YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1871 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1872 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1873 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1874 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.24 | m | 77.77 | 73.52 | 71.83 | 66.10 | 51.30 | 48.29 | 64.80 | f | ||||||
1875 | 35.90 | 47.79 | 50.65 | 66.70 | 64.13 | 70.23 | 82.94 | 77.00 | 73.83 | 66.00 | 50.93 | 52.80 | a | 61.57 | ||||||||||||
1876 | 46.03 | 51.79 | 51.55 | 57.87 | 63.74 | 73.70 | 75.29 | 73.55 | 72.90 | 65.16 | 54.00 | 46.90 | 61.04 | |||||||||||||
1877 | 48.06 | 54.00 | 57.00 | 62.27 | 64.81 | 70.70 | 76.39 | 76.35 | 68.83 | 61.35 | 54.53 | 48.61 | 61.91 | |||||||||||||
1878 | 47.00 | 51.29 | 59.23 | 60.86 | a | 67.74 | 76.27 | 74.48 | 77.48 | 68.83 | 58.48 | 52.60 | 44.71 | 61.58 | ||||||||||||
1879 | 43.48 | 50.14 | 55.52 | 60.80 | 62.74 | 68.90 | 75.26 | 78.29 | 73.50 | 58.97 | 50.27 | 43.48 | 60.11 | |||||||||||||
1880 | 45.68 | 43.24 | 48.55 | 59.53 | 62.84 | 69.90 | 76.74 | 73.48 | 69.77 | 62.06 | 48.27 | 45.13 | 58.77 | |||||||||||||
1881 | 44.35 | 50.50 | 57.26 | 63.20 | 67.19 | 69.93 | 75.19 | 73.23 | 69.43 | 56.42 | 50.10 | 49.52 | 60.53 | |||||||||||||
1882 | 45.39 | 44.00 | 52.71 | 57.83 | 68.23 | 74.83 | 79.13 | 77.35 | 72.30 | 58.13 | 51.23 | 51.55 | 61.06 | |||||||||||||
1883 | 44.26 | 42.07 | 61.77 | 59.30 | 69.81 | 75.93 | 79.90 | 73.84 | 72.33 | 58.29 | 52.77 | 48.97 | 61.60 | |||||||||||||
1884 | 46.26 | 44.28 | 55.58 | 65.20 | 73.68 | 74.90 | 75.00 | 81.97 | 66.53 | 62.00 | 55.20 | 37.55 | 61.51 | |||||||||||||
1885 | 42.84 | 53.32 | 63.23 | 68.27 | 74.55 | 73.73 | 83.13 | 82.39 | 73.83 | 69.19 | 57.77 | 50.03 | 66.02 | |||||||||||||
1886 | 45.26 | 53.36 | 54.29 | 59.93 | 69.84 | 75.60 | 81.23 | 79.84 | 74.63 | 60.19 | 48.73 | 50.87 | 62.81 | |||||||||||||
1887 | 47.74 | 38.32 | 58.81 | 59.47 | 69.26 | 71.33 | 78.45 | 75.84 | 71.87 | 63.35 | 50.77 | 47.00 | 61.02 | |||||||||||||
1888 | 36.52 | 51.72 | 55.71 | 66.47 | 75.19 | 71.23 | 80.39 | 81.74 | 77.30 | 64.10 | a | 49.07 | 48.61 | 63.17 | ||||||||||||
1889 | 44.68 | 53.36 | 63.87 | 65.17 | 70.94 | 79.37 | 84.39 | 77.13 | 73.43 | 65.65 | 54.10 | 43.29 | 64.61 | |||||||||||||
1890 | 37.52 | b | 45.89 | a | 52.42 | 63.23 | 72.48 | 71.50 | 76.61 | 76.87 | 74.63 | 62.13 | a | 55.77 | 48.29 | 61.45 | ||||||||||
1891 | 48.77 | 42.29 | 51.84 | 60.50 | 70.35 | 68.67 | 80.48 | 82.10 | 70.10 | 64.97 | 53.60 | 46.53 | a | 61.68 | ||||||||||||
1892 | 44.77 | a | 50.03 | 57.42 | 56.60 | 69.23 | 72.40 | 75.00 | 78.45 | 72.70 | 61.25 | c | 50.90 | a | 42.74 | 60.96 | ||||||||||
1893 | 40.13 | a | 42.86 | 49.90 | 51.07 | 62.52 | 65.33 | 75.13 | 77.29 | 65.20 | 56.29 | 51.43 | 48.80 | a | 57.16 | |||||||||||
1894 | 45.03 | a | 42.93 | 50.71 | 57.10 | 64.55 | 66.66 | a | 78.84 | 80.87 | 68.27 | 59.48 | 54.53 | 44.60 | a | 59.46 | ||||||||||
1895 | 42.13 | 48.64 | 54.37 | a | 61.20 | 64.03 | 72.67 | 75.84 | 76.87 | 65.33 | 65.87 | 50.33 | 45.38 | b | 60.22 | |||||||||||
1896 | 48.70 | a | 52.14 | 53.35 | 54.07 | 59.58 | 70.53 | 81.52 | 74.71 | 70.90 | 64.68 | 43.23 | 48.19 | 60.13 | ||||||||||||
1897 | 43.42 | 47.36 | 45.74 | 65.63 | 71.87 | 69.10 | 74.10 | 82.26 | 68.67 | 62.39 | 49.90 | 47.84 | 60.69 | |||||||||||||
1898 | 42.87 | 50.61 | 51.29 | 60.60 | 65.55 | 71.33 | 77.19 | 77.77 | 71.50 | 60.23 | 49.00 | 42.10 | 60.00 | |||||||||||||
1899 | 45.03 | 44.96 | 50.87 | 56.73 | 57.55 | 67.43 | 77.61 | 69.06 | 74.57 | 58.84 | 57.13 | 47.74 | 58.96 | |||||||||||||
1900 | 49.32 | 47.07 | 59.48 | 60.93 | 64.35 | 72.40 | 77.06 | 72.29 | 68.57 | 59.32 | 51.53 | 50.32 | 61.06 | |||||||||||||
1901 | 44.74 | 48.86 | 53.74 | 57.33 | 65.03 | 65.40 | 72.77 | 80.19 | 67.00 | 67.10 | 53.77 | 45.32 | 60.11 | |||||||||||||
1902 | 43.71 | 49.89 | 50.45 | 56.67 | 63.48 | 71.00 | 75.16 | 78.77 | 72.83 | 64.68 | 50.87 | 44.55 | 60.17 | |||||||||||||
1903 | 47.06 | 48.39 | 53.87 | 57.60 | 66.29 | 73.30 | 74.03 | 75.65 | 71.90 | 64.00 | 51.13 | 45.77 | 60.75 | |||||||||||||
1904 | 46.00 | 46.10 | 48.71 | 63.93 | 67.74 | 73.57 | 77.45 | 79.84 | 74.73 | 64.71 | 56.47 | 47.74 | 62.25 | |||||||||||||
1905 | 44.97 | 48.89 | 57.97 | 66.23 | 64.42 | 70.13 | 80.16 | 76.81 | 71.00 | 58.65 | 51.83 | 44.87 | a | 61.33 | ||||||||||||
1906 | 47.35 | 50.04 | 52.74 | 66.60 | 65.45 | 69.30 | 84.77 | 80.39 | 71.70 | 63.35 | 50.77 | 47.43 | a | 62.49 | ||||||||||||
1907 | 38.81 | 51.25 | 51.26 | 61.40 | 69.26 | 71.67 | 78.55 | 73.87 | 71.87 | 64.23 | 55.50 | 48.74 | 61.37 | |||||||||||||
1908 | 47.35 | 48.38 | 52.90 | 62.53 | 60.90 | 71.10 | 80.42 | 76.42 | 70.90 | 60.35 | 55.20 | 43.29 | 60.81 | |||||||||||||
1909 | 38.03 | 48.21 | 55.16 | 60.00 | 64.32 | 73.07 | 73.19 | 76.68 | 73.80 | 62.35 | 52.33 | 40.39 | 59.80 | |||||||||||||
1910 | 42.29 | 44.50 | 60.84 | 62.80 | 69.74 | 69.33 | 78.10 | 74.26 | 69.17 | 62.42 | 51.83 | 46.90 | 61.02 | |||||||||||||
1911 | 42.58 | 46.04 | 58.84 | 58.43 | 62.19 | 68.60 | 81.13 | 77.03 | 65.93 | 62.48 | 51.57 | 45.45 | 60.02 | |||||||||||||
1912 | 46.13 | 50.76 | 54.48 | 57.97 | 68.81 | 73.57 | 76.90 | 75.06 | 72.33 | 59.32 | 52.33 | 45.90 | 61.13 | |||||||||||||
1913 | 42.77 | 46.14 | 50.87 | 59.40 | 66.42 | 72.13 | 78.19 | 78.77 | 72.73 | 60.39 | 52.13 | 44.32 | 60.36 | |||||||||||||
1914 | 50.48 | 48.00 | 57.97 | 62.70 | 71.58 | 70.53 | 80.06 | 79.10 | 67.27 | 64.13 | 52.47 | 41.55 | 62.15 | |||||||||||||
1915 | 43.58 | 51.18 | 60.58 | 65.70 | 66.55 | 72.03 | 76.06 | 82.68 | 71.67 | 63.32 | 49.87 | 46.06 | 62.44 | |||||||||||||
1916 | 34.13 | 48.03 | 53.19 | 62.10 | 63.32 | 71.57 | 72.71 | 78.52 | 72.37 | 63.13 | 49.13 | 41.81 | 59.17 | |||||||||||||
1917 | 44.32 | 46.39 | 48.61 | 55.90 | 61.65 | 71.97 | 80.65 | 82.13 | 71.53 | 66.90 | 57.43 | 52.55 | 61.67 | |||||||||||||
1918 | 49.45 | 47.18 | 53.61 | 63.33 | 64.55 | 78.83 | 78.39 | 77.26 | 77.97 | 63.48 | 51.67 | 46.87 | 62.72 | |||||||||||||
1919 | 47.58 | 47.11 | 55.48 | 61.93 | 66.77 | 70.77 | 79.77 | 80.10 | 71.37 | 58.32 | 50.33 | 38.55 | 60.67 | |||||||||||||
1920 | 44.58 | 49.97 | 52.81 | 56.10 | 65.68 | 71.83 | 79.23 | 80.65 | 69.07 | 59.00 | 52.67 | 47.68 | 60.77 | |||||||||||||
1921 | 46.39 | 50.61 | 54.71 | 58.87 | 66.45 | 72.90 | 76.26 | 77.45 | 69.70 | 65.48 | 54.43 | 44.00 | 61.44 | |||||||||||||
1922 | 40.39 | 45.56 | a | 49.77 | 56.43 | 67.94 | 76.17 | 79.58 | 77.23 | 73.93 | 62.10 | 48.77 | 42.45 | 60.03 | ||||||||||||
1923 | 46.94 | 43.25 | 55.55 | 63.47 | 66.06 | 71.70 | 77.48 | 81.48 | 74.73 | 64.77 | 57.33 | 46.29 | 62.42 | |||||||||||||
1924 | 43.45 | 53.76 | 53.58 | 63.40 | 72.42 | 74.67 | 78.23 | 75.94 | 73.70 | 61.39 | 50.47 | 41.07 | a | 61.84 | ||||||||||||
1925 | 49.39 | 51.57 | 55.39 | 62.53 | 70.97 | 73.47 | 81.26 | 76.13 | 71.33 | 64.35 | 51.23 | 50.94 | 63.21 | |||||||||||||
1926 | 47.48 | 54.71 | 63.42 | 70.43 | 68.06 | 77.70 | 82.77 | 79.65 | 70.87 | 65.45 | 56.53 | 45.61 | 65.22 | |||||||||||||
1927 | 43.23 | a | 51.79 | 54.29 | 61.27 | 62.87 | 73.70 | 78.90 | 79.90 | 69.53 | 62.52 | 54.80 | 42.45 | 61.27 | ||||||||||||
1928 | 43.23 | 50.72 | 57.48 | 58.73 | 74.13 | 69.80 | 79.23 | 78.32 | 70.23 | 61.23 | 51.87 | 45.23 | 61.68 | |||||||||||||
1929 | 39.26 | 41.93 | 54.58 | 57.43 | 68.26 | 71.30 | 80.00 | 80.90 | 75.63 | 67.58 | 51.80 | 49.90 | 61.55 | |||||||||||||
1930 | 32.65 | 53.14 | 58.87 | 64.50 | 63.77 | 71.93 | 77.61 | 80.74 | 72.37 | 61.42 | 52.27 | 44.74 | 61.17 | |||||||||||||
1931 | 49.84 | 51.18 | 55.77 | 65.13 | 73.45 | 72.60 | 82.13 | 81.10 | 71.53 | 64.00 | 49.60 | 44.35 | 63.39 | |||||||||||||
1932 | 44.19 | 47.10 | 53.45 | 61.86 | a | 66.48 | 76.47 | 75.71 | 77.26 | 77.17 | 64.45 | 55.13 | 42.71 | 61.83 | ||||||||||||
1933 | 43.65 | 43.75 | 53.97 | 61.50 | 61.00 | 71.40 | 79.06 | 80.35 | 67.40 | 65.26 | 51.63 | 50.48 | 60.79 | |||||||||||||
1934 | 51.55 | 56.36 | 64.03 | 69.97 | 70.81 | 74.03 | 76.84 | 80.48 | 72.30 | 65.48 | 54.90 | 48.10 | 65.40 | |||||||||||||
1935 | 45.97 | 52.50 | 50.29 | 60.50 | 68.94 | 74.43 | 78.68 | 79.71 | 78.07 | 60.52 | 48.20 | 46.58 | 62.03 | |||||||||||||
1936 | 48.48 | 39.25 | a | 52.52 | 64.47 | 70.71 | 73.80 | 77.74 | 80.42 | 73.20 | 68.23 | 53.00 | 47.29 | 62.43 | ||||||||||||
1937 | 34.35 | 47.04 | 56.10 | 57.13 | 68.35 | 74.80 | 78.45 | 76.65 | 72.53 | 67.52 | 54.10 | 49.03 | 61.34 | |||||||||||||
1938 | 46.45 | 48.14 | 53.35 | 63.33 | 69.84 | 75.27 | 82.81 | 76.68 | 77.60 | 64.58 | 49.60 | 48.10 | 62.98 | |||||||||||||
1939 | 47.90 | 46.39 | 57.48 | 66.07 | 70.94 | 69.70 | 80.52 | 81.52 | 75.13 | 63.58 | 56.40 | 51.00 | 63.89 | |||||||||||||
1940 | 47.29 | 51.97 | 59.16 | 63.53 | 73.29 | 79.20 | 79.19 | 81.90 | 73.70 | 65.55 | 49.67 | 48.97 | 64.45 | |||||||||||||
1941 | 49.10 | 55.64 | 64.23 | 65.97 | 67.97 | 71.70 | 84.52 | 77.58 | 68.93 | 63.29 | 55.20 | 47.94 | 64.34 | |||||||||||||
1942 | 40.29 | 49.36 | 55.94 | 62.73 | 65.42 | 71.20 | 80.94 | 80.58 | 75.83 | 65.42 | 51.10 | 48.23 | 62.25 | |||||||||||||
1943 | 39.97 | 53.39 | 53.74 | 64.40 | 65.29 | 69.87 | 78.23 | 76.06 | 79.03 | 62.74 | 53.93 | 47.03 | 61.97 | |||||||||||||
1944 | 46.26 | 49.90 | 54.94 | 60.23 | 68.42 | 71.43 | 79.29 | 77.26 | 76.87 | 68.06 | 51.70 | 44.45 | 62.40 | |||||||||||||
1945 | 48.77 | 51.11 | 52.03 | 58.60 | 68.23 | 72.73 | 81.45 | 79.39 | 71.73 | 63.94 | 50.87 | 46.81 | 62.14 | |||||||||||||
1946 | 47.32 | 49.89 | 54.19 | 61.17 | 70.45 | 69.90 | 78.71 | 78.61 | 71.90 | 58.58 | 51.57 | 47.93 | a | 61.69 | ||||||||||||
1947 | 43.71 | 54.54 | 59.81 | 64.63 | 73.35 | 70.57 | 76.77 | 75.90 | 75.17 | 62.10 | 53.23 | 49.77 | 63.30 | |||||||||||||
1948 | 46.61 | 47.86 | 52.48 | 56.13 | 65.23 | 75.87 | 76.52 | 74.19 | 72.73 | 62.81 | 50.07 | 43.39 | 60.32 | |||||||||||||
1949 | 36.16 | 46.82 | 54.32 | 64.00 | 71.06 | 74.00 | 77.55 | 77.35 | 75.87 | 58.71 | 59.53 | 46.77 | 61.85 | |||||||||||||
1950 | 34.97 | a | 47.50 | 52.00 | 58.63 | 66.84 | 72.03 | 79.06 | 81.90 | 74.50 | 59.00 | 52.53 | 52.83 | a | 60.98 | |||||||||||
1951 | 44.58 | 50.43 | 49.68 | 66.60 | 68.13 | 77.77 | 78.87 | 78.42 | 77.13 | 62.35 | 51.97 | 43.48 | 62.45 | |||||||||||||
1952 | 42.10 | 48.48 | 52.39 | 64.87 | 69.16 | 70.13 | 82.19 | 80.00 | 78.97 | 72.32 | 49.17 | 48.45 | 63.19 | |||||||||||||
1953 | 52.97 | 51.57 | 54.19 | 59.43 | 64.68 | 66.80 | 78.94 | 77.39 | 75.37 | 65.65 | 56.27 | 49.52 | 62.73 | |||||||||||||
1954 | 45.32 | 50.71 | 53.84 | 60.10 | 68.32 | 67.17 | 73.65 | 72.39 | 70.67 | 63.42 | 56.73 | 46.77 | 60.76 | |||||||||||||
1955 | 45.58 | 47.75 | 49.19 | 55.00 | 63.87 | 71.80 | 72.58 | 77.48 | 73.00 | 62.35 | 48.73 | 46.10 | 59.45 | |||||||||||||
1956 | 47.26 | 42.21 | a | 52.19 | 64.27 | 71.39 | 68.90 | 81.23 | 77.23 | 73.53 | 60.16 | 51.50 | 47.03 | 61.41 | ||||||||||||
1957 | 37.39 | 50.07 | 54.13 | 62.83 | 69.23 | 72.60 | 76.84 | 75.48 | 80.13 | 61.90 | 53.43 | 49.87 | 61.99 | |||||||||||||
1958 | 50.35 | 55.75 | 54.81 | 60.90 | 74.35 | 74.57 | 84.61 | 84.06 | 74.47 | 68.03 | 52.53 | 50.87 | 65.44 | |||||||||||||
1959 | 47.52 | 48.61 | 54.94 | 61.90 | 65.71 | 71.50 | 81.32 | 77.71 | 69.50 | 64.55 | 52.50 | 47.71 | 61.95 | |||||||||||||
1960 | 41.29 | 50.24 | 54.16 | 61.17 | 63.81 | 74.47 | 83.03 | 75.39 | 73.07 | 64.52 | 54.00 | 46.26 | 61.78 | |||||||||||||
1961 | 51.16 | 53.54 | 55.13 | 59.30 | 66.52 | 78.07 | 81.45 | 83.55 | 71.30 | 62.90 | 51.67 | 47.23 | 63.48 | |||||||||||||
1962 | 45.55 | 50.14 | 53.39 | 62.50 | 60.48 | 72.20 | 77.97 | 76.16 | 74.17 | 63.77 | 55.67 | 50.29 | 61.86 | |||||||||||||
1963 | 41.58 | 57.96 | 55.77 | 57.77 | 69.90 | 70.47 | 73.84 | 77.10 | 77.83 | 64.94 | 54.20 | 48.39 | 62.48 | |||||||||||||
1964 | 49.10 | 52.31 | 54.42 | 58.83 | 65.97 | 69.80 | 77.23 | 76.29 | 71.43 | 66.87 | 50.30 | 45.48 | 61.50 | |||||||||||||
1965 | 46.52 | 51.50 | 60.48 | 63.83 | a | 65.57 | a | 73.53 | 82.16 | 79.68 | 73.03 | 67.87 | 55.80 | 45.58 | 63.80 | |||||||||||
1966 | 46.97 | 50.96 | 56.10 | 64.40 | 70.65 | 74.87 | 77.68 | 80.16 | 75.73 | 64.32 | 54.83 | 50.52 | 63.93 | |||||||||||||
1967 | 50.23 | 53.79 | 52.97 | 57.80 | 70.32 | 78.10 | 82.61 | 88.48 | 80.37 | 65.03 | 55.07 | 47.77 | 65.21 | |||||||||||||
1968 | 46.35 | 58.59 | 58.68 | 59.43 | 67.68 | 74.13 | 81.84 | 75.77 | 73.23 | 62.52 | 54.63 | 43.23 | 63.01 | |||||||||||||
1969 | 38.45 | 48.43 | 59.71 | 60.67 | 72.81 | 76.33 | 78.42 | 77.68 | 73.07 | 61.84 | 53.93 | 48.35 | 62.47 | |||||||||||||
1970 | 47.00 | 55.64 | 57.42 | 57.23 | 68.84 | 77.67 | 81.35 | 80.52 | 70.73 | 63.19 | 54.70 | 45.94 | 63.35 | |||||||||||||
1971 | 46.16 | 50.36 | 52.13 | 61.13 | 68.32 | 69.60 | 81.10 | 82.81 | 72.27 | 61.32 | 51.67 | 45.23 | 61.84 | |||||||||||||
1972 | 44.45 | 50.59 | 58.10 | 57.03 | 71.65 | 73.37 | 82.71 | 83.26 | 71.67 | 63.45 | 54.40 | 42.52 | 62.77 | |||||||||||||
1973 | 45.00 | 53.21 | 55.10 | 63.10 | 70.74 | 73.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.04 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 44.60 | 49.28 | 54.88 | 61.28 | 67.54 | 72.38 | 78.69 | 78.24 | 72.55 | 63.10 | 52.56 | 46.63 | 61.80 | |||||||||||||
S.D. | 4.13 | 3.93 | 3.71 | 3.54 | 3.68 | 2.96 | 2.90 | 3.04 | 3.16 | 2.94 | 2.64 | 3.01 | 1.55 | |||||||||||||
SKEW | -0.81 | -0.31 | 0.48 | 0.02 | -0.12 | 0.18 | -0.04 | 0.10 | 0.11 | 0.07 | -0.08 | -0.39 | 0.28 | |||||||||||||
MAX | 52.97 | 58.59 | 64.23 | 70.43 | 75.19 | 79.37 | 84.77 | 88.48 | 80.37 | 72.32 | 59.53 | 52.83 | 66.02 | |||||||||||||
MIN | 32.65 | 38.32 | 45.74 | 51.07 | 57.55 | 65.33 | 72.58 | 69.06 | 65.20 | 56.29 | 43.23 | 37.55 | 57.16 | |||||||||||||
YRS | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 98 |