YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1876 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1877 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1878 | ----- | z | 58.95 | h | 64.90 | 69.03 | 77.53 | 84.90 | 93.16 | 92.34 | 83.42 | 73.77 | 62.28 | 53.44 | 75.48 | b | ||||||||||
1879 | 53.15 | 63.80 | 70.69 | 71.90 | 78.08 | 85.70 | 92.31 | 92.98 | 87.98 | 73.71 | 61.03 | 53.85 | 73.77 | |||||||||||||
1880 | 55.79 | 52.47 | 58.81 | 68.13 | 77.53 | 86.25 | 90.16 | 91.02 | 84.13 | 72.77 | 57.97 | 56.81 | 70.99 | |||||||||||||
1881 | 53.37 | 62.11 | 64.15 | 73.55 | 79.08 | 85.88 | 92.35 | 90.18 | 84.12 | 71.60 | 59.28 | 57.55 | 72.77 | |||||||||||||
1882 | 50.63 | 55.02 | 62.85 | 67.95 | 77.53 | 83.62 | 93.48 | 92.66 | 83.52 | 70.44 | 60.18 | 58.82 | 71.39 | |||||||||||||
1883 | 52.16 | 55.77 | 67.92 | 67.50 | 75.44 | 88.72 | 93.60 | 92.35 | 86.78 | 67.92 | 62.36 | a | 58.16 | 72.39 | ||||||||||||
1884 | 54.82 | 57.93 | 61.71 | 68.08 | 76.44 | 82.97 | 92.53 | 90.27 | 81.20 | 73.92 | 64.95 | 53.42 | 71.52 | |||||||||||||
1885 | 53.00 | 60.18 | 67.74 | 71.20 | 78.90 | 82.17 | 90.47 | 91.73 | 85.77 | 75.82 | 61.78 | 58.26 | 73.08 | |||||||||||||
1886 | 55.31 | 63.18 | 60.68 | 67.90 | 80.89 | 85.83 | 91.92 | 90.85 | 84.73 | 68.21 | 58.22 | 59.87 | 72.30 | |||||||||||||
1887 | 55.26 | 55.36 | 69.06 | 69.70 | 75.73 | 85.48 | 90.98 | 89.60 | 84.53 | 75.47 | 64.20 | 53.18 | 72.38 | |||||||||||||
1888 | 51.27 | 59.83 | 61.37 | 74.12 | 76.06 | 83.97 | 91.50 | 91.03 | 89.22 | 74.98 | 61.83 | 57.00 | 72.68 | |||||||||||||
1889 | 53.37 | 58.86 | 65.60 | 73.48 | 77.53 | 85.72 | 92.06 | 92.61 | 83.82 | 72.55 | 62.05 | 58.24 | 72.99 | |||||||||||||
1890 | 51.42 | 58.38 | 64.74 | 71.23 | 78.02 | 83.82 | 92.21 | 89.19 | 87.72 | 72.63 | 65.12 | 60.23 | 72.89 | |||||||||||||
1891 | 53.44 | 55.20 | 63.32 | 69.72 | 74.21 | 81.72 | 92.00 | 91.52 | 83.47 | 76.50 | 64.70 | 51.29 | 71.42 | |||||||||||||
1892 | 56.69 | 59.38 | 64.81 | 69.93 | 76.71 | 83.85 | 90.40 | 90.79 | 87.13 | 72.21 | 63.07 | 52.97 | 72.33 | |||||||||||||
1893 | 59.16 | 60.11 | 61.53 | 69.42 | 76.23 | 87.08 | 90.32 | 91.03 | 81.63 | 71.92 | 59.95 | 57.77 | 72.18 | |||||||||||||
1894 | 51.66 | 52.48 | 62.95 | 71.27 | 77.08 | 79.43 | 91.23 | 89.90 | 83.32 | 74.56 | 68.27 | 54.76 | 71.41 | |||||||||||||
1895 | 54.52 | 60.68 | 64.53 | 70.23 | 79.19 | 84.72 | 89.26 | 90.94 | 84.20 | 75.48 | 60.88 | 54.06 | 72.39 | |||||||||||||
1896 | 57.85 | 60.81 | 65.10 | 65.72 | 76.79 | 88.85 | 91.34 | 90.00 | 83.95 | 75.53 | 63.13 | 58.66 | 73.14 | |||||||||||||
1897 | 55.26 | 57.32 | 58.40 | 72.43 | 80.42 | 82.97 | 91.10 | 91.89 | 85.35 | 70.05 | 62.47 | 52.92 | 71.71 | |||||||||||||
1898 | 49.85 | 62.05 | 59.71 | 73.48 | 74.10 | 84.72 | 91.90 | 91.34 | 86.67 | 72.18 | 60.40 | 52.08 | 71.54 | |||||||||||||
1899 | 55.06 | 57.80 | 63.15 | 71.52 | 72.10 | 84.53 | 91.31 | 86.65 | 88.13 | 71.00 | 63.43 | 56.60 | 71.77 | |||||||||||||
1900 | 59.87 | 60.20 | 67.31 | 65.25 | 78.29 | 85.23 | 89.81 | 85.26 | 78.77 | h | 71.43 | j | 66.27 | 57.95 | 71.54 | b | ||||||||||
1901 | 54.71 | 59.82 | 64.66 | 67.55 | 74.47 | 83.03 | 91.71 | 90.55 | 81.60 | 74.48 | 65.80 | 56.77 | 72.10 | |||||||||||||
1902 | 55.21 | 58.89 | 59.32 | 71.25 | 75.29 | 85.07 | 87.48 | 88.52 | 85.33 | 73.81 | g | 60.00 | 54.95 | 71.03 | a | |||||||||||
1903 | 55.95 | 52.88 | 63.11 | 68.37 | 75.52 | 85.18 | 90.05 | 91.00 | 83.43 | 74.81 | 65.68 | 57.45 | 71.95 | |||||||||||||
1904 | 54.26 | 61.74 | 66.21 | 69.70 | 77.26 | 85.92 | 88.61 | 89.73 | 81.92 | 72.60 | 64.55 | a | 56.44 | 72.41 | ||||||||||||
1905 | 58.87 | 59.45 | 65.77 | 69.20 | 69.55 | j | 84.00 | 89.21 | 90.87 | 84.37 | 73.32 | 61.03 | 54.11 | 71.84 | a | |||||||||||
1906 | 54.87 | 62.20 | 64.24 | 67.65 | 73.42 | 83.37 | 91.50 | 88.92 | 82.98 | 74.37 | 60.78 | 56.56 | 71.74 | |||||||||||||
1907 | 53.89 | 64.00 | 62.05 | 69.48 | 73.06 | 80.05 | 89.13 | 88.00 | a | 82.23 | 72.71 | 62.55 | 56.32 | 71.12 | ||||||||||||
1908 | 56.21 | 56.28 | 64.89 | 71.07 | 72.50 | 81.42 | 91.65 | 91.02 | 82.57 | 68.24 | 62.71 | a | 53.60 | 71.01 | ||||||||||||
1909 | 57.66 | 57.84 | 59.60 | 68.97 | 74.81 | 83.82 | 90.50 | a | 88.47 | 82.72 | a | 70.24 | 60.58 | 50.29 | 70.46 | |||||||||||
1910 | 52.98 | 57.04 | 67.48 | 73.27 | 78.85 | 84.15 | 91.05 | 91.58 | 85.48 | 73.13 | 62.50 | a | 56.53 | 72.84 | ||||||||||||
1911 | 56.89 | 54.61 | 65.89 | 68.58 | 74.19 | 84.22 | 90.13 | 90.85 | 85.12 | a | 72.73 | 60.63 | 49.42 | 71.10 | ||||||||||||
1912 | 56.94 | 59.83 | 60.02 | 65.23 | 74.79 | 85.97 | 88.74 | 88.82 | 81.42 | 70.81 | 63.22 | 52.24 | 70.67 | |||||||||||||
1913 | 50.16 | 56.62 | 61.23 | 69.87 | 74.89 | 81.53 | 88.24 | 90.10 | 85.83 | 72.68 | 63.62 | 53.61 | 70.70 | |||||||||||||
1914 | 57.71 | 59.98 | 67.98 | 71.50 | 76.74 | 85.57 | 91.60 | 91.10 | a | 85.82 | 73.63 | 66.25 | 50.92 | 73.23 | ||||||||||||
1915 | 53.76 | 56.75 | 64.39 | 68.93 | c | 72.58 | 85.37 | 90.02 | 91.08 | 81.40 | 75.39 | 61.76 | a | 54.15 | a | 71.30 | ||||||||||
1916 | 53.39 | 64.07 | 69.84 | 72.93 | 75.52 | 85.37 | 90.19 | 89.44 | 84.03 | 68.52 | 59.98 | a | 50.65 | 71.99 | ||||||||||||
1917 | 52.07 | c | 58.46 | b | 61.35 | 68.47 | 71.53 | 87.38 | 92.10 | a | 90.16 | 86.50 | a | 76.76 | 64.33 | 58.98 | 72.34 | |||||||||
1918 | 54.31 | 57.88 | 66.02 | 70.95 | 74.55 | 90.42 | 90.26 | 86.44 | 84.60 | 74.03 | a | 60.37 | 52.82 | 71.89 | ||||||||||||
1919 | 55.05 | 55.75 | 61.21 | 72.53 | 77.60 | 86.45 | 91.25 | a | 89.95 | 84.18 | 68.26 | b | 60.31 | a | 56.85 | 71.62 | ||||||||||
1920 | 55.69 | 60.47 | 61.39 | 67.60 | 77.53 | 85.22 | 92.73 | 88.21 | 79.93 | 68.52 | 60.43 | a | 52.37 | 70.84 | ||||||||||||
1921 | 52.77 | 60.07 | 66.34 | 68.34 | a | 73.18 | a | 84.37 | 91.31 | 89.65 | 83.85 | 75.18 | 63.13 | 57.97 | 72.18 | |||||||||||
1922 | 50.79 | 55.91 | 60.48 | 65.48 | 77.56 | 86.50 | 91.77 | 91.27 | 88.33 | 73.69 | 58.30 | 57.34 | 71.45 | |||||||||||||
1923 | 58.18 | 58.34 | 61.95 | 68.15 | 79.16 | 80.18 | 89.74 | 89.38 | a | 81.58 | 70.26 | 62.45 | 53.44 | 71.07 | ||||||||||||
1924 | 52.97 | 61.69 | 59.34 | 67.13 | 79.11 | 88.50 | 91.60 | 90.45 | 86.67 | 70.19 | 62.93 | 53.05 | 71.97 | |||||||||||||
1925 | 53.42 | a | 61.86 | 65.85 | 70.47 | 79.26 | 84.87 | 92.32 | 90.18 | 83.10 | 70.18 | 60.50 | 56.47 | 72.37 | ||||||||||||
1926 | 52.74 | 61.64 | 66.81 | 72.67 | 77.66 | 86.77 | 91.35 | 90.66 | 85.53 | 75.26 | 64.47 | 52.39 | 73.16 | |||||||||||||
1927 | 56.63 | 61.32 | 62.31 | 69.92 | 77.74 | 84.35 | 91.76 | 90.50 | 83.67 | 74.44 | 64.82 | 52.98 | 72.54 | |||||||||||||
1928 | 56.63 | 58.02 | 66.65 | 70.42 | 79.11 | 85.32 | 91.05 | 90.69 | 86.40 | 73.15 | 62.25 | 55.37 | 72.92 | |||||||||||||
1929 | 51.63 | 54.94 | a | 62.98 | 67.13 | 78.23 | 84.53 | 91.83 | a | 91.87 | 84.03 | 75.87 | 60.10 | e | 60.04 | h | 73.01 | a | ||||||||
1930 | 52.82 | 62.98 | 64.23 | 73.10 | 72.02 | 84.32 | 91.44 | 89.53 | 82.13 | 71.92 | 63.63 | 53.77 | 71.82 | |||||||||||||
1931 | 55.52 | 59.38 | 66.37 | 73.58 | 80.74 | 84.83 | c | 94.90 | b | 90.10 | 83.60 | 73.47 | 58.75 | 53.23 | 72.87 | |||||||||||
1932 | 50.84 | 58.64 | 66.14 | j | 70.37 | 77.05 | 83.87 | 90.73 | a | 90.82 | a | 86.90 | 72.82 | 64.67 | 50.73 | 72.49 | a | |||||||||
1933 | 51.08 | 52.95 | 65.27 | 66.38 | a | 72.92 | 85.17 | 93.63 | 92.08 | 87.50 | 79.23 | 65.23 | 57.06 | 72.37 | ||||||||||||
1934 | 57.48 | 62.55 | 73.02 | 76.03 | 81.79 | 81.27 | 92.97 | 91.74 | 85.57 | 76.29 | 63.73 | 57.79 | 75.02 | |||||||||||||
1935 | 55.95 | 61.11 | 61.45 | 70.70 | 74.55 | 87.72 | 91.32 | 90.61 | 87.42 | 73.08 | 59.50 | 56.27 | 72.47 | |||||||||||||
1936 | 55.42 | 59.59 | 67.58 | 73.77 | 80.55 | 87.92 | 93.02 | 93.03 | 85.03 | 74.10 | 63.80 | 55.94 | 74.14 | |||||||||||||
1937 | 44.90 | 57.88 | 63.31 | 70.15 | 78.10 | 85.65 | 92.85 | 93.45 | 88.35 | g | 76.84 | 64.07 | 60.27 | 71.59 | a | |||||||||||
1938 | 58.35 | 58.20 | 62.19 | 70.78 | 77.47 | 85.12 | 90.56 | 90.47 | 87.45 | 73.18 | 59.05 | 57.92 | 72.56 | |||||||||||||
1939 | 55.23 | 53.23 | 65.50 | 73.83 | 78.98 | 85.10 | 91.67 | a | 92.60 | 83.20 | 74.24 | 66.50 | 60.95 | 73.42 | ||||||||||||
1940 | 59.19 | 59.62 | 67.81 | 72.25 | 81.68 | 87.95 | 91.55 | 92.08 | 85.28 | 75.65 | 60.97 | 59.08 | 74.43 | |||||||||||||
1941 | 56.39 | 62.35 | a | 64.79 | 67.00 | 80.21 | 82.67 | 91.92 | 87.13 | 80.77 | 71.19 | 65.25 | 57.69 | 72.28 | ||||||||||||
1942 | 58.18 | 57.50 | 63.08 | 68.12 | 76.29 | 84.59 | b | 94.21 | 90.95 | 84.78 | a | 75.39 | 65.70 | 58.94 | 73.14 | |||||||||||
1943 | 57.73 | 62.96 | a | 67.97 | 73.37 | 79.89 | 83.70 | 92.31 | 91.03 | 88.77 | 76.18 | 64.27 | 56.45 | 74.55 | ||||||||||||
1944 | 55.55 | 55.38 | a | 63.16 | 67.90 | a | 76.81 | 80.58 | 89.55 | 92.02 | 86.82 | 75.81 | 60.14 | a | 57.32 | 71.75 | ||||||||||
1945 | 55.08 | 59.18 | 60.65 | 69.00 | a | 76.97 | 82.80 | 92.63 | 92.06 | 86.70 | 77.24 | 62.13 | 54.95 | 72.45 | ||||||||||||
1946 | 56.02 | 56.89 | 63.63 | 74.55 | 77.45 | 86.85 | 91.58 | 92.85 | 87.00 | 70.39 | 59.87 | 58.48 | 72.96 | |||||||||||||
1947 | 53.85 | 63.25 | 65.82 | 70.98 | 80.21 | 84.24 | a | 92.47 | 89.87 | 88.07 | 75.21 | 59.13 | 53.61 | 73.06 | ||||||||||||
1948 | 56.84 | 57.10 | 59.76 | 71.20 | 76.69 | 83.90 | 90.77 | 91.85 | 86.25 | 74.73 | 59.22 | 51.85 | 71.68 | |||||||||||||
1949 | 45.81 | 53.93 | 60.89 | 72.32 | 75.56 | 85.35 | 90.92 | 89.23 | e | ----- | z | ----- | z | ----- | z | ----- | z | 71.75 | d | |||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.53 | 58.76 | 64.04 | 70.15 | 76.84 | 84.73 | 91.32 | 90.54 | 84.76 | 73.24 | 62.33 | 55.49 | 72.27 | |||||||||||||
S.D. | 2.86 | 3.01 | 3.05 | 2.46 | 2.46 | 2.11 | 1.38 | 1.58 | 2.17 | 2.49 | 2.35 | 2.78 | 0.95 | |||||||||||||
SKEW | -0.78 | -0.25 | 0.34 | 0.06 | -0.18 | -0.11 | -0.22 | -0.89 | -0.03 | -0.33 | 0.17 | -0.16 | 0.54 | |||||||||||||
MAX | 59.87 | 64.07 | 73.02 | 76.03 | 81.79 | 90.42 | 94.90 | 93.45 | 89.22 | 79.23 | 68.27 | 60.95 | 75.02 | |||||||||||||
MIN | 44.90 | 52.47 | 58.40 | 65.23 | 71.53 | 79.43 | 87.48 | 85.26 | 79.93 | 67.92 | 57.97 | 49.42 | 70.46 | |||||||||||||
YRS | 71 | 71 | 71 | 72 | 71 | 72 | 72 | 72 | 69 | 69 | 71 | 70 | 64 |