YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.35 | 25.35 | k | |
1916 | 14.97 | 19.54 | a | 40.64 | c | 51.97 | a | 61.37 | d | 68.37 | 84.33 | a | 78.00 | a | 65.37 | 50.55 | 38.70 | 18.17 | a | 49.33 | ||||||
1917 | 16.79 | b | 13.04 | a | 35.74 | 45.72 | a | 64.41 | b | 70.75 | f | 79.97 | 74.86 | b | 66.59 | a | ----- | z | 43.00 | 15.38 | b | 45.55 | b | |||
1918 | 10.33 | a | ----- | z | 45.00 | ----- | z | 65.60 | a | 73.63 | 79.87 | 79.65 | 61.64 | b | ----- | z | 39.03 | a | 27.03 | 53.53 | c | |||||
1919 | 25.03 | a | 20.16 | c | 30.40 | a | 52.17 | 65.23 | 71.83 | 78.58 | ----- | z | ----- | z | 46.80 | a | ----- | z | ----- | z | 48.77 | d | ||||
1920 | ----- | z | ----- | z | ----- | z | 42.70 | 67.07 | a | 74.79 | b | 76.21 | b | 76.19 | 70.70 | 61.97 | 35.10 | 23.58 | 58.70 | c | ||||||
1921 | 25.13 | 28.11 | 36.55 | 55.80 | 66.61 | 79.82 | b | 85.61 | 77.81 | 68.07 | 56.19 | 29.07 | a | 18.56 | v | 55.34 | a | |||||||||
1922 | 19.21 | b | 19.54 | 35.16 | 49.57 | 71.97 | 73.69 | a | 77.00 | a | 77.93 | b | 71.53 | 57.65 | 37.80 | 18.27 | a | 50.78 | ||||||||
1923 | 21.65 | 16.04 | 24.61 | 49.28 | a | 67.61 | 79.90 | 81.55 | 72.03 | 69.07 | 55.19 | 43.87 | 31.29 | 51.01 | ||||||||||||
1924 | 9.90 | 26.62 | 35.00 | 47.17 | 57.06 | 70.33 | 77.13 | a | 73.03 | 62.63 | 62.06 | 33.80 | 11.65 | 47.20 | ||||||||||||
1925 | 17.14 | b | 21.64 | 37.16 | 54.90 | 61.94 | 72.80 | 76.27 | a | 79.20 | a | 64.23 | 38.06 | 35.13 | 18.65 | 48.09 | ||||||||||
1926 | 20.00 | 24.29 | 27.97 | 49.93 | 66.90 | 67.13 | 77.61 | 72.90 | 56.47 | 46.58 | 26.50 | 16.81 | 46.09 | |||||||||||||
1927 | 15.19 | 23.07 | 35.45 | 48.60 | 54.68 | 70.67 | 75.03 | 72.10 | 68.17 | 56.16 | 29.83 | 12.52 | 46.79 | |||||||||||||
1928 | 18.45 | 23.34 | 35.81 | 45.93 | a | 68.23 | a | 68.03 | 78.68 | 77.93 | c | 60.47 | 50.03 | a | 36.76 | a | 28.21 | b | 49.32 | |||||||
1929 | 13.60 | a | 13.96 | 34.10 | 46.53 | 54.35 | 68.10 | a | 77.06 | 75.35 | 65.10 | a | 53.00 | a | 35.63 | 23.52 | 46.69 | |||||||||
1930 | 12.35 | 31.57 | 42.55 | 62.50 | 67.55 | 77.43 | 81.74 | 85.68 | 70.14 | a | 51.74 | 40.20 | 28.16 | 54.30 | ||||||||||||
1931 | 30.10 | 36.79 | 38.16 | 58.40 | 65.35 | 78.57 | 83.26 | 74.81 | 71.93 | 62.06 | 47.03 | 34.06 | 56.71 | |||||||||||||
1932 | 24.81 | 26.82 | a | 27.13 | 51.80 | 66.72 | b | 77.86 | a | 80.48 | 78.94 | 67.57 | 52.03 | 36.77 | 21.26 | 51.02 | ||||||||||
1933 | 27.00 | 18.25 | 32.39 | 49.14 | a | 65.13 | 82.37 | 81.90 | a | 76.39 | 72.72 | a | 50.48 | 31.55 | a | 19.06 | 50.53 | |||||||||
1934 | 25.63 | a | 20.86 | 33.40 | a | 48.37 | 71.87 | 76.20 | 79.39 | 76.00 | a | 66.27 | 59.32 | 42.70 | 21.59 | b | 51.80 | |||||||||
1935 | 15.55 | 31.39 | 34.84 | 49.90 | 66.39 | 72.90 | 81.00 | 73.32 | 63.00 | 52.13 | 29.33 | 22.77 | 49.38 | |||||||||||||
1936 | 10.90 | 7.76 | 32.63 | a | 42.93 | 67.16 | 70.97 | 84.90 | a | 75.60 | a | 69.57 | 47.00 | d | 31.30 | 25.42 | 47.18 | |||||||||
1937 | 15.28 | b | 22.32 | 33.48 | 45.60 | 66.90 | 74.17 | 79.92 | e | 81.90 | 70.20 | 51.39 | 35.20 | 20.50 | u | 52.40 | a | |||||||||
1938 | 21.41 | d | 32.14 | 47.52 | 55.30 | 65.19 | 75.87 | 78.84 | 80.52 | 70.03 | 62.71 | 38.59 | a | 24.52 | 54.39 | |||||||||||
1939 | 25.32 | 17.85 | a | 34.13 | 49.40 | 70.65 | 74.13 | 80.74 | 77.32 | 71.10 | a | 57.55 | 46.77 | 35.13 | 53.34 | |||||||||||
1940 | 17.84 | 27.00 | 32.39 | 50.30 | 62.94 | 72.50 | 80.77 | 72.61 | 71.67 | 57.29 | 31.72 | a | 25.87 | a | 50.24 | |||||||||||
1941 | 22.03 | a | 23.18 | 36.77 | 57.77 | 69.50 | a | 74.60 | 79.90 | 75.16 | 66.33 | 55.84 | 39.17 | 29.65 | 52.49 | |||||||||||
1942 | 26.35 | 24.79 | 41.33 | a | 60.80 | 62.77 | 72.13 | 76.35 | 75.90 | 62.87 | 58.06 | 36.33 | 17.74 | 51.29 | ||||||||||||
1943 | 12.84 | 26.21 | 27.48 | 50.90 | 62.10 | 73.97 | 81.45 | 75.68 | 64.83 | 57.90 | 31.67 | 27.39 | 49.37 | |||||||||||||
1944 | 29.84 | 24.72 | 31.90 | 52.70 | 67.65 | 76.23 | 77.35 | 77.48 | 67.40 | 57.61 | 39.17 | 22.32 | 52.03 | |||||||||||||
1945 | 17.52 | 25.32 | 45.74 | 48.60 | 60.94 | 68.77 | 75.61 | 75.94 | 64.60 | 55.48 | 32.77 | 18.06 | 49.11 | |||||||||||||
1946 | 18.81 | 19.11 | 46.13 | 55.43 | 63.45 | 73.40 | 79.55 | 74.58 | 65.87 | 54.45 | 38.07 | 21.48 | 50.86 | |||||||||||||
1947 | 24.29 | 19.96 | 33.90 | 46.27 | 60.52 | 71.27 | 80.65 | 81.74 | 65.87 | 65.10 | 29.53 | 22.03 | 50.09 | |||||||||||||
1948 | 15.80 | a | 20.24 | 34.23 | 55.60 | 68.23 | 73.00 | 80.06 | 79.65 | 75.67 | 61.29 | 38.13 | 24.06 | 52.16 | ||||||||||||
1949 | 22.55 | 21.07 | a | 32.61 | 57.53 | 68.00 | 80.67 | 80.94 | 80.13 | 65.03 | 56.90 | 38.60 | 24.23 | a | 52.36 | |||||||||||
1950 | 14.77 | a | 22.20 | c | 27.68 | 36.17 | 59.90 | 75.10 | 75.55 | 72.74 | 69.59 | a | ----- | z | 36.46 | b | 18.58 | e | 46.25 | a | ||||||
1951 | 18.35 | e | 24.46 | d | 32.04 | f | 49.17 | 72.33 | d | 71.89 | b | 77.71 | 70.25 | g | 61.03 | a | 52.79 | b | 30.53 | 19.70 | d | 47.80 | b | |||
1952 | 20.17 | b | 30.54 | a | 32.44 | d | 63.16 | e | 67.52 | 76.60 | 79.45 | 76.75 | c | 68.97 | 52.27 | i | ----- | z | ----- | z | 57.29 | c | ||||
1953 | 21.93 | d | 24.54 | b | 37.34 | b | 45.86 | a | 64.26 | 75.33 | 79.53 | a | 78.73 | a | 67.13 | 64.10 | 43.77 | 25.35 | 52.32 | |||||||
1954 | 15.26 | 36.29 | 34.13 | 50.00 | 58.65 | 75.10 | 79.39 | 76.35 | 63.87 | 52.39 | 41.30 | 27.16 | 50.82 | |||||||||||||
1955 | 20.00 | 21.64 | 31.87 | 59.83 | 71.58 | 76.40 | 82.97 | 81.16 | 66.47 | 57.07 | a | 29.63 | 17.84 | 51.37 | ||||||||||||
1956 | 22.90 | 24.14 | 32.77 | 48.40 | 64.61 | 79.13 | 75.23 | 77.22 | d | 64.97 | a | 63.13 | 37.43 | 25.74 | 51.31 | |||||||||||
1957 | 12.14 | b | 25.04 | b | 36.10 | 53.00 | 66.23 | a | 73.20 | 82.23 | 77.87 | 65.47 | 55.19 | 35.63 | 27.42 | 50.79 | ||||||||||
1958 | 25.32 | 24.43 | 40.19 | 57.47 | 69.42 | 69.83 | 77.16 | 78.06 | 66.73 | 57.55 | 39.00 | a | 16.35 | 51.79 | ||||||||||||
1959 | 13.39 | 22.71 | 39.47 | a | 53.00 | 67.71 | 76.70 | 81.81 | 80.23 | 66.77 | 48.40 | a | 28.80 | 32.93 | a | 50.99 | ||||||||||
1960 | 20.61 | 25.93 | 30.17 | a | 51.77 | 66.81 | 74.13 | 81.45 | 80.34 | b | 69.27 | 56.77 | 39.33 | 23.19 | 51.65 | |||||||||||
1961 | 19.32 | 34.44 | c | 43.48 | 47.63 | 66.58 | 80.43 | 80.58 | 83.73 | a | 68.39 | b | 59.16 | 37.30 | 21.64 | c | 53.56 | |||||||||
1962 | 15.06 | 19.93 | 36.55 | 50.52 | a | 68.03 | b | 75.72 | a | 76.52 | 77.97 | 66.93 | a | 59.26 | 41.60 | 26.23 | a | 51.19 | ||||||||
1963 | 11.07 | a | 21.00 | 40.17 | a | 56.80 | 65.16 | 77.73 | 81.58 | 78.10 | 70.33 | 68.87 | 44.13 | 18.35 | 52.77 | |||||||||||
1964 | 27.29 | 29.83 | 33.00 | 53.14 | a | 69.81 | 72.69 | a | 82.84 | 72.74 | 63.77 | 55.37 | a | 41.14 | a | 19.17 | b | 51.73 | ||||||||
1965 | 16.42 | 17.75 | 28.16 | 48.33 | 66.00 | 71.27 | 76.19 | 74.97 | a | 57.00 | 56.52 | 37.57 | b | 29.40 | a | 48.30 | ||||||||||
1966 | 9.35 | 23.32 | 38.58 | 45.30 | 62.47 | a | 76.17 | 82.90 | 74.10 | 68.20 | 54.17 | a | 35.03 | 22.77 | a | 49.36 | ||||||||||
1967 | 20.58 | 18.71 | 38.26 | 50.10 | 61.29 | 73.17 | a | 77.35 | 76.16 | 71.03 | a | 53.03 | b | 35.37 | 25.87 | 50.08 | ||||||||||
1968 | 20.35 | 24.52 | 46.26 | 54.40 | 62.32 | 73.27 | 78.35 | 76.45 | 69.14 | a | 57.19 | 36.77 | 21.26 | 51.69 | ||||||||||||
1969 | 16.00 | 26.32 | 35.45 | 55.68 | b | 67.19 | 68.37 | 78.19 | 81.58 | 68.50 | 49.97 | 38.57 | 27.10 | a | 51.08 | |||||||||||
1970 | 15.23 | 25.07 | a | 36.00 | a | 49.80 | 60.84 | 78.10 | 84.32 | 80.48 | 67.83 | 54.57 | a | 34.90 | 21.16 | 50.69 | ||||||||||
1971 | 12.62 | o | 26.59 | a | 34.71 | 53.07 | 65.19 | 77.87 | 76.06 | 77.61 | 70.21 | a | 57.77 | 36.31 | a | 23.06 | 54.41 | a | ||||||||
1972 | 12.45 | 19.34 | 32.32 | 47.13 | 71.35 | 76.90 | 75.81 | 76.71 | 63.86 | a | 50.73 | a | 32.57 | 16.65 | 47.99 | |||||||||||
1973 | 24.39 | 27.43 | 44.39 | 52.33 | 64.94 | ----- | z | ----- | z | 77.00 | f | 66.10 | 58.87 | 33.70 | 20.61 | 43.64 | c | |||||||||
1974 | 16.45 | 23.36 | 31.03 | 51.43 | 59.42 | 75.48 | a | 82.97 | 73.26 | 61.97 | 54.42 | 34.63 | ----- | z | 51.31 | a | ||||||||||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | 70.97 | a | 72.60 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.78 | j | |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | 69.68 | 79.57 | 82.42 | 81.32 | c | 72.30 | 50.52 | 31.52 | a | 15.58 | 60.36 | d | ||||||
1977 | 9.16 | 28.07 | a | 43.23 | 60.70 | 76.90 | 75.30 | 81.29 | 72.10 | 64.17 | 56.13 | 36.20 | 18.65 | 51.82 | ||||||||||||
1978 | 14.58 | 21.96 | 38.84 | 53.14 | a | 70.68 | 75.79 | a | 77.10 | 76.42 | 71.14 | b | 57.10 | 35.00 | a | ----- | z | 53.80 | a | |||||||
1979 | 9.68 | 17.57 | 33.13 | 46.27 | 60.03 | b | 74.09 | h | 79.93 | b | 74.23 | 68.83 | a | 51.97 | 34.83 | 29.77 | 46.02 | a | ||||||||
1980 | 19.65 | 23.41 | 35.03 | 58.00 | a | 73.40 | a | 76.00 | a | 83.03 | 76.29 | 65.40 | 49.58 | 39.00 | b | 21.83 | b | 51.72 | ||||||||
1981 | 24.35 | ----- | z | 43.29 | ----- | z | ----- | z | ----- | z | 76.06 | o | 76.90 | 66.04 | b | 51.11 | c | 44.63 | 22.77 | 47.01 | e | |||||
1982 | 9.18 | c | 23.54 | 34.55 | b | 43.33 | o | 70.07 | c | 70.93 | 80.00 | a | 74.74 | d | 66.90 | 55.33 | d | 33.26 | c | 28.06 | 49.69 | a | ||||
1983 | 23.65 | 29.79 | 37.43 | q | 49.83 | 63.61 | 74.33 | 83.16 | 83.61 | 68.40 | 54.22 | d | 35.88 | d | 10.82 | c | 52.48 | a | ||||||||
1984 | 18.90 | a | 33.62 | 31.80 | a | 55.60 | ----- | z | 75.53 | 80.16 | 82.28 | b | 65.47 | m | 54.89 | m | 39.92 | r | 22.43 | a | 50.04 | d | ||||
1985 | 19.41 | b | 22.18 | 41.80 | a | 54.57 | b | 67.89 | l | 69.84 | e | 78.94 | 72.07 | a | 65.17 | a | 55.20 | a | 27.93 | b | 11.77 | 47.17 | a | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.50 | 23.79 | 35.92 | 51.56 | 65.78 | 74.34 | 79.73 | 77.12 | 66.93 | 55.30 | 36.34 | 22.57 | 50.75 | |||||||||||||
S.D. | 5.40 | 5.35 | 5.17 | 5.07 | 4.37 | 3.42 | 2.63 | 3.17 | 3.57 | 5.07 | 4.63 | 5.35 | 2.11 | |||||||||||||
SKEW | 0.10 | 0.05 | 0.34 | -0.00 | -0.30 | -0.01 | 0.07 | 0.40 | -0.46 | -0.25 | 0.14 | 0.02 | -0.04 | |||||||||||||
MAX | 30.10 | 36.79 | 47.52 | 63.16 | 76.90 | 82.37 | 85.61 | 85.68 | 75.67 | 68.87 | 47.03 | 35.13 | 56.71 | |||||||||||||
MIN | 9.16 | 7.76 | 24.61 | 36.17 | 54.35 | 67.13 | 75.03 | 72.03 | 56.47 | 38.06 | 26.50 | 10.82 | 46.09 | |||||||||||||
YRS | 66 | 65 | 65 | 65 | 67 | 66 | 67 | 66 | 67 | 64 | 66 | 64 | 49 |