YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | 49.76 | 54.34 | 55.88 | a | 64.27 | 72.61 | 83.00 | 86.73 | 85.03 | a | 77.08 | 66.08 | a | 53.47 | 49.48 | 66.48 | ||||||||||
1894 | 44.68 | 48.11 | 55.52 | 65.52 | 72.97 | a | 77.67 | 86.44 | 82.77 | 77.68 | 65.77 | 56.72 | 49.65 | 65.29 | ||||||||||||
1895 | 46.50 | 47.73 | 54.71 | 61.80 | 71.08 | 80.18 | 83.44 | 82.31 | d | 77.03 | 65.69 | 50.58 | 43.31 | 63.70 | ||||||||||||
1896 | 48.58 | 50.34 | 57.92 | 61.68 | 72.10 | 82.23 | 83.08 | a | 80.58 | 76.31 | c | 64.63 | 54.58 | 48.61 | 65.06 | |||||||||||
1897 | 46.08 | a | 47.07 | 52.00 | 64.00 | 73.00 | a | 77.30 | 81.97 | 82.39 | 80.16 | a | 65.63 | 56.50 | 45.76 | 64.32 | ||||||||||
1898 | 41.89 | 53.66 | 53.60 | 66.93 | 67.73 | 78.10 | 84.50 | 82.77 | 77.58 | 65.45 | 53.80 | 43.16 | b | 64.10 | ||||||||||||
1899 | 46.11 | 48.20 | 56.27 | 64.18 | 67.08 | 79.05 | a | 84.76 | 81.71 | 77.82 | 63.84 | 53.87 | 46.56 | 64.12 | ||||||||||||
1900 | 50.61 | 50.95 | 61.03 | 59.38 | 72.42 | 80.00 | 85.61 | 80.08 | 74.47 | 65.92 | 56.93 | 47.60 | 65.42 | |||||||||||||
1901 | 49.34 | 50.83 | a | 54.81 | b | 60.87 | 70.65 | a | 77.25 | 85.69 | 84.79 | 77.30 | 67.67 | a | 58.97 | 47.53 | 65.47 | |||||||||
1902 | 48.40 | 51.68 | 53.40 | 66.12 | a | 70.93 | a | 81.22 | a | 82.37 | 82.24 | 77.28 | 68.63 | a | 53.84 | b | 48.52 | a | 65.39 | |||||||
1903 | 47.90 | b | 46.94 | a | 55.68 | a | 64.33 | 70.23 | 78.72 | 85.47 | 84.65 | 75.78 | 64.90 | 58.07 | 47.97 | a | 65.05 | |||||||||
1904 | 43.43 | d | 55.36 | 60.85 | d | 64.09 | a | 71.26 | 80.78 | a | 84.79 | 82.56 | 74.83 | a | 65.48 | 55.92 | 48.97 | 65.69 | ||||||||
1905 | 52.11 | 53.57 | 57.65 | 60.68 | 66.87 | 78.13 | 82.23 | 83.34 | 77.22 | 67.45 | 56.26 | a | 46.13 | a | 65.14 | |||||||||||
1906 | 45.77 | 53.80 | 57.90 | a | 61.79 | a | 69.39 | 78.88 | 82.60 | 78.78 | a | 75.14 | a | 64.32 | 55.57 | b | 51.32 | 64.61 | ||||||||
1907 | 50.47 | 55.04 | 57.92 | 63.16 | a | 65.44 | 74.59 | b | 82.70 | a | 80.45 | 76.52 | 66.27 | 55.13 | 48.24 | 64.66 | ||||||||||
1908 | 50.16 | 51.67 | f | 57.40 | 62.10 | 66.65 | a | 76.23 | b | 80.80 | a | 80.35 | e | 75.40 | 61.80 | c | 56.58 | f | 49.35 | 66.03 | b | |||||
1909 | 51.74 | 50.29 | b | 51.73 | a | 61.87 | c | 67.19 | b | 78.03 | 82.97 | 80.64 | b | 73.98 | 66.38 | c | ----- | z | ----- | z | 66.48 | b | ||||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.44 | 55.92 | 50.59 | c | 57.31 | i | ||
1911 | 52.37 | 51.60 | b | 61.08 | 62.14 | a | 66.95 | a | 78.27 | 79.29 | 80.58 | 76.58 | 63.91 | c | 52.06 | d | 43.08 | 63.99 | ||||||||
1912 | 47.83 | a | 49.53 | 54.74 | b | 56.29 | a | 66.74 | 77.70 | 77.57 | b | 76.87 | a | 71.36 | a | 61.62 | b | 53.74 | a | 44.43 | a | 61.54 | ||||
1913 | 44.07 | b | 49.15 | b | 53.68 | a | 61.55 | b | 66.50 | a | 73.85 | 78.84 | c | 77.77 | a | 69.84 | a | ----- | z | 57.98 | d | 46.60 | 61.80 | a | ||
1914 | 52.02 | b | 51.68 | 57.84 | 63.22 | 69.11 | c | 78.42 | 80.90 | 81.42 | 77.32 | 65.02 | a | 59.52 | b | 46.95 | c | 65.28 | ||||||||
1915 | 46.60 | 51.38 | 54.55 | 61.45 | 65.78 | a | 77.63 | 81.60 | 80.52 | 73.05 | 65.30 | a | 54.58 | 47.31 | 63.31 | |||||||||||
1916 | 49.24 | d | 55.14 | a | 60.39 | 61.77 | 66.77 | 76.15 | 80.76 | 79.12 | b | 74.17 | 62.91 | b | 52.38 | 43.81 | b | 63.55 | ||||||||
1917 | 47.21 | c | 50.61 | 52.24 | 60.68 | 65.35 | 78.88 | 83.31 | 79.93 | a | 76.72 | 67.63 | a | 57.00 | 51.29 | 64.24 | ||||||||||
1918 | 46.00 | a | 52.62 | 59.60 | b | 61.78 | a | 66.82 | 81.62 | 82.74 | 79.15 | a | 76.67 | a | 66.35 | a | 53.50 | c | 45.61 | 64.37 | ||||||
1919 | 45.15 | a | 48.06 | a | 54.71 | 63.45 | a | 69.00 | d | 78.70 | b | 80.61 | 80.12 | a | 75.75 | 62.81 | 54.92 | 50.90 | b | 63.68 | ||||||
1920 | 50.55 | 54.62 | 55.22 | b | 58.55 | a | 70.08 | a | 78.40 | 83.63 | 79.82 | a | 74.42 | 61.95 | a | 53.05 | 46.95 | 63.94 | ||||||||
1921 | 50.85 | 54.86 | 62.27 | 62.07 | 68.97 | b | 78.85 | c | 80.64 | b | 79.56 | 77.88 | a | 70.09 | c | 57.02 | b | 52.98 | a | 66.34 | ||||||
1922 | 47.58 | 51.13 | a | 54.80 | a | 59.39 | b | 71.10 | a | 81.15 | c | 84.19 | b | 83.03 | b | 77.81 | c | 65.39 | c | 50.70 | b | 56.98 | j | 66.03 | a | |
1923 | 51.65 | d | 51.80 | a | 54.74 | d | 62.67 | 71.75 | c | 76.71 | a | 82.61 | 78.85 | a | 73.50 | 62.20 | a | 54.82 | 47.95 | b | 64.10 | |||||
1924 | 45.53 | 53.07 | a | 54.45 | a | 60.24 | c | 71.02 | 81.13 | 83.60 | b | 83.29 | 83.85 | 67.82 | 56.67 | 45.87 | 65.55 | |||||||||
1925 | 44.87 | 53.48 | 58.68 | a | 63.70 | 71.06 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.18 | h | |||
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | 63.36 | w | 70.16 | 78.18 | 88.06 | 83.34 | 77.33 | 67.55 | 53.50 | 46.74 | 70.61 | d | ||||||||
1952 | 47.24 | 48.14 | a | 50.53 | 62.28 | 72.85 | 79.33 | 83.26 | 83.87 | 80.09 | a | 70.18 | 51.35 | 45.21 | 64.53 | |||||||||||
1953 | 49.77 | a | 48.62 | 56.74 | 61.82 | 65.40 | 80.25 | 88.35 | e | 84.83 | k | 79.42 | 69.44 | f | 57.02 | 44.45 | 63.18 | b | ||||||||
1954 | 48.37 | 55.48 | 57.10 | a | 67.90 | 71.45 | b | 78.98 | 85.68 | 81.13 | 79.82 | 69.71 | 57.50 | 48.73 | 66.82 | |||||||||||
1955 | 45.16 | 45.31 | a | 55.85 | a | 60.12 | d | 68.71 | c | ----- | z | 81.56 | 81.45 | 76.71 | d | 68.60 | j | 54.27 | 51.32 | 62.05 | b | |||||
1956 | 51.10 | 46.84 | 56.65 | 62.38 | 73.10 | 83.75 | 85.15 | 82.61 | 80.10 | 67.36 | t | 49.30 | 46.44 | 65.22 | a | |||||||||||
1957 | 52.50 | c | 59.13 | b | 57.69 | 62.43 | a | 68.32 | c | 82.39 | b | 86.97 | b | 83.03 | 77.32 | 64.56 | g | 49.58 | 48.93 | c | 66.21 | a | ||||
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | 49.79 | 49.81 | b | 57.04 | e | 68.12 | b | 71.58 | 85.48 | a | 88.66 | 81.83 | e | 76.93 | a | 66.21 | 53.74 | c | 48.84 | b | 66.50 | |||||
1960 | 43.61 | 45.84 | 59.10 | 65.12 | b | 71.68 | 83.97 | a | 86.72 | b | 86.08 | a | 81.30 | b | 66.11 | 53.98 | g | 45.78 | a | 66.85 | a | |||||
1961 | 49.52 | c | 53.09 | f | 57.83 | m | 64.79 | r | 72.15 | 83.34 | h | 85.85 | u | 81.83 | p | 77.04 | f | 65.27 | 53.02 | b | 48.50 | 57.69 | g | |||
1962 | 46.48 | 52.32 | c | 48.42 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.40 | j | |
1963 | ----- | z | 54.11 | f | 56.60 | 61.13 | 73.37 | 77.38 | 88.37 | 81.56 | 79.82 | 70.21 | 56.53 | 47.15 | 69.21 | b | ||||||||||
1964 | 42.21 | 45.03 | 52.83 | b | 60.53 | 70.39 | 78.62 | 86.10 | 83.07 | a | 75.18 | 68.81 | 51.15 | 47.87 | 63.48 | |||||||||||
1965 | 49.97 | 49.71 | 54.08 | 62.13 | 67.95 | a | 75.50 | 86.18 | a | 85.00 | a | 75.55 | 67.74 | 57.85 | 49.45 | 65.09 | ||||||||||
1966 | 45.37 | 46.33 | a | 56.43 | a | 63.43 | 73.69 | 80.15 | 86.28 | a | 83.61 | 76.17 | 64.81 | 55.70 | 45.81 | b | 64.82 | |||||||||
1967 | 44.17 | a | 50.98 | 58.37 | 59.05 | 68.26 | 77.67 | 85.08 | 82.34 | 77.35 | 65.68 | 56.31 | c | 43.16 | b | 64.03 | ||||||||||
1968 | 46.58 | a | 54.81 | 54.02 | 58.59 | a | 69.29 | 79.93 | 83.52 | 79.53 | 76.13 | 67.63 | a | 53.45 | a | 43.58 | 63.92 | |||||||||
1969 | 49.85 | 48.45 | 50.89 | 63.53 | a | 72.21 | 78.63 | 87.42 | a | 86.84 | b | 80.32 | 64.34 | 54.37 | 47.27 | 65.34 | ||||||||||
1970 | 44.60 | 52.29 | 52.27 | a | 57.05 | 72.37 | 81.90 | 89.30 | a | 86.17 | a | 76.83 | 63.43 | a | 55.17 | 48.32 | 64.97 | |||||||||
1971 | 46.42 | 49.80 | a | 58.26 | 62.41 | a | 68.44 | 80.58 | 90.07 | a | 84.13 | 78.43 | 61.77 | a | 52.68 | 43.62 | a | 64.72 | ||||||||
1972 | 45.40 | 50.86 | a | 62.53 | a | 62.52 | a | 71.21 | 81.98 | 87.98 | a | 84.32 | 78.67 | 66.40 | 50.19 | a | 45.48 | a | 65.63 | |||||||
1973 | 43.92 | 49.95 | 49.87 | a | 57.90 | a | 72.63 | 79.78 | 85.21 | 85.60 | a | ----- | z | 67.90 | 54.48 | 47.18 | 63.13 | a | ||||||||
1974 | 48.15 | 48.96 | 57.23 | 62.03 | 72.28 | b | 85.35 | 85.61 | c | 83.42 | 78.32 | 67.44 | 54.07 | 43.84 | 65.56 | |||||||||||
1975 | 46.53 | 48.22 | a | 53.97 | 56.90 | 67.68 | 78.92 | 85.74 | 84.92 | 79.30 | 65.80 | a | 54.22 | 48.03 | 64.19 | |||||||||||
1976 | 47.13 | ----- | z | ----- | z | 61.88 | 72.74 | 81.15 | 85.19 | 84.27 | 77.27 | 64.32 | 54.77 | 46.69 | 67.54 | b | ||||||||||
1977 | 48.94 | 52.57 | 52.48 | 63.95 | 69.05 | 81.58 | 87.58 | 86.73 | 80.75 | 69.81 | 56.65 | 51.61 | 66.81 | |||||||||||||
1978 | 50.21 | 51.00 | 58.37 | 61.48 | 70.00 | 81.70 | 86.52 | 83.58 | 78.22 | 70.16 | 55.86 | a | 44.63 | a | 65.98 | |||||||||||
1979 | 45.16 | 49.88 | 52.68 | 60.79 | a | 69.02 | a | ----- | z | 87.42 | m | 81.27 | a | 79.88 | 66.98 | 50.20 | 48.76 | 60.46 | b | |||||||
1980 | 49.11 | 52.57 | 53.13 | a | 60.53 | a | 66.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.33 | g | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 47.67 | 50.89 | 55.93 | 62.03 | 69.76 | 79.49 | 84.41 | 82.24 | 77.10 | 65.97 | 54.59 | 47.26 | 64.81 | |||||||||||||
S.D. | 2.73 | 2.96 | 2.96 | 2.45 | 2.43 | 2.45 | 2.77 | 2.31 | 2.45 | 2.28 | 2.40 | 2.42 | 1.05 | |||||||||||||
SKEW | -0.05 | 0.19 | 0.19 | 0.08 | -0.20 | 0.29 | -0.21 | -0.04 | -0.23 | 0.04 | -0.30 | 0.10 | -0.32 | |||||||||||||
MAX | 52.50 | 59.13 | 62.53 | 68.12 | 73.69 | 85.48 | 90.07 | 86.84 | 83.85 | 70.21 | 59.52 | 52.98 | 66.82 | |||||||||||||
MIN | 41.89 | 45.03 | 49.87 | 56.29 | 65.35 | 73.85 | 77.57 | 76.87 | 69.84 | 61.62 | 49.30 | 43.08 | 61.54 | |||||||||||||
YRS | 59 | 56 | 57 | 58 | 59 | 55 | 56 | 56 | 56 | 54 | 56 | 57 | 43 |