YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.59 | n | 46.53 | 37.06 | 23.48 | a | 14.13 | 30.30 | h | |||
1919 | 2.71 | 16.64 | 25.65 | 33.17 | 42.00 | 46.27 | s | 56.84 | 53.52 | 48.70 | 33.81 | ----- | z | 18.68 | 33.17 | b | ||||||||||
1920 | 19.13 | 27.48 | b | 25.46 | g | 28.00 | m | 38.83 | a | 47.21 | k | 53.06 | 50.26 | 44.85 | c | 28.79 | l | 24.50 | 15.03 | 34.14 | d | |||||
1921 | 23.17 | s | 20.54 | 28.84 | 29.88 | d | 37.97 | 48.00 | a | 55.68 | 54.45 | 46.03 | a | ----- | z | ----- | z | ----- | z | 40.17 | d | |||||
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.89 | b | 33.00 | 23.50 | 22.71 | 31.03 | h | |||
1923 | 17.19 | 21.25 | 23.26 | 31.33 | 37.35 | 42.30 | 54.39 | 53.00 | 42.97 | 32.03 | 25.00 | a | 18.21 | b | 33.19 | |||||||||||
1924 | 8.70 | k | ----- | 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 | 30.57 | w | 37.18 | n | 41.80 | 49.97 | 49.67 | a | 40.69 | a | 31.84 | 14.10 | 13.19 | 34.47 | e | |||||
1949 | 11.45 | 10.96 | 20.74 | 27.07 | 36.34 | b | 39.89 | l | 50.90 | 44.84 | 44.67 | 28.52 | 16.24 | a | 5.35 | 27.01 | a | |||||||||
1950 | 10.87 | 19.46 | 19.87 | 27.80 | 29.90 | 38.83 | a | 52.52 | 46.23 | 38.73 | 32.73 | e | 15.37 | 8.62 | b | 28.41 | ||||||||||
1951 | 7.19 | 14.39 | e | 16.00 | m | 30.20 | y | 36.37 | a | 35.90 | a | 50.81 | 49.30 | a | ----- | z | 33.46 | g | 20.50 | 14.19 | 28.58 | d | ||||
1952 | 19.84 | 15.54 | a | 19.50 | a | 29.67 | 34.33 | a | 41.60 | 44.29 | 50.12 | w | 42.93 | 28.87 | 14.00 | 8.29 | 27.17 | a | ||||||||
1953 | 19.00 | 12.89 | 21.42 | 25.47 | 29.90 | a | 43.23 | 52.74 | 48.65 | 38.71 | b | 28.81 | 20.40 | 5.13 | 28.86 | |||||||||||
1954 | 14.65 | 16.11 | a | 16.87 | 31.47 | 40.16 | 44.34 | a | 54.81 | 51.90 | 46.50 | b | 33.97 | a | 19.93 | 11.42 | 31.84 | |||||||||
1955 | 8.00 | 9.79 | 22.26 | 28.97 | 37.37 | a | 44.90 | 51.65 | 55.35 | 44.43 | 33.13 | 21.80 | e | 21.31 | b | 31.58 | ||||||||||
1956 | 22.19 | 14.34 | ----- | z | ----- | z | 38.80 | a | 46.80 | 51.57 | a | 50.52 | b | 44.53 | 34.58 | 15.27 | 12.55 | 33.12 | b | |||||||
1957 | 23.97 | a | 27.93 | 27.68 | 31.56 | e | 39.23 | 48.23 | 54.14 | c | 55.07 | a | 43.80 | 39.22 | d | 22.23 | d | 19.42 | 36.04 | |||||||
1958 | ----- | z | ----- | z | ----- | z | 29.57 | 40.42 | 44.80 | 51.52 | 55.52 | h | 46.20 | 33.55 | 19.37 | 12.65 | 34.76 | d | ||||||||
1959 | 10.32 | 16.80 | c | ----- | z | ----- | z | ----- | z | ----- | z | 52.77 | 52.55 | 43.89 | c | 32.45 | 18.40 | 17.27 | a | 30.56 | d | |||||
1960 | 7.48 | 19.24 | 27.19 | 28.93 | 34.32 | 47.03 | 54.19 | 52.90 | 45.97 | 32.77 | 22.17 | 15.10 | 32.28 | |||||||||||||
1961 | 9.32 | 18.71 | 23.10 | 30.57 | 37.77 | 50.50 | 54.61 | 54.16 | 43.33 | 33.50 | a | 26.13 | 11.70 | a | 32.78 | |||||||||||
1962 | 13.06 | 22.39 | e | 22.97 | a | 31.87 | 35.74 | 42.97 | 53.74 | 51.55 | 49.04 | c | 35.50 | a | 27.70 | 17.94 | 33.71 | |||||||||
1963 | 7.27 | a | 22.67 | a | 24.17 | a | 30.20 | 39.65 | 44.93 | a | 58.86 | c | 55.40 | a | 50.19 | c | 38.52 | 26.43 | 12.71 | 34.25 | ||||||
1964 | 11.32 | 12.28 | 21.45 | b | 29.57 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 18.97 | 16.00 | h | |||
1965 | 20.81 | 15.96 | b | 23.00 | d | 30.72 | a | 35.86 | c | 44.04 | b | 53.80 | a | 50.23 | a | 43.39 | b | 32.96 | c | 26.63 | c | 20.13 | a | 33.13 | ||
1966 | 13.89 | d | 15.81 | b | 20.62 | b | 30.07 | 41.00 | 46.57 | 52.76 | b | 53.57 | a | 45.93 | 35.32 | 26.23 | 14.33 | a | 33.01 | |||||||
1967 | 9.00 | 21.57 | 27.06 | 32.10 | 38.24 | b | 49.30 | c | 58.24 | b | 53.24 | b | 45.79 | b | 29.60 | u | 24.83 | a | 11.24 | b | 33.69 | a | ||||
1968 | 12.40 | a | 25.29 | h | 25.88 | f | 29.65 | d | 37.96 | e | ----- | z | 52.38 | j | ----- | z | 41.57 | ----- | z | 25.79 | a | 10.23 | 26.27 | f | ||
1969 | 23.06 | 21.64 | 22.00 | 32.43 | 40.61 | 47.23 | 57.74 | 57.26 | 48.60 | 27.33 | v | 18.80 | 19.29 | 35.33 | a | |||||||||||
1970 | 13.84 | 18.36 | 22.94 | 24.93 | 34.45 | 45.00 | 55.03 | 55.26 | 43.97 | 31.03 | 22.43 | 15.26 | 31.87 | |||||||||||||
1971 | 10.68 | 16.71 | 22.84 | 27.13 | 34.65 | 45.27 | 53.42 | 54.68 | 42.90 | 33.65 | 22.10 | 13.90 | 31.49 | |||||||||||||
1972 | 15.39 | 16.66 | 25.29 | 28.57 | 34.32 | 45.43 | 55.32 | 52.48 | 44.10 | 40.23 | 24.30 | 12.26 | 32.86 | |||||||||||||
1973 | 9.94 | 21.07 | 26.94 | 28.27 | 37.55 | 44.10 | 51.19 | 50.42 | 39.70 | 28.74 | 22.07 | 13.23 | 31.10 | |||||||||||||
1974 | 15.77 | 14.86 | 27.71 | 24.70 | 38.29 | 45.30 | 54.19 | 51.19 | 42.50 | 38.29 | 22.57 | 12.77 | 32.35 | |||||||||||||
1975 | 10.87 | 12.71 | 20.65 | 23.80 | 31.87 | 42.27 | 54.74 | 49.45 | 42.63 | c | 29.61 | 17.43 | 12.57 | a | 29.05 | |||||||||||
1976 | 10.42 | 23.66 | 21.23 | 30.03 | a | 39.48 | 41.80 | 54.00 | 50.68 | 45.90 | 28.97 | 15.59 | a | 9.00 | 30.90 | |||||||||||
1977 | 9.58 | 17.25 | 21.26 | 30.30 | ----- | z | 47.50 | 55.52 | 55.07 | a | 49.23 | 35.35 | 25.00 | 23.16 | 33.57 | a | ||||||||||
1978 | 22.32 | 23.96 | 29.19 | 30.37 | 36.94 | 44.70 | 51.42 | 49.52 | 44.27 | 32.61 | 28.07 | 11.19 | 33.71 | |||||||||||||
1979 | 10.45 | 16.43 | 24.26 | 25.83 | 36.16 | 44.93 | 49.00 | c | 47.90 | 45.70 | 30.87 | 21.37 | 17.84 | 30.90 | ||||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.44 | 18.06 | 23.45 | 29.21 | 37.00 | 44.65 | 53.40 | 51.88 | 44.55 | 33.27 | 21.71 | 14.35 | 32.06 | |||||||||||||
S.D. | 5.37 | 4.41 | 3.07 | 2.44 | 2.96 | 3.01 | 2.79 | 2.88 | 2.75 | 3.15 | 4.02 | 4.43 | 1.84 | |||||||||||||
SKEW | 0.42 | 0.34 | 0.20 | -0.63 | -0.72 | -0.67 | -0.72 | -0.40 | -0.11 | 0.40 | -0.40 | 0.04 | -0.22 | |||||||||||||
MAX | 23.97 | 27.93 | 29.19 | 33.17 | 42.00 | 50.50 | 58.86 | 57.26 | 50.19 | 40.23 | 28.07 | 23.16 | 36.04 | |||||||||||||
MIN | 2.71 | 9.79 | 16.87 | 23.80 | 29.90 | 35.90 | 44.29 | 44.84 | 38.71 | 28.52 | 14.00 | 5.13 | 28.41 | |||||||||||||
YRS | 33 | 33 | 29 | 30 | 32 | 30 | 34 | 32 | 36 | 31 | 35 | 37 | 21 |