 | a | 35.06 | ||||||||||||
1947 | 18.65 | 22.00 | 28.55 | 34.48 | a | 43.77 | 47.80 | 51.48 | 50.10 | 44.13 | 38.19 | 31.13 | 27.00 | 36.44 | ||||||||||||
1948 | 18.74 | 18.34 | 25.00 | b | 31.10 | 39.32 | 50.03 | 49.39 | 49.90 | 40.73 | 31.00 | 29.17 | 17.71 | 33.37 | ||||||||||||
1949 | -0.68 | 17.32 | 27.65 | 32.00 | 42.35 | 45.53 | 50.90 | 50.81 | 43.60 | 32.97 | 31.37 | 22.71 | 33.04 | |||||||||||||
1950 | -0.06 | 18.46 | 24.13 | 29.37 | 37.39 | 45.93 | 52.52 | 52.06 | 42.43 | 35.94 | 28.27 | 28.61 | 32.92 | |||||||||||||
1951 | 20.19 | 20.11 | 23.16 | 30.03 | 40.06 | 49.30 | 52.81 | 52.58 | 42.07 | 36.61 | 26.80 | 19.87 | 34.47 | |||||||||||||
1952 | 12.45 | 20.18 | a | 25.90 | 30.70 | 34.48 | 45.60 | 50.61 | 49.26 | 42.67 | 33.81 | 23.10 | 25.23 | 32.83 | ||||||||||||
1953 | 28.33 | a | 25.93 | 27.94 | 31.12 | d | 37.39 | 43.90 | 50.81 | 48.89 | d | 41.46 | f | 34.94 | 30.03 | 28.39 | 35.24 | a | ||||||||
1954 | 18.06 | 24.23 | b | 21.45 | 32.33 | 38.00 | 42.90 | 49.35 | 49.93 | a | 43.63 | 32.94 | 33.20 | 22.47 | a | 34.04 | ||||||||||
1955 | 24.87 | 21.39 | 21.68 | 29.27 | 36.68 | 45.93 | a | 49.35 | 47.84 | 41.90 | 34.10 | 20.76 | a | 17.32 | 32.59 | |||||||||||
1956 | 18.74 | 13.62 | 22.42 | 30.77 | 40.00 | 45.10 | 51.48 | 49.65 | 39.20 | 32.87 | 25.43 | 23.76 | b | 32.75 | ||||||||||||
1957 | 7.23 | a | 18.32 | c | 25.94 | 33.31 | a | 43.03 | 47.57 | 45.53 | a | 47.45 | 42.77 | 32.73 | a | 24.00 | d | 26.48 | 32.86 | |||||||
1958 | 24.66 | b | 30.54 | 25.94 | 31.86 | a | 43.68 | 51.87 | 53.48 | 53.13 | 42.00 | 33.55 | 24.23 | 25.29 | 36.68 | |||||||||||
1959 | 21.71 | 22.62 | d | 27.35 | 33.67 | 37.32 | 43.40 | 50.55 | 50.06 | 41.03 | 35.60 | a | 23.34 | a | 24.23 | a | 34.24 | |||||||||
1960 | 16.87 | 24.34 | 22.61 | 31.79 | b | 37.42 | 46.13 | 52.39 | 48.19 | 40.03 | 34.84 | 27.37 | 19.61 | 33.47 | ||||||||||||
1961 | 21.71 | 29.21 | d | 28.55 | 34.00 | 38.84 | 47.59 | a | 50.84 | 52.36 | f | 37.38 | i | 31.52 | 19.80 | 21.39 | c | 32.34 | b | |||||||
1962 | 16.55 | 23.54 | 24.32 | 32.50 | 38.00 | 45.23 | 49.71 | 48.93 | d | 39.15 | j | 34.71 | 30.77 | 27.10 | a | 33.76 | a | |||||||||
1963 | 17.03 | 26.78 | a | 28.23 | 32.67 | 38.10 | 47.20 | 50.26 | 49.40 | a | 44.60 | 35.81 | 29.43 | 21.55 | 35.09 | |||||||||||
1964 | 24.68 | 22.61 | a | 26.04 | c | 31.33 | 36.74 | 45.10 | 48.90 | 46.35 | 39.37 | 32.13 | 28.59 | a | 17.35 | 33.27 | ||||||||||
1965 | 24.61 | 26.04 | 24.10 | 32.43 | 38.21 | g | 45.68 | b | 50.52 | 50.97 | 39.37 | 34.16 | 33.13 | 22.29 | 34.84 | a | ||||||||||
1966 | 20.13 | 24.64 | 24.74 | 32.70 | 39.20 | a | 44.93 | 49.81 | 49.68 | 44.97 | a | 30.90 | 30.10 | a | 29.13 | 35.08 | ||||||||||
1967 | 28.87 | 27.33 | a | 27.68 | 30.33 | 39.84 | 50.23 | 53.97 | 53.07 | a | 45.63 | 36.10 | 27.73 | 22.00 | 36.90 | |||||||||||
1968 | 22.81 | 23.83 | 31.13 | 32.47 | 39.32 | 47.53 | 51.65 | 49.61 | 43.03 | 32.74 | 29.47 | 18.00 | a | 35.13 | ||||||||||||
1969 | 10.13 | 18.07 | 23.16 | 31.60 | 40.77 | 50.87 | 50.55 | 46.58 | 44.40 | 31.42 | 30.07 | 25.35 | 33.58 | |||||||||||||
1970 | 19.33 | a | 26.08 | b | 27.45 | 30.90 | 38.00 | 48.14 | a | 52.90 | 49.35 | 38.30 | 31.61 | 27.03 | a | 19.80 | a | 34.08 | ||||||||
1971 | 22.84 | 25.32 | 23.57 | a | 30.87 | 39.48 | 45.17 | 52.45 | 54.13 | 40.43 | 33.43 | a | 30.59 | a | ----- | z | 36.21 | a | ||||||||
1972 | 18.75 | c | 19.85 | b | 27.68 | 31.18 | b | 40.55 | 48.33 | 49.81 | 49.87 | a | 38.37 | 29.31 | b | ----- | z | 15.46 | e | 33.56 | a | |||||
1973 | 16.42 | 23.61 | 29.77 | 33.03 | a | 39.39 | ----- | z | 52.00 | a | 50.13 | 43.20 | 35.39 | 27.37 | 28.71 | 34.46 | a | |||||||||
1974 | 19.04 | g | 28.00 | 27.43 | a | 33.72 | a | 38.00 | 46.67 | 50.26 | 51.30 | a | 42.07 | a | 30.90 | a | 31.87 | 28.94 | 37.20 | a | ||||||
1975 | 22.00 | 21.46 | 26.19 | 29.50 | 38.16 | 46.67 | 53.58 | 49.07 | a | 39.80 | ----- | z | 27.30 | 24.71 | 34.40 | a | ||||||||||
1976 | 23.13 | 22.90 | 24.45 | 31.67 | 37.68 | 43.40 | 50.71 | 50.39 | 42.90 | 32.19 | 27.08 | d | 25.50 | a | 34.33 | |||||||||||
1977 | 17.48 | 27.14 | 30.13 | a | 34.33 | 38.03 | 49.00 | 50.32 | 53.43 | c | ----- | z | ----- | z | ----- | z | ----- | z | 37.48 | d | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.24 | 22.35 | 26.69 | 32.24 | 38.92 | 46.07 | 50.93 | 49.82 | 42.15 | 34.66 | 28.38 | 23.66 | 34.57 | |||||||||||||
S.D. | 6.95 | 4.67 | 2.57 | 1.86 | 2.14 | 2.38 | 2.25 | 1.79 | 2.12 | 2.24 | 3.19 | 3.96 | 1.52 | |||||||||||||
SKEW | -1.14 | -0.89 | -0.39 | 0.88 | 0.36 | -0.11 | -0.01 | 0.11 | -0.11 | 0.00 | -0.42 | -0.13 | 0.56 | |||||||||||||
MAX | 28.87 | 30.54 | 31.45 | 39.37 | 43.77 | 51.87 | 56.48 | 54.13 | 47.69 | 39.48 | 34.00 | 32.62 | 38.75 | |||||||||||||
MIN | -0.68 | 5.72 | 20.06 | 29.13 | 34.48 | 39.73 | 45.53 | 45.55 | 36.60 | 29.31 | 19.80 | 15.46 | 31.44 | |||||||||||||
YRS | 62 | 65 | 65 | 65 | 64 | 64 | 63 | 64 | 59 | 62 | 63 | 62 | 49 |