YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | 53.94 | 51.32 | 51.65 | 57.35 | 64.18 | 69.92 | 73.73 | 76.00 | 65.92 | 59.37 | 53.40 | 52.40 | a | 60.76 | ||||||||||||
1894 | 46.56 | 47.25 | 53.44 | 60.85 | 61.80 | a | 64.68 | 77.05 | 76.50 | 71.47 | 65.48 | 61.58 | 49.42 | 61.34 | ||||||||||||
1895 | 48.02 | 53.54 | 54.52 | 58.43 | 65.81 | 68.93 | 71.81 | 73.55 | 69.03 | 67.25 | o | 54.33 | 48.58 | 60.59 | a | |||||||||||
1896 | 52.29 | 52.14 | h | 54.81 | 53.80 | 64.55 | 75.00 | 77.68 | 76.35 | 69.72 | 64.61 | 53.83 | 51.03 | 63.06 | a | |||||||||||
1897 | 48.10 | 48.27 | b | 49.68 | ----- | z | 64.29 | ----- | z | ----- | z | ----- | z | 69.37 | 58.10 | 55.07 | 46.13 | 54.87 | d | |||||||
1898 | 43.38 | b | 53.64 | 50.94 | ----- | z | ----- | z | ----- | z | 78.61 | 80.32 | 74.33 | 64.74 | 54.33 | 48.50 | 60.98 | c | ||||||||
1899 | 48.94 | 50.54 | 52.42 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.38 | 60.98 | a | 56.65 | 51.92 | 57.12 | e | ||||||
1900 | 52.68 | 53.86 | 58.65 | 56.16 | a | 66.87 | 73.83 | 78.03 | 72.57 | a | 66.35 | 64.02 | 59.95 | 52.00 | a | 62.91 | ||||||||||
1901 | 48.75 | a | 52.76 | a | 55.89 | 57.62 | a | 64.00 | 71.25 | 78.84 | 79.77 | 68.57 | 65.19 | 57.85 | 53.05 | 62.79 | ||||||||||
1902 | 51.50 | c | 52.30 | 52.03 | 59.20 | 63.31 | 73.32 | b | 75.16 | 73.68 | 74.53 | 63.85 | a | 52.13 | c | 50.03 | b | 61.75 | ||||||||
1903 | 50.33 | b | 46.25 | 53.26 | 56.93 | 63.40 | 71.42 | 77.43 | i | 77.47 | 71.29 | a | 68.10 | 61.78 | ----- | z | 62.02 | b | ||||||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | 73.20 | k | 75.50 | v | 68.96 | f | 69.47 | b | 64.02 | 54.94 | 52.98 | 44.35 | 57.15 | g | ||||
1905 | ----- | z | ----- | z | 50.14 | b | 54.33 | 55.79 | 62.37 | 71.06 | 72.68 | 70.28 | 63.71 | 54.33 | 48.89 | 60.36 | b | |||||||||
1906 | 49.40 | 54.18 | 53.61 | 58.31 | a | 62.73 | 71.97 | 81.03 | 77.13 | 73.58 | 69.69 | 55.32 | 52.55 | a | 63.29 | |||||||||||
1907 | 49.27 | 58.61 | 54.80 | a | 60.63 | 63.52 | 69.42 | 77.47 | 75.44 | 71.02 | 64.77 | 57.20 | 53.40 | 62.96 | ||||||||||||
1908 | 52.34 | 52.07 | 58.35 | 62.77 | 61.76 | 72.21 | a | 79.75 | o | 77.63 | 72.70 | 63.42 | 57.35 | 49.76 | 61.85 | a | ||||||||||
1909 | 52.13 | 51.73 | 52.98 | a | 61.62 | 63.18 | 72.05 | 76.45 | 79.87 | 72.26 | a | 66.32 | 58.35 | 48.19 | 62.93 | |||||||||||
1910 | 50.56 | 52.62 | 59.94 | 64.73 | 69.08 | 70.52 | 78.65 | 78.45 | 75.23 | 67.39 | 58.88 | 53.74 | 64.98 | |||||||||||||
1911 | 53.81 | 50.10 | b | 59.84 | 60.17 | 63.39 | 69.35 | 78.40 | 76.52 | 71.78 | a | 65.42 | 57.86 | a | 48.71 | 62.94 | ||||||||||
1912 | 54.79 | 55.55 | 52.84 | 56.28 | 64.24 | 71.72 | 74.77 | 73.87 | 71.45 | 61.19 | 60.00 | 50.60 | 62.28 | |||||||||||||
1913 | 50.06 | 52.59 | 55.61 | 61.40 | 64.18 | 68.92 | 76.35 | 78.58 | 76.07 | 66.50 | 56.65 | 49.44 | 63.03 | |||||||||||||
1914 | 51.95 | 54.57 | 59.45 | 60.86 | a | 64.11 | 71.28 | 77.38 | a | 75.82 | 72.27 | 66.53 | 61.38 | 46.35 | 63.50 | |||||||||||
1915 | 48.60 | 48.79 | 55.08 | 59.67 | 62.40 | 71.50 | 75.87 | 78.61 | 71.48 | 67.95 | 56.87 | 51.92 | 62.39 | |||||||||||||
1916 | 48.23 | 58.29 | 62.71 | 64.73 | 70.56 | 77.22 | 78.47 | 75.82 | 70.82 | 59.13 | 55.85 | 48.13 | 64.16 | |||||||||||||
1917 | 46.95 | 51.50 | 54.27 | 59.88 | 61.23 | 76.07 | 80.13 | 77.73 | 75.95 | 69.32 | 58.33 | a | 56.58 | 63.99 | ||||||||||||
1918 | 51.31 | 53.61 | 57.24 | 61.45 | 63.19 | 77.25 | 76.95 | 76.73 | 73.23 | 67.10 | 54.53 | 48.47 | 63.42 | |||||||||||||
1919 | 52.05 | 48.65 | a | 52.21 | 61.12 | 66.19 | 74.93 | 80.10 | 79.42 | 72.40 | 61.10 | 55.65 | 52.26 | 63.01 | ||||||||||||
1920 | 53.02 | 52.50 | 52.47 | 56.83 | 64.63 | 70.17 | 79.18 | 76.95 | 71.43 | 59.31 | 54.43 | 47.65 | 61.55 | |||||||||||||
1921 | 47.63 | 51.46 | 53.58 | 55.10 | 57.53 | 70.35 | 80.26 | 78.60 | 70.95 | a | 66.44 | 57.58 | 53.69 | 61.93 | ||||||||||||
1922 | 45.61 | 48.91 | 51.00 | 55.45 | 65.79 | 74.03 | 78.16 | 79.42 | 77.72 | 64.58 | 51.92 | 52.44 | 62.09 | |||||||||||||
1923 | 50.05 | b | 48.36 | 50.27 | 53.27 | 66.27 | 68.20 | 76.90 | 76.29 | 72.72 | 64.44 | 59.67 | 52.17 | a | 61.55 | |||||||||||
1924 | 50.27 | a | 56.93 | 51.44 | 58.10 | 66.85 | 73.95 | a | 74.52 | 75.69 | 73.75 | 60.48 | 59.93 | 50.34 | 62.69 | |||||||||||
1925 | 50.19 | 55.21 | 55.94 | 58.48 | 64.60 | 70.55 | 77.87 | 73.81 | 68.47 | 60.68 | 54.40 | 53.27 | 61.96 | |||||||||||||
1926 | 48.55 | 54.84 | 57.60 | 61.02 | 65.68 | 74.28 | 77.69 | 78.69 | 71.55 | 68.31 | 61.90 | 48.79 | 64.07 | |||||||||||||
1927 | 50.98 | a | 54.05 | 54.00 | 60.05 | 66.65 | 71.08 | 79.40 | 77.27 | 70.38 | 67.45 | 59.65 | 49.50 | 63.37 | ||||||||||||
1928 | 53.95 | 53.88 | 54.97 | 59.70 | 68.39 | 71.38 | 76.85 | 77.58 | 76.77 | 64.39 | 56.92 | 49.92 | 63.72 | |||||||||||||
1929 | 48.35 | 48.25 | 53.97 | 56.13 | 66.87 | 71.42 | 78.10 | 82.16 | 72.13 | 67.84 | 59.13 | 57.26 | 63.47 | |||||||||||||
1930 | 49.29 | 54.66 | 55.47 | 61.57 | 59.34 | 70.15 | 77.60 | 77.40 | 69.58 | 63.85 | 58.87 | 50.55 | 62.36 | |||||||||||||
1931 | 53.69 | 54.36 | 58.34 | 64.45 | 69.11 | 71.47 | 83.13 | 80.34 | 72.63 | 64.94 | 53.53 | 48.11 | 64.51 | |||||||||||||
1932 | 46.23 | 50.64 | 57.97 | a | 58.57 | 63.98 | 70.70 | 76.18 | 76.29 | 73.38 | 64.40 | 62.22 | 48.82 | 62.45 | ||||||||||||
1933 | 46.40 | 49.75 | 56.73 | 57.12 | 59.71 | 69.15 | 78.13 | 77.55 | 71.37 | 69.24 | 60.95 | 54.19 | 62.52 | |||||||||||||
1934 | 53.84 | 55.70 | 64.44 | 65.05 | 69.03 | 69.13 | 79.15 | 78.55 | 74.00 | 67.08 | 57.50 | 53.74 | 65.60 | |||||||||||||
1935 | 50.40 | 54.09 | 51.65 | 60.08 | 63.60 | 72.88 | 77.08 | 79.21 | 74.50 | 63.03 | 54.68 | 51.90 | 62.76 | |||||||||||||
1936 | 52.56 | 51.22 | 57.45 | 61.35 | 67.39 | 73.42 | 80.82 | 79.37 | 74.05 | 65.73 | 58.20 | 52.06 | 64.47 | |||||||||||||
1937 | 41.44 | 51.86 | 54.63 | 60.37 | 66.47 | 72.87 | 79.55 | 79.81 | 77.55 | 68.26 | 58.92 | 54.92 | 63.89 | |||||||||||||
1938 | 53.60 | 51.00 | 53.21 | 59.68 | 64.90 | 69.27 | 75.11 | ----- | z | ----- | z | ----- | z | 55.03 | 55.32 | 59.68 | c | |||||||||
1939 | 49.90 | 47.23 | 54.00 | ----- | z | 62.92 | 73.14 | a | 77.34 | 79.29 | 74.98 | 72.16 | 59.48 | 54.94 | 64.13 | a | ||||||||||
1940 | 52.39 | 52.45 | 57.42 | 61.87 | 69.58 | 73.52 | 75.81 | 75.87 | 69.67 | 64.85 | 55.08 | 53.71 | 63.52 | |||||||||||||
1941 | 50.06 | 53.39 | 55.63 | 56.32 | 67.55 | 69.55 | 78.03 | 73.95 | 67.33 | 59.68 | 56.50 | 48.82 | 61.40 | |||||||||||||
1942 | 51.16 | 48.20 | 53.60 | 57.72 | 63.97 | 70.88 | 80.16 | 76.90 | 69.60 | 63.58 | 56.68 | 51.82 | 62.02 | |||||||||||||
1943 | 51.05 | 53.98 | 56.31 | 60.88 | 66.52 | 68.43 | 75.95 | 75.94 | 74.77 | 65.21 | 56.38 | 49.94 | 62.95 | |||||||||||||
1944 | 49.02 | 47.60 | 53.74 | 56.15 | 63.97 | 66.38 | 71.97 | 75.82 | 71.82 | 63.47 | 52.63 | 51.48 | 60.34 | |||||||||||||
1945 | 49.55 | 51.04 | 49.89 | 56.92 | 62.48 | 68.98 | 78.26 | 77.63 | 73.90 | 66.63 | 55.58 | 50.37 | 61.77 | |||||||||||||
1946 | 50.32 | 50.29 | 54.15 | 61.28 | 63.26 | 71.98 | 77.00 | ----- | z | 76.27 | d | 61.81 | 52.42 | 52.37 | 61.01 | a | ||||||||||
1947 | 49.16 | 55.12 | 56.74 | 62.20 | 67.03 | 69.62 | 77.32 | 75.50 | 75.85 | 63.98 | 52.30 | 49.42 | 62.85 | |||||||||||||
1948 | 52.74 | 48.95 | 50.81 | 58.86 | b | 63.47 | a | 68.45 | 73.65 | 73.09 | n | ----- | z | ----- | z | ----- | z | ----- | z | 59.56 | e | |||||
1949 | 41.76 | n | 47.77 | 51.34 | 61.47 | 63.39 | 71.10 | 74.77 | 75.42 | 74.75 | 62.42 | 62.28 | 49.87 | 63.14 | a | |||||||||||
1950 | 46.16 | 55.11 | 55.53 | 62.20 | 62.66 | 68.42 | 77.44 | 75.65 | 71.05 | 67.95 | 60.37 | 55.39 | i | 63.87 | a | |||||||||||
1951 | 49.61 | d | 50.70 | 55.52 | 58.10 | 63.55 | 68.00 | 77.00 | 76.29 | 73.95 | 63.27 | 55.38 | 47.73 | 61.59 | ||||||||||||
1952 | 45.73 | a | 49.34 | 48.48 | 56.75 | 65.68 | 65.70 | 75.71 | 76.95 | 73.62 | 65.52 | 50.22 | 47.71 | 60.12 | ||||||||||||
1953 | 51.93 | a | 48.34 | 52.85 | a | 55.15 | 58.74 | 67.38 | a | 79.29 | 74.50 | 72.15 | 61.55 | 54.33 | 47.35 | 60.30 | ||||||||||
1954 | 45.98 | a | 53.46 | 48.11 | 58.28 | 62.89 | 66.35 | 77.83 | a | 71.77 | 70.23 | 61.50 | 55.85 | d | 46.82 | f | 61.12 | a | ||||||||
1955 | 44.45 | 47.27 | 53.34 | 55.25 | 60.85 | a | 69.28 | 74.81 | 80.59 | i | 74.67 | 64.19 | 54.52 | 50.65 | 59.02 | a | ||||||||||
1956 | 50.71 | 46.24 | 54.06 | 56.93 | 64.74 | 72.17 | a | 77.24 | 73.58 | 76.75 | 61.10 | 56.60 | 51.61 | 61.81 | ||||||||||||
1957 | 47.52 | 55.19 | a | 54.61 | 58.31 | a | 61.74 | 73.95 | 78.73 | 77.08 | 72.80 | 60.95 | 52.28 | 52.27 | 62.12 | |||||||||||
1958 | 49.13 | 53.32 | 50.82 | a | 58.17 | 67.35 | 70.73 | 74.79 | 79.95 | 75.00 | a | 69.26 | 54.75 | 54.53 | 63.15 | |||||||||||
1959 | 52.45 | 48.57 | 58.10 | 64.07 | 63.18 | 73.52 | 81.39 | 77.58 | 71.43 | 66.76 | 58.57 | 52.08 | 63.97 | |||||||||||||
1960 | 46.31 | 49.97 | 58.21 | 61.48 | 66.73 | 75.02 | 80.34 | 77.44 | 77.08 | d | 65.08 | 53.98 | 49.16 | 63.40 | ||||||||||||
1961 | 52.52 | 53.25 | 53.65 | 61.53 | 62.93 | a | 75.48 | 79.84 | 80.16 | 71.95 | 65.95 | 54.47 | 51.24 | 63.58 | ||||||||||||
1962 | 50.84 | 49.93 | 50.05 | 63.97 | 63.31 | 70.77 | 76.21 | 79.21 | 74.55 | 65.66 | 57.37 | 53.39 | 62.94 | |||||||||||||
1963 | 48.80 | a | 59.39 | 53.29 | 55.65 | 65.21 | 69.07 | 76.47 | 77.40 | 76.52 | 66.03 | 56.37 | 51.40 | 62.97 | ||||||||||||
1964 | 47.77 | 50.09 | 52.34 | 57.48 | 63.40 | 70.48 | 79.47 | 78.08 | 71.75 | 70.68 | 52.90 | 50.45 | 62.07 | |||||||||||||
1965 | 51.37 | 52.04 | 54.15 | 58.73 | 63.97 | 67.03 | 77.39 | 80.18 | 69.63 | 69.92 | 57.07 | 49.97 | 62.62 | |||||||||||||
1966 | 47.74 | 49.00 | 56.32 | 62.13 | 66.45 | 72.57 | 77.74 | 79.42 | 74.10 | 66.13 | 56.78 | 51.03 | 63.29 | |||||||||||||
1967 | 50.39 | 53.11 | 54.68 | 50.63 | 64.47 | 67.62 | a | 81.23 | 83.55 | 75.25 | 68.73 | a | 60.98 | 47.31 | 63.16 | |||||||||||
1968 | 49.73 | 57.86 | 56.11 | 59.78 | 66.87 | 73.00 | 80.02 | 80.55 | k | 75.13 | 66.69 | 59.52 | 48.52 | 63.02 | a | |||||||||||
1969 | 53.31 | 49.45 | 53.19 | 60.07 | 68.08 | 69.97 | 79.82 | 82.76 | 77.40 | 62.39 | 58.32 | 51.31 | 63.84 | |||||||||||||
1970 | 50.89 | 54.50 | 54.89 | 55.55 | 66.45 | 72.10 | a | 80.61 | 81.68 | 72.98 | 64.68 | 57.43 | 48.76 | 63.38 | ||||||||||||
1971 | 50.06 | 51.04 | 55.29 | 58.05 | 62.35 | 71.28 | 80.08 | 81.95 | 75.90 | 62.85 | 55.35 | 45.74 | 62.50 | |||||||||||||
1972 | 48.68 | 54.21 | 61.55 | 60.98 | 67.27 | 74.90 | 81.26 | 79.02 | 72.55 | 62.48 | 54.30 | 49.18 | 63.86 | |||||||||||||
1973 | 47.44 | 51.77 | 50.02 | 57.48 | 68.18 | 75.12 | 77.89 | 78.44 | 71.23 | 65.52 | 54.57 | 51.32 | 62.41 | |||||||||||||
1974 | 50.02 | 51.68 | 55.37 | 59.77 | 65.71 | 75.23 | 79.10 | 77.61 | 76.88 | 65.02 | 56.70 | 48.90 | 63.50 | |||||||||||||
1975 | 51.15 | 50.38 | 52.60 | 52.95 | 64.31 | 69.38 | 76.85 | 74.98 | 76.07 | 63.42 | 56.88 | 51.34 | 61.69 | |||||||||||||
1976 | 53.53 | 53.11 | a | 53.63 | 56.57 | 67.11 | 72.67 | 76.81 | 73.76 | 71.53 | 65.53 | 58.93 | c | 51.02 | 62.85 | |||||||||||
1977 | 50.92 | a | 55.23 | 50.02 | 61.65 | 60.47 | 73.82 | 79.31 | 79.05 | 73.25 | 68.98 | 59.87 | 56.17 | b | 64.06 | |||||||||||
1978 | 52.40 | a | 52.64 | 57.62 | a | 58.00 | 67.13 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.56 | g | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.94 | 51.96 | 54.46 | 59.01 | 64.54 | 71.14 | 77.68 | 77.30 | 72.78 | 64.77 | 56.69 | 50.79 | 62.80 | |||||||||||||
S.D. | 2.62 | 2.94 | 3.12 | 2.93 | 2.70 | 2.82 | 2.27 | 2.58 | 2.85 | 3.11 | 2.77 | 2.55 | 1.08 | |||||||||||||
SKEW | -0.59 | 0.18 | 0.56 | -0.18 | -0.44 | -0.27 | -0.49 | -0.22 | -0.41 | -0.34 | 0.11 | 0.16 | -0.22 | |||||||||||||
MAX | 54.79 | 59.39 | 64.44 | 65.05 | 70.56 | 77.25 | 83.13 | 83.55 | 78.38 | 72.16 | 62.28 | 57.26 | 65.60 | |||||||||||||
MIN | 41.44 | 46.24 | 48.11 | 50.63 | 55.79 | 62.37 | 71.06 | 69.47 | 64.02 | 54.94 | 50.22 | 44.35 | 60.12 | |||||||||||||
YRS | 83 | 83 | 85 | 81 | 83 | 81 | 80 | 78 | 83 | 82 | 84 | 81 | 67 |