YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.83 | a | 56.50 | c | 41.97 | 26.23 | 47.38 | h | ||
1903 | 22.00 | 25.04 | a | 42.87 | 55.52 | a | 69.17 | a | 76.06 | m | 78.87 | 72.14 | b | 66.42 | f | ----- | z | ----- | z | ----- | z | 52.23 | e | |||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | 65.85 | d | 76.42 | k | 76.32 | 75.00 | 66.59 | a | 59.25 | c | 44.25 | b | 25.07 | b | 58.90 | e | ||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.66 | a | 79.81 | 80.39 | c | 73.14 | b | 54.80 | a | ----- | z | ----- | z | 73.56 | g | |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | 20.65 | b | 35.57 | c | 57.93 | b | 64.67 | a | 82.03 | a | 78.41 | b | 80.03 | b | 71.67 | 55.48 | 46.57 | 38.42 | 57.40 | a | ||||
1914 | 29.55 | i | 22.46 | b | 38.13 | 52.00 | c | 71.00 | g | 76.76 | a | 87.03 | b | 78.81 | d | 71.75 | b | 65.03 | b | 45.20 | j | 24.08 | g | 61.50 | d | |
1915 | 24.10 | j | 33.61 | e | 37.60 | a | 65.20 | 62.10 | a | 72.45 | a | 77.03 | 76.93 | b | 71.97 | ----- | z | 40.86 | b | 29.32 | 56.71 | b | ||||
1916 | 26.17 | b | 22.78 | b | 35.97 | b | 52.50 | h | 66.04 | c | 71.57 | b | 86.90 | b | 84.97 | a | 69.79 | f | 59.00 | e | 38.61 | g | 25.06 | 53.16 | c | |
1917 | 20.35 | 25.24 | g | 36.90 | 50.23 | 63.06 | 72.10 | 81.81 | 76.52 | 70.55 | a | 44.94 | 45.27 | 19.45 | 52.83 | a | ||||||||||
1918 | 13.35 | 26.18 | 47.58 | 54.90 | 70.19 | 76.40 | 80.29 | 80.35 | 64.57 | 57.94 | 42.97 | a | 31.28 | b | 53.83 | |||||||||||
1919 | 30.63 | a | 27.25 | 41.93 | b | 53.47 | 68.35 | 80.00 | c | 83.32 | 77.69 | b | 71.83 | a | 53.86 | b | ----- | z | 19.70 | d | 55.28 | a | ||||
1920 | 19.00 | 27.00 | d | ----- | z | ----- | z | 68.80 | a | 75.24 | e | 75.47 | a | 77.55 | 71.43 | ----- | z | ----- | z | ----- | z | 59.21 | e | |||
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 80.65 | 85.34 | a | 85.40 | a | 71.16 | 61.13 | 59.77 | a | 42.20 | 25.10 | 63.84 | d | |||||
1935 | 23.00 | b | 29.96 | 38.87 | a | 54.31 | a | 67.39 | ----- | z | 88.87 | a | 80.10 | 70.03 | a | 56.52 | 34.96 | b | 26.58 | 51.87 | a | |||||
1936 | 21.04 | c | 14.64 | a | 37.47 | a | 46.77 | 75.33 | a | 78.46 | d | 89.46 | c | 82.84 | 73.70 | 52.45 | 35.73 | 31.32 | 53.27 | |||||||
1937 | 22.77 | a | 25.75 | 34.06 | 48.53 | 72.23 | a | 76.13 | 74.48 | b | 72.83 | a | 63.42 | d | 50.73 | a | 35.83 | 24.68 | c | 50.12 | ||||||
1938 | 21.33 | a | 29.00 | a | 41.58 | e | 52.93 | a | 64.65 | 74.37 | 80.73 | a | 81.84 | 68.72 | a | 61.52 | b | 39.45 | a | 27.68 | 53.65 | |||||
1939 | 28.33 | a | 24.75 | 38.40 | a | 51.23 | 76.23 | 80.07 | 85.94 | 80.82 | c | 72.80 | 55.97 | 43.70 | 35.74 | 56.16 | ||||||||||
1940 | 19.00 | b | 30.15 | c | 33.29 | 50.72 | a | 64.90 | 77.18 | b | 84.77 | 76.70 | a | 72.83 | a | 59.13 | 37.52 | a | 30.65 | 53.07 | ||||||
1941 | 26.16 | 22.20 | r | 35.03 | 59.87 | 69.65 | 75.87 | 78.74 | 75.61 | 69.47 | 55.00 | 41.90 | 32.65 | 56.36 | a | |||||||||||
1942 | 24.77 | 23.25 | 36.77 | 61.24 | a | 64.06 | 73.14 | a | 76.50 | a | 74.45 | 63.20 | ----- | z | 38.54 | b | 20.70 | a | 50.60 | a | ||||||
1943 | 19.23 | a | 27.68 | 30.35 | 48.63 | 63.68 | 76.57 | 81.58 | 77.16 | 63.43 | 58.35 | 34.20 | 30.21 | b | 50.92 | |||||||||||
1944 | 33.68 | 29.33 | b | 32.32 | 50.88 | d | 69.80 | a | 76.70 | 77.70 | a | 79.90 | 68.15 | c | 57.97 | a | 42.97 | 23.55 | b | 53.58 | ||||||
1945 | 18.81 | 26.26 | a | 47.22 | d | 52.03 | 59.67 | a | 68.76 | a | 74.87 | 75.30 | a | 66.66 | a | 56.97 | 38.29 | b | 21.17 | a | 50.50 | |||||
1946 | 25.67 | a | 25.56 | a | 50.27 | a | 56.55 | a | 65.14 | b | 73.60 | 78.90 | b | 74.48 | 68.62 | a | 60.53 | a | 40.89 | b | 29.79 | c | 54.17 | |||
1947 | 27.27 | a | 21.04 | a | 33.04 | d | 46.78 | c | 60.58 | e | 72.14 | a | 79.79 | b | 84.71 | 71.33 | c | 66.70 | d | 34.86 | b | 26.24 | b | 52.04 | ||
1948 | 20.00 | 24.79 | 36.45 | 58.23 | 67.40 | a | 75.20 | 80.03 | 78.84 | 74.40 | 58.07 | a | 40.73 | 26.03 | a | 53.35 | ||||||||||
1949 | 24.61 | 25.26 | a | 33.13 | 56.03 | 67.93 | a | 78.47 | 78.61 | 77.48 | 64.70 | 61.16 | ----- | z | 27.90 | a | 54.12 | a | ||||||||
1950 | 23.30 | a | 26.18 | 31.42 | 40.63 | 65.00 | 74.43 | 74.65 | 73.10 | 68.17 | 60.90 | b | 34.43 | b | 21.94 | 49.51 | ||||||||||
1951 | 21.81 | 26.39 | 32.87 | a | 49.70 | 71.45 | 71.27 | 77.32 | 71.71 | 64.43 | 56.45 | 32.93 | a | 25.17 | b | 50.13 | ||||||||||
1952 | 25.65 | 32.00 | 34.55 | 56.53 | 66.90 | 76.27 | 78.87 | 74.87 | 71.41 | a | 53.71 | 43.63 | 31.60 | a | 53.83 | |||||||||||
1953 | 27.03 | 27.39 | 37.29 | 48.90 | 68.90 | 77.37 | 77.84 | 77.10 | 69.07 | 66.87 | 48.57 | 30.03 | a | 54.70 | ||||||||||||
1954 | 22.71 | 36.93 | 34.65 | 55.70 | 59.16 | 77.77 | 79.48 | 75.29 | 65.43 | 56.20 | a | 43.13 | 28.61 | 52.92 | ||||||||||||
1955 | 22.97 | 25.61 | 35.23 | a | 60.34 | a | 73.00 | 74.67 | 83.74 | 81.00 | a | 69.53 | 59.39 | 35.48 | a | 22.50 | a | 53.62 | ||||||||
1956 | 26.74 | 27.10 | 34.37 | a | 49.27 | 66.55 | b | 77.23 | 74.10 | 75.39 | 66.47 | 66.19 | 39.13 | 29.87 | a | 52.70 | ||||||||||
1957 | 17.50 | a | 29.39 | 39.03 | 54.70 | 66.90 | 74.43 | 80.65 | 76.32 | 67.13 | 57.16 | 38.13 | 29.00 | 52.53 | ||||||||||||
1958 | 27.19 | 24.36 | 38.42 | 57.23 | 68.23 | a | 70.73 | 76.29 | 76.61 | 68.77 | 58.50 | a | 42.67 | 20.48 | b | 52.46 | ||||||||||
1959 | 18.81 | d | 25.32 | 38.45 | b | 53.77 | 71.77 | 76.80 | 78.39 | 78.87 | 70.07 | 51.06 | 31.73 | 33.10 | 52.35 | |||||||||||
1960 | 24.29 | 28.31 | 31.61 | 54.37 | 64.33 | a | 72.77 | 78.39 | 78.00 | 69.00 | 57.32 | 43.27 | 25.81 | 52.29 | ||||||||||||
1961 | 23.97 | 34.25 | 41.96 | e | 49.73 | 67.06 | 79.50 | 80.90 | 80.45 | 68.87 | 60.74 | 39.03 | 25.65 | 54.34 | ||||||||||||
1962 | 18.87 | 23.14 | 38.77 | 53.23 | 69.81 | 75.83 | 78.35 | 79.32 | 65.70 | 59.55 | 40.67 | 25.84 | 52.42 | |||||||||||||
1963 | 12.87 | 21.29 | 42.29 | 59.43 | 66.65 | 80.50 | 84.39 | 78.42 | 71.00 | 68.97 | 46.93 | 20.94 | 54.47 | |||||||||||||
1964 | 29.17 | a | 31.34 | 35.74 | 56.37 | 73.29 | 77.77 | 84.10 | 74.80 | a | 66.17 | 57.58 | 44.93 | 23.58 | 54.57 | |||||||||||
1965 | 21.84 | 25.61 | 31.45 | 49.17 | 72.77 | 76.10 | 78.94 | 75.77 | 62.31 | a | 59.60 | a | 40.20 | 31.90 | 52.14 | |||||||||||
1966 | 19.39 | 27.82 | 41.71 | 49.77 | 63.77 | a | 78.80 | 84.61 | 74.77 | 68.67 | 57.32 | 38.17 | 26.97 | 52.65 | ||||||||||||
1967 | 26.29 | 22.07 | 39.26 | 54.17 | 63.61 | 75.77 | 78.19 | 75.52 | 69.37 | 54.90 | 35.77 | 29.06 | 52.00 | |||||||||||||
1968 | 24.00 | 27.14 | 48.52 | 58.73 | 64.52 | 75.27 | 79.13 | 79.35 | 68.37 | 58.84 | 39.30 | 25.94 | 54.09 | |||||||||||||
1969 | 22.68 | 29.93 | 36.42 | 58.50 | 69.45 | 67.43 | 79.74 | 82.58 | 70.07 | 53.00 | 41.07 | 27.68 | 53.21 | |||||||||||||
1970 | 18.00 | 28.68 | 36.65 | 56.20 | 67.90 | 79.30 | 83.68 | 80.13 | 69.73 | 58.84 | 38.80 | 27.06 | 53.75 | |||||||||||||
1971 | 17.06 | 27.25 | 34.61 | 55.30 | 65.61 | 79.93 | 77.42 | 76.68 | 69.93 | 62.23 | 39.93 | 28.29 | 52.85 | |||||||||||||
1972 | 20.45 | 23.66 | 34.84 | 49.13 | 73.32 | 76.43 | 77.45 | 76.97 | 67.17 | 52.74 | 36.47 | 21.73 | a | 50.86 | ||||||||||||
1973 | 28.90 | 29.52 | a | 46.19 | 52.33 | 61.48 | 77.30 | 79.19 | 78.10 | 65.90 | 61.28 | b | 38.23 | 24.61 | 53.59 | |||||||||||
1974 | 20.97 | 24.11 | 34.94 | 52.20 | 60.42 | 70.67 | 80.55 | 75.13 | 61.80 | 54.55 | 40.97 | 31.32 | 50.63 | |||||||||||||
1975 | 23.53 | a | 25.07 | 32.29 | 45.90 | 70.39 | 72.00 | 80.61 | 76.94 | 62.27 | 59.19 | 45.43 | 25.90 | 51.63 | ||||||||||||
1976 | 18.53 | a | 32.26 | b | 35.45 | b | 55.33 | 63.74 | 78.47 | 79.13 | 73.71 | 62.50 | 47.42 | 28.97 | a | 14.79 | b | 49.19 | ||||||||
1977 | 12.33 | a | 31.27 | b | 45.58 | 57.93 | 77.35 | 73.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.60 | f | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.53 | 26.72 | 37.63 | 53.57 | 67.56 | 75.89 | 80.14 | 77.44 | 68.12 | 57.81 | 39.83 | 26.74 | 52.67 | |||||||||||||
S.D. | 4.45 | 3.91 | 4.77 | 4.58 | 4.56 | 3.42 | 3.63 | 3.10 | 3.41 | 4.57 | 4.18 | 4.44 | 1.55 | |||||||||||||
SKEW | -0.06 | -0.08 | 0.89 | -0.13 | 0.53 | -0.05 | 0.70 | 0.29 | -0.29 | -0.09 | -0.25 | -0.03 | -0.39 | |||||||||||||
MAX | 33.68 | 36.93 | 50.27 | 65.20 | 80.65 | 85.34 | 89.46 | 84.97 | 74.40 | 68.97 | 48.57 | 38.42 | 56.16 | |||||||||||||
MIN | 12.33 | 14.64 | 30.35 | 40.63 | 59.16 | 67.43 | 74.10 | 71.16 | 61.13 | 44.94 | 28.97 | 14.79 | 49.19 | |||||||||||||
YRS | 49 | 50 | 51 | 50 | 53 | 52 | 54 | 54 | 53 | 51 | 48 | 51 | 39 |