YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1902 | ----- | z | ----- | z | ----- | z | 48.80 | 65.19 | 71.50 | 81.52 | 76.19 | 64.50 | 54.90 | 32.32 | b | 15.16 | 56.68 | c | ||||||||
1903 | 14.40 | a | 12.18 | 29.42 | 53.30 | 69.26 | 75.59 | a | 79.26 | 73.74 | 64.53 | 57.23 | 32.41 | a | 16.45 | 48.15 | ||||||||||
1904 | 9.58 | 5.87 | f | 27.33 | a | 44.87 | 67.43 | a | 72.63 | 75.87 | 75.48 | 65.43 | 56.00 | e | 48.25 | b | 21.10 | 51.27 | a | |||||||
1905 | 11.00 | 18.25 | 38.26 | 52.47 | 63.17 | b | 69.87 | 77.52 | 78.42 | 74.59 | c | 50.17 | a | 39.00 | 22.24 | b | 49.58 | |||||||||
1906 | 21.87 | a | 17.81 | b | 28.68 | 59.53 | 62.68 | 73.67 | 78.13 | 78.42 | 75.43 | 53.81 | 33.77 | 15.48 | 49.94 | |||||||||||
1907 | 5.28 | b | 16.12 | d | 29.94 | 39.62 | a | 56.29 | 74.40 | 77.77 | 75.17 | b | 64.57 | 55.68 | 38.97 | 28.06 | 46.82 | |||||||||
1908 | 23.65 | 20.90 | 25.87 | 55.80 | 64.19 | 73.77 | 80.68 | 78.10 | 74.20 | 54.16 | 38.60 | 20.74 | 50.89 | |||||||||||||
1909 | 13.39 | 15.18 | f | 30.19 | 43.20 | t | ----- | z | 76.56 | e | 79.48 | 80.74 | 72.77 | 54.30 | a | 38.13 | 11.90 | a | 50.83 | c | ||||||
1910 | 17.13 | 13.75 | 50.35 | 59.47 | 64.19 | 82.97 | 84.19 | 78.58 | 69.30 | 61.32 | 29.00 | 17.90 | 52.35 | |||||||||||||
1911 | 5.37 | a | 17.96 | 37.00 | 53.30 | 71.06 | 79.55 | a | 77.74 | 75.42 | 65.43 | 52.65 | 26.37 | 19.81 | 48.47 | |||||||||||
1912 | -1.52 | 17.28 | 28.23 | 58.03 | 68.52 | 77.13 | 78.23 | 73.23 | 64.67 | 57.74 | 39.47 | 25.74 | 48.89 | |||||||||||||
1913 | 8.52 | 14.82 | 25.84 | 59.13 | 63.00 | 81.17 | 77.61 | 82.03 | a | 71.33 | 50.71 | 42.21 | a | 31.55 | 50.66 | |||||||||||
1914 | 21.87 | 5.79 | 33.68 | 48.77 | 69.90 | 74.83 | 83.97 | 75.52 | 73.17 | 64.00 | 37.67 | 14.52 | 50.31 | |||||||||||||
1915 | 11.16 | 25.46 | 33.90 | 62.50 | 64.48 | 69.27 | 74.26 | 78.39 | 67.60 | 60.73 | a | 34.47 | 21.61 | 50.32 | ||||||||||||
1916 | 3.42 | 11.24 | 25.65 | 47.27 | 63.19 | 69.77 | 84.16 | 77.55 | 65.87 | 48.68 | 38.20 | 10.23 | a | 45.43 | ||||||||||||
1917 | 5.29 | 4.64 | 30.26 | 46.83 | 67.71 | 73.70 | 81.68 | 78.68 | 69.60 | 42.39 | 41.83 | 7.97 | 45.88 | |||||||||||||
1918 | 5.32 | 19.79 | 48.06 | 56.20 | 66.35 | 74.97 | 77.65 | 80.65 | 64.10 | 57.23 | 38.53 | 21.55 | 50.87 | |||||||||||||
1919 | 21.16 | 15.11 | a | 27.35 | 53.13 | 70.06 | 77.40 | 82.13 | 78.39 | 70.13 | 45.77 | 22.90 | 10.87 | 47.87 | ||||||||||||
1920 | 5.35 | 17.07 | a | 31.68 | 42.87 | 69.52 | 75.53 | 80.26 | 82.97 | 73.50 | 63.52 | 35.27 | 20.87 | 49.87 | ||||||||||||
1921 | 22.29 | 23.39 | 31.52 | 54.53 | 70.81 | 79.43 | 84.97 | 79.87 | 68.60 | 57.74 | 26.93 | 20.87 | 51.75 | |||||||||||||
1922 | 13.71 | 12.68 | 34.32 | 53.37 | 71.35 | 76.40 | 77.97 | 82.71 | 71.13 | 59.61 | 38.50 | 13.65 | 50.45 | |||||||||||||
1923 | 16.68 | 13.21 | 24.32 | 46.47 | 68.16 | 79.97 | 81.39 | 73.52 | 71.17 | 56.39 | 44.13 | 30.00 | a | 50.45 | ||||||||||||
1924 | 7.58 | 25.90 | 35.00 | 47.03 | 57.10 | 72.53 | 76.55 | 74.87 | 65.33 | 63.16 | 33.57 | 9.65 | 47.36 | |||||||||||||
1925 | 15.45 | 21.19 | a | 35.68 | 60.60 | 68.26 | 71.63 | 77.45 | 80.84 | 67.93 | 41.65 | 35.57 | 19.29 | 49.63 | ||||||||||||
1926 | 22.74 | 26.39 | 32.35 | 55.47 | 73.32 | 70.27 | 79.80 | a | 77.71 | 65.20 | 51.94 | 27.13 | 15.03 | 49.78 | ||||||||||||
1927 | 15.16 | 20.14 | 37.03 | 49.73 | 58.10 | 72.93 | 77.13 | 76.63 | a | 70.23 | 58.84 | 27.57 | 6.43 | a | 47.49 | |||||||||||
1928 | 18.71 | 25.41 | 35.90 | 47.67 | 72.97 | 71.13 | 78.68 | 77.35 | 66.50 | 55.71 | 40.43 | 28.13 | 51.55 | |||||||||||||
1929 | 0.10 | 11.68 | 38.81 | 53.00 | 64.19 | 76.73 | 82.74 | 82.00 | 65.93 | a | 58.47 | a | 31.53 | 16.35 | 48.46 | |||||||||||
1930 | 9.16 | f | 25.30 | a | 31.10 | 56.70 | 63.73 | a | 76.70 | 83.84 | 84.39 | 69.96 | b | 51.06 | 37.37 | 24.39 | 54.96 | a | ||||||||
1931 | 22.71 | 32.68 | 35.19 | 56.90 | 65.00 | 78.53 | 83.32 | 79.32 | 75.00 | b | 59.60 | a | 41.23 | 25.71 | 54.60 | |||||||||||
1932 | 18.68 | 19.10 | 25.29 | 51.93 | 70.03 | 80.93 | 82.23 | 82.50 | a | 70.90 | 49.58 | 30.20 | 17.94 | 49.94 | ||||||||||||
1933 | 19.77 | 18.38 | d | 34.80 | a | 50.13 | 70.29 | 85.20 | 85.97 | 82.58 | 73.17 | 51.26 | 30.40 | 14.35 | 51.36 | |||||||||||
1934 | 21.48 | 20.39 | 31.90 | 52.00 | 77.26 | 74.97 | 81.29 | 79.87 | 65.31 | a | 59.13 | 41.23 | 17.63 | a | 51.87 | |||||||||||
1935 | 7.10 | 32.35 | e | 34.06 | 47.20 | 63.68 | 71.33 | 83.71 | 76.45 | 66.40 | 58.65 | 24.00 | 17.39 | 48.53 | ||||||||||||
1936 | 1.13 | -1.14 | 29.29 | 41.40 | 72.32 | 74.07 | b | 92.55 | 82.50 | a | 73.10 | a | 54.90 | 32.07 | 20.71 | 47.74 | ||||||||||
1937 | 0.94 | 13.86 | 28.87 | 45.80 | 68.10 | a | 73.77 | 79.38 | g | 82.71 | 69.55 | a | 52.94 | 34.23 | 18.65 | 44.49 | a | |||||||||
1938 | 10.85 | d | 19.26 | a | 45.42 | 53.90 | 61.31 | b | 73.53 | 79.07 | a | 82.55 | 74.83 | 64.93 | b | 32.47 | 21.90 | 51.67 | ||||||||
1939 | 18.45 | 8.92 | b | 30.81 | 52.00 | a | 76.23 | 74.67 | 86.71 | 84.42 | 70.93 | 49.86 | b | 45.17 | a | 33.48 | 52.64 | |||||||||
1940 | 13.06 | 23.64 | a | 28.10 | 46.41 | a | 68.13 | a | 75.60 | 83.48 | 76.42 | 74.62 | a | 61.65 | 30.37 | 24.60 | a | 50.51 | ||||||||
1941 | 18.37 | a | 17.82 | 31.13 | a | 56.03 | 70.74 | 75.67 | 82.81 | 78.71 | 66.57 | 56.77 | 37.67 | 29.45 | 51.81 | |||||||||||
1942 | 26.13 | a | 22.89 | 39.84 | 58.53 | 63.94 | 72.80 | 79.68 | 78.23 | 66.30 | 60.10 | a | 37.03 | 15.93 | a | 51.78 | ||||||||||
1943 | 6.35 | 21.93 | a | 24.03 | 55.20 | 64.48 | 73.87 | 84.13 | a | 79.81 | 66.90 | 61.97 | 32.93 | 25.23 | 49.74 | |||||||||||
1944 | 25.16 | 19.28 | 24.61 | 51.73 | 67.61 | 71.53 | 77.71 | 74.94 | 64.40 | 59.71 | 35.97 | 23.00 | 49.64 | |||||||||||||
1945 | 16.10 | 23.43 | 43.58 | 47.50 | 59.45 | 70.43 | 79.03 | 79.26 | 65.27 | 56.10 | 30.43 | 15.46 | e | 48.84 | ||||||||||||
1946 | 13.58 | 15.11 | 41.48 | 58.60 | 65.03 | 75.60 | 82.06 | 78.35 | 67.23 | 51.71 | 37.23 | 18.16 | 50.35 | |||||||||||||
1947 | 23.13 | 15.36 | 31.13 | 48.63 | 61.32 | 71.47 | 82.74 | 84.48 | 68.63 | 64.29 | 28.17 | 18.94 | 49.86 | |||||||||||||
1948 | 12.29 | 14.45 | 27.00 | 50.67 | 70.26 | 74.48 | a | 79.22 | d | 81.74 | 77.10 | a | 59.65 | h | 37.42 | f | 17.59 | d | 50.48 | b | ||||||
1949 | 10.97 | b | 11.89 | i | 28.42 | e | 62.08 | f | 69.85 | d | 76.48 | g | 83.04 | e | ----- | z | 66.67 | r | 55.68 | f | 42.59 | h | 18.74 | d | 42.20 | g |
1950 | 0.05 | i | 17.56 | l | 24.67 | j | ----- | z | 59.59 | b | 78.37 | 78.12 | e | 76.55 | 69.32 | e | 56.59 | b | ----- | z | ----- | z | 69.75 | f | ||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 87.71 | q | 77.82 | c | 64.44 | c | 57.60 | p | ----- | z | ----- | z | 71.13 | j |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | 70.81 | 78.90 | a | 80.55 | 79.97 | 74.33 | 55.77 | 40.67 | c | 25.58 | 63.32 | d | ||||||
1953 | 18.63 | a | 22.64 | 34.39 | 47.93 | a | 65.97 | a | 74.67 | 79.23 | 83.29 | 69.43 | 64.19 | 43.88 | d | 22.68 | 52.24 | |||||||||
1954 | 5.45 | 32.00 | 31.03 | 50.13 | 62.52 | 74.93 | 82.57 | a | 77.58 | 66.47 | 55.00 | 41.57 | 25.00 | 50.35 | ||||||||||||
1955 | 14.67 | a | 12.96 | 22.39 | 59.73 | 71.68 | 75.55 | a | 83.26 | 84.23 | a | 70.30 | 59.26 | 24.93 | 11.61 | 49.21 | ||||||||||
1956 | 14.35 | 13.69 | 25.80 | a | 39.90 | 64.97 | 79.90 | a | 76.32 | 78.42 | 65.40 | 63.58 | 37.97 | 22.63 | a | 48.58 | ||||||||||
1957 | 10.52 | 18.93 | 34.61 | 51.33 | 69.55 | 70.83 | a | 84.26 | 78.39 | 64.50 | 54.06 | 34.10 | 27.46 | c | 49.88 | |||||||||||
1958 | 25.52 | 21.25 | 39.77 | 57.03 | 72.65 | 70.80 | 77.10 | 80.29 | 71.27 | 59.16 | 35.67 | 13.77 | 52.02 | |||||||||||||
1959 | 6.71 | 15.25 | 34.90 | 52.70 | 66.16 | 78.13 | 81.84 | 81.45 | 67.80 | 46.90 | 25.97 | 29.26 | 48.92 | |||||||||||||
1960 | 16.42 | 19.59 | 25.32 | 49.63 | 69.74 | 74.53 | 84.00 | 82.74 | 72.03 | 57.61 | 36.27 | 17.29 | 50.43 | |||||||||||||
1961 | 15.00 | 24.00 | 39.42 | 47.30 | 69.74 | 84.07 | 81.42 | 87.65 | 67.03 | 57.13 | 37.13 | 16.00 | 52.16 | |||||||||||||
1962 | 10.52 | 12.64 | 28.87 | 47.23 | 63.74 | 75.80 | 77.55 | 81.35 | 67.27 | 60.87 | 38.07 | 23.45 | 48.95 | |||||||||||||
1963 | 9.00 | 19.00 | 42.45 | 53.97 | 66.06 | 79.55 | a | 82.90 | 81.06 | 75.50 | 69.29 | 41.83 | a | 12.87 | 52.79 | |||||||||||
1964 | 20.90 | 25.45 | 30.65 | 53.33 | 72.23 | 73.80 | 82.29 | 76.32 | 67.80 | 56.19 | 36.47 | 11.87 | 50.61 | |||||||||||||
1965 | 6.87 | 17.46 | 24.52 | 48.43 | 65.03 | 75.70 | 78.58 | 79.29 | 57.90 | 56.84 | 32.63 | 26.20 | a | 47.45 | ||||||||||||
1966 | -0.45 | 12.18 | 34.48 | 44.47 | 62.81 | 76.60 | 81.55 | 77.32 | 72.13 | 55.58 | 29.87 | 17.74 | 47.02 | |||||||||||||
1967 | 16.29 | 11.93 | 30.74 | 45.33 | 61.35 | 74.43 | 81.52 | 81.00 | 73.67 | 53.35 | 35.67 | 20.94 | 48.85 | |||||||||||||
1968 | 13.19 | 15.07 | 39.19 | 56.00 | 65.84 | 73.27 | 78.77 | 75.48 | 69.13 | 55.74 | 36.40 | 16.13 | 49.52 | |||||||||||||
1969 | 5.39 | 17.64 | 23.39 | 55.07 | 69.77 | 67.93 | 79.00 | 86.06 | 70.47 | 47.13 | 37.30 | 25.45 | i | 50.83 | a | |||||||||||
1970 | 7.74 | 18.64 | 23.65 | 43.80 | 62.35 | 80.33 | 83.97 | 82.52 | 70.73 | 55.16 | 33.63 | 15.45 | 48.17 | |||||||||||||
1971 | 4.35 | 20.04 | 31.71 | 52.13 | 68.32 | 78.58 | f | 76.03 | a | 81.58 | 70.30 | 55.48 | 33.10 | 18.87 | 46.54 | a | ||||||||||
1972 | 5.38 | g | 12.38 | 30.19 | 47.87 | 72.48 | 79.67 | 77.52 | 82.06 | 66.55 | a | 53.76 | b | 32.27 | 12.90 | 51.60 | a | |||||||||
1973 | 19.74 | 25.07 | 43.48 | 54.80 | 69.50 | a | 78.33 | 79.97 | b | 83.71 | 67.30 | 59.53 | a | 31.70 | 16.23 | 52.45 | ||||||||||
1974 | 7.45 | 19.46 | 28.00 | 48.87 | 60.63 | a | 78.00 | 84.63 | a | 74.39 | 66.43 | 58.58 | 33.95 | i | 27.30 | a | 50.34 | a | ||||||||
1975 | 18.13 | 17.11 | a | 25.17 | a | 43.00 | 69.13 | 74.70 | 81.90 | 76.94 | 66.90 | 58.87 | 38.67 | 21.16 | 49.31 | |||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.05 | 18.14 | 32.24 | 51.32 | 66.83 | 75.34 | 80.78 | 79.45 | 68.95 | 56.26 | 35.17 | 19.50 | 49.88 | |||||||||||||
S.D. | 7.15 | 6.14 | 6.20 | 5.26 | 4.39 | 3.58 | 3.13 | 3.19 | 3.69 | 5.20 | 5.34 | 5.86 | 1.81 | |||||||||||||
SKEW | -0.09 | -0.15 | 0.75 | -0.09 | -0.16 | 0.43 | 0.63 | 0.14 | 0.05 | -0.41 | -0.16 | 0.16 | -0.08 | |||||||||||||
MAX | 26.13 | 32.68 | 50.35 | 62.50 | 77.26 | 85.20 | 92.55 | 87.65 | 77.10 | 69.29 | 48.25 | 33.48 | 54.60 | |||||||||||||
MIN | -1.52 | -1.14 | 22.39 | 39.62 | 56.29 | 67.93 | 74.26 | 73.23 | 57.90 | 41.65 | 22.90 | 6.43 | 45.43 | |||||||||||||
YRS | 68 | 67 | 70 | 69 | 72 | 71 | 72 | 73 | 73 | 71 | 69 | 71 | 60 |