YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1912 | 49.22 | a | 50.84 | 55.89 | 58.43 | 68.97 | 81.55 | 80.81 | 81.06 | 75.63 | 65.45 | 56.58 | 45.56 | 64.17 | ||||||||||||
1913 | 45.10 | a | 50.30 | 54.68 | 63.80 | 70.35 | 77.78 | 83.50 | 82.69 | 77.57 | 66.02 | 59.15 | 48.26 | 64.93 | ||||||||||||
1914 | 52.74 | 52.09 | 60.06 | 65.07 | 71.71 | 81.73 | 83.76 | 84.31 | 79.95 | 67.08 | 61.20 | 48.52 | 67.35 | |||||||||||||
1915 | 47.55 | 51.09 | 53.71 | 61.37 | 66.18 | 79.53 | 84.10 | 85.34 | 77.25 | 70.68 | 56.37 | 49.32 | 65.21 | |||||||||||||
1916 | 50.53 | 57.17 | 60.73 | 63.45 | 69.29 | 80.53 | 84.61 | 82.03 | 78.40 | 70.50 | v | ----- | z | ----- | z | 69.64 | c | |||||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 72.61 | u | 70.76 | 57.10 | 53.48 | 60.45 | i | |||
1935 | 52.81 | 54.66 | 55.03 | 63.70 | 68.05 | 81.97 | 86.08 | 82.39 | 77.80 | 67.47 | 54.00 | 50.56 | 66.21 | |||||||||||||
1936 | 47.40 | a | 51.74 | 58.11 | 66.15 | 75.19 | 83.95 | 87.40 | 83.08 | 76.97 | 67.53 | 58.27 | 48.74 | 67.04 | ||||||||||||
1937 | 40.03 | b | 50.69 | a | 54.32 | 61.75 | 72.95 | 80.33 | 85.68 | 85.63 | 81.47 | 69.52 | j | 58.00 | 53.32 | 65.83 | a | |||||||||
1938 | 50.68 | 53.11 | 55.73 | 64.22 | 70.48 | 80.77 | 83.37 | 82.71 | 80.00 | 68.27 | a | 53.40 | a | 51.93 | a | 66.22 | ||||||||||
1939 | 49.06 | 43.55 | 57.52 | 65.76 | a | 73.37 | 82.50 | 86.35 | 83.64 | b | 79.85 | 67.56 | 62.30 | 55.63 | 67.26 | |||||||||||
1940 | 52.03 | 52.41 | a | 59.60 | 65.18 | 75.71 | 82.43 | 86.65 | 84.16 | 80.28 | 69.58 | 55.77 | 55.47 | 68.27 | ||||||||||||
1941 | 51.16 | 55.30 | 55.68 | 58.57 | 71.37 | 78.65 | 85.52 | a | 82.97 | 77.63 | 65.85 | 59.30 | 50.50 | 66.04 | ||||||||||||
1942 | 51.61 | 48.77 | 53.55 | 61.63 | 70.65 | 80.73 | 88.81 | 84.31 | 79.95 | 67.73 | 60.65 | 52.35 | 66.73 | |||||||||||||
1943 | 52.03 | 57.16 | 59.52 | 68.07 | a | 73.84 | 81.45 | 87.39 | 83.61 | 80.98 | 70.00 | a | 59.32 | 51.53 | 68.74 | |||||||||||
1944 | 48.29 | 49.90 | 54.24 | 60.90 | 71.84 | 79.02 | 86.18 | 85.89 | 79.07 | 71.24 | 54.72 | 50.66 | 65.99 | |||||||||||||
1945 | 49.29 | 51.64 | 53.52 | 62.12 | 71.95 | a | 77.67 | 86.92 | 85.16 | 80.12 | 70.10 | 56.03 | 48.47 | 66.08 | ||||||||||||
1946 | 47.00 | 50.16 | 58.00 | 69.07 | 71.53 | 83.95 | 85.73 | 83.66 | 80.07 | 64.26 | 53.84 | a | 53.19 | 66.70 | ||||||||||||
1947 | 48.37 | 55.41 | 58.34 | 63.68 | 75.94 | 80.82 | 87.89 | 83.74 | 81.67 | 69.07 | a | 53.59 | b | 47.60 | a | 67.18 | ||||||||||
1948 | 49.87 | 50.29 | 53.19 | 66.10 | 73.06 | 82.22 | 86.79 | 85.31 | 82.37 | 72.48 | 52.68 | 50.68 | 67.09 | |||||||||||||
1949 | 43.64 | b | 49.43 | 56.52 | 65.63 | 71.03 | 81.63 | 84.82 | 83.35 | 82.18 | 65.90 | 62.73 | 50.05 | 66.41 | ||||||||||||
1950 | 48.47 | b | 55.23 | 58.05 | 67.13 | 69.81 | 79.32 | 82.13 | 83.06 | 75.97 | 73.85 | 61.07 | a | 54.42 | 67.38 | |||||||||||
1951 | 48.82 | 51.64 | 55.82 | 63.75 | 71.89 | 77.37 | 86.87 | 83.73 | 80.50 | 70.05 | 56.38 | 49.60 | 66.37 | |||||||||||||
1952 | 49.58 | 49.52 | 50.66 | 63.32 | 73.58 | 80.55 | a | 84.87 | 84.84 | 81.92 | 72.76 | 54.15 | 47.98 | 66.14 | ||||||||||||
1953 | 50.42 | 48.84 | 57.39 | 62.57 | 66.27 | 82.02 | 86.29 | 85.60 | 80.20 | 68.44 | 59.10 | 45.56 | 66.06 | |||||||||||||
1954 | 50.76 | 58.11 | 57.10 | b | 67.98 | 73.81 | 80.58 | 85.82 | 82.48 | a | 81.13 | 71.24 | 59.52 | 51.85 | a | 68.37 | ||||||||||
1955 | 44.92 | 46.70 | 56.42 | 61.30 | 69.50 | 79.38 | 83.34 | 81.31 | 79.03 | 71.71 | 55.79 | b | 52.45 | 65.15 | ||||||||||||
1956 | 53.27 | 46.10 | 56.35 | 61.63 | 73.03 | 84.28 | 84.44 | 82.19 | 81.71 | a | 67.77 | 55.12 | b | 49.62 | c | 66.30 | ||||||||||
1957 | 51.74 | 57.93 | 56.26 | 60.57 | b | 68.02 | 83.42 | 87.77 | 84.09 | b | 79.24 | a | 67.02 | 51.90 | a | 51.58 | 66.63 | |||||||||
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | 51.05 | 49.30 | 55.89 | 67.03 | 70.60 | 84.38 | 86.28 | b | 81.63 | 78.75 | 68.66 | 57.17 | 51.11 | 66.82 | ||||||||||||
1960 | 45.34 | 46.02 | 58.45 | 63.22 | 69.98 | 82.62 | 86.03 | 84.98 | 81.26 | i | 66.92 | 57.77 | 47.40 | b | 64.43 | a | ||||||||||
1961 | 52.50 | 53.00 | 57.42 | 64.38 | 71.35 | 84.47 | 86.58 | 83.90 | 77.77 | 68.19 | 54.20 | 49.58 | 66.95 | |||||||||||||
1962 | 48.32 | 53.36 | 51.40 | 67.23 | 69.68 | 78.75 | 85.00 | 86.29 | 81.80 | 68.76 | 60.12 | 52.73 | 66.95 | |||||||||||||
1963 | 46.98 | 55.62 | 55.68 | c | 61.13 | 74.58 | 77.81 | a | 87.53 | 82.65 | 82.13 | 71.97 | 57.27 | b | 50.03 | 66.95 | ||||||||||
1964 | 44.52 | a | 45.26 | 51.95 | 61.12 | 70.27 | a | 79.83 | a | 86.55 | b | 81.56 | 76.57 | b | 70.94 | 53.30 | 50.40 | 64.36 | ||||||||
1965 | 51.05 | 50.11 | e | 52.98 | 60.43 | g | 67.94 | 75.30 | 86.00 | 84.40 | 77.07 | 69.97 | 61.22 | 51.58 | 66.15 | a | ||||||||||
1966 | 46.42 | 46.29 | 57.05 | 63.62 | 73.84 | 81.02 | 85.74 | 84.10 | 78.53 | 66.92 | 59.15 | 49.68 | 66.03 | |||||||||||||
1967 | 47.98 | 53.32 | 59.87 | 60.75 | 69.68 | 78.83 | 85.03 | 84.53 | 80.20 | 69.95 | 60.68 | 47.10 | 66.49 | |||||||||||||
1968 | 50.81 | 57.34 | 56.90 | 61.10 | 70.48 | 81.15 | 84.24 | 80.23 | 79.43 | 69.11 | 56.08 | 47.85 | 66.23 | |||||||||||||
1969 | 53.53 | 50.89 | 51.71 | 64.60 | 73.40 | 79.43 | 86.52 | 87.50 | 81.67 | 66.03 | 58.27 | 51.50 | 67.09 | |||||||||||||
1970 | 47.85 | 55.11 | 53.44 | 58.20 | 72.89 | 82.08 | 87.03 | 85.02 | 76.53 | 63.79 | 58.35 | 49.73 | 65.83 | |||||||||||||
1971 | 48.40 | 50.39 | 57.65 | 61.97 | 68.27 | 79.93 | 88.16 | 81.84 | 78.93 | 64.63 | 55.95 | 47.35 | 65.29 | |||||||||||||
1972 | 48.81 | 53.02 | 63.08 | 63.28 | 71.02 | 81.22 | 86.76 | 82.94 | 78.77 | 67.63 | 51.72 | 48.60 | 66.40 | |||||||||||||
1973 | 46.68 | 52.95 | 50.53 | 59.20 | 72.98 | 81.72 | 85.61 | 86.50 | 79.43 | 69.73 | 57.10 | 50.69 | 66.09 | |||||||||||||
1974 | 49.73 | 50.89 | 59.82 | 64.18 | 73.73 | 86.05 | 84.94 | 84.03 | 79.93 | 70.55 | 56.93 | 46.18 | 67.25 | |||||||||||||
1975 | 48.97 | 49.95 | 54.79 | 58.28 | 69.47 | 80.02 | 85.42 | 86.27 | 80.60 | 68.65 | 57.32 | 51.11 | 65.90 | |||||||||||||
1976 | 49.79 | 56.55 | 56.82 | 63.38 | 73.50 | 82.18 | 84.95 | 85.35 | 77.47 | 67.02 | 58.67 | 51.00 | 67.22 | |||||||||||||
1977 | 49.25 | a | 53.84 | 53.58 | 64.57 | 69.18 | 83.22 | 87.90 | 86.87 | 82.12 | 72.60 | 59.00 | 54.68 | 68.07 | ||||||||||||
1978 | 51.22 | a | 52.21 | 59.32 | 62.78 | 70.85 | 83.43 | 87.98 | 84.63 | 81.15 | 72.73 | 57.27 | 48.11 | 67.64 | ||||||||||||
1979 | 46.73 | a | 51.93 | 54.44 | 63.08 | 71.42 | 82.27 | 87.11 | 81.84 | 83.28 | 70.89 | 54.80 | 53.19 | 66.75 | ||||||||||||
1980 | 52.32 | 56.03 | 55.52 | 63.40 | 69.32 | 83.47 | 89.15 | 84.08 | 80.63 | 69.60 | 58.43 | 56.56 | 68.21 | |||||||||||||
1981 | 54.65 | 56.11 | 56.19 | 68.13 | 72.52 | 86.20 | 86.16 | 87.39 | 81.45 | 68.68 | 61.23 | 53.66 | 69.36 | |||||||||||||
1982 | 50.15 | a | 53.73 | 56.76 | 64.57 | 70.92 | 79.40 | 86.13 | 85.00 | 79.43 | 66.48 | a | 57.88 | 49.50 | a | 66.66 | ||||||||||
1983 | 50.95 | 52.07 | 55.44 | 58.25 | 70.55 | 78.93 | 86.47 | 83.56 | 82.98 | 67.79 | 55.27 | 51.10 | 66.11 | |||||||||||||
1984 | 50.02 | 51.31 | 57.37 | 61.78 | 77.77 | 82.32 | 83.73 | 81.81 | 80.87 | 65.26 | 56.17 | 50.16 | 66.55 | |||||||||||||
1985 | 49.50 | 50.64 | 57.00 | a | 66.02 | 74.37 | 83.10 | 87.45 | 85.52 | 75.98 | 68.52 | 56.10 | 50.27 | 67.04 | ||||||||||||
1986 | 55.71 | 54.45 | 61.34 | 66.68 | 74.60 | 85.05 | 83.98 | 85.11 | 76.17 | 67.02 | 58.03 | 49.89 | 68.17 | |||||||||||||
1987 | 48.85 | a | 52.73 | 55.53 | 68.10 | 72.89 | 84.12 | 85.79 | 84.28 | a | 79.10 | 74.08 | 57.53 | 48.63 | 67.64 | |||||||||||
1988 | 49.50 | 55.48 | 58.35 | 65.12 | 73.53 | 83.40 | 87.55 | 85.32 | 78.72 | 73.98 | 57.37 | 49.95 | 68.19 | |||||||||||||
1989 | 49.00 | 56.66 | 63.24 | 71.47 | 75.10 | 83.37 | 89.22 | a | 85.06 | 82.63 | 69.26 | 59.07 | 50.37 | 69.54 | ||||||||||||
1990 | 48.88 | a | 50.37 | a | 60.02 | 67.28 | 73.34 | 86.62 | 84.15 | 80.56 | 80.58 | 69.81 | 60.02 | 49.60 | 67.60 | |||||||||||
1991 | 50.16 | 57.96 | 53.45 | 62.08 | 71.23 | 78.80 | 86.66 | 86.10 | 80.10 | 72.32 | 56.77 | 52.52 | 67.35 | |||||||||||||
1992 | 50.32 | 55.17 | 57.07 | a | 66.40 | 74.77 | 81.40 | 84.79 | 83.90 | 81.32 | 71.74 | 53.82 | 49.98 | 67.56 | ||||||||||||
1993 | 53.58 | 52.86 | 58.15 | 64.45 | 74.61 | 81.32 | 86.11 | 84.69 | 79.10 | 69.97 | 56.12 | 50.90 | 67.65 | |||||||||||||
1994 | 50.55 | a | 52.56 | a | 59.76 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.29 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.48 | 52.27 | 56.47 | 63.71 | 71.75 | 81.42 | 85.91 | 84.00 | 79.68 | 69.03 | 57.21 | 50.50 | 66.81 | |||||||||||||
S.D. | 2.71 | 3.31 | 2.78 | 2.90 | 2.41 | 2.31 | 1.63 | 1.66 | 1.92 | 2.48 | 2.57 | 2.36 | 1.08 | |||||||||||||
SKEW | -0.62 | -0.30 | 0.08 | 0.11 | -0.06 | -0.02 | -0.48 | -0.14 | -0.30 | 0.07 | -0.04 | 0.28 | 0.08 | |||||||||||||
MAX | 55.71 | 58.11 | 63.24 | 71.47 | 77.77 | 86.62 | 89.22 | 87.50 | 83.28 | 74.08 | 62.73 | 56.56 | 69.54 | |||||||||||||
MIN | 40.03 | 43.55 | 50.53 | 58.20 | 66.18 | 75.30 | 80.81 | 80.23 | 75.63 | 63.79 | 51.72 | 45.56 | 64.17 | |||||||||||||
YRS | 64 | 64 | 64 | 62 | 63 | 63 | 63 | 63 | 62 | 62 | 63 | 63 | 59 |