YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1892 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.13 | p | ----- | z |
1893 | 52.06 | 46.92 | c | 53.90 | 64.23 | 71.16 | 83.69 | a | 82.52 | 75.77 | 72.07 | 65.45 | 54.20 | 51.03 | a | 64.42 | ||||||||||
1894 | 46.23 | 41.18 | 55.42 | 65.70 | 74.77 | 77.90 | 80.65 | 76.81 | 71.50 | 67.26 | 61.73 | 48.55 | 63.97 | |||||||||||||
1895 | 45.23 | 43.93 | 57.67 | a | 70.27 | 70.48 | b | 79.21 | a | 78.10 | 77.39 | 75.90 | 62.68 | 51.34 | a | 44.65 | 63.07 | |||||||||
1896 | 51.52 | 49.72 | 55.77 | 65.20 | 75.87 | 83.63 | 79.94 | 81.61 | 73.59 | a | 59.57 | a | 55.33 | 53.35 | 65.43 | |||||||||||
1897 | 40.81 | 47.14 | 52.45 | 63.60 | 68.65 | 78.17 | 80.52 | 78.39 | 74.93 | 62.80 | a | 60.17 | 45.47 | a | 62.76 | |||||||||||
1898 | 45.00 | 54.93 | 54.81 | 64.37 | 71.74 | 78.83 | 80.26 | 78.90 | 74.43 | 65.71 | 51.43 | 42.27 | a | 63.56 | ||||||||||||
1899 | 48.35 | 46.89 | a | 59.40 | a | 68.10 | 74.74 | 81.87 | 82.84 | 84.94 | 74.40 | 63.00 | 54.00 | 48.55 | 65.59 | |||||||||||
1900 | 49.71 | 49.70 | a | 58.00 | 61.33 | 73.23 | 80.73 | 79.58 | 78.90 | 69.70 | 59.74 | 53.83 | 46.87 | 63.44 | ||||||||||||
1901 | 47.14 | c | 45.20 | c | 55.69 | b | 64.52 | a | 72.23 | 84.53 | 87.10 | a | 84.50 | a | 75.15 | d | 66.97 | a | 58.42 | d | 51.52 | f | 67.40 | a | ||
1902 | 49.35 | e | 54.50 | b | 53.32 | 70.23 | 74.68 | i | 87.93 | c | 85.26 | 86.84 | 78.77 | 69.71 | 54.80 | 49.03 | 67.25 | a | ||||||||
1903 | 47.97 | 39.50 | 56.06 | 64.33 | 73.16 | 73.70 | 89.23 | 86.72 | b | 76.27 | 68.77 | 62.57 | 52.48 | 65.90 | ||||||||||||
1904 | 45.87 | 56.93 | 62.13 | 67.13 | 74.45 | 80.40 | 85.03 | 84.19 | 78.27 | 64.55 | 60.53 | 44.83 | a | 67.03 | ||||||||||||
1905 | 44.61 | 46.07 | 56.97 | 60.53 | 73.06 | 84.67 | 85.03 | 87.58 | 77.93 | 66.61 | 53.57 | 41.84 | 64.87 | |||||||||||||
1906 | 48.42 | 50.82 | 56.52 | 64.13 | 75.61 | 85.57 | 79.39 | 83.81 | 78.73 | 67.48 | 51.67 | 53.42 | 66.30 | |||||||||||||
1907 | 49.74 | 60.00 | 64.35 | 66.37 | 67.26 | 81.20 | 87.65 | 84.13 | 80.53 | 67.42 | 53.73 | 50.55 | 67.74 | |||||||||||||
1908 | 50.55 | 49.24 | 62.52 | 65.10 | 71.58 | 84.28 | a | 84.13 | 82.68 | 81.14 | a | 67.76 | b | 55.60 | 51.10 | 67.14 | ||||||||||
1909 | 57.14 | b | 52.44 | a | 57.65 | 68.43 | 74.87 | 89.00 | 90.00 | a | 84.20 | a | 79.53 | 70.35 | 62.10 | 42.74 | 69.04 | |||||||||
1910 | 51.39 | 51.14 | 66.52 | 68.23 | 74.58 | 86.60 | 91.17 | a | 86.35 | 81.23 | 66.83 | a | 60.52 | a | ----- | z | 71.32 | a | ||||||||
1911 | 53.04 | c | 44.21 | 58.26 | 63.03 | 72.61 | 80.37 | 78.94 | 83.55 | 78.17 | 62.10 | a | 53.00 | a | 40.26 | 63.96 | ||||||||||
1912 | 50.42 | 47.24 | 50.32 | 57.23 | 69.00 | 73.87 | 81.84 | 79.28 | b | 71.13 | 64.26 | 57.70 | 44.43 | a | 62.23 | |||||||||||
1913 | 45.90 | 49.57 | 52.97 | 63.67 | 74.45 | 76.72 | a | 85.03 | 83.87 | 72.63 | 62.52 | 58.07 | 38.60 | a | 63.67 | |||||||||||
1914 | 52.71 | 50.48 | a | 58.55 | 64.66 | a | 69.53 | a | 81.53 | 79.23 | a | 81.48 | 78.93 | 67.00 | 61.57 | 41.42 | 65.59 | |||||||||
1915 | 43.90 | 48.00 | 47.35 | 61.07 | 68.07 | a | 81.43 | 82.42 | 78.48 | 74.30 | 69.00 | 59.10 | 50.61 | 63.65 | ||||||||||||
1916 | 46.75 | c | 56.03 | 62.35 | 60.10 | 71.03 | 82.77 | 84.90 | 79.94 | 76.23 | 62.84 | 52.40 | 43.26 | 64.88 | ||||||||||||
1917 | 46.81 | 50.71 | 53.68 | 62.17 | 63.06 | 82.43 | g | 86.32 | 81.04 | d | 78.00 | 71.00 | 62.57 | 58.84 | 64.93 | a | ||||||||||
1918 | 42.26 | 52.41 | a | 57.39 | 59.23 | 70.94 | 84.79 | a | 84.26 | 84.74 | 78.00 | 68.35 | 54.23 | 44.10 | 65.06 | |||||||||||
1919 | 40.06 | 45.14 | 49.58 | 60.37 | 69.19 | 75.93 | 81.29 | 84.42 | 76.55 | a | 62.87 | 54.70 | 54.57 | a | 62.89 | |||||||||||
1920 | 51.10 | 50.62 | 54.58 | 58.41 | a | 70.58 | 78.80 | 84.77 | 78.55 | 76.57 | 66.16 | 56.17 | 49.10 | 64.62 | ||||||||||||
1921 | 50.90 | 52.64 | 59.73 | a | 61.48 | a | 70.84 | 76.60 | 80.13 | 80.81 | 81.37 | 73.42 | 63.53 | 55.77 | 67.27 | |||||||||||
1922 | 46.74 | 50.71 | 54.35 | 62.60 | 73.65 | 81.77 | 85.71 | 85.42 | 79.07 | a | 68.61 | 50.30 | 52.45 | 65.95 | ||||||||||||
1923 | 54.10 | 48.19 | a | 50.03 | 59.23 | 71.71 | 81.23 | 84.13 | 78.58 | 73.07 | 58.19 | 53.97 | 42.70 | a | 62.93 | |||||||||||
1924 | 44.61 | 50.38 | 48.16 | 64.20 | 72.52 | 86.50 | 83.17 | g | ----- | z | 77.87 | g | 69.39 | 63.04 | e | 45.74 | 60.50 | c | ||||||||
1925 | 45.68 | 57.04 | 63.00 | 68.76 | a | 75.19 | 80.59 | h | 86.04 | g | 79.58 | g | 75.73 | 64.94 | 56.10 | 46.11 | c | 61.39 | c | |||||||
1926 | 40.66 | b | 56.04 | a | 50.77 | 59.87 | 69.28 | f | 81.33 | 82.41 | d | 86.32 | f | 79.45 | a | 72.90 | 61.19 | c | 48.23 | e | 63.28 | b | ||||
1927 | 54.23 | 52.71 | 57.19 | e | 70.52 | c | 79.58 | 81.00 | 84.93 | a | 80.87 | h | 77.16 | k | ----- | z | 63.66 | a | 44.74 | 65.40 | c | |||||
1928 | 53.87 | 47.00 | 58.00 | 60.80 | ----- | z | 82.43 | 83.58 | 78.97 | 81.79 | f | 68.60 | a | 51.79 | a | 46.84 | 63.19 | b | ||||||||
1929 | 46.45 | 42.39 | 54.71 | 63.55 | a | 69.31 | b | 80.83 | 80.87 | 79.58 | l | 75.96 | f | 63.68 | 49.70 | 53.97 | 60.55 | b | ||||||||
1930 | 41.55 | 57.71 | 52.90 | a | 69.90 | 69.03 | 82.00 | 80.52 | 80.94 | 76.63 | 62.97 | 54.07 | 46.32 | 64.54 | ||||||||||||
1931 | 49.94 | 49.54 | 51.13 | 61.33 | 69.84 | 82.30 | 83.29 | 80.23 | 78.27 | 67.35 | 53.37 | 48.55 | 64.59 | |||||||||||||
1932 | 42.73 | a | 53.86 | 52.90 | 65.27 | 69.68 | 78.37 | 84.00 | 81.45 | 75.00 | 65.17 | a | 61.30 | 42.94 | 64.39 | |||||||||||
1933 | 49.35 | 46.75 | 59.16 | 60.53 | 72.65 | 80.10 | 85.00 | 80.58 | 80.77 | 71.97 | 60.53 | 58.30 | a | 67.14 | ||||||||||||
1934 | 48.32 | 54.57 | 62.52 | 67.73 | 77.10 | a | 86.16 | k | 90.84 | 87.87 | 78.23 | 73.84 | 57.30 | 49.97 | 68.03 | a | ||||||||||
1935 | 53.42 | 51.32 | 58.06 | 62.60 | 63.97 | 81.87 | 84.55 | 80.32 | 74.80 | 66.65 | 56.07 | 47.90 | 65.13 | |||||||||||||
1936 | 47.00 | 52.18 | a | 59.52 | 65.10 | 71.97 | 87.17 | 86.23 | 88.52 | 77.60 | 66.03 | 58.40 | 50.13 | 67.49 | ||||||||||||
1937 | 40.87 | 51.25 | 49.87 | 65.37 | 72.81 | 79.70 | 84.23 | 88.06 | 78.10 | 63.90 | 51.69 | a | 43.77 | a | 64.13 | |||||||||||
1938 | 38.80 | a | 47.36 | c | 55.58 | 54.50 | 60.55 | ----- | z | 82.39 | 84.84 | 75.33 | 68.65 | 59.10 | a | 58.55 | 62.33 | a | ||||||||
1939 | 53.39 | 51.75 | 59.10 | 64.87 | 72.61 | 84.03 | 86.16 | 84.23 | 83.20 | 75.26 | 59.93 | 55.06 | 69.13 | |||||||||||||
1940 | 46.32 | 48.93 | 59.39 | 68.77 | 74.87 | 81.23 | 87.13 | 83.26 | 81.81 | i | 82.74 | 67.66 | a | 49.59 | i | 70.03 | b | |||||||||
1941 | 47.45 | 52.38 | b | 49.65 | 56.70 | 69.97 | 75.55 | a | 81.06 | 80.29 | 74.47 | 62.74 | 58.10 | 52.84 | 63.43 | |||||||||||
1942 | 52.50 | a | 46.21 | 55.61 | 64.23 | 72.10 | 81.57 | 84.09 | i | 81.45 | 73.55 | a | 65.35 | 62.18 | b | 54.40 | a | 64.47 | a | |||||||
1943 | 51.10 | 59.86 | 63.11 | d | 70.73 | 73.71 | 81.50 | 85.97 | a | 86.29 | 79.10 | 67.73 | a | 58.37 | 44.21 | b | 68.47 | |||||||||
1944 | 54.70 | d | ----- | z | ----- | z | ----- | z | ----- | z | 80.80 | 83.67 | a | 84.19 | 76.27 | 68.07 | a | 54.30 | 48.74 | 68.84 | d | |||||
1945 | ----- | z | 55.29 | 57.93 | b | 62.90 | a | 74.97 | a | 80.31 | a | 83.55 | 83.77 | 77.90 | a | 70.30 | a | 64.41 | c | 52.94 | 69.48 | a | ||||
1946 | 50.23 | a | 55.86 | 58.47 | a | 72.03 | 71.16 | 85.30 | 85.39 | 83.37 | a | 80.07 | 67.77 | a | 57.66 | a | 57.27 | a | 68.71 | |||||||
1947 | 50.68 | 54.75 | 59.10 | a | 68.87 | 74.82 | i | 82.80 | 86.48 | 86.53 | p | 80.68 | e | 72.52 | 52.90 | a | 46.58 | 65.54 | b | |||||||
1948 | 46.53 | a | 43.00 | a | 46.04 | c | 69.67 | 74.43 | j | 84.03 | 86.00 | b | 89.58 | 78.80 | 68.87 | a | 55.77 | 52.07 | a | 65.49 | a | |||||
1949 | 43.10 | a | 50.39 | 57.65 | 63.30 | 71.35 | k | 81.52 | g | 83.15 | e | 84.11 | d | 79.46 | d | 66.14 | i | 64.47 | k | 51.57 | c | 64.09 | d | |||
1950 | 53.04 | d | 55.89 | a | 57.79 | c | 68.90 | 74.68 | 83.07 | 82.68 | 81.84 | 75.67 | 80.10 | 65.00 | a | 59.68 | 69.86 | |||||||||
1951 | 50.52 | 55.36 | 57.39 | 66.00 | 75.00 | 83.37 | 89.00 | 85.13 | 80.97 | 70.71 | 57.53 | 52.71 | 68.64 | |||||||||||||
1952 | 52.45 | 54.86 | 52.77 | a | 65.38 | a | 74.13 | 87.27 | 83.71 | 85.55 | 77.52 | a | 78.52 | 52.14 | b | 47.65 | 67.66 | |||||||||
1953 | 58.48 | 50.46 | 60.96 | d | 66.73 | h | 70.79 | c | 88.00 | c | 87.37 | d | 84.54 | c | 81.43 | i | 81.00 | x | 60.10 | a | 45.31 | o | 70.09 | d | ||
1954 | 51.48 | 60.36 | 54.55 | 72.37 | 73.80 | a | 84.43 | 86.77 | 82.61 | 79.23 | 68.73 | a | 61.17 | a | 51.45 | 68.91 | ||||||||||
1955 | 44.06 | 47.00 | 57.35 | 63.77 | 70.87 | 79.27 | 82.58 | 81.97 | 80.10 | 70.61 | 58.93 | 53.30 | a | 65.82 | ||||||||||||
1956 | 53.80 | a | 46.86 | 60.16 | 64.83 | 78.42 | 85.87 | 84.94 | 83.45 | 82.93 | 70.16 | 55.17 | 51.97 | 68.21 | ||||||||||||
1957 | 47.13 | 56.89 | 54.45 | 60.43 | 66.13 | 83.67 | 85.10 | 78.97 | 77.03 | 60.97 | 43.70 | 52.39 | 63.90 | |||||||||||||
1958 | 44.61 | 53.04 | 45.57 | a | 57.63 | 73.58 | 82.70 | 86.65 | 83.42 | 74.10 | 65.16 | 60.00 | 55.84 | 65.19 | ||||||||||||
1959 | 48.13 | 48.04 | 56.68 | 63.57 | 70.71 | 80.80 | 82.65 | 81.42 | 77.87 | 66.55 | 56.90 | 46.42 | 64.98 | |||||||||||||
1960 | 41.68 | 43.66 | 58.74 | 66.60 | 73.48 | 83.63 | 81.42 | 83.74 | 79.10 | 66.65 | 59.20 | 39.16 | 64.75 | |||||||||||||
1961 | 46.55 | 50.71 | 54.81 | 62.53 | 74.81 | 81.80 | 82.74 | 78.68 | 73.17 | 67.74 | 52.03 | 45.26 | 64.24 | |||||||||||||
1962 | 46.42 | 52.58 | b | 50.35 | 67.30 | 76.90 | 80.07 | 80.81 | 85.45 | 74.60 | 69.97 | 57.87 | 51.32 | 66.14 | ||||||||||||
1963 | 43.94 | 50.04 | 56.29 | 66.27 | 75.29 | 81.43 | 88.23 | 80.19 | 77.07 | 68.26 | 54.69 | a | ----- | z | 67.43 | a | ||||||||||
1964 | 42.17 | b | 44.93 | b | 51.70 | a | 62.52 | a | 73.71 | 82.77 | 87.03 | 83.32 | 75.32 | b | 71.94 | 55.30 | 49.17 | a | 64.99 | |||||||
1965 | 48.16 | 49.44 | a | 49.39 | c | 64.57 | 70.39 | 77.57 | 83.30 | a | 79.94 | 73.52 | a | 72.03 | 60.97 | 49.52 | 64.90 | |||||||||
1966 | 45.20 | a | 47.11 | 59.32 | 66.97 | a | 79.74 | d | 81.67 | o | 87.24 | f | 80.71 | 78.50 | b | 66.87 | 59.37 | 50.23 | 63.40 | b | ||||||
1967 | 49.35 | 52.36 | 63.35 | 64.07 | 69.36 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.28 | h | ||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.26 | 84.48 | 77.17 | 63.06 | 57.43 | 52.53 | a | 70.16 | f | |||||
1970 | 48.67 | a | 55.21 | 52.43 | a | 59.03 | 73.97 | 77.77 | 84.06 | 84.10 | 75.00 | b | 60.63 | a | 55.37 | 53.23 | 64.96 | |||||||||
1971 | 49.77 | 48.43 | 58.81 | 62.10 | 70.40 | a | 83.67 | 82.26 | 76.87 | 73.80 | 64.10 | 56.54 | b | 46.19 | 64.41 | |||||||||||
1972 | 54.32 | 54.71 | a | 63.67 | a | 66.10 | a | 69.74 | 79.57 | 78.35 | 77.81 | 72.60 | 64.68 | 46.87 | 50.26 | 64.89 | ||||||||||
1973 | 45.58 | 43.93 | 49.58 | 53.24 | a | 67.87 | 77.83 | 80.42 | 82.61 | 74.47 | 69.23 | 60.00 | 50.87 | 62.97 | ||||||||||||
1974 | 44.00 | 49.04 | 61.23 | 61.70 | 76.13 | 82.10 | 82.23 | 76.65 | 68.67 | 63.52 | 53.67 | 43.19 | 63.51 | |||||||||||||
1975 | 44.90 | 45.68 | 51.45 | 56.97 | 67.39 | 78.57 | 79.74 | 83.26 | 72.13 | 68.77 | 55.90 | 51.45 | 63.02 | |||||||||||||
1976 | 47.97 | 54.34 | 54.35 | 62.70 | 68.81 | 80.13 | 81.33 | a | 79.13 | 72.93 | 61.94 | 52.77 | 50.74 | 63.93 | ||||||||||||
1977 | 43.16 | 50.04 | 52.42 | 61.67 | 70.94 | 82.27 | 83.55 | 82.45 | 78.45 | a | 70.48 | 59.47 | 55.68 | 65.88 | ||||||||||||
1978 | 48.26 | 48.14 | 58.83 | a | 68.63 | 69.52 | 81.34 | a | 83.45 | 82.10 | 77.67 | 69.77 | 54.76 | a | 48.14 | b | 65.88 | |||||||||
1979 | 41.50 | c | 48.07 | 56.26 | 63.70 | 68.74 | 77.97 | 85.90 | b | 79.33 | a | 77.37 | 73.93 | a | 52.07 | 52.81 | 64.80 | |||||||||
1980 | 51.77 | a | 52.43 | a | 55.80 | a | 61.07 | 66.00 | a | 85.68 | b | 91.68 | c | 84.00 | 76.83 | 67.33 | a | 55.86 | a | 56.81 | 67.10 | |||||
1981 | 53.42 | 57.46 | 52.35 | 66.87 | g | 71.25 | c | 84.50 | b | 83.68 | c | 76.16 | 74.90 | a | 63.00 | 64.00 | 54.72 | b | 66.86 | a | ||||||
1982 | 50.54 | c | 45.50 | j | 59.50 | k | 63.65 | d | 66.38 | g | 77.04 | b | 83.29 | 82.63 | a | 74.03 | 65.00 | k | 53.96 | c | 49.03 | b | 66.77 | d | ||
1983 | 51.34 | b | 47.23 | b | 52.79 | c | 56.31 | a | 69.13 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.36 | g |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 48.09 | 50.52 | 55.97 | 63.93 | 71.85 | 81.64 | 83.93 | 82.30 | 76.64 | 67.40 | 56.90 | 49.42 | 65.39 | |||||||||||||
S.D. | 4.19 | 4.44 | 4.40 | 3.97 | 3.44 | 3.21 | 2.97 | 3.11 | 2.98 | 4.39 | 4.29 | 4.81 | 1.87 | |||||||||||||
SKEW | -0.01 | 0.02 | -0.09 | -0.19 | -0.45 | -0.09 | 0.35 | -0.03 | -0.21 | 0.76 | -0.12 | -0.09 | 0.59 | |||||||||||||
MAX | 58.48 | 60.36 | 66.52 | 72.37 | 79.74 | 89.00 | 91.68 | 89.58 | 83.20 | 82.74 | 67.66 | 59.68 | 69.86 | |||||||||||||
MIN | 38.80 | 39.50 | 45.57 | 53.24 | 60.55 | 73.70 | 78.10 | 75.77 | 68.67 | 58.19 | 43.70 | 38.60 | 62.23 | |||||||||||||
YRS | 88 | 87 | 87 | 86 | 80 | 81 | 84 | 82 | 82 | 84 | 87 | 83 | 63 |