YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1894 | 29.80 | u | 22.90 | d | 44.23 | 56.10 | ----- | z | 74.02 | 77.79 | 75.63 | 67.35 | 58.21 | 45.53 | 33.82 | 55.56 | b | |||||||||
1895 | 28.87 | 26.32 | 42.63 | 55.73 | 64.16 | 71.00 | 73.37 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.73 | e | |||||||
1896 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | 36.39 | f | 41.85 | a | 52.05 | 57.00 | 71.57 | 79.40 | a | 73.65 | a | 67.95 | 50.81 | 43.54 | g | 26.79 | b | 57.90 | c | |||||
1918 | 25.38 | b | 38.88 | 48.27 | 48.20 | 66.10 | 77.10 | 77.11 | 79.40 | 64.33 | 59.13 | 38.10 | 31.23 | 54.44 | ||||||||||||
1919 | 21.31 | b | 25.55 | 43.34 | 51.98 | 61.87 | 69.12 | 77.94 | 78.02 | 72.52 | 53.10 | 39.00 | 30.21 | 52.00 | ||||||||||||
1920 | 34.34 | 36.24 | 44.11 | 48.83 | 62.11 | 72.45 | 77.84 | 72.02 | 67.97 | 58.55 | 39.87 | 35.68 | 54.17 | |||||||||||||
1921 | 36.52 | 39.25 | 49.97 | 52.97 | 64.35 | 72.17 | 78.00 | 77.23 | 73.12 | 60.21 | 44.65 | 32.60 | a | 56.75 | ||||||||||||
1922 | 29.16 | 35.48 | 41.56 | 52.07 | 62.92 | 74.33 | 78.69 | 79.90 | 72.88 | 57.48 | 43.67 | 35.24 | 55.28 | |||||||||||||
1923 | 38.61 | 31.98 | 40.19 | 54.53 | 60.29 | 71.58 | 77.74 | 77.35 | 67.65 | 49.82 | 42.93 | 32.29 | 53.75 | |||||||||||||
1924 | 28.95 | 37.84 | 31.69 | 52.63 | 56.32 | 73.75 | 76.47 | 78.81 | 66.12 | 57.84 | 45.10 | a | 23.44 | 52.41 | ||||||||||||
1925 | 26.23 | 39.93 | 47.47 | 56.32 | 64.18 | 75.73 | 77.56 | 73.87 | 68.28 | 47.27 | 39.12 | 32.23 | 54.02 | |||||||||||||
1926 | 31.15 | a | 40.52 | 39.62 | b | 48.12 | 63.66 | 72.57 | 77.03 | 77.82 | 70.57 | 58.29 | 41.23 | 29.73 | 54.19 | |||||||||||
1927 | 33.81 | 37.82 | 42.34 | 57.03 | 67.58 | 71.53 | 76.82 | 72.23 | 68.60 | 58.66 | 46.48 | 27.50 | 55.03 | |||||||||||||
1928 | 35.38 | a | 35.60 | 44.95 | 50.60 | 62.11 | 66.15 | 76.81 | 74.48 | 67.85 | 56.74 | 41.87 | 34.00 | 53.88 | ||||||||||||
1929 | 27.63 | 25.98 | 44.92 | 54.80 | 61.62 | a | 73.07 | 78.92 | 77.68 | 67.03 | 56.03 | 32.40 | 36.52 | 53.05 | ||||||||||||
1930 | 19.65 | 44.95 | 41.29 | 56.41 | a | 61.90 | 75.17 | 80.69 | 78.31 | 68.13 | 54.56 | 43.80 | 31.71 | 54.71 | ||||||||||||
1931 | 35.15 | 41.89 | 39.31 | 51.70 | 59.58 | 76.77 | 79.39 | 75.81 | 75.45 | 60.29 | 42.21 | a | 36.77 | 56.19 | ||||||||||||
1932 | 29.00 | 42.00 | c | 37.82 | 55.40 | 65.79 | 70.93 | 82.11 | 78.94 | 67.45 | 54.02 | 42.50 | 26.93 | b | 54.41 | |||||||||||
1933 | 36.89 | 31.23 | 47.58 | 53.10 | 63.50 | 78.68 | 81.61 | 76.56 | 74.80 | 57.63 | 45.88 | 41.08 | 57.38 | |||||||||||||
1934 | 37.80 | a | 37.80 | a | 45.92 | 57.18 | 69.81 | 78.47 | 85.26 | 82.24 | 67.02 | 61.32 | 46.83 | 35.85 | a | 58.79 | ||||||||||
1935 | 38.56 | 39.86 | 50.68 | 53.73 | 58.76 | 74.95 | 83.71 | 81.19 | 69.45 | 58.24 | 40.18 | 35.66 | 57.08 | |||||||||||||
1936 | 31.08 | 26.53 | 47.43 | a | 55.38 | 66.60 | 76.97 | 82.18 | 81.82 | 69.75 | 54.73 | 44.05 | 37.08 | 56.13 | ||||||||||||
1937 | 24.24 | 36.25 | 41.37 | 55.24 | a | 67.05 | 73.97 | 82.74 | 84.06 | 72.45 | 58.11 | 41.27 | 32.37 | 55.76 | ||||||||||||
1938 | 36.06 | 38.91 | a | 50.82 | 55.18 | 64.73 | 75.02 | 80.18 | 82.24 | 71.02 | 61.66 | 40.52 | 36.26 | 57.72 | ||||||||||||
1939 | 37.24 | 30.69 | b | 45.26 | 55.85 | 66.29 | 75.20 | 81.74 | 79.29 | 74.78 | 59.61 | 43.57 | 38.02 | 57.30 | ||||||||||||
1940 | 16.95 | 36.88 | 46.21 | 53.88 | 63.91 | d | 72.35 | 82.40 | a | 76.44 | 71.88 | 61.65 | 40.30 | b | 36.97 | 54.98 | ||||||||||
1941 | 35.45 | c | 36.61 | 41.82 | 53.08 | 65.79 | 70.33 | 76.10 | 76.35 | 70.95 | 56.53 | 45.37 | 36.58 | 55.41 | ||||||||||||
1942 | 30.26 | 32.58 | c | 43.74 | 56.50 | b | 63.98 | 71.60 | a | 78.00 | 75.62 | a | 66.74 | c | 55.82 | 46.31 | a | 34.44 | 54.63 | |||||||
1943 | 35.12 | b | 41.30 | a | 39.98 | b | 58.41 | a | 60.27 | a | 75.17 | 80.47 | 81.74 | f | 69.18 | b | 55.21 | 42.43 | a | 31.30 | a | 53.53 | a | |||
1944 | 33.27 | 35.98 | 40.17 | a | 48.35 | 63.90 | a | 73.08 | 75.92 | a | 77.66 | 68.97 | a | 56.90 | 44.38 | 32.92 | 54.29 | |||||||||
1945 | 33.24 | 36.38 | b | 48.75 | a | 49.50 | a | 62.03 | 67.45 | a | 76.98 | 77.52 | a | 67.12 | b | 56.71 | 43.94 | f | 32.41 | c | 55.28 | a | ||||
1946 | 36.85 | a | 42.54 | c | 49.68 | f | 63.20 | j | 60.83 | e | 75.84 | a | 81.93 | d | 78.11 | c | 70.52 | d | 56.23 | a | 39.20 | b | 40.73 | c | 58.28 | b |
1947 | 34.71 | c | 34.79 | b | 37.07 | d | 50.86 | e | 60.29 | 71.35 | c | 78.55 | a | 80.23 | 73.76 | e | 63.54 | c | 38.54 | c | 34.21 | e | 54.82 | |||
1948 | 31.40 | 32.17 | b | 34.83 | a | 60.07 | a | 64.98 | b | 73.22 | a | 79.34 | c | 76.18 | i | 72.28 | a | 58.38 | r | 40.43 | b | 35.36 | i | 54.30 | c | |
1949 | 22.37 | d | 35.14 | 45.24 | j | 52.69 | d | 62.85 | 67.00 | x | 77.60 | u | 75.97 | a | 68.06 | c | 57.18 | a | 49.82 | e | 34.96 | c | 51.01 | c | ||
1950 | 35.32 | a | 36.50 | f | 44.97 | m | 53.98 | 63.69 | 74.62 | a | 73.58 | 70.74 | 65.12 | b | 60.42 | a | 41.35 | 36.66 | 57.55 | b | ||||||
1951 | 28.64 | b | 37.35 | d | 40.45 | 50.27 | 63.05 | 67.23 | 78.25 | a | 76.84 | 66.13 | 55.39 | 37.97 | 32.55 | 52.84 | ||||||||||
1952 | 35.50 | 37.62 | 39.08 | 52.03 | 61.56 | 81.53 | 79.98 | 79.65 | 69.38 | 53.63 | 37.68 | 32.66 | 55.03 | |||||||||||||
1953 | 40.71 | 36.84 | 47.82 | 50.48 | 61.32 | 79.83 | 78.53 | 75.18 | 69.95 | 57.24 | 42.07 | 31.76 | 55.98 | |||||||||||||
1954 | 30.53 | 44.50 | 39.98 | 58.12 | 59.27 | a | 75.98 | c | 82.24 | 78.23 | 73.14 | a | 56.39 | 45.67 | 35.89 | 56.66 | ||||||||||
1955 | 32.89 | 31.88 | 41.92 | 54.63 | 65.06 | 70.73 | 80.03 | 78.61 | 70.47 | 59.21 | 39.73 | 34.50 | 54.97 | |||||||||||||
1956 | 32.98 | 31.47 | 44.08 | a | 51.57 | 68.23 | 79.38 | 79.15 | 76.61 | 70.97 | 60.68 | 41.07 | 37.61 | 56.15 | ||||||||||||
1957 | 28.58 | 40.41 | 42.53 | 50.88 | 59.61 | 71.27 | 81.73 | 79.50 | 66.18 | 56.59 | c | 40.07 | 39.37 | 54.73 | ||||||||||||
1958 | 33.10 | 35.41 | 32.40 | 49.52 | 66.02 | 74.95 | 77.23 | 77.52 | 71.27 | 56.50 | 41.08 | 34.90 | 54.16 | |||||||||||||
1959 | 27.74 | 34.39 | 42.21 | 50.90 | 64.37 | 76.22 | 76.21 | 77.29 | 66.63 | 52.63 | 40.07 | 37.31 | 53.83 | |||||||||||||
1960 | 29.03 | 27.07 | 37.73 | 56.83 | 62.85 | 74.12 | 76.34 | 78.44 | 69.70 | 56.92 | 43.85 | 32.68 | 53.80 | |||||||||||||
1961 | 33.31 | 37.61 | 43.53 | 50.50 | 62.71 | 73.42 | 77.82 | 76.16 | 64.75 | 56.11 | 38.92 | 32.48 | 53.94 | |||||||||||||
1962 | 27.85 | 38.95 | 41.84 | 54.97 | 70.61 | 73.88 | a | 79.95 | 79.42 | 67.58 | 58.29 | 44.87 | 37.58 | 56.32 | ||||||||||||
1963 | 23.03 | 39.93 | a | 48.05 | a | 58.92 | 68.60 | 77.88 | 83.16 | 78.90 | 73.45 | 64.58 | 45.75 | 27.63 | 57.49 | |||||||||||
1964 | 35.39 | 30.26 | b | 40.77 | 53.87 | 66.94 | 73.40 | 82.92 | 78.15 | 69.40 | 56.34 | 43.93 | 32.63 | 55.33 | ||||||||||||
1965 | 36.60 | 34.54 | 35.23 | 56.63 | 65.08 | 71.48 | 77.35 | 74.23 | 64.45 | 57.42 | 47.68 | 36.94 | 54.80 | |||||||||||||
1966 | 24.48 | 31.24 | a | 45.18 | 52.12 | 64.23 | 73.97 | 81.10 | 73.02 | 67.42 | 55.45 | 43.35 | 30.19 | 53.48 | ||||||||||||
1967 | 35.89 | 38.00 | 49.06 | 58.40 | 61.34 | 72.62 | 76.42 | 73.92 | 67.18 | 58.50 | 41.67 | 32.13 | a | 55.43 | ||||||||||||
1968 | 33.37 | 35.31 | 45.98 | 53.93 | 60.21 | 75.65 | 78.18 | 77.03 | 68.88 | 58.74 | 41.88 | 28.58 | 54.81 | |||||||||||||
1969 | 34.71 | 37.48 | 31.45 | 56.52 | 64.89 | 70.15 | 80.19 | 77.65 | 68.83 | 50.68 | 42.27 | 34.87 | 54.14 | |||||||||||||
1970 | 30.15 | 38.68 | 36.60 | a | 51.70 | 67.40 | 73.02 | 78.58 | 77.13 | 67.35 | 50.89 | 42.72 | 35.29 | 54.12 | ||||||||||||
1971 | 32.19 | 34.16 | 44.24 | 53.53 | 62.26 | 76.62 | 78.08 | 73.94 | 65.45 | 56.85 | 42.65 | 35.26 | 54.60 | |||||||||||||
1972 | 30.53 | 37.41 | 50.55 | 57.32 | 63.39 | 73.83 | 76.85 | 73.92 | 67.58 | 56.13 | 35.35 | 26.81 | 54.14 | |||||||||||||
1973 | 29.52 | 36.50 | 43.84 | 49.00 | 61.81 | 73.63 | 76.60 | 76.76 | 64.88 | 58.61 | 42.60 | 32.90 | 53.89 | |||||||||||||
1974 | 26.89 | 39.50 | 48.52 | 56.70 | 68.63 | 74.80 | 80.73 | 74.11 | 62.65 | 59.66 | 44.22 | 32.13 | 55.71 | |||||||||||||
1975 | 34.10 | 32.89 | 43.68 | 55.52 | 63.84 | 72.65 | 77.35 | 77.98 | 68.10 | 58.88 | b | 40.98 | 38.00 | 55.33 | ||||||||||||
1976 | 33.31 | 42.66 | 43.76 | 56.28 | 61.50 | 75.21 | b | 78.35 | 77.02 | 68.10 | 51.68 | 39.17 | 34.81 | 55.15 | ||||||||||||
1977 | 25.31 | 41.34 | 46.95 | 58.52 | 67.50 | 77.53 | 82.24 | 77.56 | 71.17 | 58.19 | 43.42 | 36.56 | 57.19 | |||||||||||||
1978 | 24.45 | 24.12 | 45.31 | 56.42 | 61.70 | a | 75.27 | 81.35 | 77.31 | 71.13 | 58.98 | 42.12 | 30.48 | 54.05 | ||||||||||||
1979 | 18.27 | 35.75 | 45.84 | 54.82 | 60.65 | 73.18 | 78.11 | 74.79 | 70.57 | 59.33 | b | 38.73 | 36.19 | 53.85 | ||||||||||||
1980 | 29.63 | 35.24 | 40.89 | 50.62 | 60.84 | 76.82 | 84.16 | 78.42 | 69.72 | 55.16 | 42.53 | a | 39.89 | 55.33 | ||||||||||||
1981 | 36.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.35 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.12 | 35.74 | 42.96 | 53.85 | 63.48 | 73.90 | 79.13 | 77.18 | 69.07 | 57.00 | 42.11 | 33.82 | 55.01 | |||||||||||||
S.D. | 5.23 | 4.92 | 4.55 | 2.99 | 2.97 | 2.94 | 2.51 | 2.58 | 2.80 | 3.19 | 3.03 | 3.59 | 1.38 | |||||||||||||
SKEW | -0.69 | -0.68 | -0.51 | -0.12 | 0.12 | -0.07 | 0.24 | -0.01 | 0.22 | -0.57 | -0.30 | -0.48 | 0.46 | |||||||||||||
MAX | 40.71 | 44.95 | 50.82 | 60.07 | 70.61 | 81.53 | 85.26 | 84.06 | 75.45 | 64.58 | 49.82 | 41.08 | 58.79 | |||||||||||||
MIN | 16.95 | 22.90 | 31.45 | 48.12 | 56.32 | 66.15 | 73.37 | 70.74 | 62.65 | 47.27 | 32.40 | 23.44 | 52.00 | |||||||||||||
YRS | 65 | 64 | 63 | 65 | 65 | 65 | 65 | 63 | 65 | 64 | 63 | 64 | 57 |