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 | 25.36 | j | 26.21 | 33.55 | 43.37 | c | 49.94 | 56.86 | b | 63.21 | 64.89 | c | 55.19 | a | 43.81 | b | 36.65 | 30.45 | 45.83 | a | ||||||
1914 | 32.24 | 31.41 | 38.82 | 44.98 | 52.98 | a | 55.97 | 65.11 | 65.08 | a | 53.25 | 48.07 | b | 37.48 | a | 23.77 | 45.77 | |||||||||
1915 | 24.79 | 33.64 | 40.60 | 47.82 | 50.39 | 57.67 | a | 62.98 | 68.76 | 54.71 | a | 47.39 | 35.23 | 30.23 | a | 46.18 | ||||||||||
1916 | 12.50 | 24.50 | b | 35.80 | a | 42.63 | 45.53 | 52.95 | 56.73 | 58.98 | a | 53.50 | a | 46.66 | 32.28 | 27.10 | 40.76 | |||||||||
1917 | 28.44 | 31.16 | 30.94 | 39.27 | 47.29 | 52.07 | a | 61.47 | 63.37 | 56.33 | j | 48.93 | b | 40.80 | b | 38.19 | e | 43.81 | a | |||||||
1918 | 34.13 | 26.02 | 32.52 | 43.28 | 47.89 | 58.66 | a | 61.83 | a | 60.86 | b | 58.38 | i | 48.73 | a | 37.18 | 30.45 | 43.78 | a | |||||||
1919 | 26.12 | o | 31.45 | 36.39 | 44.43 | 49.27 | 54.05 | 61.94 | 65.67 | v | 56.25 | 44.18 | a | 35.31 | c | 28.88 | j | 45.92 | c | |||||||
1920 | 28.94 | 31.68 | a | 37.34 | b | 40.05 | 47.77 | a | 56.14 | a | 65.73 | a | 66.31 | b | 53.95 | 45.43 | a | 37.10 | 32.26 | 45.22 | ||||||
1921 | 29.52 | 34.02 | 38.44 | 42.22 | a | 50.86 | c | 58.63 | 62.15 | e | 64.74 | 52.43 | 48.87 | 37.00 | b | 29.31 | d | 45.68 | ||||||||
1922 | 22.86 | b | 25.34 | 32.57 | a | 41.10 | 48.57 | c | 58.57 | b | ----- | z | 66.00 | d | 58.70 | b | 49.64 | b | 33.79 | b | 25.47 | a | 42.05 | a | ||
1923 | 31.08 | e | 25.87 | a | 36.08 | 44.21 | a | 48.85 | 55.57 | 65.00 | a | 65.27 | 58.17 | a | 46.85 | 40.40 | d | 32.72 | d | 45.84 | ||||||
1924 | 25.20 | a | 36.27 | a | 37.85 | d | 42.91 | a | 54.11 | c | 57.57 | c | 58.83 | y | 63.08 | ----- | z | 45.77 | 34.52 | a | 25.27 | c | 42.26 | b | ||
1925 | 32.00 | 35.86 | 38.05 | a | 45.32 | b | 52.79 | 58.65 | 67.37 | a | 63.14 | b | 56.65 | 48.36 | f | 36.30 | b | 35.77 | a | 47.44 | a | |||||
1926 | 30.34 | 36.70 | 42.67 | a | 49.55 | 50.66 | 61.07 | 66.87 | a | 64.05 | 51.02 | 46.40 | 39.02 | c | 29.40 | a | 47.31 | |||||||||
1927 | 26.39 | 31.43 | 34.58 | 41.37 | 47.73 | 59.22 | 64.97 | 65.73 | 54.53 | 45.81 | 39.10 | j | 26.27 | c | 45.27 | a | ||||||||||
1928 | 26.72 | b | 31.36 | 37.44 | 42.58 | 54.90 | 57.65 | 66.19 | 63.56 | 58.23 | 46.93 | b | 37.34 | b | 27.11 | c | 45.84 | |||||||||
1929 | 19.95 | a | 23.17 | b | 38.32 | 40.30 | 49.73 | a | 55.53 | a | 63.05 | a | 66.90 | a | 57.05 | a | 48.71 | 38.12 | 34.69 | 44.63 | ||||||
1930 | 15.05 | 33.62 | 38.74 | 46.72 | a | 49.34 | 55.77 | b | 64.53 | 65.97 | 58.12 | 44.66 | 34.80 | b | 28.87 | 44.68 | ||||||||||
1931 | 30.81 | b | 31.57 | a | 36.79 | 44.80 | 54.06 | 57.67 | 65.19 | 63.94 | 55.35 | 46.26 | b | 32.90 | 26.61 | 45.50 | ||||||||||
1932 | 26.70 | c | 28.20 | a | 35.52 | a | 43.67 | a | 49.31 | b | 59.96 | c | 59.75 | a | 61.78 | a | 54.97 | a | 46.66 | i | 39.33 | g | 28.90 | j | 46.65 | c |
1933 | 28.37 | h | 25.31 | a | 34.55 | a | 43.00 | 47.07 | b | 55.76 | a | 64.27 | c | 64.95 | a | 52.37 | c | 47.62 | b | 40.98 | c | 34.33 | e | 46.38 | a | |
1934 | 34.89 | c | 37.23 | 43.13 | 51.75 | 54.57 | b | 59.93 | b | 64.23 | a | 66.15 | a | 55.14 | a | 47.20 | a | 39.53 | a | 32.18 | c | 48.83 | ||||
1935 | 28.35 | e | 31.27 | 33.61 | c | 41.65 | 50.41 | b | 56.75 | 64.22 | b | 62.78 | a | 59.46 | b | 46.53 | b | 32.80 | b | 29.29 | b | 44.76 | ||||
1936 | 29.65 | d | 16.02 | b | 34.53 | a | 44.88 | 54.12 | a | 59.05 | 64.24 | 64.85 | 56.92 | 50.79 | 33.97 | a | 33.59 | b | 45.22 | |||||||
1937 | 12.36 | c | 25.95 | 37.62 | a | 41.07 | a | 50.13 | 58.85 | 65.75 | a | 61.12 | a | 59.08 | d | 50.28 | a | 38.66 | b | 32.10 | a | 44.41 | ||||
1938 | 28.63 | d | 29.54 | c | 35.78 | a | 45.12 | 51.84 | 61.57 | c | 68.16 | 62.54 | e | 62.40 | 46.83 | b | 32.83 | a | 32.15 | d | 46.45 | |||||
1939 | 34.03 | 29.41 | a | 36.66 | 46.10 | 52.13 | a | 55.34 | b | 65.33 | a | 66.16 | 58.20 | 48.27 | a | 38.95 | a | 34.71 | c | 47.11 | ||||||
1940 | 28.88 | a | 33.95 | 41.35 | 45.03 | 54.79 | 61.35 | 65.77 | 64.85 | a | 61.19 | a | 48.94 | 31.72 | 31.00 | 47.40 | ||||||||||
1941 | 29.60 | 33.05 | 43.19 | 47.78 | a | 51.69 | 58.07 | 69.56 | 64.90 | 53.00 | 46.31 | 39.38 | a | 32.18 | a | 47.39 | ||||||||||
1942 | 22.26 | 31.80 | 37.05 | 46.37 | 49.87 | a | 54.73 | 67.34 | 67.32 | 60.22 | 48.79 | 33.05 | 30.73 | 45.79 | ||||||||||||
1943 | 19.26 | 31.33 | a | 33.16 | 44.64 | a | 48.03 | 55.52 | 65.74 | 62.19 | 59.55 | 47.42 | 36.13 | 29.02 | 44.33 | |||||||||||
1944 | 25.65 | 31.21 | 35.07 | a | 43.80 | 51.06 | 56.82 | 65.26 | 62.53 | 58.78 | 50.71 | 34.43 | 25.53 | 45.07 | ||||||||||||
1945 | 31.93 | a | 33.25 | 35.45 | 40.38 | 52.39 | 55.63 | 65.73 | 65.85 | 54.15 | 49.79 | 33.75 | 27.79 | 45.51 | ||||||||||||
1946 | 30.53 | 30.89 | 37.16 | 43.48 | 52.92 | 55.47 | 63.71 | 64.68 | 55.22 | 43.53 | a | 33.55 | 31.86 | c | 45.25 | |||||||||||
1947 | 26.85 | a | 32.39 | 40.26 | 45.66 | a | 56.42 | 56.57 | 63.27 | 62.00 | 57.93 | 46.58 | 37.55 | 33.03 | a | 46.54 | ||||||||||
1948 | 26.90 | a | 27.71 | a | 34.09 | c | 40.22 | a | 48.47 | 60.87 | 60.97 | 61.60 | 55.20 | 44.45 | 35.97 | 24.08 | 43.38 | |||||||||
1949 | 12.03 | 25.48 | 35.71 | 44.50 | 54.19 | 56.10 | 61.65 | 63.37 | 58.22 | 44.00 | 41.68 | 30.50 | 43.95 | |||||||||||||
1950 | 9.95 | 26.23 | 31.77 | 38.63 | 47.84 | 56.48 | 64.27 | 65.19 | 59.25 | 44.26 | 35.38 | 33.71 | 42.75 | |||||||||||||
1951 | 26.95 | 29.43 | 32.13 | 44.87 | 50.65 | 59.83 | 65.55 | 64.05 | 57.90 | 45.79 | 34.90 | 27.48 | 44.96 | |||||||||||||
1952 | 20.11 | 29.29 | a | 34.84 | 44.07 | 49.03 | 54.95 | 64.31 | 62.85 | 59.30 | 51.66 | 32.80 | 29.61 | 44.40 | ||||||||||||
1953 | 34.57 | a | 34.09 | 37.06 | 40.46 | d | 47.73 | 52.08 | 62.81 | 62.37 | d | 55.60 | f | 47.81 | 38.05 | 35.02 | 44.73 | a | ||||||||
1954 | 25.24 | 30.94 | b | 32.47 | 40.45 | 49.90 | 51.82 | 60.93 | a | 58.93 | a | 55.43 | 44.50 | 41.15 | 29.38 | a | 43.43 | |||||||||
1955 | 30.08 | 29.59 | 29.16 | 37.47 | 46.06 | 55.60 | a | 59.15 | 61.66 | 56.03 | 44.53 | 27.53 | a | 24.92 | 41.82 | |||||||||||
1956 | 25.29 | 22.31 | 31.23 | 43.22 | 52.68 | 53.60 | 65.19 | 63.19 | 54.87 | 43.29 | 33.42 | 31.72 | b | 43.33 | ||||||||||||
1957 | 16.76 | b | 28.80 | c | 35.00 | 44.07 | a | 54.56 | 58.27 | 58.57 | a | 60.19 | 59.35 | 43.10 | a | 33.79 | d | 32.56 | 43.75 | |||||||
1958 | 31.21 | b | 36.66 | 35.40 | 42.03 | a | 57.89 | 62.70 | 68.87 | 67.34 | 54.53 | 46.35 | 32.88 | 31.84 | 47.31 | |||||||||||
1959 | 28.63 | 30.46 | d | 35.21 | 43.55 | 47.02 | 54.68 | 64.24 | 61.29 | 51.93 | 46.22 | a | 33.81 | a | 30.85 | a | 43.99 | |||||||||
1960 | 24.61 | 31.26 | 33.71 | 42.20 | b | 47.44 | 56.82 | 66.87 | 59.77 | a | 55.47 | 46.74 | 34.77 | 27.27 | 43.91 | |||||||||||
1961 | 29.27 | 35.17 | d | 37.13 | 41.50 | 49.02 | 61.47 | a | 65.11 | 68.84 | f | 51.67 | i | 42.79 | 29.50 | 27.73 | c | 41.87 | b | |||||||
1962 | 26.37 | 32.23 | 33.89 | 44.18 | 45.53 | 56.00 | 61.82 | 60.83 | d | 56.17 | j | 45.73 | 37.48 | 32.87 | a | 43.36 | a | |||||||||
1963 | 26.47 | 36.48 | a | 37.11 | 40.88 | 50.00 | 55.85 | 60.71 | 63.10 | a | 60.17 | 46.81 | 35.87 | 27.23 | 45.06 | |||||||||||
1964 | 30.66 | 32.20 | a | 34.23 | c | 39.95 | 47.76 | 55.13 | 61.87 | 58.35 | 52.25 | 44.87 | 34.29 | a | 24.21 | 42.98 | ||||||||||
1965 | 30.31 | 33.50 | 35.63 | 43.85 | 48.40 | g | 57.16 | b | 64.84 | 63.66 | 53.75 | 46.94 | 39.22 | 29.24 | 45.28 | a | ||||||||||
1966 | 27.50 | 32.39 | 34.87 | 44.07 | 51.60 | a | 54.87 | 61.56 | 62.97 | 58.98 | a | 44.37 | 37.71 | a | 34.26 | 45.43 | ||||||||||
1967 | 33.95 | 35.15 | a | 35.61 | 39.57 | 50.35 | 61.82 | 66.08 | 68.95 | a | 61.73 | 45.52 | 36.47 | 29.18 | 47.03 | |||||||||||
1968 | 29.26 | 34.69 | 39.97 | 40.95 | 50.32 | 57.07 | 65.97 | 60.65 | 55.63 | 42.34 | 35.42 | 24.57 | a | 44.74 | ||||||||||||
1969 | 17.87 | 26.70 | 35.11 | 41.92 | 53.85 | 62.77 | 62.37 | 60.24 | 56.30 | 42.77 | 37.63 | 29.94 | 43.96 | |||||||||||||
1970 | 25.28 | a | 33.83 | b | 36.00 | 38.82 | 49.76 | 60.78 | a | 64.63 | 64.52 | 51.03 | 43.53 | 34.02 | a | 26.25 | a | 44.04 | ||||||||
1971 | 29.90 | 33.09 | 30.77 | a | 40.63 | 51.02 | 53.71 | b | 65.58 | 68.11 | 52.57 | 44.00 | a | 36.45 | b | ----- | z | 45.98 | a | |||||||
1972 | 27.30 | d | 29.19 | c | 35.89 | 39.80 | b | 52.58 | 57.00 | 62.71 | 63.90 | a | 50.20 | 44.48 | c | ----- | z | 21.96 | g | 46.31 | b | |||||
1973 | 23.65 | 32.07 | 37.47 | 42.79 | b | 51.45 | ----- | z | 64.72 | a | 62.61 | 55.78 | 44.48 | 31.63 | 32.87 | 43.59 | a | |||||||||
1974 | 27.15 | h | 34.09 | 35.65 | a | 41.05 | a | 46.32 | 57.82 | 61.26 | 64.10 | a | 58.64 | a | 46.07 | a | 37.38 | 33.60 | 46.91 | a | ||||||
1975 | 28.47 | 27.79 | 33.65 | 38.57 | 48.26 | 55.15 | 66.21 | 58.81 | b | 56.57 | c | ----- | z | 33.83 | 31.81 | 43.56 | a | |||||||||
1976 | 30.15 | 30.62 | 33.29 | 41.12 | 49.50 | 52.82 | 61.35 | 59.81 | 57.40 | 45.23 | 36.17 | d | 31.60 | a | 44.09 | |||||||||||
1977 | 24.63 | 34.02 | 36.18 | a | 45.60 | 46.66 | 59.68 | 61.69 | 68.02 | c | ----- | z | ----- | z | ----- | z | ----- | z | 47.06 | d | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.46 | 30.73 | 35.87 | 42.96 | 50.42 | 57.10 | 63.95 | 63.58 | 56.28 | 46.32 | 35.78 | 30.13 | 45.02 | |||||||||||||
S.D. | 5.79 | 3.98 | 2.89 | 2.72 | 2.78 | 2.66 | 2.49 | 2.54 | 2.85 | 2.20 | 2.87 | 3.31 | 1.58 | |||||||||||||
SKEW | -1.15 | -0.95 | 0.41 | 0.55 | 0.41 | 0.20 | -0.37 | -0.02 | -0.05 | 0.35 | -0.14 | -0.08 | -0.11 | |||||||||||||
MAX | 34.89 | 37.23 | 43.19 | 51.75 | 57.89 | 62.77 | 69.56 | 68.95 | 62.40 | 51.66 | 41.68 | 38.19 | 48.83 | |||||||||||||
MIN | 9.95 | 16.02 | 29.16 | 37.47 | 45.53 | 51.82 | 56.73 | 58.35 | 50.20 | 42.34 | 27.53 | 23.77 | 40.76 | |||||||||||||
YRS | 61 | 65 | 65 | 65 | 64 | 64 | 63 | 63 | 58 | 61 | 61 | 60 | 45 |