YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.32 | 46.39 | 22.95 | 9.68 | 33.58 | h | ||||
1911 | 1.35 | 15.12 | 27.33 | a | 40.65 | 56.00 | 67.55 | 65.50 | 61.81 | 52.85 | 40.68 | 17.46 | c | 17.27 | 38.63 | |||||||||||
1912 | -10.35 | a | 6.97 | 18.10 | 41.53 | 52.45 | a | 59.27 | 66.73 | 59.78 | a | 56.32 | 43.70 | p | 30.82 | 16.50 | a | 36.19 | a | |||||||
1913 | 3.84 | b | 4.48 | 15.76 | 44.60 | a | 48.44 | 64.03 | 63.97 | 66.14 | b | 55.03 | a | 39.69 | 33.72 | 23.84 | 38.63 | |||||||||
1914 | 12.31 | -0.80 | 22.50 | 36.60 | a | 55.29 | 62.24 | a | 70.05 | 62.90 | 56.32 | 50.18 | 27.47 | 7.89 | 38.58 | |||||||||||
1915 | 6.23 | 19.73 | 26.00 | 50.12 | 49.03 | 57.38 | 62.85 | 62.34 | 55.33 | 44.72 | b | 28.50 | 16.02 | g | 42.02 | a | ||||||||||
1916 | 0.95 | a | 5.12 | a | 18.74 | 38.80 | 49.82 | a | 57.88 | 74.61 | 65.80 | a | 53.54 | b | 40.05 | 27.23 | 6.58 | 36.59 | ||||||||
1917 | 2.22 | d | -0.09 | 22.89 | 37.19 | a | 52.24 | b | 61.64 | e | 71.55 | a | 64.03 | 58.42 | 33.13 | a | 33.23 | b | 1.71 | 36.51 | ||||||
1918 | -1.24 | 8.86 | 32.27 | 41.40 | a | 52.30 | a | 61.37 | 66.66 | b | 66.48 | 48.80 | 43.73 | 33.00 | a | 19.58 | 39.43 | |||||||||
1919 | 15.65 | 13.02 | a | 22.84 | 41.13 | 54.98 | 66.87 | 69.85 | 64.71 | 56.73 | 37.65 | 20.37 | 3.02 | 38.90 | ||||||||||||
1920 | 0.66 | 10.76 | 25.06 | 32.70 | 53.34 | 62.93 | 64.69 | 64.68 | 59.72 | 50.47 | a | 25.43 | 17.10 | a | 38.96 | |||||||||||
1921 | 14.10 | 17.77 | 23.50 | 44.22 | 54.92 | 66.90 | 72.48 | 63.94 | 56.75 | 44.71 | 20.17 | 12.90 | 41.03 | |||||||||||||
1922 | 5.55 | 8.31 | a | 25.58 | 40.20 | 60.17 | a | 63.23 | 64.71 | 66.03 | 58.60 | 45.79 | 32.95 | 8.06 | 39.93 | |||||||||||
1923 | 8.19 | 4.76 | a | 13.67 | a | 38.40 | 54.86 | b | 66.55 | 69.90 | 60.87 | 56.93 | a | 44.58 | a | 33.70 | 22.27 | 39.56 | ||||||||
1924 | -2.75 | a | 15.64 | 25.39 | 38.58 | 46.18 | 58.17 | 64.69 | 61.77 | 53.15 | 50.63 | 25.10 | a | 1.76 | 36.53 | |||||||||||
1925 | 7.35 | 13.45 | 28.07 | c | 44.29 | a | 50.35 | 61.58 | 65.92 | 66.61 | 57.45 | 33.22 | a | 26.17 | 10.02 | 38.71 | ||||||||||
1926 | 9.23 | 15.43 | 18.87 | 37.08 | 54.92 | 56.92 | 66.45 | 63.26 | 49.53 | a | 40.02 | 19.85 | 7.68 | 36.60 | ||||||||||||
1927 | 4.76 | 13.64 | 28.73 | 38.87 | 47.68 | 59.97 | 63.87 | 60.08 | 59.12 | 45.79 | 22.35 | 1.48 | 37.19 | |||||||||||||
1928 | 8.44 | 13.59 | 23.61 | 33.12 | 56.08 | 58.20 | 65.97 | 64.85 | 52.08 | 43.84 | 31.63 | 18.18 | 39.13 | |||||||||||||
1929 | -5.68 | 5.38 | 27.35 | a | 40.52 | 49.32 | 60.67 | 68.27 | 65.74 | 53.60 | 45.73 | 23.83 | 9.76 | 37.04 | ||||||||||||
1930 | -0.72 | a | 18.82 | 24.55 | 42.82 | 53.24 | 64.13 | 67.31 | 68.45 | 55.20 | 43.13 | 29.85 | 16.71 | 40.29 | ||||||||||||
1931 | 14.70 | k | 24.16 | 26.60 | 43.77 | 51.81 | 65.62 | 69.84 | 64.23 | 61.43 | 49.87 | 34.88 | 23.26 | 46.86 | a | |||||||||||
1932 | 14.65 | 12.19 | 16.06 | 40.53 | 53.85 | 66.58 | 67.06 | 66.23 | 55.07 | 40.58 | 23.87 | 8.84 | 38.79 | |||||||||||||
1933 | 13.68 | a | 4.45 | 21.88 | e | 38.47 | a | 54.42 | 68.54 | b | 69.52 | 63.82 | 58.78 | 38.40 | 22.00 | 4.77 | 38.23 | |||||||||
1934 | 13.63 | 7.73 | 18.89 | 37.65 | 58.92 | 63.16 | a | 66.77 | 57.78 | m | 53.63 | 46.90 | 32.45 | 8.34 | 37.10 | a | ||||||||||
1935 | 2.06 | 17.82 | 24.10 | 37.42 | 48.88 | a | 57.17 | a | 71.68 | 64.56 | 51.90 | 42.13 | 20.20 | 13.57 | a | 37.62 | ||||||||||
1936 | -0.44 | -4.68 | a | 23.32 | 32.22 | 54.94 | 59.28 | 71.98 | 65.15 | 57.74 | a | 36.97 | 21.13 | 13.52 | 35.93 | |||||||||||
1937 | -1.24 | 9.32 | 21.02 | 37.37 | 54.52 | 62.05 | 68.27 | 70.05 | 55.77 | 39.69 | 25.07 | 9.79 | 37.64 | |||||||||||||
1938 | 5.52 | 16.91 | 32.87 | 39.78 | 51.35 | 61.81 | a | 67.02 | 68.39 | 55.75 | 48.69 | 23.75 | 12.31 | 40.35 | ||||||||||||
1939 | 11.90 | 2.16 | 19.63 | a | 36.68 | 55.13 | 62.67 | 68.82 | 66.11 | 56.43 | 41.06 | 32.00 | 23.63 | 39.69 | ||||||||||||
1940 | 5.06 | 15.93 | a | 19.75 | a | 37.98 | a | 50.16 | 59.27 | 67.11 | 62.90 | a | 59.30 | 46.10 | a | 22.40 | 14.05 | 38.33 | ||||||||
1941 | 9.69 | 10.93 | 22.92 | 46.55 | 57.81 | 63.33 | 69.34 | 63.97 | 57.05 | 44.60 | 28.50 | 18.44 | 41.09 | |||||||||||||
1942 | 13.19 | 12.79 | 29.06 | 47.00 | 50.32 | 60.82 | 64.74 | 65.05 | 52.58 | 45.00 | 26.60 | 8.45 | 39.63 | |||||||||||||
1943 | 1.15 | 12.71 | 16.23 | 38.67 | 50.95 | 62.87 | 70.76 | 65.52 | 52.83 | 45.76 | 23.34 | a | 14.47 | 37.94 | ||||||||||||
1944 | 18.69 | 10.79 | 21.53 | 39.37 | 56.06 | 63.28 | 66.52 | 65.44 | 56.02 | 45.81 | 33.22 | 12.52 | a | 40.77 | ||||||||||||
1945 | 7.29 | 13.41 | 34.66 | 36.95 | 46.97 | 57.20 | 64.61 | 64.53 | 52.77 | 42.11 | 24.75 | 8.73 | 37.83 | |||||||||||||
1946 | 8.34 | 7.70 | 35.74 | 42.38 | a | 50.85 | 61.73 | 68.00 | 63.60 | 54.98 | 43.71 | 27.03 | 11.27 | 39.61 | ||||||||||||
1947 | 11.29 | 7.73 | 22.32 | 35.62 | 48.37 | 58.90 | 68.66 | 69.82 | 54.68 | 52.53 | 22.71 | a | 12.58 | 38.77 | ||||||||||||
1948 | 4.22 | a | 7.86 | a | 24.10 | a | 42.97 | 52.84 | 60.88 | 67.61 | 66.95 | 60.58 | 46.84 | 29.50 | 12.97 | 39.78 | ||||||||||
1949 | 10.45 | 7.39 | 21.02 | 43.52 | 54.98 | 65.02 | a | 68.08 | 68.16 | 53.57 | 44.94 | 29.78 | a | 11.95 | 39.90 | |||||||||||
1950 | -1.13 | 11.61 | 17.90 | 30.15 | 49.50 | 60.90 | 64.18 | 59.28 | a | 56.40 | a | 46.56 | 22.43 | a | 7.74 | 35.46 | ||||||||||
1951 | 5.98 | 14.11 | 19.89 | 38.50 | a | 56.82 | 60.17 | 66.26 | 60.68 | 51.17 | 42.77 | 20.88 | 10.45 | a | 37.31 | |||||||||||
1952 | 7.67 | a | 20.62 | 23.42 | a | 46.13 | 53.84 | 65.13 | 67.71 | 64.15 | 57.60 | 39.56 | 30.72 | 20.84 | 41.45 | |||||||||||
1953 | 12.39 | 14.16 | 27.19 | 37.80 | 52.32 | 63.78 | 66.69 | 68.00 | 55.35 | 51.92 | 34.02 | 14.98 | 41.55 | |||||||||||||
1954 | 3.73 | 25.39 | 22.19 | 38.63 | 47.53 | 64.93 | b | 67.90 | 64.73 | 54.92 | 43.55 | 32.78 | 18.92 | 40.43 | ||||||||||||
1955 | 9.58 | 11.56 | d | 19.44 | f | 48.17 | 57.50 | 65.32 | 72.06 | 69.81 | 56.02 | 47.05 | 21.10 | 8.03 | 42.38 | a | ||||||||||
1956 | 14.60 | 12.10 | 21.15 | 36.37 | 51.23 | 67.03 | 64.82 | 64.33 | a | 53.05 | 51.79 | 29.47 | 14.58 | 40.04 | ||||||||||||
1957 | 0.15 | 12.16 | 24.94 | 40.35 | 53.71 | 61.93 | 70.82 | 65.71 | 55.07 | 46.06 | 28.68 | 17.18 | 39.73 | |||||||||||||
1958 | 16.02 | 12.25 | 30.18 | 44.80 | 54.56 | 57.42 | 66.05 | 65.37 | 57.23 | 47.53 | 29.95 | 4.23 | 40.47 | |||||||||||||
1959 | 1.73 | 11.05 | 28.32 | 40.57 | 55.52 | 65.13 | 69.03 | 69.15 | 57.08 | 40.84 | 18.45 | 23.18 | 40.00 | |||||||||||||
1960 | 10.95 | 15.38 | 19.44 | 40.13 | 54.35 | 61.73 | 68.15 | 68.81 | 56.98 | 46.06 | 30.88 | 10.63 | 40.29 | |||||||||||||
1961 | 6.53 | 21.82 | 32.89 | 36.90 | 52.87 | 66.30 | 68.71 | 69.95 | 56.88 | 46.79 | 28.78 | 13.92 | 41.86 | |||||||||||||
1962 | 3.48 | 9.55 | 28.58 | 37.78 | 55.40 | 62.66 | a | 64.77 | 65.68 | 54.55 | 46.38 | c | 32.12 | 14.02 | c | 39.58 | ||||||||||
1963 | -1.83 | d | 4.93 | e | 26.85 | 41.33 | 49.19 | 62.98 | 67.29 | 62.10 | 57.12 | 53.21 | 32.48 | 6.12 | a | 38.48 | ||||||||||
1964 | 13.78 | a | 13.22 | 19.39 | 40.05 | 55.29 | 59.59 | a | 67.15 | 59.18 | 51.93 | 42.58 | 29.28 | 5.69 | 38.09 | |||||||||||
1965 | 1.55 | 2.09 | 14.45 | a | 37.95 | 53.42 | 59.05 | 62.29 | 60.98 | 46.03 | a | 44.35 | 25.67 | 19.24 | 35.59 | |||||||||||
1966 | -4.11 | 10.18 | 27.26 | 34.75 | 46.65 | 62.50 | 68.05 | a | 61.55 | 53.63 | 41.56 | 23.27 | 10.95 | 36.35 | ||||||||||||
1967 | 7.79 | 0.61 | 23.74 | 37.00 | 45.90 | 59.98 | 63.00 | 59.90 | 55.12 | 40.82 | 23.65 | 13.35 | 35.91 | |||||||||||||
1968 | 6.50 | 7.72 | 29.63 | 39.83 | 49.08 | 58.90 | 63.55 | a | 61.85 | 55.35 | 45.77 | 27.75 | 10.03 | 38.00 | ||||||||||||
1969 | 5.26 | 13.96 | 20.45 | 42.12 | a | 52.13 | 53.97 | 63.94 | 66.16 | 54.97 | 39.10 | 27.08 | 16.16 | 37.94 | ||||||||||||
1970 | 0.94 | 8.50 | 19.02 | 38.20 | 48.98 | 62.98 | 68.68 | 64.58 | 55.03 | 44.37 | 25.35 | 9.05 | a | 37.14 | ||||||||||||
1971 | -2.60 | 11.54 | 20.90 | 38.73 | 49.50 | 63.73 | 61.29 | 60.87 | 56.30 | 47.30 | a | 25.40 | 11.42 | 37.03 | ||||||||||||
1972 | -2.60 | 4.91 | 18.25 | a | 35.40 | 56.50 | 61.28 | 62.74 | 62.93 | a | 50.90 | 39.85 | 25.25 | 4.98 | 35.03 | |||||||||||
1973 | 11.34 | 13.71 | 34.40 | 38.91 | a | 51.29 | 62.21 | a | 65.82 | 66.79 | 53.73 | 48.39 | 27.40 | 12.35 | 40.53 | |||||||||||
1974 | 4.32 | 10.50 | 20.79 | 40.07 | 47.16 | 59.98 | a | 69.84 | 61.42 | a | 50.48 | 45.30 | a | 28.70 | 19.20 | a | 38.15 | |||||||||
1975 | 7.60 | 11.68 | 18.37 | 34.52 | 56.40 | a | 61.48 | 69.84 | 63.66 | 51.57 | 45.27 | a | 29.40 | 9.87 | a | 38.30 | ||||||||||
1976 | 3.87 | a | 19.74 | 21.78 | a | 44.53 | 53.00 | 64.83 | 67.05 | 66.77 | a | 55.18 | 37.03 | 19.40 | a | 1.15 | a | 37.86 | ||||||||
1977 | -2.87 | 16.02 | a | 33.48 | 45.36 | b | 61.88 | c | 62.23 | 67.10 | ----- | z | 53.72 | 43.97 | b | ----- | z | 9.08 | 39.00 | b | ||||||
1978 | 1.89 | 6.76 | c | ----- | z | ----- | z | 59.96 | s | 59.68 | e | 64.66 | 60.81 | w | ----- | z | ----- | z | ----- | z | ----- | z | 33.25 | h | ||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.94 | 55.64 | a | 40.35 | 25.47 | 19.15 | 40.31 | g | ||||
1980 | 7.50 | 10.00 | a | 18.45 | a | 42.77 | b | 57.00 | 61.20 | c | 66.35 | 64.02 | ----- | z | 36.25 | i | 28.48 | a | 9.43 | d | 36.52 | b | ||||
1981 | 10.05 | a | 17.54 | b | 28.48 | a | 40.04 | r | ----- | z | ----- | z | 66.31 | g | 64.66 | 51.83 | 40.50 | q | 33.90 | a | 12.52 | c | 31.28 | e | ||
1982 | -8.35 | e | 5.32 | c | 19.89 | 35.12 | b | 54.97 | b | 55.00 | c | 66.31 | 61.55 | 55.07 | c | 45.41 | b | 24.35 | c | 18.00 | e | 36.05 | ||||
1983 | 10.00 | b | 17.35 | a | 27.22 | b | 37.18 | 47.28 | b | 60.91 | a | 70.79 | c | 69.33 | b | 56.12 | a | 40.76 | n | ----- | z | -7.54 | q | 44.02 | c | |
1984 | 1.16 | c | 22.81 | b | 21.47 | a | 42.94 | e | 50.85 | h | 62.36 | b | 63.39 | c | 66.73 | c | 50.60 | 46.38 | g | 24.33 | g | 10.69 | j | 41.43 | d | |
1985 | 6.50 | l | 6.92 | c | 33.00 | c | 46.78 | e | 56.23 | c | 55.43 | 63.34 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.62 | f | |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | 13.03 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 13.03 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 5.55 | 11.28 | 23.83 | 39.83 | 52.70 | 61.79 | 67.15 | 64.60 | 54.99 | 44.16 | 26.92 | 12.28 | 38.59 | |||||||||||||
S.D. | 6.20 | 5.93 | 5.17 | 3.90 | 3.53 | 3.12 | 2.74 | 2.79 | 2.76 | 4.22 | 4.50 | 5.66 | 1.67 | |||||||||||||
SKEW | -0.17 | -0.05 | 0.40 | 0.24 | 0.03 | -0.14 | 0.22 | 0.05 | -0.44 | -0.24 | -0.08 | 0.12 | -0.15 | |||||||||||||
MAX | 18.69 | 25.39 | 35.74 | 50.12 | 61.88 | 68.54 | 74.61 | 70.05 | 61.43 | 53.21 | 34.88 | 23.84 | 41.86 | |||||||||||||
MIN | -10.35 | -4.68 | 13.67 | 30.15 | 45.90 | 53.97 | 61.29 | 59.18 | 46.03 | 33.13 | 17.46 | 1.15 | 35.03 | |||||||||||||
YRS | 73 | 74 | 72 | 72 | 71 | 73 | 73 | 71 | 73 | 69 | 71 | 71 | 62 |