| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.20 | j | 92.00 | 86.48 | 81.10 | 70.65 | 58.93 | 43.52 | 72.11 | |||||||
| 1955 | 28.74 | 37.96 | 54.81 | 60.13 | 69.06 | 82.80 | 88.74 | 89.97 | 81.90 | 71.77 | 54.57 | 46.42 | 63.91 | |||||||||||||
| 1956 | 48.35 | 45.41 | 59.29 | 63.27 | 73.29 | 87.10 | 89.71 | 87.81 | 83.47 | 64.81 | 57.20 | 50.55 | 67.52 | |||||||||||||
| 1957 | 38.42 | 53.75 | 56.00 | 62.63 | 67.48 | 85.67 | 90.23 | 88.32 | 81.80 | 62.84 | 47.43 | 47.16 | 65.14 | |||||||||||||
| 1958 | 46.90 | 51.57 | 48.48 | 61.03 | 78.19 | 83.23 | 90.26 | 92.03 | 82.63 | 72.74 | 56.77 | 55.03 | 68.24 | |||||||||||||
| 1959 | 47.29 | 44.36 | 60.06 | 70.90 | 70.10 | 87.97 | 95.48 | 89.29 | 77.27 | 72.35 | 62.50 | 48.84 | 68.87 | |||||||||||||
| 1960 | 39.42 | 45.97 | 63.94 | 66.97 | 74.81 | 90.07 | 93.48 | 90.68 | 84.43 | 66.48 | 50.97 | 47.23 | 67.87 | |||||||||||||
| 1961 | 50.00 | 50.04 | 54.94 | 65.83 | 71.97 | 88.87 | 92.00 | 86.10 | 75.97 | 65.97 | 50.07 | 43.61 | 66.28 | |||||||||||||
| 1962 | 40.84 | 43.61 | 48.87 | 70.33 | 67.77 | 82.33 | 89.00 | a | 89.77 | 82.57 | 70.97 | 57.33 | 51.48 | 66.24 | ||||||||||||
| 1963 | 45.42 | 57.25 | 52.23 | 57.97 | 74.71 | 75.13 | 91.16 | 88.35 | 81.10 | 70.81 | 53.93 | 49.81 | 66.49 | |||||||||||||
| 1964 | 42.84 | 47.76 | 51.16 | 61.73 | 69.68 | 80.00 | 91.97 | 88.06 | 80.13 | 74.77 | 47.43 | 44.71 | 65.02 | |||||||||||||
| 1965 | 47.13 | 51.39 | 54.42 | 59.57 | 67.52 | 79.13 | 87.71 | 86.06 | 74.50 | 75.06 | 53.97 | 41.71 | 64.85 | |||||||||||||
| 1966 | 41.23 | 43.82 | 59.32 | 68.07 | 78.35 | 83.77 | 90.77 | 91.52 | 81.10 | 69.10 | 55.33 | 43.55 | 67.16 | |||||||||||||
| 1967 | 45.39 | 51.86 | 55.87 | 50.10 | 72.00 | 77.70 | 91.71 | 91.87 | 78.43 | 71.90 | 57.80 | 36.71 | 65.11 | |||||||||||||
| 1968 | 44.00 | 49.97 | 58.32 | 60.73 | 73.52 | 84.17 | 90.97 | 82.23 | 79.70 | 68.55 | 53.90 | 39.74 | 65.48 | |||||||||||||
| 1969 | 44.74 | 41.21 | 51.29 | 64.30 | 79.29 | 78.23 | 90.61 | 92.81 | 83.77 | 62.19 | 56.53 | 47.68 | 66.06 | |||||||||||||
| 1970 | 45.58 | 53.43 | 53.84 | 57.50 | 75.42 | 82.43 | 91.13 | 91.13 | 78.47 | 66.03 | 54.43 | 40.29 | 65.81 | |||||||||||||
| 1971 | 47.39 | 50.14 | 56.87 | 61.77 | 65.55 | 84.30 | 93.52 | 92.00 | 78.53 | 62.97 | 51.27 | 37.52 | 65.15 | |||||||||||||
| 1972 | 41.94 | 54.24 | 65.55 | 64.53 | 76.23 | 83.83 | 94.06 | 88.19 | 76.17 | 60.55 | 47.10 | 39.19 | 65.97 | |||||||||||||
| 1973 | 38.84 | 44.07 | 46.77 | 60.17 | 76.23 | 84.10 | 91.58 | 87.42 | 79.07 | 67.19 | 49.67 | 45.65 | 64.23 | |||||||||||||
| 1974 | 36.81 | 48.50 | 55.32 | 59.13 | 76.06 | 87.60 | 88.52 | 86.58 | 84.27 | 65.52 | 52.63 | 41.03 | 65.16 | |||||||||||||
| 1975 | 43.74 | 46.11 | 48.13 | 51.33 | 70.16 | 80.67 | 89.87 | 85.45 | 81.40 | 63.45 | 51.60 | 47.77 | 63.31 | |||||||||||||
| 1976 | 50.19 | 47.48 | 51.00 | 58.37 | 74.48 | 80.97 | 88.26 | 82.29 | 75.57 | 67.39 | 59.67 | 49.71 | 65.45 | |||||||||||||
| 1977 | 43.13 | 56.07 | 50.03 | 68.17 | 63.52 | 86.00 | 90.97 | 88.19 | 79.27 | 72.29 | 58.30 | 50.39 | 67.19 | |||||||||||||
| 1978 | 44.23 | 47.68 | 57.45 | 59.57 | 72.39 | 84.27 | 92.10 | 89.35 | 75.70 | 74.10 | 50.07 | 40.06 | 65.58 | |||||||||||||
| 1979 | 35.71 | 46.07 | 55.52 | 64.63 | 75.58 | 85.93 | 90.90 | 85.68 | 86.07 | 70.90 | 53.30 | 50.42 | 66.73 | |||||||||||||
| 1980 | 46.74 | 53.38 | 52.00 | 66.83 | 69.42 | 84.47 | 93.52 | 89.39 | 81.07 | 70.77 | 58.40 | 54.26 | 68.35 | |||||||||||||
| 1981 | 51.16 | 50.36 | 53.35 | 69.73 | 71.61 | 88.93 | 93.74 | 92.29 | 82.97 | 63.16 | 56.37 | 48.10 | 68.48 | |||||||||||||
| 1982 | 43.16 | 51.89 | 51.42 | 61.63 | 73.71 | 80.23 | 89.03 | 88.32 | 75.07 | 63.58 | 48.50 | 43.32 | 64.16 | |||||||||||||
| 1983 | 46.35 | 48.68 | 51.03 | 55.53 | 71.61 | 82.87 | 87.26 | 83.94 | 81.60 | 68.61 | 50.67 | 44.45 | 64.38 | |||||||||||||
| 1984 | 48.84 | 51.86 | 57.42 | 62.00 | 80.00 | 82.03 | 89.87 | 85.81 | 81.27 | 60.42 | 51.20 | 37.29 | 65.67 | |||||||||||||
| 1985 | 38.55 | 46.57 | 51.94 | 70.73 | 75.74 | 89.33 | 92.19 | 89.03 | 74.47 | 67.13 | 44.13 | 46.65 | 65.54 | |||||||||||||
| 1986 | 52.68 | 53.21 | 60.97 | 63.83 | 76.74 | 89.43 | 88.35 | 91.32 | 72.77 | 65.97 | 55.03 | 46.61 | 68.08 | |||||||||||||
| 1987 | 36.16 | 48.36 | 52.39 | 70.57 | 72.87 | 86.20 | 86.97 | 90.58 | 83.67 | 71.97 | 51.97 | 38.16 | 65.82 | |||||||||||||
| 1988 | 39.19 | 53.55 | 58.19 | 64.17 | 72.68 | 84.73 | 95.00 | 89.42 | 80.60 | 76.74 | 53.67 | 43.84 | 67.65 | |||||||||||||
| 1989 | 41.42 | 45.32 | 61.87 | 72.90 | 73.35 | 83.80 | 94.58 | 87.48 | 80.30 | ----- | z | 60.00 | 51.97 | 68.45 | ||||||||||||
| 1990 | 44.90 | 47.25 | 60.35 | 68.03 | 72.19 | 86.03 | 93.39 | 88.10 | 81.83 | 71.32 | 55.40 | 40.35 | 67.43 | |||||||||||||
| 1991 | 44.26 | 58.21 | 48.84 | 60.73 | 66.94 | 82.90 | 92.42 | 89.45 | 82.03 | 72.06 | 55.47 | 46.87 | 66.68 | |||||||||||||
| 1992 | 42.77 | 50.14 | 56.19 | 72.60 | 80.65 | 83.23 | 89.16 | 91.00 | 83.23 | 71.61 | 52.37 | 39.52 | 67.71 | |||||||||||||
| 1993 | 38.94 | 44.32 | 60.65 | 65.77 | 76.39 | 81.10 | 90.23 | 89.26 | 82.90 | 68.77 | 50.43 | 44.74 | 66.12 | |||||||||||||
| 1994 | 49.39 | 46.54 | 61.97 | 64.53 | 74.32 | 90.20 | 95.10 | 93.58 | 80.93 | 66.00 | 43.97 | 44.42 | 67.58 | |||||||||||||
| 1995 | 41.52 | 59.46 | 53.68 | 61.87 | 67.23 | 79.20 | 90.45 | 91.10 | 84.53 | 72.16 | 63.30 | 48.84 | 67.78 | |||||||||||||
| 1996 | 48.10 | 53.83 | 58.87 | 67.47 | 76.19 | 88.37 | 95.90 | 93.10 | 80.27 | 66.13 | 53.53 | 43.45 | 68.77 | |||||||||||||
| 1997 | 41.74 | 49.14 | 64.06 | 63.33 | 80.45 | 82.50 | 88.58 | 90.13 | 79.67 | 67.42 | 54.27 | 41.16 | 66.87 | |||||||||||||
| 1998 | 46.29 | 41.75 | 55.58 | 58.93 | 64.19 | 77.10 | 91.39 | 92.19 | 77.73 | 63.35 | 52.70 | 47.23 | 64.04 | |||||||||||||
| 1999 | 47.52 | 48.14 | 57.45 | 57.13 | 73.39 | 83.53 | 88.97 | 86.71 | 81.80 | 74.35 | 60.73 | 49.52 | 67.44 | |||||||||||||
| 2000 | 49.52 | 49.38 | 57.03 | 69.83 | 78.77 | 87.80 | 91.16 | 88.90 | 80.47 | 65.81 | 50.17 | 50.23 | 68.26 | |||||||||||||
| 2001 | 40.26 | 39.86 | 57.48 | 60.00 | 80.74 | 87.43 | 88.61 | 92.84 | 84.03 | 72.71 | 54.42 | d | 44.35 | 66.90 | ||||||||||||
| 2002 | 46.06 | 55.46 | 57.32 | 69.23 | 76.39 | 88.13 | 95.10 | 90.19 | 81.30 | 67.06 | 55.53 | 44.52 | 68.86 | |||||||||||||
| 2003 | 55.42 | 46.43 | 58.65 | 58.57 | 74.87 | 87.20 | 94.87 | 89.29 | 84.07 | 75.35 | 46.93 | 41.81 | 67.79 | |||||||||||||
| 2004 | 45.42 | 43.55 | 65.55 | 65.17 | 75.52 | 86.47 | 92.16 | 88.16 | 79.20 | 63.06 | 50.83 | 45.32 | 66.70 | |||||||||||||
| 2005 | 43.19 | 47.29 | 56.06 | 61.77 | 73.84 | 80.87 | 95.10 | 88.87 | 77.37 | 68.03 | 58.07 | 46.58 | 66.42 | |||||||||||||
| 2006 | 45.77 | 53.07 | 48.16 | 62.33 | 77.06 | 88.50 | 94.23 | 88.61 | 79.63 | 65.35 | 55.63 | 43.10 | 66.79 | |||||||||||||
| 2007 | 43.74 | 50.54 | 62.52 | 65.70 | 77.06 | 87.77 | 94.84 | 91.32 | 79.11 | b | 65.94 | 58.23 | 40.26 | 68.09 | ||||||||||||
| 2008 | 39.39 | 48.41 | 57.10 | 63.90 | 70.81 | 85.33 | 93.26 | 92.35 | 82.37 | 69.42 | 58.40 | 40.58 | 66.78 | |||||||||||||
| 2009 | 49.77 | 47.04 | 55.77 | 63.47 | 79.68 | 77.37 | 93.29 | 87.97 | 84.93 | 64.52 | 56.90 | 38.59 | d | 66.61 | ||||||||||||
| 2010 | 42.55 | 46.68 | 52.58 | 59.73 | 66.45 | 84.60 | 93.19 | 88.71 | 84.33 | 66.45 | 50.53 | 46.16 | 65.16 | |||||||||||||
| 2011 | 45.97 | 47.64 | c | 54.90 | 62.03 | 68.45 | 82.07 | 90.29 | 92.13 | 83.47 | 69.84 | 50.13 | 47.03 | a | 66.16 | |||||||||||
| 2012 | 51.19 | 49.28 | 58.45 | 66.70 | 77.55 | 86.87 | 90.81 | 91.32 | 83.63 | 70.39 | 57.83 | 42.48 | 68.88 | |||||||||||||
| 2013 | 42.97 | 48.68 | 61.94 | 57.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.00 | z | 51.19 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 44.22 | 48.90 | 55.95 | 63.37 | 73.45 | 84.19 | 91.52 | 89.16 | 80.63 | 68.39 | 53.87 | 44.94 | 66.50 | |||||||||||||
| S.D. | 4.70 | 4.42 | 4.59 | 4.84 | 4.33 | 3.60 | 2.33 | 2.55 | 3.02 | 4.00 | 4.27 | 4.35 | 1.42 | |||||||||||||
| SKEW | -0.42 | 0.07 | 0.07 | -0.22 | -0.35 | -0.38 | 0.03 | -0.60 | -0.60 | 0.01 | -0.14 | 0.11 | -0.14 | |||||||||||||
| MAX | 55.42 | 59.46 | 65.55 | 72.90 | 80.74 | 90.20 | 95.90 | 93.58 | 86.07 | 76.74 | 63.30 | 55.03 | 68.88 | |||||||||||||
| MIN | 28.74 | 37.96 | 46.77 | 50.10 | 63.52 | 75.13 | 86.97 | 82.23 | 72.77 | 60.42 | 43.97 | 36.71 | 63.31 | |||||||||||||
| NO YRS | 59 | 59 | 59 | 58 | 58 | 58 | 59 | 59 | 59 | 58 | 59 | 59 | 57 | |||||||||||||