| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1965 | ----- | z | 49.08 | c | 58.48 | 61.73 | 62.90 | 71.73 | 82.19 | 79.19 | 72.73 | 68.81 | 54.70 | 45.03 | 64.24 | |||||||||||
| 1966 | 44.81 | 48.57 | 52.94 | 61.90 | 69.13 | 71.80 | 76.10 | 78.84 | 74.73 | 62.94 | 53.27 | 47.10 | 61.84 | |||||||||||||
| 1967 | 47.03 | 51.57 | 49.71 | 55.97 | 67.35 | 75.80 | 82.35 | 88.29 | 80.27 | 62.81 | 54.83 | 42.42 | 63.20 | |||||||||||||
| 1968 | 44.45 | 56.52 | 57.55 | 57.13 | 64.68 | 71.20 | 79.81 | 73.87 | 71.63 | 60.77 | 51.33 | 40.06 | 60.75 | |||||||||||||
| 1969 | 31.95 | l | 44.96 | 57.74 | 59.13 | 70.74 | 74.57 | 76.81 | 76.29 | 73.07 | 60.74 | 54.63 | 45.06 | 63.07 | ||||||||||||
| 1970 | 43.77 | 55.11 | 54.42 | 54.30 | 66.87 | 76.97 | 80.10 | 81.94 | 69.83 | 61.94 | 51.90 | 42.35 | 61.62 | |||||||||||||
| 1971 | 43.97 | 49.39 | 48.65 | 57.70 | 67.16 | 66.73 | 80.42 | 83.29 | 71.03 | 60.84 | 49.53 | 42.61 | 60.11 | |||||||||||||
| 1972 | 42.16 | 47.07 | 55.42 | 54.63 | 69.77 | 71.47 | 82.55 | 83.71 | 70.33 | 64.39 | 53.40 | 39.84 | 61.23 | |||||||||||||
| 1973 | 42.90 | 52.43 | 53.16 | 60.70 | 69.29 | 71.03 | 81.16 | 76.00 | 73.67 | 61.23 | 45.60 | 47.39 | 61.21 | |||||||||||||
| 1974 | 40.52 | 46.14 | 52.23 | 56.57 | 61.90 | 74.43 | 76.35 | 79.55 | 81.30 | 68.81 | 53.57 | 47.48 | 61.57 | |||||||||||||
| 1975 | 45.45 | 45.75 | 50.74 | 54.83 | 66.68 | 70.60 | 78.90 | 73.45 | 80.20 | 58.58 | 48.93 | 47.29 | 60.12 | |||||||||||||
| 1976 | 48.19 | 47.93 | 51.55 | 58.40 | 68.06 | 70.00 | 77.35 | 74.55 | 74.83 | 66.29 | 56.83 | 48.81 | 61.90 | |||||||||||||
| 1977 | 45.03 | 53.07 | 49.90 | 64.60 | 60.94 | 75.97 | 78.29 | 85.06 | 68.10 | 63.26 | 48.83 | 45.03 | 61.51 | |||||||||||||
| 1978 | 43.90 | 49.36 | 57.94 | 58.13 | 62.77 | 74.07 | 78.19 | 75.84 | 67.00 | 67.48 | 48.23 | 41.94 | 60.40 | |||||||||||||
| 1979 | 35.90 | 44.07 | 57.74 | 57.27 | 66.84 | 74.62 | i | 78.68 | 76.23 | 76.10 | 64.42 | 50.20 | 47.52 | 59.54 | ||||||||||||
| 1980 | 40.10 | a | 46.90 | 50.71 | 62.10 | 63.35 | 65.00 | 77.32 | 74.87 | 72.70 | 65.61 | 52.67 | 49.68 | 60.08 | ||||||||||||
| 1981 | 49.81 | 50.96 | 57.61 | 57.87 | 64.58 | 66.87 | 72.29 | 79.84 | 71.27 | 57.06 | 52.40 | 43.55 | 60.34 | |||||||||||||
| 1982 | 42.58 | 48.71 | 54.55 | 57.07 | 67.94 | 74.93 | 76.52 | 79.03 | 72.97 | 63.42 | 50.17 | 45.32 | 61.10 | |||||||||||||
| 1983 | 49.29 | 50.86 | 56.74 | 62.30 | 70.32 | 68.00 | 72.42 | 77.29 | 70.93 | 64.68 | 51.30 | 37.90 | 61.00 | |||||||||||||
| 1984 | 46.94 | 51.83 | 57.55 | 55.97 | 63.61 | 68.03 | 79.26 | 80.65 | 71.43 | 58.16 | 49.77 | 41.65 | 60.40 | |||||||||||||
| 1985 | 43.23 | 45.93 | 53.13 | 61.17 | 66.13 | 74.33 | 86.68 | 78.84 | 68.53 | 61.52 | 41.47 | 39.42 | 60.03 | |||||||||||||
| 1986 | 48.58 | 49.43 | 61.26 | 58.83 | 66.23 | 76.27 | 73.00 | 86.23 | 68.67 | 67.87 | 52.83 | 45.29 | 62.87 | |||||||||||||
| 1987 | 44.77 | 51.96 | 54.87 | 65.00 | 69.71 | 76.80 | 76.19 | 82.26 | 78.63 | 73.00 | 55.13 | 41.58 | 64.16 | |||||||||||||
| 1988 | 43.23 | 52.24 | 55.74 | 60.33 | 65.03 | 72.27 | 79.52 | 80.29 | 76.40 | 68.06 | 50.70 | 47.29 | 62.59 | |||||||||||||
| 1989 | 46.55 | 40.86 | 50.90 | 65.40 | 67.29 | 74.80 | 74.03 | 74.03 | 80.20 | 62.42 | 53.17 | 47.71 | 61.45 | |||||||||||||
| 1990 | 48.10 | 46.39 | 58.77 | 63.80 | 64.26 | 72.00 | 83.35 | 81.58 | 77.73 | 60.65 | 53.43 | 39.10 | 62.43 | |||||||||||||
| 1991 | 45.00 | 56.36 | 52.23 | 57.00 | 59.94 | 67.00 | 81.19 | 80.90 | 80.00 | 67.10 | 51.80 | 45.97 | 62.04 | |||||||||||||
| 1992 | 49.48 | 55.90 | 64.00 | 63.90 | 75.35 | 79.17 | 80.87 | 83.29 | 72.57 | 64.42 | 51.00 | 41.65 | 65.13 | |||||||||||||
| 1993 | 39.58 | 46.29 | 55.39 | 58.17 | 70.65 | 69.87 | 68.84 | 78.55 | 80.50 | 69.48 | 47.13 | 46.94 | 60.95 | |||||||||||||
| 1994 | 49.16 | 45.96 | 60.10 | 60.18 | m | 70.58 | 71.07 | 82.65 | 81.52 | 78.27 | 62.58 | 45.60 | 45.13 | 62.96 | ||||||||||||
| 1995 | 46.87 | 54.25 | 57.00 | 60.17 | 70.32 | 71.43 | 80.65 | ----- | z | 75.60 | 63.00 | 55.97 | 44.97 | 61.84 | ||||||||||||
| 1996 | 44.55 | 46.86 | 56.71 | 60.93 | 62.90 | 73.07 | 85.16 | 83.61 | 71.83 | 62.35 | 50.73 | 44.10 | 61.90 | |||||||||||||
| 1997 | 44.00 | 51.00 | 53.81 | 59.37 | 73.39 | 71.20 | 78.71 | 82.74 | 76.87 | 61.13 | 56.10 | 45.48 | 62.82 | |||||||||||||
| 1998 | 45.94 | 51.75 | 56.19 | 61.40 | 62.13 | 72.27 | 80.45 | 82.16 | 79.80 | 64.00 | 51.90 | 43.52 | 62.63 | |||||||||||||
| 1999 | 48.45 | 47.11 | 52.39 | 60.40 | 63.84 | 68.07 | 76.81 | 78.19 | 78.17 | 66.06 | 55.03 | 49.06 | 61.97 | |||||||||||||
| 2000 | 43.71 | 49.83 | 52.45 | 63.93 | 64.58 | 75.30 | 76.84 | 78.42 | 73.17 | 63.68 | 48.77 | 45.00 | 61.31 | |||||||||||||
| 2001 | 46.35 | 49.36 | 55.32 | 57.70 | 70.61 | 70.43 | 76.94 | 79.84 | 75.30 | 61.77 | 52.80 | 45.39 | 61.82 | |||||||||||||
| 2002 | 43.77 | 50.86 | 50.29 | 59.70 | 64.16 | 74.73 | 81.61 | 80.42 | 76.07 | 62.45 | 54.17 | 45.90 | 62.01 | |||||||||||||
| 2003 | 49.23 | 51.14 | 52.97 | 57.77 | 66.13 | 77.53 | 84.84 | 83.00 | 77.13 | 64.65 | 48.37 | 45.16 | 63.16 | |||||||||||||
| 2004 | 40.97 | 49.52 | 59.68 | 65.13 | 65.81 | 74.40 | 83.61 | 80.65 | 70.40 | 63.35 | 52.60 | 46.77 | 62.74 | |||||||||||||
| 2005 | 46.45 | 53.79 | 59.58 | 59.20 | 68.65 | 68.77 | 81.87 | 82.90 | 73.20 | 62.16 | 49.47 | 43.13 | 62.43 | |||||||||||||
| 2006 | 47.74 | 47.93 | 51.61 | 62.57 | ----- | z | 75.37 | 83.29 | 80.94 | 76.57 | 62.42 | 49.50 | 44.26 | 62.02 | ||||||||||||
| 2007 | 44.16 | 49.32 | 56.77 | 59.57 | 69.48 | 72.47 | 82.16 | 79.32 | 72.23 | 59.03 | 52.43 | 43.94 | 61.74 | |||||||||||||
| 2008 | 41.32 | 50.34 | 50.32 | 55.67 | 66.00 | 70.07 | 81.19 | 80.29 | 75.73 | 62.48 | 54.17 | 43.35 | 60.91 | |||||||||||||
| 2009 | 45.16 | 49.50 | 50.03 | 60.50 | 70.45 | 74.23 | 85.90 | ----- | z | 73.00 | ----- | z | 51.33 | ----- | z | 62.24 | ||||||||||
| 2010 | 48.94 | 53.89 | 57.17 | b | 57.83 | 61.45 | 66.10 | 77.23 | 77.35 | 69.53 | 62.13 | 47.30 | 44.03 | 60.25 | ||||||||||||
| 2011 | 44.52 | 44.18 | 46.87 | 52.73 | 59.29 | 67.25 | b | 73.48 | 78.06 | 76.00 | 59.33 | a | 49.38 | a | 44.16 | 57.94 | ||||||||||
| 2012 | 43.83 | a | 46.59 | 47.81 | 58.83 | 65.35 | 67.10 | 75.93 | a | 81.74 | 77.79 | a | 62.94 | 51.67 | 44.57 | a | 60.35 | |||||||||
| 2013 | 40.42 | 49.43 | 54.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.27 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 44.91 | 49.56 | 54.56 | 59.47 | 66.48 | 71.97 | 79.17 | 79.89 | 74.46 | 63.45 | 51.38 | 44.49 | 61.56 | |||||||||||||
| S.D. | 3.04 | 3.40 | 3.75 | 3.09 | 3.54 | 3.45 | 3.82 | 3.32 | 3.77 | 3.19 | 3.06 | 2.70 | 1.28 | |||||||||||||
| SKEW | -0.47 | 0.02 | 0.10 | 0.12 | 0.13 | -0.11 | -0.35 | 0.04 | 0.04 | 0.64 | -0.73 | -0.39 | 0.11 | |||||||||||||
| MAX | 49.81 | 56.52 | 64.00 | 65.40 | 75.35 | 79.17 | 86.68 | 88.29 | 81.30 | 73.00 | 56.83 | 49.68 | 65.13 | |||||||||||||
| MIN | 35.90 | 40.86 | 46.87 | 52.73 | 59.29 | 65.00 | 68.84 | 73.45 | 67.00 | 57.06 | 41.47 | 37.90 | 57.94 | |||||||||||||
| NO YRS | 47 | 49 | 49 | 47 | 47 | 47 | 48 | 46 | 48 | 47 | 48 | 47 | 41 | |||||||||||||