YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1906 | 43.77 | g | 45.05 | 50.84 | 61.20 | 66.53 | 79.85 | j | 75.05 | 75.24 | 72.12 | 59.05 | 48.17 | 48.44 | 60.17 | b | ||||||||||
1907 | 49.56 | 50.14 | 60.63 | a | 61.88 | a | 64.34 | 76.72 | a | 77.73 | 79.85 | 74.52 | 61.52 | a | 47.40 | a | 45.74 | 62.50 | ||||||||
1908 | 44.28 | a | 46.59 | 58.63 | 61.07 | 67.39 | 77.55 | 74.97 | a | 75.73 | 70.62 | 60.26 | 49.47 | a | 44.18 | 60.89 | ||||||||||
1909 | 47.52 | 46.78 | a | 59.40 | a | 69.61 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.23 | i | |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | 64.04 | p | 71.17 | a | 79.72 | 75.16 | 71.56 | f | 64.02 | e | 55.63 | d | 46.68 | 51.19 | w | 65.40 | f | |||
1917 | 42.62 | g | 48.25 | 52.39 | d | 59.65 | 63.27 | 74.67 | 79.12 | a | 76.53 | b | 71.22 | 60.73 | k | 53.65 | 44.65 | a | 62.34 | b | ||||||
1918 | 36.88 | c | 50.71 | b | 56.64 | b | 57.58 | 68.60 | 76.40 | 80.05 | 77.30 | c | ----- | z | ----- | z | ----- | z | ----- | z | 63.02 | d | ||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | 68.08 | a | 72.33 | c | 78.10 | a | 79.92 | g | 70.80 | b | 63.04 | d | 50.65 | g | 43.91 | d | 66.04 | f |
1920 | 40.98 | i | 47.26 | b | 52.22 | f | 54.33 | f | 68.61 | 74.23 | 74.75 | i | 76.02 | b | 72.59 | b | 61.77 | c | 48.91 | a | 40.60 | b | 61.25 | d | ||
1921 | 48.85 | d | 47.48 | 54.74 | 56.79 | a | 66.58 | a | 69.87 | 73.90 | b | 75.69 | b | 72.76 | c | 60.70 | a | 51.10 | a | 43.50 | n | 61.68 | a | |||
1922 | 34.00 | b | 43.13 | a | 50.38 | f | 56.52 | 67.65 | a | 72.11 | b | 77.98 | a | 76.77 | 74.95 | a | 61.21 | b | 47.40 | f | ----- | z | 62.70 | c | ||
1923 | 39.09 | c | ----- | z | ----- | z | ----- | z | 67.15 | n | 79.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.11 | j | |
1924 | 34.71 | s | ----- | z | 43.50 | l | 57.77 | 64.48 | a | 78.88 | b | 77.11 | 79.15 | 66.02 | a | 61.63 | a | 51.45 | i | ----- | z | 69.29 | e | |||
1925 | ----- | z | 50.18 | q | 55.50 | e | 61.58 | j | 68.31 | ----- | z | ----- | z | 74.87 | 71.05 | b | 55.50 | e | 49.02 | 39.58 | a | 59.12 | e | |||
1926 | 36.95 | a | 48.54 | 49.71 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.07 | i | ||
1927 | ----- | z | ----- | z | ----- | z | 61.79 | a | 69.79 | l | 74.58 | k | 77.98 | 79.63 | 71.67 | 61.97 | b | 54.77 | d | 36.00 | 63.40 | e | ||||
1928 | 42.21 | 41.69 | ----- | z | ----- | z | 68.80 | c | 76.57 | a | 78.98 | 75.02 | 68.07 | a | 60.70 | c | 40.73 | j | 37.15 | 61.02 | c | |||||
1929 | 38.78 | a | 34.76 | a | 45.11 | c | 59.33 | 66.76 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.30 | 41.03 | 46.72 | e | |||
1930 | 33.39 | d | 48.00 | a | 47.13 | 61.52 | b | 65.07 | c | 75.14 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.04 | f | |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | 55.13 | p | 61.75 | 67.92 | 76.92 | 79.87 | 77.82 | f | 66.92 | 56.79 | 45.75 | 35.74 | h | 65.13 | e | |||||||
1933 | 40.69 | 40.02 | a | 51.90 | 55.21 | k | 70.50 | v | 77.53 | 80.43 | c | 78.07 | c | 75.07 | 63.93 | p | 41.33 | i | 45.00 | v | 63.39 | e | ||||
1934 | 39.18 | 44.38 | 47.00 | a | 58.72 | 69.94 | 78.92 | 79.73 | 78.98 | 71.65 | m | 62.98 | i | 51.30 | c | 41.10 | 58.92 | b | ||||||||
1935 | 40.48 | 40.85 | h | 53.96 | c | ----- | z | 63.34 | 72.71 | r | ----- | z | ----- | z | 63.74 | m | ----- | z | ----- | z | ----- | z | 52.60 | i | ||
1936 | 41.71 | q | 44.90 | 53.33 | v | ----- | z | ----- | z | ----- | z | ----- | z | 80.30 | d | 71.95 | 57.54 | c | 47.92 | ----- | z | 60.52 | g | |||
1937 | 37.22 | d | ----- | z | ----- | z | 62.35 | 70.82 | 76.02 | d | 80.08 | 79.19 | ----- | z | ----- | z | ----- | z | ----- | z | 67.61 | f | ||||
1938 | ----- | z | ----- | z | 54.85 | 61.53 | a | 69.32 | 79.15 | 79.71 | j | 78.21 | 72.09 | g | 72.08 | k | ----- | z | ----- | z | 68.61 | g | ||||
1939 | 43.60 | f | 41.46 | 53.67 | a | 62.75 | 70.68 | 79.54 | e | ----- | z | 76.77 | t | 73.67 | ----- | z | 48.07 | a | 45.94 | 59.47 | d | |||||
1940 | 36.17 | a | 45.10 | 53.93 | c | 60.89 | c | 69.64 | j | 74.19 | d | 78.69 | 75.87 | a | 72.22 | 62.65 | d | 46.36 | a | 43.57 | h | 60.61 | b | |||
1941 | 41.82 | a | 46.00 | 46.63 | 57.80 | 66.27 | 70.43 | 76.74 | j | 78.06 | 73.02 | h | 63.08 | a | 51.06 | d | 45.33 | e | 56.65 | b | ||||||
1942 | 40.17 | b | 43.52 | 49.83 | b | 59.47 | 69.07 | h | 78.02 | 78.89 | c | 76.08 | 69.35 | 60.58 | 54.57 | a | 45.58 | 59.64 | a | |||||||
1943 | 42.00 | 48.50 | a | 50.33 | g | 64.27 | 68.34 | 78.17 | 78.83 | d | 81.73 | 74.26 | i | 61.57 | b | 48.06 | n | 41.35 | 62.75 | c | ||||||
1944 | 41.02 | 47.86 | 51.95 | 58.30 | 68.84 | 78.85 | 80.05 | 78.15 | 69.43 | 61.53 | 49.64 | a | 40.02 | a | 60.47 | |||||||||||
1945 | 42.97 | 48.11 | f | 53.98 | 58.66 | a | 71.03 | 74.52 | a | 76.23 | 78.76 | b | 73.62 | a | 59.89 | 52.67 | 42.47 | 62.25 | a | |||||||
1946 | 39.79 | 46.41 | 52.90 | 64.13 | 68.11 | 77.20 | 79.40 | a | 79.50 | e | 71.63 | 63.98 | 50.07 | 48.74 | f | 63.01 | a | |||||||||
1947 | 40.22 | a | 41.96 | a | 50.40 | a | 58.70 | c | 68.68 | 77.42 | 79.90 | 77.79 | 73.36 | b | 66.46 | e | 47.21 | b | 41.29 | c | 60.28 | |||||
1948 | 37.71 | 45.26 | 49.32 | 65.82 | 70.98 | 80.24 | e | 79.54 | d | 80.17 | a | 72.04 | c | 61.46 | d | 48.08 | 48.60 | 61.60 | ||||||||
1949 | 33.65 | a | 46.56 | a | 53.63 | 57.91 | b | 68.12 | j | 76.66 | e | 79.57 | b | 76.68 | 70.19 | a | 58.21 | 54.53 | a | 42.82 | 59.13 | a | ||||
1950 | 46.38 | a | 50.09 | 52.97 | 60.98 | a | 69.00 | 78.20 | c | 75.81 | 76.44 | 70.52 | a | 66.55 | c | 51.95 | a | 46.53 | b | 62.12 | ||||||
1951 | 40.48 | 46.13 | a | 51.47 | 59.00 | 69.20 | a | 80.58 | j | 81.76 | 80.40 | 73.29 | a | 65.45 | c | 49.48 | 45.55 | 60.20 | a | |||||||
1952 | 47.50 | 47.05 | a | 49.89 | 59.40 | 69.77 | 80.21 | f | 77.75 | a | 82.57 | d | 71.63 | 61.58 | a | 46.17 | a | 43.15 | 59.68 | a | ||||||
1953 | 49.87 | 45.38 | 56.92 | 61.83 | d | 68.30 | d | 80.62 | i | 81.52 | h | 78.89 | 73.27 | 63.53 | a | 51.77 | 39.87 | a | 58.96 | b | ||||||
1954 | 46.10 | a | 52.45 | 52.85 | 65.00 | a | 65.98 | a | 75.72 | a | 80.75 | a | 78.55 | a | 74.80 | 63.58 | 51.24 | a | 44.43 | a | 62.62 | |||||
1955 | 41.58 | 42.27 | 54.85 | 66.03 | 70.45 | c | 77.85 | 80.02 | 78.89 | 74.42 | 62.92 | a | 50.27 | 45.43 | b | 62.08 | ||||||||||
1956 | 44.39 | 41.90 | c | 56.31 | b | 59.52 | 72.93 | a | 80.38 | m | 80.31 | 78.63 | a | 73.59 | a | 64.84 | 47.72 | a | 45.45 | a | 60.51 | a | ||||
1957 | 43.60 | a | 52.64 | 53.76 | b | 59.47 | 66.81 | 76.23 | 79.38 | o | 77.79 | 70.73 | 59.40 | a | 45.52 | 46.00 | 59.27 | a | ||||||||
1958 | 39.06 | 44.23 | 45.95 | a | 56.88 | 68.77 | a | 79.16 | a | 81.26 | 79.33 | p | 72.07 | b | 58.47 | 51.35 | 42.32 | 58.14 | a | |||||||
1959 | 41.66 | 44.25 | 51.15 | 59.03 | 68.58 | 76.02 | 76.85 | 79.42 | 74.80 | 60.77 | 45.25 | 40.37 | 59.85 | |||||||||||||
1960 | 38.55 | 38.64 | 48.05 | 59.97 | 67.61 | 79.07 | 75.85 | 75.02 | 70.18 | 65.77 | r | 50.74 | i | 36.74 | 58.97 | b | ||||||||||
1961 | 38.34 | 46.21 | 50.33 | e | 59.47 | 69.60 | 75.83 | 76.02 | h | 76.29 | 71.37 | 62.66 | b | 45.58 | 42.97 | 58.06 | a | |||||||||
1962 | 37.15 | 50.93 | 49.06 | 61.53 | 73.32 | 75.48 | b | 78.68 | 77.88 | e | 71.78 | 62.84 | 52.18 | b | 43.63 | d | 61.21 | |||||||||
1963 | 37.05 | 46.23 | 53.16 | b | 64.58 | 68.76 | j | 76.28 | 80.27 | 78.82 | 72.63 | 65.71 | 50.65 | 38.98 | 60.40 | a | ||||||||||
1964 | 39.76 | 38.90 | 50.57 | b | 61.52 | 71.47 | 77.45 | 81.66 | 80.48 | c | 71.60 | 63.02 | k | 51.28 | 44.27 | 60.81 | a | |||||||||
1965 | 46.00 | 41.84 | 45.73 | 64.43 | 69.94 | 76.27 | 80.37 | 75.61 | 71.98 | 62.98 | j | 55.78 | 46.63 | 61.33 | a | |||||||||||
1966 | 38.17 | a | 41.25 | 53.85 | 60.80 | 68.60 | 75.87 | 81.85 | 75.81 | 70.45 | 59.81 | g | 53.59 | b | 40.95 | 60.11 | a | |||||||||
1967 | 42.77 | 45.30 | 58.11 | 66.17 | 67.74 | 76.85 | 77.76 | b | 75.20 | c | 68.57 | 62.44 | g | 50.89 | b | 39.85 | 60.84 | a | ||||||||
1968 | 43.11 | 44.55 | 50.73 | 58.63 | 67.32 | 76.30 | 74.98 | 75.65 | e | 68.73 | d | 63.45 | b | 49.30 | b | 42.08 | 59.57 | |||||||||
1969 | 47.55 | 46.43 | 44.10 | 61.80 | 68.58 | 74.97 | 81.69 | 79.81 | e | 71.48 | 63.00 | i | 50.64 | b | 45.35 | 61.13 | a | |||||||||
1970 | 41.45 | a | 46.38 | 49.05 | 60.02 | 68.47 | 73.92 | 77.74 | 77.58 | 70.62 | 56.07 | i | 49.72 | a | 46.31 | 60.11 | a | |||||||||
1971 | 43.95 | 44.59 | 53.29 | 59.27 | 69.08 | 77.17 | 78.97 | 72.13 | 69.78 | 61.98 | e | 51.59 | b | 44.61 | 60.53 | |||||||||||
1972 | 43.47 | 48.29 | 57.39 | 64.60 | 67.71 | 75.33 | 77.47 | 74.45 | a | 70.32 | 64.59 | h | 45.02 | 41.40 | 60.50 | a | ||||||||||
1973 | 37.31 | 41.48 | 50.63 | 55.15 | 64.61 | d | 70.08 | ----- | z | 76.11 | 68.85 | 61.72 | h | 53.32 | 43.35 | 56.09 | b | |||||||||
1974 | 41.52 | b | 44.62 | 57.23 | 61.22 | 71.90 | 75.78 | 78.63 | 74.05 | 62.47 | 59.03 | 49.52 | f | 40.85 | 60.66 | a | ||||||||||
1975 | 42.48 | 44.87 | a | 50.32 | 57.20 | 64.45 | 74.58 | 73.23 | 73.24 | 64.08 | ----- | z | 47.95 | 42.06 | 57.68 | a | ||||||||||
1976 | 40.23 | 51.36 | a | 52.95 | 62.17 | 64.90 | 75.97 | 74.66 | 75.35 | 67.73 | 54.02 | g | 43.15 | 40.21 | 58.97 | a | ||||||||||
1977 | 36.37 | 45.62 | 49.16 | 59.03 | 70.56 | 76.67 | 78.82 | 79.27 | 75.11 | b | 61.97 | 52.07 | 47.12 | a | 60.98 | |||||||||||
1978 | 37.05 | ----- | z | ----- | z | 64.07 | 69.81 | 73.21 | k | 80.08 | a | 77.29 | 69.37 | 58.14 | q | 50.47 | 40.47 | a | 61.07 | d | ||||||
1979 | 35.94 | 43.70 | 50.85 | a | 59.87 | ----- | z | 72.12 | ----- | z | ----- | z | 70.78 | 62.74 | 44.42 | 41.98 | b | 53.60 | c | |||||||
1980 | 41.35 | 45.53 | 49.76 | 56.82 | 67.69 | 81.67 | 82.97 | 78.42 | 71.62 | 58.15 | 45.60 | 44.92 | 60.37 | |||||||||||||
1981 | 41.44 | 44.82 | 50.53 | 61.87 | 66.92 | 76.88 | 78.78 | b | 73.90 | 70.17 | 61.23 | 52.58 | 45.98 | 60.42 | ||||||||||||
1982 | 41.22 | a | 43.64 | 53.66 | 60.40 | 66.94 | 75.65 | 80.33 | b | 79.15 | 72.32 | 61.04 | g | ----- | z | 39.95 | 61.32 | b | ||||||||
1983 | 39.45 | 45.00 | 51.93 | b | 54.32 | 65.62 | a | 74.35 | 80.39 | 79.26 | 73.67 | 63.24 | 51.65 | 36.77 | a | 59.64 | ||||||||||
1984 | 37.81 | 44.98 | 50.87 | 58.97 | a | 69.63 | 73.75 | n | 77.65 | d | 75.23 | 68.27 | 58.15 | 48.80 | c | 46.68 | 57.91 | a | ||||||||
1985 | 38.11 | 43.02 | 55.03 | a | 61.19 | n | 69.68 | 73.05 | b | 77.60 | j | 78.90 | 70.52 | a | 59.35 | e | 51.15 | 39.19 | 57.80 | b | ||||||
1986 | 44.32 | 47.48 | 54.37 | 64.33 | 68.42 | e | 73.45 | 76.47 | 76.98 | b | 70.65 | 59.40 | 48.07 | c | 40.81 | d | 60.40 | |||||||||
1987 | 40.27 | a | 44.86 | 47.23 | 56.27 | 66.03 | 73.62 | 78.26 | 77.31 | 69.20 | 62.24 | 48.88 | 40.48 | 58.72 | ||||||||||||
1988 | 36.71 | 43.69 | 50.10 | 59.24 | a | 67.40 | 75.08 | 76.58 | a | 76.54 | c | 70.47 | k | 61.69 | b | 51.15 | 40.10 | 58.03 | a | |||||||
1989 | 43.05 | a | 43.21 | 55.17 | a | 62.95 | 72.68 | a | 76.52 | 78.97 | 76.55 | a | 68.25 | 61.59 | d | 50.07 | 36.95 | j | 62.64 | a | ||||||
1990 | 43.56 | e | 45.95 | 52.68 | c | 61.83 | 69.38 | b | 82.85 | 75.47 | 74.13 | 71.08 | f | 59.61 | 51.77 | 44.75 | i | 61.72 | b | |||||||
1991 | 38.13 | e | 46.43 | u | 52.85 | 61.02 | 72.08 | 77.13 | 76.18 | 75.79 | c | 65.90 | 60.45 | a | 45.69 | a | 42.69 | e | 60.72 | a | ||||||
1992 | 39.32 | a | 46.60 | 52.65 | k | 60.70 | 65.44 | 73.24 | c | 76.94 | 75.31 | b | 71.08 | f | 61.98 | j | 46.22 | c | ----- | z | 60.47 | d | ||||
1993 | ----- | z | 43.98 | 51.10 | 59.76 | g | 66.88 | e | 78.57 | p | 79.74 | 77.61 | 69.92 | 58.74 | 47.61 | p | 42.79 | 61.35 | d | |||||||
1994 | 40.21 | 44.14 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.60 | b | 71.95 | ----- | z | 51.55 | 46.10 | 55.43 | f | |||||
1995 | 43.03 | a | 50.14 | 51.00 | 59.73 | 69.20 | d | 75.27 | 80.18 | 79.19 | 69.06 | f | 62.14 | c | 51.28 | 43.45 | a | 60.42 | a | |||||||
1996 | 41.13 | 47.94 | c | 49.48 | b | 60.16 | a | ----- | z | ----- | z | 79.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.61 | g | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.88 | 45.39 | 52.04 | 60.51 | 68.30 | 76.19 | 78.50 | 77.38 | 70.88 | 61.28 | 49.55 | 42.77 | 60.79 | |||||||||||||
S.D. | 3.69 | 3.21 | 3.46 | 2.62 | 2.24 | 2.52 | 2.12 | 2.09 | 2.67 | 2.45 | 3.00 | 2.94 | 1.07 | |||||||||||||
SKEW | 0.40 | -0.27 | 0.09 | 0.15 | -0.09 | -0.20 | -0.43 | -0.05 | -0.87 | -0.14 | -0.34 | -0.18 | 0.13 | |||||||||||||
MAX | 49.87 | 52.64 | 60.63 | 66.17 | 73.32 | 82.85 | 82.97 | 82.57 | 75.11 | 66.55 | 55.78 | 48.60 | 62.62 | |||||||||||||
MIN | 33.39 | 34.76 | 44.10 | 54.32 | 63.27 | 69.87 | 73.23 | 72.13 | 62.47 | 55.50 | 41.30 | 36.00 | 58.72 | |||||||||||||
YRS | 71 | 71 | 69 | 70 | 71 | 67 | 65 | 71 | 67 | 55 | 65 | 63 | 18 |