| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1932 | ----- | z | ----- | z | ----- | z | ----- | z | 66.13 | 74.90 | 76.26 | 79.16 | 78.33 | 68.94 | 61.97 | 49.90 | 69.45 | |||||||||
| 1933 | 49.97 | 53.36 | 57.30 | a | 62.27 | 60.10 | 71.07 | 77.23 | 78.26 | 71.00 | 71.52 | 63.87 | 55.81 | 64.31 | ||||||||||||
| 1934 | 58.84 | 62.25 | 69.45 | 69.17 | 70.26 | 73.27 | 76.29 | 78.77 | 77.30 | 70.58 | 59.57 | 55.16 | 68.41 | |||||||||||||
| 1935 | 52.97 | 58.82 | 54.94 | 62.53 | 67.74 | 75.77 | 77.10 | 81.55 | 80.60 | 66.87 | 58.27 | 57.00 | 66.18 | |||||||||||||
| 1936 | 55.55 | 55.86 | 59.16 | 66.53 | 72.55 | 74.47 | 77.23 | 81.10 | 78.23 | 74.00 | 60.00 | 53.87 | 67.38 | |||||||||||||
| 1937 | 44.19 | 51.59 | a | 57.41 | i | 59.80 | 68.42 | 73.93 | 77.90 | 80.77 | 77.50 | 74.39 | 60.50 | 58.39 | 66.13 | |||||||||||
| 1938 | 56.06 | 55.25 | 55.23 | 64.27 | 71.10 | 75.77 | 83.58 | 81.68 | 80.08 | d | 70.03 | 58.67 | 56.48 | 67.35 | ||||||||||||
| 1939 | 53.23 | 51.75 | 61.65 | 70.23 | 72.26 | 73.35 | g | 80.32 | 83.61 | 80.73 | 70.06 | 63.80 | 58.16 | 67.80 | ||||||||||||
| 1940 | 57.55 | 57.14 | 62.90 | 64.27 | 71.52 | 78.80 | 79.58 | 83.58 | 76.00 | 70.13 | 59.00 | 56.68 | 68.10 | |||||||||||||
| 1941 | 58.42 | 61.89 | 66.39 | 63.57 | 68.84 | 73.38 | a | 80.16 | 78.35 | 74.60 | 67.84 | 63.13 | 55.03 | 67.63 | ||||||||||||
| 1942 | 57.06 | 55.18 | 59.97 | 62.93 | 66.45 | 73.67 | 79.90 | 81.26 | 78.97 | 71.48 | 59.73 | 55.32 | 66.83 | |||||||||||||
| 1943 | 53.03 | 61.82 | 61.52 | 65.47 | 67.84 | 70.43 | 77.77 | 77.97 | 82.83 | 68.32 | 62.52 | a | 55.39 | 67.08 | ||||||||||||
| 1944 | 56.65 | 52.72 | 60.06 | 59.97 | 67.13 | 69.83 | 78.00 | 80.19 | 79.00 | a | 73.13 | 57.87 | 57.65 | 66.02 | ||||||||||||
| 1945 | 56.90 | 54.96 | 53.97 | 61.13 | 65.87 | 74.07 | 81.97 | 78.16 | 76.63 | 68.87 | 55.73 | 54.00 | 65.19 | |||||||||||||
| 1946 | 53.26 | 54.50 | 57.03 | 60.77 | 68.68 | 70.00 | 78.06 | 76.74 | 75.90 | 62.90 | 54.63 | 53.32 | 63.82 | |||||||||||||
| 1947 | 49.52 | 59.79 | 61.65 | 66.03 | 71.10 | 69.93 | 74.29 | 74.58 | 78.07 | 65.48 | 57.80 | 55.03 | 65.27 | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.00 | 74.00 | 74.53 | 66.48 | 56.00 | 47.13 | 65.36 | |||||||
| 1949 | 45.71 | 50.29 | 56.32 | 65.23 | 67.68 | 72.80 | 75.97 | 77.06 | 75.43 | 63.65 | 64.21 | a | 50.16 | 63.71 | ||||||||||||
| 1950 | 44.48 | 55.75 | 56.58 | 62.33 | 66.23 | 68.80 | 77.16 | 81.00 | 73.90 | 64.87 | 60.70 | 56.77 | 64.05 | |||||||||||||
| 1951 | 49.81 | 54.50 | 55.45 | 62.67 | 66.29 | 73.87 | 75.03 | 77.00 | 76.23 | 65.84 | 59.23 | 48.73 | a | 63.72 | ||||||||||||
| 1952 | 48.26 | 54.93 | 53.81 | 62.53 | 65.68 | 66.90 | 77.39 | 75.71 | 77.31 | a | 72.03 | a | 57.60 | 53.00 | 63.76 | |||||||||||
| 1953 | 56.35 | 55.18 | 55.81 | 61.37 | 62.58 | 64.90 | 75.10 | a | 74.48 | 76.97 | 67.84 | 60.23 | 53.68 | 63.71 | ||||||||||||
| 1954 | 51.00 | 59.14 | 57.39 | 62.43 | 67.06 | 65.67 | 73.16 | 72.23 | 70.83 | 68.52 | 60.83 | 53.23 | 63.46 | |||||||||||||
| 1955 | 51.00 | 52.43 | 55.10 | 55.70 | 63.74 | 68.60 | 70.39 | 74.65 | 74.72 | a | 66.90 | 55.87 | 52.26 | 61.78 | ||||||||||||
| 1956 | 50.68 | 48.03 | 56.13 | 62.60 | 65.87 | 69.07 | 75.52 | 75.87 | 74.40 | 64.29 | 59.33 | 54.00 | a | 62.98 | ||||||||||||
| 1957 | 46.32 | 56.46 | 57.03 | 62.00 | 65.65 | 71.40 | 74.23 | 75.81 | 78.10 | 64.65 | 58.20 | 53.77 | 63.63 | |||||||||||||
| 1958 | 56.65 | 58.64 | 56.26 | 61.80 | 70.03 | 71.00 | 77.65 | 80.06 | 76.40 | 72.71 | 59.77 | 59.27 | a | 66.69 | ||||||||||||
| 1959 | 53.84 | 53.71 | 58.45 | 64.43 | 65.45 | 70.17 | 77.42 | 77.39 | 70.83 | 68.71 | 62.63 | 54.10 | 64.76 | |||||||||||||
| 1960 | 51.55 | 54.59 | 58.29 | 62.50 | 62.94 | 72.67 | 75.87 | 74.97 | 76.57 | 67.03 | 56.37 | 54.32 | 63.97 | |||||||||||||
| 1961 | 58.13 | 55.54 | 56.06 | 60.50 | 60.71 | 71.53 | 75.19 | 78.35 | 72.07 | 66.94 | 57.36 | h | 51.31 | e | 64.21 | |||||||||||
| 1962 | 51.52 | 52.75 | 55.29 | 65.47 | 60.58 | 69.17 | 74.84 | 76.58 | 75.37 | 66.63 | a | 63.70 | j | ----- | z | 64.82 | ||||||||||
| 1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.16 | 57.93 | 55.90 | 60.33 | ||||
| 1964 | 52.39 | 56.41 | 56.29 | 59.17 | 64.65 | 70.07 | 76.97 | 78.55 | 75.63 | 71.42 | 55.67 | 51.39 | 64.05 | |||||||||||||
| 1965 | 51.71 | 56.18 | 63.39 | 62.04 | b | 65.29 | 71.03 | 78.81 | 81.23 | a | 76.53 | 72.71 | 58.70 | 49.65 | 65.61 | |||||||||||
| 1966 | 51.81 | 53.89 | 56.32 | 66.17 | 67.87 | 75.00 | a | 75.68 | 79.52 | 78.33 | 66.74 | 58.03 | 53.32 | 65.22 | ||||||||||||
| 1967 | 51.35 | 56.25 | 54.26 | 55.57 | 68.84 | 74.23 | 80.90 | 84.87 | 80.87 | 68.06 | 59.93 | 49.67 | a | 65.40 | ||||||||||||
| 1968 | 50.68 | 61.14 | 60.42 | 61.57 | 66.65 | 73.70 | 78.39 | 76.16 | 75.77 | 66.71 | 58.40 | 50.00 | 64.96 | |||||||||||||
| 1969 | 45.90 | 49.71 | 60.77 | 60.73 | 69.97 | 71.37 | 76.39 | 78.77 | 76.70 | 66.23 | 60.87 | 54.48 | 64.32 | |||||||||||||
| 1970 | 53.00 | 61.50 | 59.29 | 58.33 | 67.55 | 74.57 | 79.97 | 77.90 | 74.20 | 66.29 | 58.67 | 49.97 | 65.10 | |||||||||||||
| 1971 | 49.19 | 54.82 | 53.55 | 58.07 | 63.74 | 68.93 | 76.00 | 78.65 | 73.20 | 63.65 | 55.43 | 47.61 | 61.90 | |||||||||||||
| 1972 | 48.29 | 55.28 | 59.94 | 59.07 | 68.77 | 74.03 | 81.94 | 81.45 | 74.97 | 67.29 | 57.37 | 49.10 | 64.79 | |||||||||||||
| 1973 | 51.35 | 58.43 | 54.97 | 64.30 | 70.45 | 74.70 | 78.84 | 76.13 | 76.17 | 67.00 | 53.17 | 55.23 | 65.06 | |||||||||||||
| 1974 | 50.19 | 52.71 | 57.65 | 59.93 | 65.48 | 71.47 | 78.29 | 79.84 | 82.07 | 71.97 | 59.60 | 52.90 | 65.18 | |||||||||||||
| 1975 | 53.84 | 52.89 | 54.65 | 56.03 | 68.57 | c | 72.70 | 76.61 | 75.42 | 78.60 | 64.35 | 56.20 | 53.90 | 63.65 | ||||||||||||
| 1976 | 55.00 | 54.14 | 56.00 | 59.00 | 68.90 | 70.60 | 77.32 | 74.81 | 76.17 | 70.94 | 62.97 | 55.06 | 65.08 | |||||||||||||
| 1977 | 55.87 | 61.29 | 54.81 | 64.70 | 62.26 | 73.23 | 77.68 | 80.61 | 71.40 | 67.68 | 56.63 | 55.52 | 65.14 | |||||||||||||
| 1978 | 55.77 | 56.61 | 63.10 | 60.03 | 66.06 | 74.03 | 77.16 | 78.32 | 71.50 | 71.06 | 56.80 | 49.94 | 65.03 | |||||||||||||
| 1979 | 51.00 | 51.32 | 61.29 | 60.87 | 67.94 | 74.80 | 78.65 | 77.97 | 79.33 | 69.65 | 58.43 | 56.74 | 65.67 | |||||||||||||
| 1980 | 51.55 | 59.52 | 56.29 | 62.07 | 65.39 | 67.23 | 76.77 | 75.90 | 76.30 | 71.74 | 60.20 | 56.65 | 64.97 | |||||||||||||
| 1981 | 59.55 | 58.29 | 59.87 | 62.40 | 66.48 | 72.60 | 77.77 | 79.58 | 77.10 | 66.03 | 58.73 | 53.77 | 66.02 | |||||||||||||
| 1982 | 49.48 | 54.89 | 55.77 | 59.33 | 69.13 | 70.57 | 73.77 | 78.10 | 75.43 | 68.00 | 56.93 | 52.06 | 63.62 | |||||||||||||
| 1983 | 54.90 | 57.25 | 58.19 | 60.37 | 68.61 | 70.93 | 73.23 | 77.71 | 74.80 | 68.90 | 57.23 | 51.00 | 64.43 | |||||||||||||
| 1984 | 55.65 | 56.24 | 61.42 | 59.33 | 67.74 | 70.97 | 80.29 | 80.03 | 78.77 | 64.32 | 56.27 | 49.97 | 65.08 | |||||||||||||
| 1985 | 54.81 | 54.68 | 54.81 | 64.97 | 67.77 | 75.03 | 83.13 | 78.71 | 72.53 | 67.13 | 51.13 | 53.32 | 64.84 | |||||||||||||
| 1986 | 56.84 | 57.11 | 62.74 | 61.43 | 68.26 | 76.73 | 78.03 | 81.94 | 71.83 | 69.97 | 59.93 | 55.32 | 66.68 | |||||||||||||
| 1987 | 53.32 | 56.89 | 59.55 | 68.77 | 70.19 | 76.07 | a | 74.94 | 83.13 | 78.60 | 75.94 | 59.60 | 49.16 | 67.18 | ||||||||||||
| 1988 | 52.35 | 59.90 | 61.35 | 63.97 | 64.94 | 70.17 | 80.94 | 80.29 | 79.40 | 71.97 | 56.43 | 52.42 | 66.18 | |||||||||||||
| 1989 | 52.39 | 49.96 | 56.52 | 69.73 | 66.39 | 73.57 | 74.16 | 76.48 | 80.13 | 68.97 | 60.53 | 54.03 | 65.24 | |||||||||||||
| 1990 | 52.81 | 53.00 | 61.32 | 65.77 | 67.35 | 69.43 | 80.06 | 79.19 | 78.40 | 68.13 | 57.40 | 46.10 | 64.91 | |||||||||||||
| 1991 | 52.61 | 63.43 | 55.77 | 59.63 | 62.74 | 69.03 | 80.52 | 79.35 | 84.27 | 75.90 | 60.17 | 53.16 | 66.38 | |||||||||||||
| 1992 | 55.94 | 62.38 | ----- | z | 68.43 | 76.42 | 76.17 | 78.39 | 83.97 | 80.27 | 73.00 | 58.63 | 49.35 | 69.36 | ||||||||||||
| 1993 | 50.29 | 56.25 | 62.77 | 61.43 | 68.74 | 71.37 | 76.77 | 80.23 | 80.47 | 73.84 | 57.67 | 52.42 | 66.02 | |||||||||||||
| 1994 | 56.87 | 54.64 | 65.13 | 64.07 | 68.90 | 70.63 | 79.90 | 80.74 | 78.77 | 70.13 | 52.83 | 53.10 | 66.31 | |||||||||||||
| 1995 | 54.65 | 62.96 | 59.03 | 61.63 | 67.84 | 71.20 | 78.55 | 80.65 | 79.50 | 70.16 | 62.23 | 56.29 | 67.06 | |||||||||||||
| 1996 | 52.39 | 59.97 | 63.16 | 65.00 | 66.81 | 74.93 | 83.26 | 84.74 | 79.00 | 71.19 | 60.80 | 53.55 | 67.90 | |||||||||||||
| 1997 | 58.26 | 58.64 | 60.65 | 65.57 | 75.06 | 73.60 | 81.84 | ----- | z | ----- | z | 65.84 | ----- | z | 52.42 | 65.76 | ||||||||||
| 1998 | 54.03 | 54.32 | 61.03 | 62.70 | 62.68 | ----- | z | 80.39 | 82.06 | 81.63 | 70.16 | ----- | z | 50.65 | 65.97 | |||||||||||
| 1999 | 53.23 | 52.29 | 55.87 | 62.13 | 64.74 | 72.93 | 77.81 | 77.71 | 83.10 | 75.10 | 61.73 | 54.23 | 65.91 | |||||||||||||
| 2000 | 52.68 | 56.48 | 58.10 | 68.07 | 68.67 | a | 77.53 | 79.77 | 81.77 | 80.33 | 70.23 | 56.80 | 54.58 | 67.08 | ||||||||||||
| 2001 | 56.58 | 56.75 | 61.74 | 59.63 | 73.71 | 72.67 | 79.65 | 80.42 | 79.93 | a | 72.29 | ----- | z | 51.71 | 67.73 | |||||||||||
| 2002 | 51.94 | 60.46 | ----- | z | 65.68 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.36 | |||
| 2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.97 | a | 80.55 | 79.84 | 83.50 | ----- | z | 57.07 | ----- | z | 75.18 | |||||
| 2004 | 54.93 | c | 57.81 | b | 66.19 | d | 65.54 | f | 68.44 | d | 72.40 | 79.87 | 81.32 | 74.80 | 67.19 | 59.00 | 55.39 | 67.03 | ||||||||
| 2005 | 54.29 | 62.18 | 65.52 | 62.60 | 69.39 | 69.53 | 79.42 | 80.39 | 75.50 | 67.87 | 58.67 | 53.29 | 66.55 | |||||||||||||
| 2006 | 54.77 | 60.18 | 55.03 | ----- | z | 70.35 | 74.40 | 78.03 | 76.39 | 77.60 | 69.52 | 57.10 | 55.27 | e | 66.24 | |||||||||||
| 2007 | 53.74 | 53.25 | 63.39 | 63.47 | 68.26 | 72.43 | 77.35 | 78.52 | 73.60 | 66.26 | 58.93 | 49.50 | e | 64.89 | ||||||||||||
| 2008 | 49.68 | 56.14 | 58.38 | b | 60.83 | ----- | z | ----- | z | ----- | z | 77.29 | ----- | z | ----- | z | ----- | z | ----- | z | 60.46 | |||||
| 2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 52.96 | 56.26 | 58.79 | 62.61 | 67.42 | 72.22 | 77.83 | 78.89 | 77.07 | 68.92 | 58.70 | 53.26 | 65.30 | |||||||||||||
| S.D. | 3.40 | 3.49 | 3.55 | 3.15 | 3.13 | 2.75 | 2.57 | 2.68 | 3.14 | 3.06 | 2.58 | 2.83 | 1.46 | |||||||||||||
| SKEW | -0.43 | 0.13 | 0.67 | 0.24 | 0.10 | -0.26 | -0.06 | 0.00 | -0.02 | 0.27 | -0.17 | -0.32 | -0.08 | |||||||||||||
| MAX | 59.55 | 63.43 | 69.45 | 70.23 | 76.42 | 78.80 | 83.58 | 84.87 | 84.27 | 75.94 | 64.21 | 59.27 | 68.41 | |||||||||||||
| MIN | 44.19 | 48.03 | 53.55 | 55.57 | 60.10 | 64.90 | 70.39 | 72.23 | 70.83 | 62.90 | 51.13 | 46.10 | 61.78 | |||||||||||||
| NO YRS | 73 | 73 | 70 | 71 | 72 | 71 | 74 | 74 | 73 | 74 | 70 | 73 | 61 | |||||||||||||