YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.34 | b | 39.34 | k |
1902 | 38.93 | b | 40.87 | e | 41.88 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.70 | c | 56.20 | a | 44.96 | c | 39.55 | b | 46.87 | f |
1903 | 42.40 | u | 34.58 | d | 42.75 | c | 52.30 | c | 60.21 | c | 63.53 | 71.58 | 69.23 | a | 60.89 | c | ----- | z | 50.57 | 40.24 | b | 54.59 | b | |||
1904 | 36.04 | e | 44.92 | c | 49.78 | d | ----- | z | ----- | z | 68.64 | b | 68.83 | a | 66.74 | 59.90 | 50.45 | b | 45.86 | a | 38.52 | 52.97 | b | |||
1905 | 39.13 | 35.96 | 41.97 | a | 46.86 | a | 59.32 | 68.50 | 74.17 | a | ----- | z | ----- | z | 54.13 | a | 44.27 | 34.16 | 49.85 | b | ||||||
1906 | 39.55 | 39.71 | 46.48 | 53.43 | 63.35 | 75.87 | 69.57 | a | 66.23 | 63.77 | 56.06 | 44.87 | 43.19 | 55.17 | ||||||||||||
1907 | 40.68 | 45.39 | 53.06 | 56.27 | 58.73 | a | 70.87 | 72.16 | 69.66 | b | 65.83 | 53.74 | 41.40 | 41.19 | 55.75 | |||||||||||
1908 | 41.03 | 40.83 | 51.13 | 54.13 | 60.81 | 74.53 | 69.77 | a | 66.90 | ----- | z | ----- | z | ----- | z | ----- | z | 57.39 | d | |||||||
1909 | ----- | z | ----- | z | 43.77 | 56.63 | 62.84 | 74.23 | ----- | z | ----- | z | 65.22 | u | 59.97 | 50.17 | 32.19 | 54.26 | e | |||||||
1910 | 43.87 | 46.67 | a | 64.16 | 60.13 | 72.45 | 75.57 | 74.68 | 69.19 | 67.40 | 58.14 | i | 54.53 | 46.87 | a | 61.41 | a | |||||||||
1911 | 46.23 | 41.50 | 51.74 | 55.60 | 65.81 | 72.93 | a | 72.06 | 75.97 | 70.31 | a | 59.26 | 46.10 | 35.61 | 57.76 | |||||||||||
1912 | 40.68 | 41.69 | 46.37 | a | 50.43 | 65.77 | 69.24 | a | 69.00 | 65.68 | 62.17 | 59.30 | a | 50.77 | 40.40 | a | 55.12 | |||||||||
1913 | 41.85 | d | 35.68 | 40.81 | 53.20 | 62.45 | 65.43 | 69.45 | 66.45 | 58.31 | a | 58.52 | 48.87 | 28.97 | b | 52.50 | ||||||||||
1914 | 44.40 | a | 42.39 | 48.47 | a | 54.53 | 66.00 | 72.87 | 66.97 | 66.00 | 65.40 | 55.74 | 52.27 | 33.55 | 55.72 | |||||||||||
1915 | 32.87 | 40.68 | 39.10 | 51.30 | 59.46 | c | 71.63 | 69.83 | a | 66.94 | 61.90 | 61.35 | 48.67 | 37.23 | 53.41 | |||||||||||
1916 | 38.06 | 46.75 | a | 53.63 | a | 51.27 | 62.40 | a | 69.57 | 72.32 | 67.42 | 65.77 | 56.35 | 48.13 | 36.39 | 55.67 | ||||||||||
1917 | 38.30 | a | 42.00 | 40.42 | 51.97 | 54.16 | 70.50 | 70.35 | 66.55 | 62.53 | 58.52 | 51.70 | 46.39 | 54.45 | ||||||||||||
1918 | 33.71 | 44.14 | 46.42 | 50.30 | 58.84 | 70.90 | 78.32 | 75.74 | 75.57 | 63.37 | a | 40.03 | 37.68 | 56.25 | ||||||||||||
1919 | 37.96 | d | 37.04 | a | 44.34 | b | 53.92 | f | 60.97 | 65.93 | a | 67.23 | 69.65 | 64.97 | 52.41 | b | 45.90 | a | 45.60 | a | 53.82 | a | ||||
1920 | 42.93 | a | 43.14 | a | 44.27 | a | 48.00 | 62.37 | a | 65.83 | a | 68.97 | a | 67.58 | 63.87 | 57.50 | a | 48.25 | b | 38.70 | a | 54.28 | ||||
1921 | 44.72 | b | 44.26 | a | 54.14 | c | 54.03 | a | 62.84 | 68.86 | a | 67.87 | a | 68.65 | 69.27 | 60.31 | b | 54.85 | c | 49.61 | 58.28 | |||||
1922 | 42.23 | 45.85 | b | 49.93 | a | 54.96 | c | 64.18 | c | 74.17 | 73.13 | 73.65 | 67.46 | b | 58.67 | d | 44.71 | b | 43.53 | a | 57.71 | |||||
1923 | 44.66 | b | 41.74 | e | 42.65 | e | 50.48 | e | ----- | z | 68.24 | a | 69.83 | b | 66.97 | 60.00 | c | 57.19 | d | 44.22 | c | 37.00 | e | 53.00 | a | |
1924 | 39.04 | e | 47.00 | d | 44.04 | d | 49.19 | d | 61.57 | c | 76.60 | 70.26 | 72.74 | 70.82 | b | 61.12 | f | 54.36 | e | 43.92 | g | 58.56 | b | |||
1925 | 38.39 | c | 44.33 | d | 47.88 | e | 54.79 | b | 64.96 | d | 65.00 | a | 70.74 | 66.13 | 67.30 | 61.08 | e | 44.73 | d | 42.81 | e | 55.68 | ||||
1926 | 36.42 | e | 47.42 | d | 44.89 | d | 46.15 | c | 60.56 | d | 70.00 | a | 69.74 | 70.13 | 68.73 | 59.00 | e | 46.33 | c | 37.73 | e | 54.76 | ||||
1927 | 45.46 | e | 43.00 | d | 47.30 | d | 54.32 | e | 65.85 | e | 67.83 | 67.68 | 65.19 | d | 59.81 | d | 55.52 | f | 49.65 | d | 33.26 | d | 54.49 | a | ||
1928 | 42.77 | e | 38.78 | f | 48.15 | d | 55.79 | f | 64.67 | d | 77.07 | 71.65 | 65.03 | 63.12 | e | 58.00 | d | 43.72 | e | 40.38 | e | 57.46 | b | |||
1929 | 37.07 | d | 34.88 | d | 41.42 | e | 53.56 | e | 60.00 | b | 72.07 | a | 67.93 | a | 65.42 | 63.86 | b | 51.59 | d | 41.12 | d | 42.15 | e | 52.59 | ||
1930 | 33.77 | e | 48.75 | d | 44.19 | e | 57.92 | e | 60.96 | d | 72.30 | 69.87 | 69.97 | 67.30 | c | 58.33 | d | 43.80 | e | 39.04 | d | 55.52 | ||||
1931 | 40.63 | d | 38.71 | d | 46.27 | e | 52.76 | e | 62.60 | f | 72.54 | d | 72.23 | e | 68.35 | e | 67.68 | e | 61.19 | d | 47.84 | e | 39.59 | d | 55.25 | a |
1932 | 37.42 | e | 45.96 | e | 44.56 | d | 57.04 | d | 62.81 | e | 71.38 | d | 71.04 | f | 69.89 | d | 64.44 | e | 57.96 | e | 52.68 | e | 39.69 | e | 54.89 | a |
1933 | 39.46 | e | 38.57 | e | 51.92 | f | 52.12 | e | 61.04 | d | 69.50 | d | 72.64 | f | 70.12 | e | 70.56 | e | 59.65 | e | 53.27 | d | 50.36 | f | 57.14 | c |
1934 | 43.50 | e | 47.67 | d | 53.85 | d | 58.72 | e | 68.08 | e | 74.24 | e | 74.84 | f | 73.07 | d | 69.46 | f | 63.89 | d | 50.52 | e | 46.08 | g | 59.28 | c |
1935 | 46.64 | f | 41.48 | e | 49.42 | e | 54.58 | d | 57.79 | g | 71.46 | f | 71.50 | e | 68.85 | d | 64.88 | f | 60.52 | d | 49.50 | d | 41.60 | f | 56.55 | e |
1936 | 40.31 | e | 40.83 | f | 48.81 | e | 56.77 | d | 63.68 | f | 73.58 | d | 71.28 | f | 70.19 | e | 64.68 | e | 56.04 | d | 50.24 | e | 43.19 | e | 55.98 | c |
1937 | 37.73 | e | 42.65 | e | 44.69 | e | 56.23 | d | 65.58 | e | 71.88 | d | 74.15 | e | 72.85 | e | 68.09 | g | 61.00 | e | 52.65 | d | 44.96 | e | 56.76 | a |
1938 | 42.48 | f | 45.05 | f | 49.44 | d | 58.35 | d | 64.00 | e | 72.27 | d | 69.56 | f | 72.33 | d | 64.32 | e | 61.62 | e | 50.75 | f | 45.62 | e | 60.99 | d |
1939 | 39.44 | f | 37.52 | g | 49.70 | d | 57.28 | e | 66.35 | e | 74.85 | d | 71.48 | f | 69.81 | e | 67.44 | e | 58.50 | e | 49.64 | e | 50.48 | f | 61.70 | d |
1940 | 42.12 | e | 42.23 | g | 50.50 | g | 57.48 | e | 64.81 | e | 71.65 | g | 73.19 | e | 69.93 | d | 68.17 | f | 59.89 | d | 48.09 | g | 47.44 | f | 61.24 | f |
1941 | 39.56 | f | 44.09 | e | 44.85 | e | 51.04 | d | 63.12 | f | 68.28 | e | 69.54 | e | 67.88 | e | 66.24 | e | 56.70 | d | 50.52 | g | 45.81 | e | 57.16 | c |
1942 | 46.21 | g | 39.86 | f | 46.16 | f | 55.00 | e | 64.24 | f | 73.85 | d | 72.27 | e | 70.08 | e | 65.84 | e | 55.74 | d | 55.54 | f | 45.77 | e | 62.65 | e |
1943 | 42.44 | f | 47.43 | e | 48.52 | d | 62.16 | e | 67.24 | f | 70.65 | d | 70.04 | e | 74.23 | e | 66.00 | e | 59.08 | e | 53.08 | f | 42.04 | g | 62.26 | d |
1944 | 43.50 | a | 42.52 | 45.70 | a | 54.63 | 62.83 | a | 72.20 | 71.32 | 71.86 | b | 66.45 | a | 60.33 | a | 47.43 | 43.97 | 56.90 | |||||||
1945 | 43.07 | a | 46.07 | a | 49.50 | a | 55.93 | 67.90 | 72.30 | 73.58 | 72.68 | 69.37 | 60.16 | 54.30 | 40.48 | 58.78 | ||||||||||
1946 | 37.94 | 46.32 | 50.16 | 61.43 | 62.87 | 75.47 | 74.15 | e | 71.67 | d | 68.67 | f | ----- | z | 53.47 | k | 48.48 | f | 60.00 | d | ||||||
1947 | 37.81 | e | 46.35 | e | 48.50 | e | 56.38 | d | 66.12 | e | 72.00 | f | 75.88 | e | 69.64 | f | ----- | z | ----- | z | ----- | z | ----- | z | 55.17 | f |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | 67.38 | b | 74.10 | 75.47 | a | 75.16 | 71.63 | 58.68 | 44.93 | 42.16 | 63.69 | d | ||||||
1949 | 32.61 | 39.32 | 48.87 | 54.77 | 65.52 | 73.50 | 71.06 | 70.77 | 67.07 | 56.87 | 55.67 | 41.42 | 56.45 | |||||||||||||
1950 | 42.52 | 46.64 | 50.19 | 59.13 | 64.87 | 74.13 | 69.39 | 72.74 | 66.30 | 65.94 | 54.50 | 46.90 | 59.44 | |||||||||||||
1951 | 40.32 | 43.43 | 45.06 | 52.67 | 66.00 | 75.13 | 76.74 | 72.97 | 72.73 | 60.00 | 46.72 | a | 39.87 | 57.64 | ||||||||||||
1952 | 43.45 | 38.93 | b | 41.45 | 54.07 | a | 63.61 | 73.33 | 73.26 | 74.19 | 69.90 | ----- | z | ----- | z | ----- | z | 59.13 | c | |||||||
1953 | ----- | z | 39.50 | t | 53.23 | a | 58.40 | 63.94 | 77.73 | 75.23 | 73.16 | 74.23 | 64.71 | 56.13 | 41.97 | 63.87 | b | |||||||||
1954 | 47.94 | 52.71 | 50.03 | 65.23 | 68.23 | a | 76.17 | 76.03 | 72.39 | 70.07 | 65.43 | a | 57.33 | 49.65 | 62.60 | |||||||||||
1955 | 40.60 | a | 42.71 | 49.45 | 58.53 | 65.39 | 75.07 | 71.77 | 71.43 | a | 72.80 | 63.32 | 55.40 | 50.06 | 59.71 | |||||||||||
1956 | 48.58 | 39.93 | 55.26 | 58.53 | 72.77 | 77.20 | 73.23 | 72.35 | 74.40 | 63.06 | 49.20 | 43.23 | 60.65 | |||||||||||||
1957 | 42.16 | 50.86 | 48.35 | 56.97 | a | 62.94 | 76.23 | 76.26 | 71.48 | 68.90 | 55.38 | b | 44.53 | 46.37 | a | 58.37 | ||||||||||
1958 | 38.35 | 42.32 | 42.29 | 56.07 | 68.94 | 78.13 | 77.45 | 73.68 | 66.40 | 55.74 | 50.90 | 49.87 | 58.35 | |||||||||||||
1959 | 44.13 | 45.89 | a | 49.23 | 57.93 | 66.90 | 76.07 | 71.23 | 68.48 | 69.07 | 60.87 | 49.63 | 41.35 | 58.40 | ||||||||||||
1960 | 39.39 | 37.52 | 50.60 | f | 59.50 | 65.65 | 76.72 | a | 71.42 | 73.58 | 69.20 | 58.23 | 53.60 | 42.16 | 58.81 | a | ||||||||||
1961 | 42.94 | 44.57 | 49.97 | 59.30 | 69.39 | 74.37 | 75.21 | b | 71.57 | a | 65.63 | 60.68 | 45.39 | b | 41.68 | 58.39 | ||||||||||
1962 | 40.03 | 48.96 | a | 43.00 | 58.47 | 66.71 | 72.97 | a | 69.71 | 75.42 | 65.63 | 59.16 | 53.00 | 45.74 | 58.23 | |||||||||||
1963 | 40.06 | 45.61 | 50.84 | 59.13 | 69.61 | 73.60 | 74.03 | 68.65 | 67.40 | 61.35 | 53.21 | a | 46.06 | 59.13 | ||||||||||||
1964 | 43.58 | 38.97 | 44.52 | 53.30 | 60.68 | 70.07 | 71.23 | a | 71.03 | b | 58.83 | 60.33 | v | 48.39 | g | 42.33 | a | 55.45 | b | |||||||
1965 | 44.07 | a | 39.32 | 43.45 | 57.07 | 63.71 | 70.50 | 72.90 | 70.71 | 66.50 | 60.58 | 52.23 | 42.90 | a | 57.00 | |||||||||||
1966 | 40.97 | 36.14 | 49.84 | 56.17 | 65.19 | 68.10 | 71.48 | 70.10 | 65.41 | c | 59.81 | 53.96 | g | 42.14 | c | 56.85 | a | |||||||||
1967 | 42.19 | 44.68 | 54.06 | 58.87 | 63.90 | 71.83 | 72.82 | c | 68.72 | f | 63.41 | a | 60.15 | d | 48.67 | f | 37.36 | c | 56.93 | b | ||||||
1968 | 41.26 | d | 43.34 | 43.84 | 51.33 | 64.84 | 73.55 | a | 69.35 | 67.68 | 66.36 | b | 62.35 | 46.30 | 41.75 | c | 56.00 | |||||||||
1969 | 44.47 | a | 42.54 | b | 42.90 | b | 61.12 | d | 64.97 | 72.20 | 77.55 | 77.77 | 69.70 | 54.82 | n | 49.20 | e | 40.25 | k | 60.24 | b | |||||
1970 | 45.33 | p | 45.70 | e | 44.23 | a | 55.85 | d | 66.19 | j | 69.23 | 72.71 | ----- | z | ----- | z | 51.73 | a | 47.87 | 43.42 | 53.84 | d | ||||
1971 | 41.71 | 44.04 | a | 54.35 | 56.97 | 65.19 | 73.75 | b | 74.45 | ----- | z | 67.33 | 56.83 | a | 49.23 | 42.84 | 56.97 | a | ||||||||
1972 | 41.00 | 45.79 | 57.03 | 62.43 | 66.42 | 72.80 | 74.06 | 68.71 | 64.90 | 59.07 | a | 43.80 | 43.19 | 58.27 | ||||||||||||
1973 | 38.35 | 39.25 | 44.90 | ----- | z | ----- | z | 72.20 | 72.32 | 71.00 | 69.57 | 63.10 | a | 53.00 | ----- | z | 58.19 | c | ||||||||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.37 | 45.58 | 44.97 | j | ||
1980 | 43.13 | 44.41 | 46.81 | 55.93 | 62.33 | a | 79.69 | a | 76.10 | 69.84 | 64.77 | 54.68 | 48.73 | 51.16 | 58.13 | |||||||||||
1981 | 43.00 | 46.43 | 45.74 | 59.43 | 63.97 | 73.72 | a | 72.00 | 67.35 | 64.57 | 57.03 | 52.93 | b | 46.29 | 57.71 | |||||||||||
1982 | 42.64 | f | 44.81 | g | 50.81 | e | 56.56 | c | 63.07 | d | 74.04 | b | 73.03 | a | 70.07 | b | 65.92 | d | 58.52 | d | 44.46 | b | 40.04 | f | 61.83 | c |
1983 | 42.12 | f | 41.35 | b | 46.14 | c | 48.27 | d | 62.03 | a | 71.40 | 72.74 | 71.45 | 68.43 | 57.52 | 46.07 | 40.87 | 56.93 | a | |||||||
1984 | 42.90 | 43.93 | 49.39 | 55.03 | 67.97 | 68.50 | 70.29 | 65.77 | 67.07 | 49.97 | 47.83 | 43.06 | 55.98 | |||||||||||||
1985 | 36.13 | a | 41.48 | a | 48.16 | 58.30 | 65.00 | 72.30 | 73.77 | 71.35 | 64.60 | 57.39 | 47.43 | 45.39 | 56.78 | |||||||||||
1986 | 47.39 | 43.14 | 49.10 | 58.47 | 65.19 | 68.87 | 70.55 | 69.74 | 64.93 | 55.26 | 45.77 | 38.35 | 56.40 | |||||||||||||
1987 | 41.26 | 41.50 | 44.81 | 55.30 | 59.03 | 69.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.98 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.88 | 43.01 | 47.63 | 55.52 | 64.13 | 72.22 | 72.07 | 70.20 | 66.43 | 58.59 | 48.86 | 41.87 | 56.92 | |||||||||||||
S.D. | 3.41 | 3.76 | 4.37 | 3.71 | 3.25 | 3.28 | 2.63 | 2.93 | 3.66 | 3.36 | 4.05 | 4.45 | 2.13 | |||||||||||||
SKEW | -0.25 | -0.15 | 0.76 | -0.24 | -0.01 | -0.32 | 0.28 | 0.22 | 0.10 | -0.33 | 0.06 | -0.34 | 0.10 | |||||||||||||
MAX | 48.58 | 52.71 | 64.16 | 65.23 | 72.77 | 79.69 | 78.32 | 77.77 | 75.57 | 65.94 | 57.33 | 51.16 | 62.60 | |||||||||||||
MIN | 32.61 | 34.58 | 39.10 | 46.15 | 54.16 | 63.53 | 66.97 | 65.03 | 58.31 | 49.97 | 40.03 | 28.97 | 52.50 | |||||||||||||
YRS | 67 | 70 | 74 | 74 | 69 | 76 | 71 | 72 | 69 | 69 | 68 | 67 | 39 |