| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.85 | r | 9999.00 | |
| 1962 | 38.32 | 40.82 | 45.42 | 63.93 | 60.77 | 74.90 | 83.39 | 80.23 | 79.07 | 62.94 | 50.17 | 44.10 | 60.34 | |||||||||||||
| 1963 | 40.35 | 52.11 | 49.35 | 51.13 | 66.87 | 71.47 | 79.00 | 82.42 | 74.62 | i | 62.59 | d | 48.40 | 42.10 | 58.71 | |||||||||||
| 1964 | 38.77 | 44.86 | 45.94 | 55.90 | 64.97 | 71.63 | ----- | z | 81.23 | 74.53 | 68.74 | 45.83 | 37.71 | 57.28 | ||||||||||||
| 1965 | 39.65 | 46.82 | 51.68 | 58.27 | 63.74 | 73.17 | 83.23 | 79.03 | 69.50 | 70.32 | 49.27 | 38.52 | 60.27 | |||||||||||||
| 1966 | 39.26 | 41.86 | 52.45 | 62.17 | 72.42 | 71.10 | 80.74 | 83.71 | 76.93 | 65.00 | 48.80 | 39.87 | 61.19 | |||||||||||||
| 1967 | 41.00 | 48.29 | 46.19 | 48.00 | 66.48 | 75.83 | 88.48 | 90.55 | 81.17 | 63.58 | 51.10 | 38.90 | 61.63 | |||||||||||||
| 1968 | 39.45 | 49.69 | 54.90 | 56.73 | 65.81 | 77.27 | 89.23 | 77.00 | 75.80 | 63.32 | 45.97 | 38.32 | 61.12 | |||||||||||||
| 1969 | 35.68 | 38.57 | 48.84 | 57.57 | 70.23 | 74.33 | 83.74 | 85.00 | 77.27 | 57.00 | 54.47 | 42.29 | 60.41 | |||||||||||||
| 1970 | 40.32 | 49.36 | 48.74 | 50.57 | 68.00 | 77.27 | 87.19 | 87.48 | 70.47 | 60.90 | 46.47 | 36.26 | 60.25 | |||||||||||||
| 1971 | 40.65 | 44.14 | 44.61 | 55.77 | 65.61 | 70.97 | 85.90 | 89.55 | 71.73 | 59.77 | 47.83 | 35.13 | 59.31 | |||||||||||||
| 1972 | 35.87 | 44.17 | 54.19 | 54.13 | 68.52 | 77.63 | 85.16 | 85.23 | 70.63 | 61.48 | 44.77 | 32.61 | 59.53 | |||||||||||||
| 1973 | 36.29 | 44.50 | 47.61 | 58.07 | 70.58 | 76.80 | 87.52 | 83.03 | 74.23 | 62.10 | 42.33 | 40.74 | 60.32 | |||||||||||||
| 1974 | 35.32 | 43.46 | 47.58 | 55.27 | 62.77 | 82.60 | 82.94 | 83.03 | 81.03 | 65.13 | 49.97 | 39.65 | 60.73 | |||||||||||||
| 1975 | 38.81 | 40.75 | 44.23 | 49.23 | 66.06 | 71.90 | 85.06 | 78.74 | 79.83 | 58.00 | 46.43 | 42.94 | 58.50 | |||||||||||||
| 1976 | 40.00 | 42.45 | 46.71 | 54.77 | 69.81 | 70.87 | 84.42 | 73.81 | 76.63 | 66.77 | 56.83 | 45.16 | 60.69 | |||||||||||||
| 1977 | 36.87 | 50.21 | 47.61 | 65.20 | 56.81 | 79.70 | 82.26 | 84.42 | 70.10 | 63.87 | 46.40 | 40.74 | 60.35 | |||||||||||||
| 1978 | 40.58 | 44.21 | 56.03 | 53.00 | 60.94 | 73.23 | 82.61 | 80.06 | 69.17 | 69.77 | 44.63 | 34.68 | 59.08 | |||||||||||||
| 1979 | 30.00 | 40.04 | 52.29 | 55.27 | 67.48 | 76.33 | 85.81 | 80.45 | 80.13 | 64.77 | 44.83 | 43.39 | 60.07 | |||||||||||||
| 1980 | 38.26 | 45.66 | 47.58 | 59.93 | 64.74 | 68.10 | 83.58 | 79.00 | 75.60 | 64.71 | 48.97 | 45.97 | 60.17 | |||||||||||||
| 1981 | 42.90 | 45.11 | 51.87 | 58.53 | 64.10 | 72.60 | 83.10 | 88.19 | 76.03 | 59.52 | 49.00 | 41.16 | 61.01 | |||||||||||||
| 1982 | 35.39 | 40.93 | 46.65 | 54.13 | 64.61 | 73.33 | 80.26 | 82.90 | 69.47 | 59.32 | 42.17 | 36.74 | 57.16 | |||||||||||||
| 1983 | 42.10 | 43.75 | 47.77 | 52.60 | 67.06 | 72.30 | 78.29 | 83.13 | 72.83 | 64.71 | 44.43 | 32.16 | 58.43 | |||||||||||||
| 1984 | 36.77 | 41.03 | 50.61 | 52.37 | 64.94 | 70.10 | 86.71 | 84.81 | 71.53 | 54.10 | 43.00 | 34.94 | 57.58 | |||||||||||||
| 1985 | 33.35 | 40.64 | 47.55 | 63.43 | 67.32 | 78.53 | 89.39 | 80.71 | 64.90 | 60.81 | 36.40 | 34.52 | 58.13 | |||||||||||||
| 1986 | 41.84 | 45.18 | 56.84 | 57.67 | 67.48 | 81.63 | 79.42 | 88.55 | 65.53 | 65.42 | 47.40 | 39.81 | 61.40 | |||||||||||||
| 1987 | 38.35 | 44.93 | 50.87 | 68.14 | a | 69.48 | 79.53 | 78.00 | 83.13 | 81.77 | 73.06 | 47.43 | 38.26 | 62.75 | ||||||||||||
| 1988 | 37.74 | 51.21 | 53.77 | 61.07 | 67.16 | 76.43 | 86.77 | 86.10 | 78.37 | 75.45 | 43.63 | 39.29 | 63.08 | |||||||||||||
| 1989 | 38.16 | 35.14 | 49.06 | 62.57 | 64.13 | 77.63 | 84.97 | 80.03 | 76.87 | 62.06 | 51.13 | 46.48 | 60.69 | |||||||||||||
| 1990 | 42.74 | 43.43 | 54.13 | 66.90 | 64.52 | 75.53 | 87.77 | 83.52 | 82.33 | 62.77 | 49.53 | 33.03 | 62.18 | |||||||||||||
| 1991 | 43.58 | 53.18 | 47.52 | 54.20 | 60.87 | 69.43 | 86.26 | 86.16 | 81.77 | 65.13 | 46.53 | 41.74 | 61.36 | |||||||||||||
| 1992 | 41.10 | 51.24 | 58.00 | 62.53 | 76.26 | 80.83 | 81.13 | 85.94 | 76.97 | 65.55 | 44.13 | 34.90 | 63.21 | |||||||||||||
| 1993 | 31.19 | 35.04 | 49.65 | 54.97 | 70.29 | 71.57 | 74.00 | 80.19 | 78.93 | 65.58 | 46.23 | 40.65 | 58.19 | |||||||||||||
| 1994 | 46.26 | 43.64 | 58.55 | 61.90 | 69.87 | 76.83 | 90.10 | 87.81 | 80.30 | 62.32 | 38.60 | 37.68 | 62.82 | |||||||||||||
| 1995 | 41.48 | 53.54 | 49.84 | 56.37 | 65.00 | 72.23 | 84.19 | 83.65 | 79.70 | 63.77 | 52.60 | 39.55 | 61.83 | |||||||||||||
| 1996 | 40.23 | 44.52 | 53.58 | 59.80 | 62.29 | 76.60 | 89.26 | 87.68 | 74.33 | 63.19 | 50.27 | 41.00 | 61.90 | |||||||||||||
| 1997 | 40.77 | 44.00 | 53.97 | 56.93 | 72.90 | 73.23 | 84.32 | 86.06 | 77.73 | 62.06 | 50.50 | 39.71 | 61.85 | |||||||||||||
| 1998 | 42.90 | 42.93 | 51.87 | 57.90 | 59.52 | 73.07 | 88.90 | 89.32 | 81.40 | 64.00 | 46.07 | 38.58 | 61.37 | |||||||||||||
| 1999 | 43.77 | 40.64 | 48.06 | 55.57 | 64.32 | 74.43 | 86.29 | 85.19 | 78.87 | 70.90 | 55.93 | 44.48 | 62.37 | |||||||||||||
| 2000 | 39.81 | 45.41 | 51.84 | 64.83 | 67.52 | 80.33 | 85.19 | 87.03 | 75.93 | 62.87 | 41.57 | 41.23 | 61.96 | |||||||||||||
| 2001 | 39.42 | 42.96 | 53.97 | 55.50 | 75.39 | 76.03 | 84.81 | 90.16 | 80.77 | 66.23 | 50.40 | 37.16 | 62.73 | |||||||||||||
| 2002 | 39.42 | 46.14 | 49.94 | 61.03 | 66.81 | 79.00 | 91.58 | 83.16 | 79.07 | 63.19 | 53.60 | 42.74 | 62.97 | |||||||||||||
| 2003 | 46.26 | 45.68 | 54.06 | 53.10 | 67.45 | 81.10 | 92.45 | 87.81 | 81.60 | 69.32 | 44.47 | 40.77 | 63.67 | |||||||||||||
| 2004 | 38.77 | 41.21 | 57.74 | 62.03 | 64.74 | 77.23 | 87.84 | 84.45 | 74.50 | 62.42 | 48.83 | 44.00 | 61.98 | |||||||||||||
| 2005 | 38.61 | 46.07 | 55.26 | 56.47 | 65.94 | 72.70 | 90.10 | 88.71 | 76.50 | 66.29 | 44.17 | 36.61 | 61.45 | |||||||||||||
| 2006 | 41.58 | 44.89 | 45.68 | 58.83 | 70.97 | 79.00 | 91.23 | 85.19 | 79.57 | 64.84 | 48.13 | 40.90 | 62.57 | |||||||||||||
| 2007 | 40.97 | 45.50 | 59.06 | 61.57 | 72.90 | 79.67 | 93.06 | 87.45 | 77.03 | 62.26 | 52.40 | 37.19 | 64.09 | |||||||||||||
| 2008 | 36.58 | 44.97 | 49.68 | 55.93 | 68.42 | 75.93 | ----- | z | 88.39 | 80.87 | 66.16 | 53.07 | 39.00 | 59.91 | ||||||||||||
| 2009 | 44.00 | 45.07 | 48.61 | 58.73 | 71.65 | 74.77 | 90.42 | 87.48 | 84.33 | 58.16 | 47.90 | 37.52 | 62.39 | |||||||||||||
| 2010 | 42.74 | 45.82 | 54.39 | 56.50 | 60.84 | 74.20 | 87.13 | 85.03 | 78.40 | 66.23 | 46.80 | 40.13 | 61.52 | |||||||||||||
| 2011 | 40.90 | 42.68 | 47.47 | a | 52.66 | a | 61.55 | 73.79 | a | 83.63 | a | 88.55 | 85.31 | a | 64.90 | 48.20 | 46.11 | c | 61.31 | |||||||
| 2012 | 45.53 | a | 46.76 | 51.39 | 61.70 | 69.52 | 77.54 | d | 90.03 | 91.03 | ----- | z | 66.90 | ----- | z | 39.39 | 63.98 | |||||||||
| 2013 | 37.26 | 45.07 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.16 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 39.58 | 44.62 | 50.81 | 57.67 | 66.64 | 75.34 | 85.45 | 84.54 | 76.68 | 64.12 | 47.56 | 39.54 | 61.02 | |||||||||||||
| S.D. | 3.35 | 3.90 | 3.87 | 4.51 | 4.02 | 3.46 | 4.07 | 3.79 | 4.67 | 3.91 | 4.07 | 3.50 | 1.62 | |||||||||||||
| SKEW | -0.46 | 0.12 | 0.36 | 0.19 | 0.09 | 0.11 | -0.40 | -0.48 | -0.62 | 0.33 | -0.14 | -0.05 | -0.48 | |||||||||||||
| MAX | 46.26 | 53.54 | 59.06 | 68.14 | 76.26 | 82.60 | 93.06 | 91.03 | 85.31 | 75.45 | 56.83 | 46.48 | 64.09 | |||||||||||||
| MIN | 30.00 | 35.04 | 44.23 | 48.00 | 56.81 | 68.10 | 74.00 | 73.81 | 64.90 | 54.10 | 36.40 | 32.16 | 57.16 | |||||||||||||
| NO YRS | 52 | 52 | 51 | 51 | 51 | 51 | 49 | 51 | 49 | 51 | 50 | 51 | 47 | |||||||||||||