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 | 58.47 | n | 66.44 | v | 63.53 | 60.58 | 55.81 | 45.43 | 43.26 | 53.72 | g | |||||
1875 | 30.26 | 41.09 | 44.79 | 55.12 | 55.77 | 60.73 | 70.45 | 66.11 | 63.05 | 58.45 | 44.92 | 47.48 | b | 53.19 | ||||||||||||
1876 | 39.63 | 45.28 | 45.08 | 50.07 | 54.84 | 63.83 | 65.73 | 62.84 | 63.03 | 57.84 | 47.45 | 40.40 | 53.00 | |||||||||||||
1877 | 41.94 | 46.30 | 49.92 | 51.92 | 55.10 | 60.40 | 65.76 | 65.92 | 59.38 | 53.15 | 48.17 | 42.56 | 53.38 | |||||||||||||
1878 | 41.26 | 45.14 | 50.97 | 51.24 | a | 56.58 | 63.65 | 63.97 | 65.89 | 59.17 | 51.13 | 46.65 | 39.52 | 52.93 | ||||||||||||
1879 | 37.82 | 43.68 | 48.60 | 52.48 | 55.16 | 60.38 | 65.29 | 66.74 | 63.65 | 52.50 | 43.57 | 38.89 | 52.40 | |||||||||||||
1880 | 41.65 | 38.36 | 41.73 | 50.17 | 53.68 | 60.62 | 65.58 | 63.73 | 60.02 | 53.34 | 42.23 | 39.79 | 50.91 | |||||||||||||
1881 | 39.47 | 45.43 | 49.66 | 55.32 | 56.84 | 61.18 | 64.60 | 64.37 | 59.98 | 50.18 | 44.25 | 43.94 | 52.93 | |||||||||||||
1882 | 40.23 | 38.38 | 44.85 | 49.30 | 57.65 | 64.58 | 67.16 | 66.10 | 61.47 | 51.94 | 44.43 | 46.83 | a | 52.74 | ||||||||||||
1883 | 38.40 | 33.91 | 51.40 | 50.70 | 59.15 | 64.73 | 68.48 | 64.03 | 62.50 | 52.11 | 47.42 | 42.92 | 52.98 | |||||||||||||
1884 | 39.77 | 36.79 | 46.69 | 55.25 | 61.18 | 64.50 | 65.42 | 69.81 | 57.90 | 53.45 | 48.30 | 31.56 | 52.55 | |||||||||||||
1885 | 37.16 | 47.45 | 53.06 | 54.88 | 61.68 | 62.07 | 70.21 | 67.56 | 62.48 | 57.68 | 49.20 | 43.90 | 55.61 | |||||||||||||
1886 | 38.50 | 46.25 | 45.87 | 51.28 | 59.10 | 64.53 | 68.81 | 67.55 | 63.42 | 52.31 | 41.65 | 45.53 | 53.73 | |||||||||||||
1887 | 42.27 | 32.02 | 49.84 | 50.72 | 58.74 | 60.90 | 66.32 | 65.35 | 60.60 | 54.23 | 44.60 | 42.45 | 52.34 | |||||||||||||
1888 | 29.24 | 43.83 | 46.02 | 55.30 | 62.44 | 62.85 | 67.56 | 69.03 | 66.02 | 56.62 | b | 43.88 | 43.71 | 53.87 | ||||||||||||
1889 | 38.42 | 44.23 | 53.81 | 54.27 | 60.34 | 65.95 | 70.39 | 64.76 | 61.35 | 57.18 | 47.63 | 38.65 | a | 54.75 | ||||||||||||
1890 | 32.45 | b | 39.17 | b | 45.15 | 52.45 | 60.65 | 61.85 | 65.50 | 65.90 | 62.43 | a | 52.75 | a | 47.18 | 42.95 | 52.37 | |||||||||
1891 | 43.16 | 37.00 | 44.05 | 52.30 | 59.87 | 60.13 | 68.74 | 69.94 | 60.73 | 57.55 | 48.97 | 41.95 | b | 53.70 | ||||||||||||
1892 | 39.50 | b | 43.41 | 49.89 | 48.97 | 59.05 | 62.13 | 64.69 | 66.84 | 62.92 | 53.18 | c | 45.95 | b | 38.32 | 52.90 | ||||||||||
1893 | 34.07 | c | 37.14 | 44.39 | 45.90 | 54.39 | 57.62 | 64.50 | 66.23 | 57.92 | 49.50 | 45.65 | 43.91 | b | 50.10 | |||||||||||
1894 | 40.28 | b | 37.55 | 44.06 | 49.53 | 55.53 | 58.43 | b | 67.27 | 69.18 | 59.93 | 52.52 | 48.58 | 39.60 | b | 51.87 | ||||||||||
1895 | 37.32 | 42.88 | 45.69 | b | 51.48 | 55.76 | 62.17 | 65.69 | 65.34 | 57.22 | 56.02 | 43.88 | 40.50 | d | 52.00 | |||||||||||
1896 | 42.45 | b | 46.24 | 45.50 | 47.00 | 52.23 | 61.17 | 70.10 | 66.32 | 61.00 | 55.90 | 38.60 | 43.89 | 52.53 | ||||||||||||
1897 | 38.76 | 42.27 | 40.50 | 55.03 | 61.37 | 61.13 | 64.58 | 71.06 | 59.97 | 54.26 | 44.68 | 43.18 | 53.07 | |||||||||||||
1898 | 38.97 | 45.68 | 43.77 | 51.67 | 56.63 | 62.52 | 66.42 | 68.16 | 62.80 | 52.97 | 43.90 | 37.48 | 52.58 | |||||||||||||
1899 | 40.56 | 39.34 | 43.82 | 48.77 | 51.13 | 58.80 | 66.85 | 61.47 | 64.07 | 51.84 | 52.53 | 43.15 | 51.86 | |||||||||||||
1900 | 44.06 | 41.84 | 51.84 | 52.25 | 56.77 | 63.43 | 66.58 | 63.08 | 60.00 | 52.19 | 45.85 | 44.85 | 53.56 | |||||||||||||
1901 | 39.53 | 43.05 | 46.55 | 48.82 | 56.69 | 58.05 | 62.84 | 68.47 | 58.32 | 59.08 | 48.40 | 41.13 | 52.58 | |||||||||||||
1902 | 38.45 | 44.66 | 45.00 | 49.03 | 56.23 | 61.33 | 65.15 | 66.77 | 62.02 | 56.52 | 46.07 | 40.39 | 52.63 | |||||||||||||
1903 | 42.85 | 41.04 | 45.74 | 49.82 | 56.90 | 64.22 | 64.21 | 66.03 | 61.47 | 55.61 | 46.18 | 41.05 | 52.93 | |||||||||||||
1904 | 42.08 | 41.28 | 43.47 | 54.80 | 57.65 | 62.90 | 67.02 | 67.45 | 63.62 | 56.52 | 51.33 | 43.34 | 54.29 | |||||||||||||
1905 | 40.42 | 42.62 | 50.76 | 55.75 | 56.26 | 61.37 | 68.47 | 66.15 | 62.05 | 51.31 | 44.40 | 40.40 | b | 53.33 | ||||||||||||
1906 | 42.90 | 44.95 | 45.48 | 55.65 | 56.89 | 60.03 | 72.31 | 68.18 | 61.73 | 55.61 | 46.20 | 42.97 | b | 54.41 | ||||||||||||
1907 | 33.95 | 45.25 | 44.89 | 52.13 | 59.15 | 62.63 | 67.92 | 64.53 | 62.73 | 57.32 | 48.73 | 43.98 | 53.60 | |||||||||||||
1908 | 42.24 | 42.91 | 46.16 | 52.93 | 52.87 | 61.18 | 69.69 | 65.98 | 60.03 | 52.87 | 48.83 | 39.03 | 52.90 | |||||||||||||
1909 | 32.81 | 43.30 | 47.58 | 51.03 | 54.84 | 62.67 | 63.92 | 64.92 | 63.27 | 54.58 | 47.18 | 35.60 | 51.81 | |||||||||||||
1910 | 37.56 | 39.29 | 52.23 | 53.77 | 60.05 | 60.30 | 67.10 | 63.89 | 60.03 | 56.03 | 46.80 | 42.89 | 53.33 | |||||||||||||
1911 | 38.40 | 40.27 | 49.19 | 48.83 | 54.29 | 59.58 | 69.52 | 67.08 | 58.40 | 54.24 | 46.02 | 41.31 | 52.26 | |||||||||||||
1912 | 41.39 | 45.29 | 46.34 | 49.87 | 59.15 | 63.62 | 67.35 | 65.73 | 62.27 | 51.66 | 47.07 | 41.44 | 53.43 | |||||||||||||
1913 | 38.13 | 39.71 | 44.56 | 51.05 | 57.58 | 62.93 | 67.85 | 68.61 | 62.33 | 53.19 | 47.50 | 40.73 | 52.85 | |||||||||||||
1914 | 45.85 | 43.36 | 51.15 | 53.73 | 61.08 | 61.47 | 68.56 | 68.03 | 59.35 | 57.37 | 47.05 | 36.81 | 54.48 | |||||||||||||
1915 | 39.21 | 45.32 | 52.55 | 55.65 | 57.71 | 62.67 | 67.16 | 71.26 | 62.32 | 55.76 | 45.38 | 42.03 | 54.75 | |||||||||||||
1916 | 29.66 | 42.28 | 46.94 | 53.13 | 54.77 | 61.93 | 64.15 | 68.03 | 62.50 | 53.26 | 43.72 | 38.10 | 51.54 | |||||||||||||
1917 | 39.66 | 41.50 | 42.55 | 49.35 | 54.56 | 61.80 | 69.02 | 70.34 | 63.12 | 57.31 | 50.67 | 48.40 | 54.02 | |||||||||||||
1918 | 45.44 | 41.66 | 46.61 | 52.83 | 55.56 | 67.13 | 67.76 | 67.32 | 67.45 | 56.37 | 46.65 | 42.29 | 54.76 | |||||||||||||
1919 | 42.24 | 42.57 | 48.16 | 53.38 | 57.23 | 60.60 | 67.94 | 68.55 | 62.50 | 50.94 | 45.02 | 33.58 | 52.73 | |||||||||||||
1920 | 39.32 | 42.17 | 45.87 | 48.40 | 55.11 | 62.10 | 68.16 | 69.32 | 61.17 | 53.08 | 46.80 | 44.06 | 52.96 | |||||||||||||
1921 | 41.58 | 45.27 | 47.95 | 50.72 | 57.08 | 64.43 | 65.53 | 67.05 | 60.50 | 57.05 | 48.73 | 39.11 | 53.75 | |||||||||||||
1922 | 35.15 | 39.94 | a | 43.27 | 48.70 | 58.06 | 65.48 | 68.23 | 67.24 | 63.88 | 55.44 | 43.52 | 38.02 | 52.24 | ||||||||||||
1923 | 42.85 | 37.43 | 47.21 | 54.25 | 57.60 | 62.48 | 67.81 | 70.56 | 64.52 | 57.08 | 50.40 | 41.50 | 54.47 | |||||||||||||
1924 | 38.45 | 47.97 | 45.85 | 53.05 | 61.24 | 64.30 | 67.03 | 66.52 | 63.40 | 54.58 | 45.60 | 35.84 | b | 53.65 | ||||||||||||
1925 | 44.82 | 46.36 | 47.45 | 54.18 | 61.16 | 63.40 | 69.84 | 65.97 | 62.90 | 55.74 | 46.08 | 45.77 | 55.31 | |||||||||||||
1926 | 42.76 | 48.84 | 53.50 | 60.22 | 59.16 | 66.93 | 70.47 | 69.16 | 61.55 | 57.84 | 50.57 | 40.95 | 56.83 | |||||||||||||
1927 | 39.08 | a | 45.39 | a | 46.87 | 51.95 | 55.34 | 64.37 | 68.56 | 69.16 | 61.93 | 54.94 | 49.82 | 37.84 | 53.77 | |||||||||||
1928 | 38.61 | 44.22 | 50.81 | 51.42 | 62.56 | 62.23 | 69.00 | 67.50 | 61.53 | 54.71 | 46.48 | 40.15 | 54.10 | |||||||||||||
1929 | 34.15 | 35.68 | 47.68 | 49.18 | 58.52 | 62.43 | 68.31 | 69.10 | 64.83 | 58.48 | 44.75 | 45.31 | 53.20 | |||||||||||||
1930 | 28.08 | 46.30 | 50.31 | 55.78 | 55.03 | 62.20 | 66.66 | 69.89 | 63.67 | 53.73 | 46.03 | 40.47 | 53.18 | |||||||||||||
1931 | 44.73 | 45.00 | 48.81 | 55.50 | 62.69 | 63.60 | 70.13 | 69.19 | 62.75 | 55.81 | 43.97 | 40.13 | 55.19 | |||||||||||||
1932 | 39.74 | 41.47 | 47.92 | 53.41 | a | 57.61 | 65.83 | 65.76 | 68.05 | 65.53 | 57.11 | 49.33 | 38.11 | 54.16 | ||||||||||||
1933 | 39.87 | 38.20 | 47.03 | 51.67 | 53.92 | 62.32 | 67.98 | 69.60 | 59.65 | 57.15 | 46.52 | 46.65 | 53.38 | |||||||||||||
1934 | 46.90 | 49.41 | 55.23 | 59.75 | 61.45 | 64.08 | 66.98 | 69.47 | 62.77 | 57.35 | 50.30 | 44.10 | 57.32 | |||||||||||||
1935 | 40.44 | 46.23 | 44.05 | 51.72 | 57.85 | 64.40 | 67.81 | 68.42 | 67.18 | 53.29 | 42.37 | 42.13 | 53.82 | |||||||||||||
1936 | 44.15 | 34.26 | b | 45.32 | 55.55 | 61.23 | 65.17 | 67.77 | 69.53 | 63.47 | 58.68 | 45.53 | 43.73 | 54.53 | ||||||||||||
1937 | 29.85 | 41.75 | 49.68 | 50.05 | 58.45 | 65.45 | 68.42 | 66.81 | 63.85 | 59.26 | 49.67 | 44.03 | 53.94 | |||||||||||||
1938 | 41.39 | 43.36 | 46.90 | 54.37 | 59.42 | 64.87 | 71.02 | 66.23 | 67.48 | 57.24 | 44.85 | 43.66 | 55.06 | |||||||||||||
1939 | 43.74 | 41.00 | 49.37 | 55.92 | 60.68 | 61.28 | 69.42 | 69.95 | 65.40 | 56.53 | 49.97 | 46.37 | 55.80 | |||||||||||||
1940 | 42.21 | 47.19 | 51.82 | 55.32 | 62.60 | 67.48 | 68.95 | 70.47 | 65.60 | 58.68 | 44.25 | 43.98 | 56.55 | |||||||||||||
1941 | 44.13 | 48.89 | 54.92 | 56.48 | 59.02 | 63.27 | 72.85 | 68.58 | 61.38 | 56.34 | 49.33 | 43.81 | 56.58 | |||||||||||||
1942 | 36.61 | 44.20 | 47.98 | 54.20 | 57.37 | 62.35 | 70.97 | 70.15 | 65.50 | 57.48 | 46.37 | 44.26 | 54.79 | |||||||||||||
1943 | 35.02 | 46.30 | 47.16 | 55.65 | 56.60 | 61.33 | 67.84 | 66.69 | 67.88 | 56.47 | 48.58 | 42.08 | 54.30 | |||||||||||||
1944 | 41.23 | 44.10 | 47.29 | 52.58 | 59.02 | 62.55 | 68.50 | 67.52 | 66.63 | 60.11 | 47.13 | 40.42 | 54.76 | |||||||||||||
1945 | 44.44 | 45.86 | 46.05 | 51.40 | 59.97 | 63.25 | 70.16 | 68.84 | 62.52 | 56.08 | 46.77 | 42.53 | 54.82 | |||||||||||||
1946 | 42.56 | 44.59 | 47.56 | 52.83 | 61.23 | 61.85 | 68.74 | 68.32 | 63.07 | 52.45 | 45.42 | 43.67 | b | 54.36 | ||||||||||||
1947 | 39.05 | 47.96 | 52.15 | 55.88 | 63.08 | 62.42 | 67.56 | 66.32 | 65.23 | 56.40 | 48.43 | 45.02 | 55.79 | |||||||||||||
1948 | 41.55 | 42.38 | 46.08 | 49.55 | 57.16 | 66.48 | 66.90 | a | 65.65 | 62.95 | 55.19 | 45.25 | 39.27 | a | 53.20 | |||||||||||
1949 | 30.73 | 41.38 | 48.13 | 54.72 | 61.26 | 63.55 | 67.11 | 67.79 | 65.73 | 51.00 | 52.80 | 42.53 | 53.89 | |||||||||||||
1950 | 29.33 | b | 41.93 | 46.19 | 50.75 | 56.84 | 63.35 | 68.20 | a | 70.79 | 64.17 | 53.37 | 47.72 | 47.71 | b | 53.36 | ||||||||||
1951 | 40.24 | 44.75 | 43.18 | 56.20 | 58.44 | 66.40 | 68.16 | 67.37 | 66.13 | 55.71 | 47.13 | 39.24 | 54.41 | |||||||||||||
1952 | 37.60 | 42.53 | 45.95 | 54.30 | 59.03 | 61.23 | 69.77 | 68.95 | 67.15 | 62.03 | 42.97 | 43.73 | 54.60 | |||||||||||||
1953 | 48.48 | 45.29 | 47.31 | 51.60 | 56.34 | 59.35 | 67.97 | 67.94 | 65.28 | 57.13 | 50.75 | 45.05 | 55.21 | |||||||||||||
1954 | 40.32 | 44.82 | 45.56 | 51.18 | 58.76 | 59.22 | 64.34 | 64.39 | 62.18 | 55.55 | 51.50 | 42.47 | 53.36 | |||||||||||||
1955 | 41.18 | 41.93 | 42.56 | 47.47 | 54.68 | 62.32 | 63.94 | 66.82 | 63.35 | 55.69 | 42.88 | 41.24 | 52.00 | |||||||||||||
1956 | 42.39 | 37.81 | b | 45.77 | 54.73 | 61.32 | 60.70 | 69.65 | 67.63 | 63.88 | 53.61 | 45.78 | 41.85 | 53.76 | ||||||||||||
1957 | 32.42 | 43.61 | 47.89 | 54.27 | 60.79 | 63.85 | 66.76 | 66.00 | 68.92 | 55.21 | 46.58 | 44.76 | 54.25 | |||||||||||||
1958 | 45.74 | 50.43 | 47.32 | 52.65 | 64.19 | 66.52 | 72.63 | 71.90 | 64.73 | 59.18 | 47.57 | 46.50 | 57.45 | |||||||||||||
1959 | 42.95 | 43.38 | 47.94 | 53.58 | 56.77 | 63.28 | 70.03 | 67.13 | 61.53 | 57.27 | 46.38 | 42.82 | 54.42 | |||||||||||||
1960 | 37.27 | 44.40 | 46.77 | 52.80 | 55.55 | 64.25 | 70.53 | 66.15 | 63.78 | 56.65 | 48.18 | 41.02 | 53.95 | |||||||||||||
1961 | 46.11 | 48.27 | 48.40 | 51.58 | 58.00 | 67.12 | 70.35 | 72.18 | 61.60 | 54.92 | 45.20 | 42.69 | 55.54 | |||||||||||||
1962 | 39.73 | 44.12 | 46.34 | 53.53 | 53.76 | 62.40 | 67.02 | 66.90 | 64.97 | 56.40 | 50.00 | 45.35 | 54.21 | |||||||||||||
1963 | 36.27 | 50.95 | 47.94 | 50.57 | 59.77 | 62.22 | 65.11 | 67.68 | 67.88 | 57.45 | 48.87 | 43.16 | 54.82 | |||||||||||||
1964 | 44.29 | 44.79 | 47.10 | 50.02 | 56.03 | 61.17 | 67.23 | 66.69 | 62.15 | 58.11 | 44.98 | 40.27 | 53.57 | |||||||||||||
1965 | 42.44 | 45.45 | 50.76 | 54.45 | a | 55.93 | a | 62.73 | 70.23 | 69.53 | 62.82 | 59.08 | 50.63 | 40.79 | 55.40 | |||||||||||
1966 | 42.29 | 44.71 | 48.18 | 55.07 | 59.71 | 64.27 | 67.19 | 68.81 | 65.88 | 55.82 | 49.65 | 46.05 | 55.64 | |||||||||||||
1967 | 45.71 | 46.29 | 45.89 | 49.28 | 59.45 | 67.38 | 70.58 | 74.97 | 68.67 | 57.10 | 49.67 | 43.10 | 56.51 | |||||||||||||
1968 | 41.42 | 51.52 | 50.92 | 50.95 | 58.50 | 64.27 | 70.47 | 66.81 | 63.90 | 54.89 | 48.72 | 38.60 | 55.08 | |||||||||||||
1969 | 34.02 | 43.04 | 50.05 | 52.22 | 62.26 | 67.25 | 67.55 | 66.95 | 64.07 | 54.24 | 48.53 | 44.27 | 54.54 | |||||||||||||
1970 | 42.23 | 48.89 | 49.10 | 49.30 | 58.02 | 66.65 | 69.34 | 68.58 | 61.65 | 55.16 | 48.52 | 41.52 | 54.91 | |||||||||||||
1971 | 41.90 | 44.29 | 45.39 | 51.98 | 58.42 | 60.70 | 69.58 | 71.76 | 62.33 | 53.74 | 46.82 | 40.94 | 53.99 | |||||||||||||
1972 | 39.52 | 44.59 | 50.76 | 48.63 | 61.29 | 63.92 | 70.94 | 71.69 | 61.75 | 54.92 | 49.02 | 38.08 | 54.59 | |||||||||||||
1973 | 39.95 | 46.48 | 48.24 | 53.42 | 60.03 | 63.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.97 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 39.67 | 43.32 | 47.50 | 52.42 | 58.04 | 62.86 | 67.82 | 67.58 | 62.85 | 55.36 | 46.89 | 41.95 | 53.85 | |||||||||||||
S.D. | 4.25 | 3.70 | 2.94 | 2.66 | 2.69 | 2.19 | 2.13 | 2.27 | 2.47 | 2.40 | 2.53 | 3.00 | 1.35 | |||||||||||||
SKEW | -0.79 | -0.53 | 0.40 | 0.16 | -0.05 | 0.12 | -0.05 | 0.16 | 0.23 | -0.12 | -0.17 | -0.58 | 0.25 | |||||||||||||
MAX | 48.48 | 51.52 | 55.23 | 60.22 | 64.19 | 67.48 | 72.85 | 74.97 | 68.92 | 62.03 | 52.80 | 48.40 | 57.45 | |||||||||||||
MIN | 28.08 | 32.02 | 40.50 | 45.90 | 51.13 | 57.62 | 62.84 | 61.47 | 57.22 | 49.50 | 38.60 | 31.56 | 50.10 | |||||||||||||
YRS | 99 | 99 | 99 | 99 | 99 | 99 | 98 | 99 | 99 | 99 | 99 | 99 | 98 |