YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.23 | 27.13 | 21.87 | 30.41 | i | |||
1915 | 19.90 | a | 25.79 | 28.58 | 38.23 | 41.87 | 48.95 | i | 60.03 | 57.06 | 57.52 | a | 28.92 | r | 23.93 | a | 18.87 | 37.18 | b | |||||||
1916 | 21.19 | 26.83 | 31.87 | 36.77 | 39.06 | 45.73 | 58.63 | a | 57.19 | 48.63 | 37.74 | h | 17.10 | j | 17.00 | 38.29 | b | |||||||||
1917 | 19.65 | 21.75 | 19.32 | 32.30 | 42.39 | 49.57 | 62.87 | 57.16 | 51.00 | 35.42 | 24.43 | 17.19 | 36.09 | |||||||||||||
1918 | 14.15 | e | 20.43 | 31.84 | 35.43 | 38.65 | 58.17 | 60.32 | 57.23 | 48.13 | 39.35 | 21.27 | 15.58 | 36.71 | ||||||||||||
1919 | 1.19 | 22.54 | 26.77 | 38.42 | f | 46.48 | 50.57 | 63.29 | 59.71 | 52.57 | 35.03 | 26.24 | a | 19.42 | 36.71 | a | ||||||||||
1920 | 23.90 | a | 30.54 | a | 28.97 | b | 33.90 | 40.71 | c | 50.23 | 56.65 | 55.42 | 47.73 | 33.93 | d | 24.13 | 15.23 | 36.78 | ||||||||
1921 | 18.68 | 21.36 | 32.55 | ----- | z | 34.77 | 54.57 | 61.71 | 62.62 | e | 49.13 | 41.00 | 25.97 | 26.62 | b | 39.00 | a | |||||||||
1922 | 19.06 | 24.52 | a | 28.67 | a | 35.60 | 43.87 | 50.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.64 | f | ||||
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 | 21.07 | 15.93 | a | 18.50 | j | |
1925 | 10.87 | 22.07 | 27.31 | b | 36.37 | 45.80 | a | 52.22 | l | 54.78 | d | 47.19 | 40.73 | 32.23 | ----- | z | ----- | z | 35.26 | c | ||||||
1926 | ----- | z | ----- | z | 30.55 | b | 40.71 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.55 | k |
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 | 48.42 | k | 62.58 | 61.42 | 49.10 | 38.58 | 28.07 | 18.87 | 43.10 | f | ||||||
1935 | 22.52 | 26.18 | 31.10 | b | 38.33 | 41.23 | 50.57 | 58.45 | 59.86 | c | 50.30 | 46.59 | b | 26.27 | 19.48 | 39.24 | ||||||||||
1936 | 18.35 | 25.59 | 26.90 | 37.83 | 42.87 | a | 53.90 | 59.65 | 60.93 | a | 49.60 | 38.23 | 23.50 | 18.97 | 38.03 | |||||||||||
1937 | -0.66 | b | 22.67 | a | 28.65 | 36.37 | 43.87 | 49.37 | 62.68 | 57.07 | a | 51.67 | 37.35 | 24.00 | 25.71 | 36.56 | ||||||||||
1938 | 19.35 | 24.11 | a | 29.65 | 35.64 | b | 37.37 | a | 47.52 | c | 55.94 | 64.86 | c | 50.40 | 33.74 | 14.53 | 18.94 | 36.00 | ||||||||
1939 | 19.90 | 16.71 | 25.71 | 33.72 | a | 41.52 | 49.27 | 59.26 | 54.39 | 51.37 | ----- | z | 26.73 | 18.66 | b | 36.11 | a | |||||||||
1940 | 21.77 | a | 25.85 | b | 28.04 | d | 38.11 | b | 43.92 | e | 53.69 | d | 58.97 | a | 58.00 | c | 53.80 | 39.50 | c | ----- | z | 25.50 | c | 40.65 | a | |
1941 | 26.03 | b | 29.23 | b | 29.41 | d | 33.45 | a | 42.34 | b | 47.96 | c | 54.72 | b | 55.29 | 45.70 | c | 36.48 | b | 23.41 | c | 21.94 | 37.16 | |||
1942 | 15.97 | a | 17.40 | c | 22.82 | c | 34.21 | f | 37.87 | 44.28 | e | 57.13 | 52.95 | i | ----- | z | 39.72 | b | 28.43 | b | 22.86 | c | 31.83 | c | ||
1943 | 19.92 | g | 24.88 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.64 | q | 19.80 | 24.89 | c | 23.19 | i | |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.76 | e | 58.81 | d | 57.67 | d | 46.90 | 34.06 | 18.43 | 9.79 | g | 43.11 | f | |||
1946 | 15.92 | e | 12.96 | d | 21.12 | e | 31.23 | 36.45 | 49.43 | 57.81 | ----- | z | ----- | z | 32.32 | 21.63 | 15.10 | 29.40 | b | |||||||
1947 | 7.35 | 16.27 | b | 24.00 | 31.07 | 42.31 | b | ----- | z | 51.71 | c | ----- | z | ----- | z | 39.80 | a | 25.67 | 18.65 | 28.54 | c | |||||
1948 | 15.83 | a | 22.76 | 25.58 | 37.76 | a | 40.97 | 46.69 | a | 54.45 | 55.29 | 45.53 | 33.84 | 18.37 | 20.26 | 34.78 | ||||||||||
1949 | 11.00 | 16.18 | 26.81 | 34.83 | 40.74 | 50.57 | 60.13 | a | 52.23 | a | 52.20 | 34.77 | 23.00 | 11.97 | 34.54 | |||||||||||
1950 | 15.68 | 22.93 | 26.71 | 35.40 | 38.56 | d | 50.19 | i | 60.71 | 52.29 | 45.60 | 38.68 | 21.27 | 17.97 | 34.16 | a | ||||||||||
1951 | 17.00 | 20.21 | 24.87 | 34.40 | 41.94 | 44.80 | 60.96 | c | 59.37 | a | 47.14 | a | 36.69 | b | 23.03 | a | 19.94 | 35.86 | ||||||||
1952 | 23.27 | a | 20.38 | 25.42 | 36.47 | 41.45 | 48.03 | 57.33 | a | 59.31 | e | 49.28 | a | 34.10 | 22.93 | 17.71 | 36.31 | |||||||||
1953 | 19.32 | 16.26 | a | 27.45 | 32.24 | a | 37.03 | a | 48.39 | b | 60.42 | e | 55.33 | a | 45.37 | 33.13 | 22.87 | 10.13 | 34.00 | |||||||
1954 | 16.06 | 17.86 | 22.20 | a | 35.52 | a | 44.03 | 49.03 | a | 62.54 | c | 56.33 | a | 51.23 | 38.03 | 23.70 | 14.32 | 35.91 | ||||||||
1955 | 14.90 | a | 13.07 | a | 20.65 | 29.14 | b | 39.62 | b | 46.37 | c | 56.52 | 60.20 | a | 46.21 | a | 36.52 | 22.69 | a | 20.79 | b | 33.89 | ||||
1956 | 23.39 | 14.89 | b | 22.69 | b | 32.72 | a | 40.79 | c | 51.76 | a | 57.76 | b | 52.13 | 47.80 | 34.07 | a | 11.69 | a | 9.61 | 33.27 | |||||
1957 | 25.13 | a | 29.36 | 30.45 | 33.86 | a | 38.00 | a | 51.21 | a | 57.90 | b | 58.84 | 44.79 | b | 40.16 | f | 24.54 | b | 17.29 | 37.40 | a | ||||
1958 | 16.10 | 25.32 | 27.65 | 32.70 | 43.97 | a | 52.79 | a | 58.81 | 61.06 | 51.50 | 39.27 | a | 23.86 | a | 15.10 | 37.34 | |||||||||
1959 | 14.35 | 19.64 | 22.55 | b | 37.41 | c | 41.80 | a | 53.43 | 61.07 | a | 58.57 | c | 49.97 | a | 35.61 | c | 22.73 | 21.10 | 36.52 | ||||||
1960 | 12.23 | 21.17 | 30.35 | 35.53 | 41.16 | 54.17 | 59.40 | a | 57.27 | a | 50.31 | a | 39.13 | 25.76 | a | 15.07 | b | 36.80 | ||||||||
1961 | 12.65 | 21.75 | 26.57 | a | 33.00 | b | 40.00 | 51.64 | b | 59.16 | 59.50 | a | 48.03 | 34.03 | 26.53 | 11.55 | 35.37 | |||||||||
1962 | 11.10 | 24.32 | 24.16 | 36.72 | a | 39.20 | a | 47.57 | 57.42 | 55.33 | a | 50.69 | a | 38.19 | 30.47 | 19.10 | 36.19 | |||||||||
1963 | 12.87 | 24.61 | 25.80 | a | 33.10 | a | 42.16 | 46.07 | a | 60.97 | a | 60.20 | a | 51.89 | b | 40.42 | 26.31 | a | 11.29 | 36.31 | ||||||
1964 | 11.48 | 11.66 | 22.35 | 33.31 | a | 40.19 | 47.43 | 61.58 | 57.35 | 49.90 | 35.30 | a | 21.50 | 18.55 | 34.22 | |||||||||||
1965 | 22.71 | 21.21 | 24.14 | b | 33.70 | 39.30 | a | 45.53 | 58.33 | a | 54.03 | a | 45.90 | 32.55 | 28.27 | 23.00 | 35.72 | |||||||||
1966 | 10.42 | 20.07 | a | 26.32 | 35.03 | 42.96 | c | 48.79 | b | 60.36 | c | 59.23 | 51.27 | 34.84 | 25.37 | 16.67 | a | 35.94 | ||||||||
1967 | 10.70 | a | 18.46 | 28.93 | a | 31.07 | 39.55 | 49.67 | 62.10 | 57.10 | a | 51.90 | 34.42 | 25.40 | 8.52 | 34.82 | ||||||||||
1968 | 0.42 | 26.21 | 29.77 | 34.63 | 39.97 | a | 47.71 | b | 56.61 | 53.52 | 45.67 | 34.47 | a | 24.70 | 9.48 | 33.60 | ||||||||||
1969 | 25.26 | 20.11 | 20.90 | 32.20 | 40.81 | 47.48 | i | 59.86 | c | 60.97 | 49.67 | 35.43 | a | 23.58 | d | 20.97 | 35.43 | a | ||||||||
1970 | 16.23 | 22.33 | a | 26.90 | 28.60 | 41.42 | 48.00 | 59.52 | 60.55 | 46.52 | a | 33.58 | 25.21 | a | 16.29 | 35.43 | ||||||||||
1971 | 11.71 | 17.46 | b | 21.87 | a | 30.07 | 36.80 | a | 46.53 | 59.07 | a | 59.39 | 45.80 | 36.35 | 20.33 | 16.19 | 33.46 | |||||||||
1972 | 16.06 | 16.59 | 27.61 | 32.37 | 39.19 | 51.03 | 56.61 | c | 56.45 | 47.93 | 44.42 | 25.70 | 17.97 | a | 35.99 | |||||||||||
1973 | 19.55 | 26.25 | 29.28 | b | 32.77 | 40.97 | 45.97 | a | 54.87 | 53.47 | a | 41.33 | 29.55 | 27.10 | 15.94 | 34.75 | ||||||||||
1974 | 18.97 | 13.93 | 30.00 | 26.83 | a | 41.61 | 50.17 | 58.06 | 53.13 | 48.45 | a | 37.19 | 23.10 | 11.13 | 34.38 | |||||||||||
1975 | 6.86 | b | 18.79 | 22.31 | e | 25.62 | f | 35.44 | d | 43.34 | a | 58.68 | 52.71 | 49.10 | 31.45 | 17.93 | b | 16.77 | 32.13 | a | ||||||
1976 | 11.65 | 23.59 | 20.60 | a | 29.69 | a | 42.52 | 45.13 | 57.97 | b | 52.75 | c | 48.40 | 33.35 | 17.62 | a | 6.87 | a | 32.51 | |||||||
1977 | 13.55 | 14.32 | 19.23 | a | 32.17 | a | 37.73 | a | 49.13 | 60.10 | 58.74 | 52.47 | 37.29 | 23.33 | 21.47 | a | 34.96 | |||||||||
1978 | 21.48 | 24.95 | f | 32.58 | 37.12 | n | 38.71 | 47.93 | 57.13 | 54.68 | 48.00 | 37.55 | 30.67 | 14.94 | 38.37 | b | ||||||||||
1979 | 20.55 | 20.30 | a | 26.42 | 33.27 | 41.93 | b | 46.97 | 53.58 | 50.29 | 47.23 | 35.77 | 20.13 | 14.61 | 34.25 | |||||||||||
1980 | 28.10 | 25.83 | 28.71 | 33.60 | 39.06 | 45.13 | 58.10 | b | ----- | z | 46.20 | 30.94 | 21.10 | a | 18.84 | 34.15 | a | |||||||||
1981 | 20.06 | 17.96 | 25.27 | a | 35.40 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.67 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 16.26 | 21.20 | 26.42 | 33.96 | 40.63 | 48.93 | 58.76 | 56.95 | 48.75 | 36.33 | 23.50 | 17.38 | 35.53 | |||||||||||||
S.D. | 6.27 | 4.49 | 3.53 | 2.65 | 2.49 | 3.18 | 2.51 | 3.44 | 3.04 | 3.37 | 3.61 | 4.42 | 1.44 | |||||||||||||
SKEW | -0.67 | -0.13 | -0.26 | -0.41 | -0.10 | 0.47 | -0.43 | -0.36 | -0.08 | 0.67 | -0.78 | -0.22 | 0.14 | |||||||||||||
MAX | 28.10 | 30.54 | 32.58 | 38.33 | 46.48 | 58.17 | 63.29 | 64.86 | 57.52 | 46.59 | 30.67 | 26.62 | 39.24 | |||||||||||||
MIN | -0.66 | 11.66 | 19.23 | 26.83 | 34.77 | 42.76 | 51.71 | 47.19 | 40.73 | 29.55 | 11.69 | 6.87 | 32.51 | |||||||||||||
YRS | 53 | 53 | 54 | 48 | 52 | 48 | 53 | 49 | 50 | 50 | 53 | 54 | 35 |