| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1950 | 40.00 | z | ----- | z | ----- | z | 57.80 | t | 65.23 | 71.14 | a | 80.58 | 83.13 | 75.30 | 61.20 | a | 54.70 | 53.32 | 68.07 | |||||||
| 1951 | 46.19 | 50.07 | 50.10 | 66.34 | a | 66.23 | 77.83 | 81.26 | 80.16 | 78.63 | 61.48 | 54.53 | 44.16 | 63.08 | ||||||||||||
| 1952 | 44.81 | 50.86 | 50.00 | 63.07 | 67.19 | 67.10 | 82.19 | 79.16 | 78.43 | 70.26 | 49.30 | 49.16 | 62.63 | |||||||||||||
| 1953 | 52.97 | 51.21 | 52.55 | 58.17 | a | 60.74 | 65.03 | 79.74 | 76.87 | 75.80 | 64.94 | 57.37 | 48.68 | 62.01 | ||||||||||||
| 1954 | 48.16 | 54.56 | a | 53.52 | 60.73 | 66.94 | 65.80 | 74.47 | a | 72.06 | 70.69 | a | 62.77 | 58.03 | 47.94 | 61.31 | ||||||||||
| 1955 | 45.19 | 47.29 | 49.23 | 51.80 | 63.58 | 71.10 | 72.26 | 78.74 | 72.83 | 62.42 | 50.77 | 49.03 | 59.52 | |||||||||||||
| 1956 | 48.45 | 43.41 | 52.52 | 60.50 | 66.84 | 68.33 | 79.87 | 77.19 | 75.76 | a | 61.29 | 52.17 | a | 47.81 | 61.18 | |||||||||||
| 1957 | 40.00 | 49.86 | 53.61 | 61.07 | 66.77 | 72.43 | 77.03 | a | 76.47 | a | 78.80 | 61.00 | 53.57 | 49.58 | 61.68 | |||||||||||
| 1958 | 49.94 | 56.36 | 54.29 | 58.23 | 72.81 | 71.10 | 83.84 | 84.77 | 74.37 | 68.58 | 53.57 | 53.74 | 65.13 | |||||||||||||
| 1959 | 50.00 | 49.14 | 55.06 | 62.33 | 61.90 | 71.23 | 82.03 | 80.00 | 69.43 | 63.94 | 55.20 | 47.61 | 62.32 | |||||||||||||
| 1960 | 45.29 | 50.86 | 56.52 | 59.77 | 61.87 | 75.13 | 83.39 | 76.90 | 74.47 | 64.57 | a | 53.57 | 46.06 | 62.37 | ||||||||||||
| 1961 | 51.74 | 53.93 | 53.26 | 59.90 | 63.45 | 75.90 | 80.52 | 83.06 | 70.10 | 62.87 | 51.20 | 47.23 | 62.76 | |||||||||||||
| 1962 | 46.00 | 50.89 | 51.52 | 62.63 | 58.87 | 72.17 | 79.39 | 76.52 | 75.10 | 61.42 | 54.30 | 49.10 | 61.49 | |||||||||||||
| 1963 | 42.19 | 57.79 | 53.94 | 53.67 | 65.87 | 68.50 | 72.42 | 77.45 | 76.87 | 63.16 | 53.20 | 48.94 | 61.17 | |||||||||||||
| 1964 | 47.71 | 51.10 | 51.39 | 55.80 | 62.19 | 67.70 | 76.68 | 75.61 | 71.77 | 65.55 | 48.33 | 46.58 | 60.03 | |||||||||||||
| 1965 | 45.48 | 51.93 | 58.06 | 60.17 | 62.77 | 70.20 | 80.29 | 78.13 | 73.17 | 66.97 | 55.77 | 45.74 | 62.39 | |||||||||||||
| 1966 | 46.10 | 49.21 | 54.23 | 63.33 | 67.71 | 72.80 | 76.48 | 79.87 | 76.07 | 64.35 | 52.33 | 50.23 | 62.73 | |||||||||||||
| 1967 | 48.55 | 52.93 | 52.65 | 54.73 | 67.06 | 73.93 | 82.39 | 87.87 | 81.50 | 63.87 | 54.93 | 45.90 | 63.86 | |||||||||||||
| 1968 | 48.52 | 57.48 | 58.06 | 58.40 | 64.97 | 72.33 | 79.77 | 75.16 | 72.50 | 62.35 | 53.79 | a | 46.13 | 62.46 | ||||||||||||
| 1969 | 41.77 | 47.39 | 58.45 | 58.93 | 68.87 | 70.93 | 75.97 | 77.61 | 74.53 | 61.48 | 52.63 | 49.42 | 61.50 | |||||||||||||
| 1970 | 47.87 | 55.43 | 55.68 | 54.87 | 65.81 | 75.50 | 82.16 | 81.52 | 71.20 | 63.00 | 53.43 | 47.06 | 62.79 | |||||||||||||
| 1971 | 46.03 | 50.25 | 50.58 | 57.37 | 65.39 | 67.70 | 78.94 | 81.94 | 72.27 | 60.16 | 50.87 | 44.74 | 60.52 | |||||||||||||
| 1972 | 45.19 | 52.38 | 57.29 | 56.13 | 67.81 | 71.67 | 83.19 | 82.65 | 72.40 | 62.84 | 53.67 | 44.23 | 62.45 | |||||||||||||
| 1973 | 45.94 | 54.43 | 52.23 | a | 60.87 | 69.29 | 72.70 | 82.10 | 78.58 | 74.70 | 63.55 | 49.20 | 50.55 | 62.84 | ||||||||||||
| 1974 | 45.23 | 48.57 | 54.61 | 58.07 | 63.13 | 72.90 | 78.29 | 81.74 | 83.00 | 68.48 | 54.80 | 49.16 | 63.17 | |||||||||||||
| 1975 | 49.16 | 49.32 | 50.97 | 53.50 | 64.67 | a | 70.53 | 78.58 | 74.74 | 78.50 | 61.58 | 51.50 | 48.71 | 60.98 | ||||||||||||
| 1976 | 49.23 | 51.28 | 52.61 | 56.30 | 66.74 | 68.47 | 78.81 | 74.68 | 74.97 | 66.74 | 54.83 | 46.13 | 61.73 | |||||||||||||
| 1977 | 49.45 | 55.71 | 52.06 | 62.40 | 60.19 | 73.37 | 78.23 | 84.77 | 69.90 | 63.32 | 52.43 | 49.48 | 62.61 | |||||||||||||
| 1978 | 48.48 | 53.00 | a | 59.26 | 57.00 | 62.77 | 72.97 | 77.58 | 77.52 | 68.87 | 66.87 | 49.63 | 43.13 | 61.42 | ||||||||||||
| 1979 | 38.26 | 48.15 | a | 58.30 | a | 57.59 | a | 67.19 | 75.17 | a | 81.90 | 77.35 | 76.30 | 66.97 | 50.47 | 51.19 | 62.40 | |||||||||
| 1980 | 45.48 | 53.17 | 53.32 | 62.00 | a | 63.23 | 65.83 | 78.19 | 77.90 | 74.53 | 68.45 | 55.93 | 51.61 | 62.47 | ||||||||||||
| 1981 | 48.35 | 52.86 | 56.58 | 59.17 | 63.90 | 70.53 | 78.30 | a | 83.84 | 77.00 | 62.42 | 55.23 | 48.87 | 63.09 | ||||||||||||
| 1982 | 43.39 | 50.96 | 54.55 | 57.77 | 67.00 | 72.83 | 76.48 | 79.84 | 72.63 | 64.00 | 51.03 | 46.45 | 61.41 | |||||||||||||
| 1983 | 51.74 | 53.68 | 56.03 | 59.67 | 67.48 | 68.27 | 72.00 | 77.23 | 71.73 | 64.35 | 54.07 | 42.68 | 61.58 | |||||||||||||
| 1984 | 49.23 | 52.76 | 57.58 | 55.93 | 64.52 | 68.47 | 80.03 | 80.00 | 74.77 | 59.52 | 51.07 | 43.61 | 61.46 | |||||||||||||
| 1985 | 42.32 | 48.14 | 52.19 | 63.13 | 67.58 | 76.20 | 87.58 | 81.16 | 69.93 | 63.81 | 43.73 | 42.39 | 61.51 | |||||||||||||
| 1986 | 50.94 | 51.15 | a | 61.13 | 59.17 | 66.81 | 77.07 | 76.35 | 87.03 | 70.10 | 66.42 | 53.17 | 45.45 | 63.73 | ||||||||||||
| 1987 | 46.90 | 53.43 | 57.06 | 67.83 | 69.77 | 77.83 | 75.10 | 81.65 | 76.40 | 73.06 | 52.43 | 43.45 | 64.58 | |||||||||||||
| 1988 | 45.29 | 53.11 | a | 56.39 | 60.20 | 63.77 | 70.90 | 81.06 | 81.13 | 76.93 | 67.32 | 50.83 | 45.52 | 62.70 | ||||||||||||
| 1989 | 46.00 | 42.68 | 52.87 | 66.47 | 65.23 | 74.17 | 74.94 | 75.42 | 78.07 | 62.97 | 53.43 | 45.23 | 61.45 | |||||||||||||
| 1990 | 46.77 | 47.71 | 58.68 | 63.63 | 64.42 | 70.53 | 83.13 | 80.74 | 77.30 | 63.26 | 53.17 | 39.39 | 62.39 | |||||||||||||
| 1991 | 46.52 | 57.96 | 52.26 | 56.70 | 61.29 | 68.57 | 82.77 | 83.23 | 81.77 | 68.55 | 54.00 | 45.90 | 63.29 | |||||||||||||
| 1992 | 50.32 | 57.38 | 61.90 | 64.77 | 74.81 | 78.23 | 81.29 | 85.39 | 76.60 | 66.00 | 52.53 | 45.32 | 66.21 | |||||||||||||
| 1993 | 43.35 | 47.61 | 58.45 | 59.03 | 69.74 | 71.00 | 74.10 | 79.52 | 80.40 | 70.23 | 48.80 | 46.26 | 62.37 | |||||||||||||
| 1994 | 52.39 | 51.75 | 61.94 | 63.23 | 70.26 | 72.57 | 84.90 | 82.32 | 80.50 | 64.42 | 49.50 | 49.35 | 65.26 | |||||||||||||
| 1995 | 50.94 | 57.25 | 57.94 | 60.20 | 69.00 | 73.50 | 82.58 | 80.06 | 79.17 | 62.70 | a | 57.30 | 49.06 | 64.97 | ||||||||||||
| 1996 | 47.65 | 53.68 | a | 59.53 | a | 64.60 | 64.61 | 74.27 | 85.84 | 85.19 | 74.34 | a | 63.29 | 56.03 | a | 49.73 | a | 64.90 | ||||||||
| 1997 | 48.63 | a | 52.57 | 58.29 | 60.93 | 74.74 | 71.90 | 80.14 | b | 83.94 | 76.03 | 61.97 | 56.20 | 46.13 | 64.29 | |||||||||||
| 1998 | 52.81 | 54.36 | 56.03 | 63.10 | 62.35 | 73.50 | 84.97 | 86.61 | 80.57 | 64.68 | 55.00 | 46.52 | 65.04 | |||||||||||||
| 1999 | 48.87 | 51.14 | 53.42 | 60.83 | 64.16 | 71.47 | 79.97 | 82.74 | 81.13 | 69.42 | 59.57 | 48.10 | 64.24 | |||||||||||||
| 2000 | 46.84 | 51.83 | 55.45 | 67.17 | 67.55 | 76.53 | 78.97 | 82.55 | 77.33 | 65.68 | 50.30 | 48.65 | 64.07 | |||||||||||||
| 2001 | 49.71 | 50.04 | 56.32 | 59.10 | 74.48 | 71.10 | 81.32 | 83.74 | 79.40 | 66.42 | 57.77 | 49.06 | 64.87 | |||||||||||||
| 2002 | 48.81 | 56.64 | 56.35 | 62.03 | 67.87 | 76.17 | 85.16 | l | 86.32 | 79.07 | 65.87 | 59.63 | 52.39 | 64.65 | ||||||||||||
| 2003 | 56.00 | 55.46 | 59.10 | 59.23 | 70.71 | 80.13 | 88.39 | 87.45 | 81.67 | 69.32 | 51.40 | 50.19 | 67.42 | |||||||||||||
| 2004 | 49.77 | 54.10 | 63.42 | 66.40 | 70.61 | 75.00 | 87.03 | 83.81 | 73.55 | a | 64.61 | 52.77 | 48.81 | 65.82 | ||||||||||||
| 2005 | 49.23 | 53.86 | 62.23 | 61.07 | 67.77 | ----- | z | 83.39 | 86.23 | 76.37 | 65.32 | 49.93 | 45.58 | 63.72 | ||||||||||||
| 2006 | 49.58 | 53.14 | 53.42 | 61.43 | 68.77 | 73.90 | 85.10 | 81.87 | 75.80 | 64.61 | 52.73 | 48.13 | 64.04 | |||||||||||||
| 2007 | 46.03 | a | 51.21 | 59.42 | 60.27 | 66.58 | 72.20 | 81.00 | 78.39 | 74.37 | 60.06 | 50.23 | 45.10 | 62.07 | ||||||||||||
| 2008 | 42.93 | a | 50.34 | 51.45 | 55.57 | 66.00 | 69.10 | 81.32 | 81.81 | 76.27 | 63.68 | 53.30 | 43.77 | 61.30 | ||||||||||||
| 2009 | 45.74 | 50.29 | 50.26 | 57.93 | 68.42 | 71.07 | 83.58 | 79.97 | 75.77 | 59.61 | 52.77 | 40.03 | 61.29 | |||||||||||||
| 2010 | 50.84 | 53.32 | 54.58 | 57.53 | 61.06 | 66.67 | 79.45 | 79.26 | 71.83 | 62.52 | 50.90 | 48.54 | c | 61.38 | ||||||||||||
| 2011 | 48.16 | 47.89 | 52.48 | 54.60 | 60.00 | g | 68.69 | d | 76.03 | 81.10 | 81.53 | 64.39 | 52.80 | 43.94 | 61.06 | |||||||||||
| 2012 | 48.48 | 49.79 | 50.81 | 58.63 | 64.58 | 67.70 | 75.58 | 81.94 | 77.23 | 64.13 | 54.33 | 46.00 | 61.60 | |||||||||||||
| 2013 | 43.10 | 48.25 | d | 55.94 | 64.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.09 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 47.41 | 51.81 | 55.24 | 59.89 | 66.19 | 71.90 | 80.02 | 80.66 | 75.69 | 64.46 | 53.05 | 47.17 | 62.73 | |||||||||||||
| S.D. | 3.24 | 3.24 | 3.42 | 3.53 | 3.45 | 3.35 | 3.71 | 3.56 | 3.51 | 2.85 | 2.81 | 2.90 | 1.59 | |||||||||||||
| SKEW | -0.25 | -0.27 | 0.38 | 0.14 | 0.42 | 0.14 | -0.09 | 0.02 | 0.04 | 0.65 | -0.18 | -0.23 | 0.73 | |||||||||||||
| MAX | 56.00 | 57.96 | 63.42 | 67.83 | 74.81 | 80.13 | 88.39 | 87.87 | 83.00 | 73.06 | 59.63 | 53.74 | 67.42 | |||||||||||||
| MIN | 38.26 | 42.68 | 49.23 | 51.80 | 58.87 | 65.03 | 72.00 | 72.06 | 68.87 | 59.52 | 43.73 | 39.39 | 59.52 | |||||||||||||
| NO YRS | 63 | 63 | 63 | 62 | 62 | 62 | 62 | 63 | 63 | 63 | 63 | 63 | 59 | |||||||||||||