YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.60 | f | 60.48 | 60.48 | k | |
1922 | 50.21 | 53.62 | 59.05 | 61.46 | e | 64.66 | 74.46 | b | 78.00 | b | 79.15 | 77.88 | 65.88 | j | 56.07 | 52.50 | b | 64.28 | a | |||||||
1923 | 53.27 | 50.88 | 54.05 | b | 57.15 | 65.66 | 66.50 | 75.65 | 75.03 | 65.60 | o | 61.00 | g | 60.43 | c | 50.87 | a | 60.95 | b | |||||||
1924 | 50.69 | d | 58.37 | b | 54.50 | s | 56.15 | 66.23 | 72.27 | 74.61 | 75.97 | 76.22 | a | 61.50 | b | 58.07 | 55.32 | 64.13 | a | |||||||
1925 | 54.21 | 57.88 | c | 54.00 | 53.67 | a | 62.53 | 68.92 | 75.74 | 74.23 | 70.30 | 62.81 | 56.40 | 55.77 | 62.20 | |||||||||||
1926 | 54.18 | 53.43 | 58.42 | 62.20 | 66.95 | 72.48 | 77.03 | 77.68 | 68.67 | 64.74 | 57.30 | 52.61 | 63.81 | |||||||||||||
1927 | 53.53 | 54.80 | 56.11 | 60.83 | 63.13 | a | 65.48 | 78.10 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.98 | f | |||||
1928 | ----- | z | 54.02 | 57.58 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.80 | j | |
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 | 54.11 | 54.48 | ----- | z | ----- | z | 75.77 | 75.32 | 67.65 | 67.40 | 60.93 | 51.87 | 63.44 | d | ||||||||
1934 | 53.95 | 54.05 | 63.81 | 63.75 | 66.32 | 64.82 | b | 74.97 | 75.32 | 71.55 | 64.95 | 57.45 | 53.11 | 63.67 | ||||||||||||
1935 | 48.02 | 51.98 | 48.85 | 55.47 | 59.21 | 68.35 | 72.82 | 75.18 | 71.58 | 61.89 | 53.84 | b | 51.31 | 59.87 | ||||||||||||
1936 | 51.44 | 48.60 | 55.92 | 57.87 | 62.96 | d | 71.32 | e | 76.82 | c | 75.32 | 72.93 | 63.31 | 59.05 | a | 49.97 | 62.13 | |||||||||
1937 | 37.70 | a | 46.79 | 51.69 | 56.43 | 62.18 | 68.27 | 73.68 | 74.77 | 72.42 | 65.69 | 56.68 | 52.66 | 59.91 | ||||||||||||
1938 | 52.42 | 47.89 | a | 49.50 | a | 56.52 | 61.35 | 65.52 | 72.68 | 74.56 | 73.65 | 62.42 | 55.27 | 52.65 | 60.37 | |||||||||||
1939 | 48.89 | 44.96 | 50.77 | 60.60 | 61.48 | 66.60 | 72.84 | 75.39 | 71.50 | 63.05 | 59.50 | 55.44 | 60.92 | |||||||||||||
1940 | 50.53 | 50.21 | 54.98 | 58.27 | 64.37 | 67.47 | 71.82 | 73.44 | 66.78 | 64.52 | 54.50 | 54.81 | d | 60.97 | ||||||||||||
1941 | 50.03 | 52.31 | a | 53.90 | 54.12 | 62.44 | 64.77 | ----- | z | 70.05 | 65.13 | 59.73 | 58.50 | 48.87 | 58.17 | a | ||||||||||
1942 | 49.73 | 48.70 | 53.63 | 55.23 | 53.71 | 68.82 | 77.48 | a | 75.13 | 69.73 | 65.03 | a | 59.27 | 54.21 | 60.89 | |||||||||||
1943 | 50.84 | 53.46 | 54.61 | 59.12 | 65.16 | 64.80 | 73.03 | 72.77 | 73.45 | 66.34 | 58.80 | 49.95 | 61.86 | |||||||||||||
1944 | 48.35 | 47.43 | a | 53.48 | 55.27 | 59.39 | 63.23 | b | 69.31 | 75.55 | 70.63 | 64.60 | 53.12 | 52.47 | 59.40 | |||||||||||
1945 | 50.76 | 52.14 | 49.00 | 57.35 | 60.63 | 66.28 | 77.10 | 77.34 | 74.50 | 65.52 | 57.10 | 51.05 | 61.56 | |||||||||||||
1946 | 51.35 | 49.98 | 54.14 | b | ----- | z | 61.63 | 72.75 | 78.10 | 77.02 | 75.28 | 61.05 | 53.22 | 52.97 | 62.50 | a | ||||||||||
1947 | 48.84 | 55.46 | 56.78 | a | 60.22 | a | 66.92 | 70.55 | b | 77.84 | 73.95 | 75.10 | 64.81 | 55.25 | 50.90 | 63.05 | ||||||||||
1948 | 54.68 | 49.03 | 49.40 | ----- | z | 62.18 | 67.68 | 73.03 | 73.82 | 73.16 | a | 64.66 | 58.76 | a | 47.65 | 61.28 | a | |||||||||
1949 | 40.48 | c | 47.20 | 51.73 | 62.62 | 60.58 | 70.97 | 74.81 | 74.94 | 75.27 | 64.63 | a | 64.67 | 50.73 | 61.55 | |||||||||||
1950 | 44.77 | a | 54.43 | a | 56.95 | a | 62.25 | 62.52 | a | 68.08 | 75.63 | a | 75.55 | 70.37 | 67.82 | 61.97 | 58.74 | 63.26 | ||||||||
1951 | 50.42 | 51.70 | 54.94 | 58.20 | 64.31 | 66.95 | 76.23 | 74.66 | 75.23 | 68.36 | i | 56.50 | a | 48.39 | 61.59 | a | ||||||||||
1952 | 46.66 | 51.35 | b | 49.21 | 57.85 | 66.84 | 64.87 | 75.89 | 76.87 | 76.00 | 68.08 | a | 53.80 | 47.14 | i | 62.49 | a | |||||||||
1953 | 54.87 | 52.89 | 53.21 | 55.00 | 57.48 | 65.48 | 77.47 | 72.71 | 73.20 | 64.35 | 58.53 | 53.40 | 61.55 | |||||||||||||
1954 | 48.89 | 57.29 | 50.78 | a | 60.00 | 64.22 | a | 67.48 | b | 79.16 | b | 71.92 | a | 71.64 | b | 64.76 | 60.39 | b | 51.62 | b | 62.35 | |||||
1955 | 46.02 | a | 49.31 | b | 54.12 | b | 55.64 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.27 | h |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | 57.94 | d | 68.08 | 73.82 | 78.02 | 73.43 | a | 65.55 | 59.14 | a | 55.31 | 66.41 | d | |||||
1963 | 50.08 | 59.11 | 53.16 | 54.40 | 62.39 | 66.80 | 74.13 | 75.26 | 76.58 | 66.40 | 57.12 | 55.10 | 62.54 | |||||||||||||
1964 | 48.48 | 51.31 | 51.23 | 55.48 | 60.35 | 66.95 | 76.92 | 75.81 | 69.88 | 69.58 | 53.35 | 51.18 | 60.88 | |||||||||||||
1965 | 51.26 | 52.91 | 53.18 | 56.43 | 62.68 | 62.48 | 73.66 | 77.44 | 66.87 | 69.13 | 57.20 | 49.26 | 61.04 | |||||||||||||
1966 | 47.85 | a | 47.20 | 55.44 | 61.27 | 62.45 | 68.83 | 72.97 | 75.76 | 69.27 | 64.47 | 55.02 | 50.40 | 60.91 | ||||||||||||
1967 | 50.79 | 52.39 | 52.22 | a | 47.85 | 61.37 | a | 62.82 | 76.47 | 79.24 | 72.64 | e | 66.81 | 58.88 | 46.18 | 60.64 | ||||||||||
1968 | 48.79 | 54.72 | 53.13 | 56.55 | 61.89 | 68.27 | 74.55 | 70.35 | 70.38 | 62.60 | 55.55 | 44.93 | c | 60.14 | ||||||||||||
1969 | 50.19 | 45.80 | 51.10 | 56.03 | 62.39 | 63.22 | 73.35 | 76.05 | 71.18 | 60.05 | 56.47 | 48.69 | 59.54 | |||||||||||||
1970 | 48.97 | 52.20 | a | 52.37 | 53.33 | 62.26 | 67.53 | 77.76 | 77.79 | 70.38 | 62.63 | 57.02 | a | 47.08 | 60.78 | |||||||||||
1971 | 49.85 | 50.46 | a | 53.35 | 54.72 | a | 58.52 | 66.38 | 75.35 | 77.65 | a | 71.65 | 59.33 | b | 53.63 | 44.32 | a | 59.60 | ||||||||
1972 | 48.17 | a | 53.18 | a | 59.48 | 57.97 | ----- | z | 70.28 | 76.17 | a | 75.23 | c | 69.02 | 60.94 | f | 52.43 | a | 46.33 | a | 60.83 | b | ||||
1973 | 45.55 | 50.27 | 47.63 | 56.41 | a | 63.13 | 71.13 | 72.65 | 74.05 | a | 67.10 | a | 62.89 | 51.50 | 51.07 | b | 59.45 | |||||||||
1974 | 46.29 | 49.40 | b | 51.71 | 55.93 | 62.31 | 69.83 | c | 74.82 | 72.45 | 73.10 | 61.60 | 54.76 | a | 48.89 | 60.09 | ||||||||||
1975 | 50.47 | 48.07 | 50.57 | a | 49.35 | 61.37 | 66.52 | a | 73.47 | 71.74 | 73.50 | 61.60 | 55.52 | 52.56 | 59.56 | |||||||||||
1976 | 52.27 | 50.55 | 52.34 | 53.87 | 64.95 | a | 70.70 | ----- | z | ----- | z | 70.03 | 64.31 | 59.65 | 52.00 | a | 59.07 | b | ||||||||
1977 | 48.92 | a | 54.84 | 49.03 | 59.20 | 56.71 | 69.42 | 75.63 | a | 75.87 | 68.50 | 66.18 | 58.95 | 54.79 | 61.50 | |||||||||||
1978 | 50.50 | 51.07 | 56.23 | 54.28 | 63.71 | 70.53 | 74.90 | 73.87 | 69.77 | ----- | z | ----- | z | 46.21 | 61.11 | b | ||||||||||
1979 | 44.89 | 46.86 | 52.16 | ----- | z | ----- | z | 70.29 | a | 75.73 | ----- | z | ----- | z | ----- | z | 52.93 | ----- | z | 57.14 | f | |||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.20 | 75.44 | 72.87 | 68.08 | ----- | z | ----- | z | 53.58 | a | 67.23 | g | ||||
1981 | 51.76 | ----- | z | 49.74 | 56.63 | 62.02 | 73.83 | 73.73 | 76.35 | a | 70.43 | 59.07 | a | 56.83 | ----- | z | 63.04 | b | ||||||||
1982 | 47.18 | a | 51.91 | 48.87 | a | 55.61 | b | 61.21 | 63.47 | 73.52 | b | 75.16 | 70.78 | 62.42 | a | 51.41 | a | 48.70 | a | 59.19 | ||||||
1983 | 50.71 | 50.25 | 51.98 | a | 52.22 | 62.39 | 65.93 | 71.23 | a | 74.97 | a | 73.53 | 64.65 | a | 53.02 | 48.93 | d | 59.98 | ||||||||
1984 | 52.53 | a | 51.76 | 56.63 | 57.92 | 67.34 | b | 69.66 | b | 78.66 | 77.32 | 77.10 | a | 61.05 | a | 51.45 | ----- | z | 63.77 | a | ||||||
1985 | 48.27 | 50.54 | b | 50.08 | 60.98 | 62.38 | b | 70.62 | 77.95 | a | 73.29 | 66.03 | 62.81 | b | 52.48 | 51.68 | c | 60.59 | ||||||||
1986 | 54.89 | 51.98 | a | 56.27 | a | 57.63 | 62.52 | a | 69.67 | 70.71 | c | 76.42 | a | 64.00 | b | 61.80 | c | 58.32 | 50.87 | 61.26 | ||||||
1987 | 46.74 | b | 50.70 | a | 51.45 | a | ----- | z | 65.27 | 70.42 | 68.23 | 72.55 | a | 72.05 | ----- | z | 54.55 | a | 44.37 | a | 59.63 | b | ||||
1988 | 49.33 | a | 53.50 | b | 56.08 | 58.59 | a | 62.91 | b | 68.31 | a | 74.89 | 73.55 | a | 70.12 | a | 65.38 | b | 54.47 | a | ----- | z | 62.47 | a | ||
1989 | ----- | z | 48.69 | a | 57.13 | a | 63.60 | 62.98 | 68.69 | a | 73.84 | ----- | z | 71.35 | 62.91 | b | 58.86 | a | 51.70 | a | 61.98 | b | ||||
1990 | 51.34 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.34 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.66 | 51.48 | 53.41 | 57.14 | 62.47 | 68.04 | 74.87 | 75.05 | 71.45 | 63.98 | 56.53 | 51.26 | 61.06 | |||||||||||||
S.D. | 3.28 | 3.14 | 3.21 | 3.32 | 2.70 | 2.82 | 2.32 | 2.01 | 3.11 | 2.47 | 2.92 | 3.40 | 1.25 | |||||||||||||
SKEW | -1.12 | 0.26 | 0.61 | -0.17 | -0.63 | 0.07 | -0.51 | -0.24 | -0.13 | 0.11 | 0.22 | 0.10 | 0.52 | |||||||||||||
MAX | 54.89 | 59.11 | 63.81 | 63.75 | 67.34 | 74.46 | 79.16 | 79.24 | 77.88 | 69.58 | 64.67 | 60.48 | 63.81 | |||||||||||||
MIN | 37.70 | 44.96 | 47.63 | 47.85 | 53.71 | 62.48 | 68.23 | 70.05 | 64.00 | 59.07 | 51.41 | 44.32 | 59.19 | |||||||||||||
YRS | 54 | 54 | 55 | 51 | 52 | 55 | 53 | 52 | 53 | 47 | 53 | 51 | 35 |