YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1895 | ----- | z | ----- | z | 56.45 | 61.67 | 65.43 | a | 72.10 | 77.55 | 77.74 | 67.73 | 72.94 | 55.57 | ----- | z | 67.46 | c | ||||||||
1896 | 50.42 | 54.18 | a | 54.39 | 58.37 | 64.42 | 74.13 | 79.90 | ----- | z | ----- | z | ----- | z | 51.36 | b | 53.57 | a | 60.08 | c | ||||||
1897 | 48.37 | a | 51.32 | 47.93 | a | 66.13 | 71.94 | 68.93 | 70.71 | 78.13 | 70.40 | 63.29 | 50.60 | 48.26 | 61.33 | |||||||||||
1898 | 46.39 | 51.43 | 52.03 | 60.00 | 67.13 | 70.43 | 74.00 | 74.23 | 74.53 | 61.84 | 52.83 | 48.86 | b | 61.14 | ||||||||||||
1899 | 46.24 | b | 45.89 | a | 51.55 | 56.50 | 55.94 | 63.32 | b | 73.42 | 68.03 | 74.03 | 60.35 | 58.37 | 49.65 | 58.61 | ||||||||||
1900 | 51.61 | 49.04 | e | 60.19 | 64.97 | 64.63 | a | 70.10 | 74.32 | 71.42 | 69.70 | 60.61 | 55.30 | 52.52 | 62.04 | |||||||||||
1901 | 47.39 | 48.78 | a | 52.52 | 57.03 | a | 62.48 | 62.50 | 69.23 | a | 73.48 | 67.60 | 66.58 | 56.20 | 49.48 | 59.44 | ||||||||||
1902 | 46.68 | 51.79 | 51.71 | 57.50 | v | 64.52 | 68.27 | 71.68 | 74.42 | 70.90 | 64.13 | a | 52.43 | 47.33 | a | 60.35 | a | |||||||||
1903 | 49.26 | 49.50 | 52.29 | 54.14 | a | 62.00 | e | 66.57 | b | 68.97 | b | 70.85 | e | 66.62 | a | 66.45 | 52.72 | a | 49.55 | 59.08 | ||||||
1904 | 48.43 | a | 44.67 | b | 47.59 | b | 64.79 | a | 62.03 | a | 67.10 | 77.06 | ----- | z | 77.72 | a | 73.57 | a | 66.07 | 52.96 | c | 62.00 | a | |||
1905 | 51.97 | a | 57.59 | a | 65.17 | h | 69.27 | 67.07 | a | 65.17 | a | 72.84 | 71.90 | 72.69 | q | 57.12 | o | ----- | z | 47.93 | c | 62.97 | d | |||
1906 | 47.90 | 53.61 | 53.30 | a | 62.04 | e | 63.93 | a | 65.04 | f | 84.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.82 | f | |||
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.38 | f | 73.71 | 57.77 | 50.07 | a | 60.51 | i | ||
1908 | 49.00 | j | 50.45 | 52.29 | g | 57.97 | 57.48 | b | 61.06 | m | 74.06 | 68.55 | b | 69.00 | g | 60.88 | e | 56.33 | 49.31 | b | 59.38 | d | ||||
1909 | 41.65 | 46.85 | a | 53.42 | 53.38 | a | 66.00 | 70.23 | 69.77 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.33 | e | ||||
1910 | 43.84 | l | 45.11 | 54.74 | 56.30 | 63.42 | 63.62 | a | 69.71 | 67.88 | f | 65.57 | 59.00 | 51.89 | b | 48.58 | g | 58.82 | c | |||||||
1911 | 43.86 | i | 46.93 | 56.06 | 55.07 | 57.71 | 62.53 | 71.26 | 70.06 | 64.63 | 61.97 | 50.97 | 46.61 | 58.53 | a | |||||||||||
1912 | 48.00 | 51.28 | 55.65 | 54.87 | ----- | z | 67.76 | a | 70.29 | 70.68 | 69.60 | 57.74 | 51.87 | 46.94 | 58.61 | a | ||||||||||
1913 | 43.16 | 49.71 | 49.52 | 54.30 | 57.23 | 62.13 | ----- | z | 69.16 | 66.07 | 57.68 | 53.23 | 49.06 | 55.57 | a | |||||||||||
1914 | 48.39 | 51.18 | 55.97 | 59.83 | 67.42 | 64.50 | 71.55 | 70.48 | 64.23 | 63.68 | 53.67 | 46.71 | 59.80 | |||||||||||||
1915 | 47.94 | 51.32 | 60.68 | 61.63 | 63.35 | 66.53 | 69.45 | 73.71 | 69.57 | 61.41 | i | 49.97 | 46.97 | 60.10 | a | |||||||||||
1916 | 36.74 | 53.21 | 50.58 | 56.77 | 58.23 | 65.93 | 66.52 | 69.74 | 68.35 | d | 62.23 | 49.60 | 41.58 | 56.62 | ||||||||||||
1917 | 42.77 | 44.64 | 45.42 | 50.96 | c | 54.35 | 60.87 | 67.52 | 70.64 | q | 63.27 | 59.79 | b | 55.77 | 50.35 | 54.16 | a | |||||||||
1918 | 48.90 | 43.86 | 46.81 | 55.30 | 53.90 | 66.43 | 70.61 | 73.10 | 76.20 | 64.87 | ----- | z | ----- | z | 60.00 | b | ||||||||||
1919 | ----- | z | ----- | z | ----- | z | 58.70 | 62.48 | 65.73 | 72.87 | 72.81 | 71.80 | 60.97 | 51.57 | 45.32 | 62.47 | c | |||||||||
1920 | 48.13 | 54.38 | 53.97 | 55.80 | 59.74 | 66.63 | 71.81 | 74.48 | 65.57 | 58.97 | 51.13 | 45.58 | 58.85 | |||||||||||||
1921 | 43.87 | 45.93 | 49.87 | 57.67 | 63.32 | 67.57 | 69.74 | 72.19 | 69.20 | 63.74 | 53.03 | 45.58 | 58.48 | |||||||||||||
1922 | 43.32 | 45.79 | 48.97 | 54.30 | 63.74 | 68.63 | 71.65 | 71.87 | 71.27 | 62.03 | 53.50 | 43.81 | 58.24 | |||||||||||||
1923 | 46.32 | 47.29 | 53.03 | 59.90 | a | 61.42 | 68.57 | 72.23 | 77.29 | 72.20 | 65.19 | 58.33 | 48.32 | 60.84 | ||||||||||||
1924 | 46.45 | 52.17 | 52.68 | 57.40 | 65.00 | 67.43 | 69.58 | 68.00 | 69.23 | 59.84 | 52.33 | 43.23 | 58.61 | |||||||||||||
1925 | 47.52 | 50.48 | a | 52.06 | 57.03 | 65.42 | 66.07 | 70.65 | 70.58 | 69.77 | 62.55 | 53.63 | 51.65 | 59.78 | ||||||||||||
1926 | 49.94 | 53.21 | 60.12 | e | 67.43 | 65.52 | ----- | z | 76.30 | a | 73.37 | a | 69.70 | 64.27 | a | 56.73 | 46.84 | f | 63.66 | b | ||||||
1927 | 46.60 | a | 51.89 | 52.16 | 57.03 | a | 58.23 | 68.33 | 70.00 | a | 71.58 | 68.30 | 62.42 | 52.47 | 45.10 | a | 58.68 | |||||||||
1928 | 49.41 | b | 51.97 | 55.52 | 55.72 | e | 68.32 | 65.81 | c | 71.97 | a | 71.16 | 66.00 | 59.53 | a | 52.97 | 48.19 | 59.71 | ||||||||
1929 | 42.61 | 45.71 | 52.32 | 53.30 | 61.58 | 65.90 | 72.87 | 73.26 | 74.77 | 64.32 | 54.77 | 49.00 | 59.20 | |||||||||||||
1930 | 38.94 | 51.36 | 57.23 | 61.14 | a | 58.77 | 65.67 | 68.29 | 74.00 | 67.83 | 61.65 | 55.27 | 51.35 | 59.29 | ||||||||||||
1931 | 53.29 | 53.32 | 54.77 | a | 61.97 | 68.77 | 66.83 | 75.84 | 72.48 | 66.77 | 62.16 | 52.13 | 47.42 | 61.31 | ||||||||||||
1932 | 44.71 | 48.28 | 52.52 | 57.70 | 61.74 | 67.24 | a | 65.67 | a | 68.65 | 71.50 | 62.13 | 55.97 | 45.97 | 58.51 | |||||||||||
1933 | 44.58 | 45.36 | 52.07 | a | 57.80 | 56.58 | 65.67 | 70.42 | 74.23 | a | 63.59 | c | 63.23 | 55.47 | 51.48 | 58.37 | ||||||||||
1934 | 51.68 | 59.86 | 60.42 | 64.60 | 66.61 | 67.77 | 67.97 | 71.13 | 68.07 | 63.84 | 54.50 | 50.10 | 62.21 | |||||||||||||
1935 | 47.94 | 55.30 | a | 48.77 | 59.66 | a | 62.71 | 66.97 | 69.52 | 73.16 | 70.70 | 62.06 | 52.20 | 51.48 | 60.04 | |||||||||||
1936 | 51.10 | 45.59 | 51.16 | 59.83 | 66.71 | 67.57 | 72.06 | 75.16 | 71.27 | 68.19 | 59.87 | 50.35 | 61.57 | |||||||||||||
1937 | 41.29 | 48.04 | 57.32 | 53.80 | 63.94 | 69.33 | 71.65 | 72.77 | 71.73 | 68.35 | 55.69 | a | 52.81 | d | 60.56 | |||||||||||
1938 | 48.90 | 50.64 | 53.06 | 58.67 | 61.40 | a | 63.83 | a | 71.42 | 63.06 | 66.70 | 62.21 | b | 52.83 | 48.23 | 58.41 | ||||||||||
1939 | 47.39 | 46.46 | 53.52 | 61.80 | 65.42 | 64.23 | 72.94 | 76.26 | 71.17 | 62.39 | 58.70 | 53.16 | 61.12 | |||||||||||||
1940 | 50.52 | 51.52 | 57.65 | 61.52 | a | 68.13 | 74.79 | a | 70.65 | 75.81 | 71.43 | 64.79 | b | 53.20 | 51.29 | 62.61 | ||||||||||
1941 | 52.55 | 56.43 | 63.61 | 62.27 | 61.94 | 62.87 | ----- | z | ----- | z | 66.23 | 62.87 | 56.03 | 49.35 | 59.42 | b | ||||||||||
1942 | 49.06 | 50.83 | d | 54.65 | 59.20 | 62.39 | 67.23 | 73.03 | 73.39 | 70.13 | 64.84 | 51.83 | 48.81 | 60.45 | ||||||||||||
1943 | 44.33 | a | 55.71 | 53.74 | 60.73 | 61.10 | 65.60 | 69.23 | 70.06 | 72.13 | 61.39 | 56.70 | 49.94 | 60.06 | ||||||||||||
1944 | 49.39 | 51.28 | 54.19 | 58.73 | 64.19 | 65.97 | 70.13 | 70.45 | 71.31 | a | 66.03 | 52.63 | 48.55 | 60.24 | ||||||||||||
1945 | 50.32 | 50.11 | 51.48 | 54.70 | 63.35 | 67.80 | 73.13 | 71.10 | 68.79 | a | 62.00 | 50.67 | 46.97 | 59.20 | ||||||||||||
1946 | 47.97 | a | 48.79 | 52.16 | 56.37 | 64.65 | 64.40 | 71.32 | 71.13 | 67.43 | 57.55 | 51.13 | 47.16 | 58.34 | ||||||||||||
1947 | 43.42 | 54.37 | a | 58.32 | 61.97 | 67.23 | 67.00 | 70.94 | 70.65 | 72.00 | b | 59.68 | 52.40 | 49.55 | 60.63 | |||||||||||
1948 | 48.29 | 47.69 | ----- | z | ----- | z | ----- | z | 70.93 | 70.29 | 67.10 | 69.00 | 60.90 | 50.00 | 43.32 | 58.61 | c | |||||||||
1949 | 39.77 | 47.07 | 54.03 | 58.77 | 65.10 | 67.03 | 69.77 | 69.65 | 69.97 | 59.55 | 57.87 | 45.90 | 58.71 | |||||||||||||
1950 | 36.45 | 48.00 | 48.48 | 55.37 | 60.00 | 67.27 | 70.13 | 71.94 | 69.00 | d | 56.52 | 50.73 | 51.71 | 57.13 | ||||||||||||
1951 | 45.68 | 50.96 | 49.61 | 63.60 | 63.55 | 69.17 | 70.06 | 70.48 | 67.77 | 61.10 | 52.90 | a | 44.35 | 59.10 | ||||||||||||
1952 | 43.68 | 48.76 | 50.32 | 59.90 | 64.06 | 63.17 | 70.94 | 70.45 | 72.80 | 67.61 | 53.54 | b | 48.55 | 59.48 | ||||||||||||
1953 | 50.12 | f | 50.86 | 53.39 | 57.07 | 62.55 | b | 65.20 | 71.36 | f | 70.39 | 68.08 | f | 65.23 | 54.97 | 49.64 | c | 58.81 | c | |||||||
1954 | 43.97 | b | 52.04 | 53.77 | 55.93 | 64.65 | 62.53 | 66.61 | 66.33 | a | 67.63 | 63.77 | 56.53 | 48.42 | 58.52 | |||||||||||
1955 | 46.39 | 48.71 | 48.77 | 53.57 | 58.90 | a | 63.63 | 64.90 | 70.39 | 67.87 | 59.58 | 48.00 | 46.73 | a | 56.45 | |||||||||||
1956 | 46.29 | 43.97 | 50.65 | 63.03 | 67.74 | 63.83 | 73.47 | a | 71.84 | 68.87 | 58.97 | 54.43 | 47.61 | 59.22 | ||||||||||||
1957 | 41.90 | 49.64 | 54.13 | 59.93 | 65.29 | 67.80 | 70.68 | 71.03 | 75.47 | 62.26 | 55.37 | 50.16 | 60.31 | |||||||||||||
1958 | 51.06 | 55.29 | 54.90 | 59.77 | 70.06 | 70.47 | 75.97 | 75.45 | 70.37 | 64.84 | 52.30 | 52.94 | 62.78 | |||||||||||||
1959 | 47.39 | 48.32 | 53.06 | 59.13 | 65.32 | 66.77 | 73.29 | 70.39 | 66.17 | 62.48 | 55.43 | 48.97 | 59.73 | |||||||||||||
1960 | 45.00 | 50.50 | a | 53.74 | 59.70 | 60.58 | 67.20 | 73.29 | 69.13 | 70.30 | 62.63 | a | 53.86 | a | 49.71 | 59.64 | ||||||||||
1961 | 53.77 | 51.18 | 53.35 | 55.43 | 60.91 | i | 72.73 | 73.13 | 74.52 | 68.80 | 60.48 | 51.10 | 47.19 | 60.15 | a | |||||||||||
1962 | 47.87 | 52.18 | 52.29 | 58.57 | 58.87 | 66.17 | 68.81 | 70.35 | 70.52 | a | 62.52 | 54.93 | 49.97 | a | 59.42 | |||||||||||
1963 | 44.73 | a | 57.54 | 54.16 | 57.87 | 66.26 | 66.27 | 69.58 | 72.52 | 73.60 | 63.03 | 52.97 | a | 49.61 | 60.68 | |||||||||||
1964 | 47.81 | 51.55 | 52.35 | 55.80 | 61.77 | a | 65.43 | 68.81 | 71.13 | 68.43 | 64.87 | 50.60 | 43.81 | 58.53 | ||||||||||||
1965 | 47.03 | 49.41 | a | 59.58 | 58.83 | 59.94 | 60.39 | b | ----- | z | ----- | z | ----- | z | 64.97 | ----- | z | 43.09 | h | 57.16 | e | |||||
1966 | 47.50 | a | 49.43 | 53.23 | a | 59.33 | 65.94 | 69.00 | 71.65 | 74.90 | 72.60 | 61.83 | a | 53.53 | 49.55 | 60.71 | ||||||||||
1967 | 48.42 | 51.00 | 50.37 | a | 55.63 | 64.32 | 72.31 | a | 74.67 | a | 80.61 | 75.30 | 61.87 | 54.93 | 46.19 | 61.30 | ||||||||||
1968 | 47.43 | a | 56.93 | 55.33 | a | 57.57 | 66.32 | 68.90 | 77.16 | 72.90 | a | 70.77 | 61.13 | 53.57 | 44.39 | 61.03 | ||||||||||
1969 | 39.83 | a | 48.21 | 56.42 | 56.90 | 68.65 | 73.07 | 72.16 | 72.71 | 69.60 | 61.16 | 54.14 | a | 49.52 | 60.20 | |||||||||||
1970 | 47.81 | 55.89 | a | 55.97 | 54.43 | 65.45 | 74.67 | 73.84 | 73.94 | 67.80 | 61.10 | 53.33 | 45.68 | 60.82 | ||||||||||||
1971 | 46.86 | b | 48.61 | 49.19 | 57.47 | 65.00 | 63.67 | 73.42 | 77.50 | a | 69.17 | 60.55 | 51.50 | 44.10 | 58.92 | |||||||||||
1972 | 43.35 | 48.59 | 53.71 | 53.97 | 66.71 | 69.20 | 76.48 | 77.77 | 67.90 | 61.61 | 52.83 | 44.07 | a | 59.68 | ||||||||||||
1973 | 45.52 | 52.36 | 52.55 | 59.50 | 66.35 | 67.86 | a | 72.90 | 68.68 | 72.86 | a | 60.23 | 48.73 | 48.57 | a | 59.68 | ||||||||||
1974 | 44.52 | b | 47.96 | 52.00 | 57.64 | b | 61.00 | 69.77 | 72.77 | 73.40 | a | 77.39 | b | 65.68 | 53.37 | 49.29 | 60.40 | |||||||||
1975 | 45.93 | a | 48.61 | 51.10 | 54.83 | 64.55 | 67.07 | 72.68 | 68.76 | b | 74.43 | 58.19 | 51.53 | 48.76 | f | 59.79 | a | |||||||||
1976 | 48.68 | 48.62 | 50.42 | 58.37 | 64.97 | 67.73 | 72.74 | 70.48 | 71.77 | 64.19 | 55.93 | 49.94 | 60.32 | |||||||||||||
1977 | 46.97 | 55.32 | 51.13 | 60.83 | a | 60.10 | 69.13 | 72.55 | 75.94 | 67.67 | 61.67 | a | 49.63 | 48.45 | 59.95 | |||||||||||
1978 | 49.13 | a | 52.44 | a | 57.39 | 58.70 | 65.57 | c | 73.07 | 74.58 | 73.17 | a | 67.82 | b | 66.74 | 49.40 | 44.27 | a | 61.02 | |||||||
1979 | 42.87 | 48.00 | 58.53 | a | 59.70 | 68.32 | 69.77 | 76.71 | 76.39 | 73.43 | 64.81 | 53.48 | a | 49.97 | a | 61.83 | ||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 46.61 | 50.37 | 53.38 | 58.48 | 63.44 | 67.18 | 71.91 | 72.18 | 69.85 | 62.78 | 53.65 | 48.31 | 59.82 | |||||||||||||
S.D. | 3.52 | 3.44 | 3.41 | 3.42 | 3.60 | 3.07 | 3.10 | 2.98 | 3.10 | 3.27 | 2.83 | 2.66 | 1.34 | |||||||||||||
SKEW | -0.62 | 0.34 | 0.45 | 0.64 | -0.47 | 0.33 | 0.85 | 0.13 | 0.32 | 1.16 | 1.12 | -0.26 | -0.09 | |||||||||||||
MAX | 53.77 | 59.86 | 63.61 | 69.27 | 71.94 | 74.79 | 84.16 | 80.61 | 77.72 | 73.71 | 66.07 | 53.57 | 62.78 | |||||||||||||
MIN | 36.45 | 43.86 | 45.42 | 50.96 | 53.90 | 60.39 | 64.90 | 63.06 | 63.27 | 56.52 | 48.00 | 41.58 | 56.45 | |||||||||||||
YRS | 78 | 82 | 80 | 82 | 81 | 81 | 80 | 76 | 77 | 80 | 80 | 77 | 61 |