| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1959 | 45.70 | u | 43.39 | 49.71 | 58.83 | 61.84 | 67.93 | a | 81.23 | 76.77 | 65.60 | 61.30 | a | 51.57 | 44.87 | 60.28 | ||||||||||
| 1960 | 39.26 | 46.55 | 50.48 | 55.13 | 60.26 | 73.80 | 85.26 | 74.37 | a | 71.57 | 62.52 | 48.90 | 46.13 | 59.52 | ||||||||||||
| 1961 | 47.65 | 46.29 | 49.71 | 55.10 | 62.68 | 79.13 | 81.52 | 83.42 | 69.63 | 59.48 | 48.60 | 42.48 | 60.47 | |||||||||||||
| 1962 | 41.87 | 48.43 | 47.48 | 60.40 | 57.74 | 72.23 | 77.65 | 74.65 | 73.43 | 62.52 | 52.07 | 46.00 | 59.54 | |||||||||||||
| 1963 | 40.13 | 53.93 | 50.97 | 51.40 | 66.71 | 67.97 | 71.52 | 75.45 | 75.43 | 61.68 | 49.60 | 44.48 | 59.11 | |||||||||||||
| 1964 | 42.58 | 48.52 | 47.87 | 54.33 | 61.94 | 67.70 | 75.16 | 72.81 | 67.60 | 63.74 | 46.77 | 40.16 | 57.43 | |||||||||||||
| 1965 | 42.52 | 45.86 | 56.29 | 60.07 | 62.65 | 72.23 | 81.61 | 76.48 | 71.60 | 65.55 | 52.63 | 43.06 | 60.88 | |||||||||||||
| 1966 | 41.16 | 45.46 | 50.58 | 60.38 | a | 70.39 | 70.50 | 75.81 | 78.71 | 74.07 | 62.13 | 51.40 | 45.42 | 60.50 | ||||||||||||
| 1967 | 44.87 | 48.71 | 46.94 | 53.47 | 67.23 | 76.37 | 82.68 | 89.68 | 80.90 | 61.20 | a | 52.40 | 42.06 | 62.21 | ||||||||||||
| 1968 | 42.03 | 53.69 | 55.52 | 59.87 | 66.19 | 72.33 | 81.10 | 75.77 | 70.43 | 59.42 | 51.97 | 39.90 | 60.69 | |||||||||||||
| 1969 | 34.29 | 41.79 | 54.42 | 57.31 | a | 70.68 | 74.43 | 77.58 | 76.13 | 72.33 | 59.87 | 53.33 | 45.03 | 59.77 | ||||||||||||
| 1970 | 42.16 | 53.32 | 54.10 | 52.20 | 67.10 | 77.87 | 82.10 | 80.29 | 67.93 | 60.29 | 50.43 | 40.87 | 60.72 | |||||||||||||
| 1971 | 41.03 | 45.75 | 46.23 | 55.83 | 66.26 | 64.93 | 78.29 | 81.74 | 69.50 | 58.06 | 47.13 | 39.23 | 57.83 | |||||||||||||
| 1972 | 39.23 | 44.76 | 51.90 | 51.45 | a | 68.77 | 70.73 | 81.55 | 82.42 | 68.40 | 62.39 | 50.73 | 39.23 | 59.30 | ||||||||||||
| 1973 | 40.10 | 48.89 | 50.65 | 60.53 | 68.13 | 70.50 | 80.87 | 74.39 | 71.53 | 58.55 | 45.53 | 45.16 | 59.57 | |||||||||||||
| 1974 | 38.94 | 42.75 | 48.26 | 54.17 | 59.42 | 70.70 | 74.83 | b | 77.77 | 75.67 | 64.03 | 49.63 | 43.29 | 58.29 | ||||||||||||
| 1975 | 40.29 | 42.39 | 46.52 | 50.53 | 63.23 | 67.10 | 74.81 | 68.58 | 74.07 | 57.39 | 47.70 | 45.23 | 56.49 | |||||||||||||
| 1976 | 44.16 | 44.55 | 47.35 | 56.53 | 66.77 | 67.00 | 73.55 | 69.48 | 70.47 | 61.32 | 52.90 | 43.97 | 58.17 | |||||||||||||
| 1977 | 41.55 | 47.79 | 44.87 | 60.67 | 57.10 | 71.13 | 73.77 | 79.84 | 64.47 | 59.58 | 43.73 | 41.48 | 57.16 | |||||||||||||
| 1978 | 40.94 | 44.86 | 54.00 | 53.43 | 58.84 | 71.37 | 75.39 | 73.06 | 62.57 | 63.71 | 44.40 | 37.06 | 56.64 | |||||||||||||
| 1979 | 31.61 | 39.11 | 52.42 | 53.23 | 64.23 | 71.60 | 76.42 | 72.97 | 72.23 | 61.32 | 46.47 | 42.65 | 57.02 | |||||||||||||
| 1980 | 36.68 | 42.76 | 45.16 | 58.10 | 64.18 | n | ----- | z | ----- | z | 71.00 | c | 68.89 | c | 62.61 | c | 48.07 | 44.06 | 53.04 | |||||||
| 1981 | 45.94 | 45.78 | a | 52.94 | 52.90 | a | 60.26 | 64.23 | 73.58 | 81.35 | 70.97 | 58.03 | 51.40 | 41.97 | 58.28 | |||||||||||
| 1982 | 37.45 | 42.75 | 48.80 | a | 52.50 | 63.74 | 71.30 | 73.45 | 74.55 | 69.90 | 58.74 | 45.40 | 41.81 | 56.70 | ||||||||||||
| 1983 | 47.00 | 48.32 | 53.74 | 60.00 | 70.06 | 67.53 | 72.00 | 77.42 | 70.23 | 62.52 | 50.23 | 37.29 | 59.70 | |||||||||||||
| 1984 | 45.81 | 48.97 | 53.52 | 54.07 | 60.90 | 67.47 | 80.52 | 79.68 | 70.57 | 56.19 | 47.33 | 39.52 | 58.71 | |||||||||||||
| 1985 | 42.52 | 43.04 | 50.97 | 58.77 | 65.97 | 72.80 | 87.13 | 77.35 | 67.47 | 59.10 | 39.60 | 42.74 | 58.95 | |||||||||||||
| 1986 | 48.00 | 46.82 | 58.65 | 55.63 | 65.00 | 76.63 | 72.55 | 85.94 | 68.67 | 67.23 | 51.30 | 44.90 | 61.78 | |||||||||||||
| 1987 | 42.68 | 51.11 | 52.81 | 63.93 | 69.29 | 76.57 | 75.81 | 82.23 | 78.53 | 72.19 | 53.77 | 42.06 | 63.41 | |||||||||||||
| 1988 | 42.58 | 50.66 | 53.06 | 59.67 | 63.61 | 71.40 | 80.10 | 80.06 | 74.90 | 67.35 | 48.43 | 45.94 | 61.48 | |||||||||||||
| 1989 | 42.77 | 40.25 | 47.97 | 63.30 | 65.77 | 75.23 | 74.29 | 75.52 | 80.00 | 62.23 | 52.07 | 47.61 | 60.58 | |||||||||||||
| 1990 | 45.29 | 42.71 | 56.19 | 63.00 | 63.77 | 70.73 | 83.90 | 81.06 | 77.13 | 59.45 | 50.53 | 38.13 | 60.99 | |||||||||||||
| 1991 | 43.23 | 55.86 | 51.03 | 56.27 | 60.84 | 66.90 | 81.45 | 81.68 | 79.97 | 67.45 | 49.93 | 45.42 | 61.67 | |||||||||||||
| 1992 | 47.10 | 54.97 | 63.84 | 62.03 | 76.03 | 79.37 | 81.29 | 83.94 | 72.73 | 64.42 | 49.53 | 40.52 | 64.65 | |||||||||||||
| 1993 | 38.65 | 45.86 | 55.48 | 55.43 | 70.19 | 69.37 | 69.94 | 79.06 | 79.73 | 66.61 | 47.87 | 45.52 | 60.31 | |||||||||||||
| 1994 | 48.84 | 44.68 | 57.55 | 60.67 | 69.39 | 71.80 | 84.00 | 80.81 | 78.07 | 61.26 | 43.73 | 43.48 | 62.02 | |||||||||||||
| 1995 | 47.26 | ----- | z | 54.94 | 58.07 | ----- | z | 72.13 | ----- | z | 76.32 | ----- | z | 60.71 | 53.97 | ----- | z | 60.48 | ||||||||
| 1996 | ----- | z | ----- | z | 54.39 | 58.67 | 60.90 | 72.80 | 85.77 | a | 81.74 | 69.83 | 60.10 | 49.72 | a | 42.48 | 63.64 | |||||||||
| 1997 | 43.52 | 49.50 | 50.81 | 56.80 | 71.55 | 70.97 | 79.00 | 82.16 | 75.07 | 58.94 | 54.67 | 44.39 | 61.45 | |||||||||||||
| 1998 | 44.61 | 49.61 | 54.06 | 60.63 | 61.52 | 72.97 | 81.42 | 82.94 | 79.67 | 62.03 | 49.60 | 42.06 | 61.76 | |||||||||||||
| 1999 | 45.29 | 44.75 | 50.42 | 61.33 | 64.19 | 68.80 | 79.55 | 79.74 | 77.93 | 63.76 | b | 54.00 | 47.03 | 61.40 | ||||||||||||
| 2000 | 42.16 | 48.59 | 52.83 | a | 64.97 | 66.32 | 76.37 | 80.10 | 80.35 | 72.37 | 61.71 | 48.00 | 44.52 | 61.52 | ||||||||||||
| 2001 | 46.32 | 47.96 | 54.84 | 56.17 | 70.52 | 70.23 | 77.06 | 79.16 | 75.67 | 60.77 | 52.73 | 43.84 | 61.27 | |||||||||||||
| 2002 | 42.81 | 48.75 | 50.06 | 59.03 | 64.42 | 74.67 | 81.84 | 81.45 | 78.27 | 63.42 | 55.63 | 46.81 | 62.26 | |||||||||||||
| 2003 | 49.77 | ----- | z | 51.32 | 56.57 | 65.58 | 77.47 | 85.52 | 83.10 | 77.93 | ----- | z | 48.43 | 44.06 | 63.98 | |||||||||||
| 2004 | 42.61 | 49.17 | 57.52 | 65.07 | 65.87 | 74.30 | 83.16 | 80.81 | 69.90 | 62.74 | 52.23 | 46.45 | 62.49 | |||||||||||||
| 2005 | 46.03 | 55.54 | 58.87 | 58.20 | 67.58 | 67.97 | 79.90 | 83.45 | 73.40 | 61.06 | 49.03 | 42.97 | 62.00 | |||||||||||||
| 2006 | 45.52 | 47.39 | 49.39 | 61.23 | ----- | z | 75.03 | 83.06 | 81.55 | 76.50 | 61.16 | 48.40 | 44.42 | 61.24 | ||||||||||||
| 2007 | 42.74 | 47.21 | 55.13 | 58.40 | 69.26 | 73.00 | 81.00 | 78.77 | 72.20 | 58.90 | 49.93 | ----- | z | 62.41 | ||||||||||||
| 2008 | 39.58 | 46.62 | 49.77 | 51.93 | 66.42 | 69.17 | 80.00 | 79.65 | 76.03 | 62.61 | 54.03 | 40.35 | 59.68 | |||||||||||||
| 2009 | 42.19 | e | 46.82 | 47.61 | 59.90 | 70.29 | 73.33 | 86.52 | 79.97 | 76.50 | 58.35 | 48.80 | 41.45 | 60.98 | ||||||||||||
| 2010 | 48.45 | 52.21 | 55.71 | 56.77 | 61.39 | 68.97 | 79.23 | 79.84 | 70.87 | 63.29 | 48.53 | 45.16 | 60.87 | |||||||||||||
| 2011 | 44.23 | 44.61 | 47.74 | 52.43 | 62.10 | 69.10 | 75.65 | 80.45 | b | 78.21 | a | 60.60 | a | 49.07 | 45.81 | 59.16 | ||||||||||
| 2012 | 44.74 | 47.90 | 48.26 | 58.30 | g | 66.16 | l | 67.83 | f | 78.05 | j | 83.83 | h | 77.30 | g | 62.24 | b | 52.41 | c | 37.74 | 48.88 | |||||
| 2013 | 42.46 | e | 35.29 | 54.75 | c | 78.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.17 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 42.85 | 46.98 | 51.93 | 57.50 | 65.22 | 71.66 | 79.05 | 78.83 | 73.03 | 61.77 | 49.75 | 43.04 | 60.12 | |||||||||||||
| S.D. | 3.58 | 4.16 | 3.88 | 3.74 | 4.04 | 3.55 | 4.25 | 4.10 | 4.35 | 2.91 | 3.12 | 2.66 | 1.88 | |||||||||||||
| SKEW | -0.58 | -0.02 | 0.44 | 0.04 | 0.15 | 0.21 | -0.16 | -0.30 | -0.09 | 1.02 | -0.66 | -0.51 | -0.14 | |||||||||||||
| MAX | 49.77 | 55.86 | 63.84 | 65.07 | 76.03 | 79.37 | 87.13 | 89.68 | 80.90 | 72.19 | 55.63 | 47.61 | 64.65 | |||||||||||||
| MIN | 31.61 | 35.29 | 44.87 | 50.53 | 57.10 | 64.23 | 69.94 | 68.58 | 62.57 | 56.19 | 39.60 | 37.06 | 56.49 | |||||||||||||
| NO YRS | 53 | 52 | 55 | 53 | 50 | 52 | 51 | 53 | 52 | 53 | 54 | 52 | 46 | |||||||||||||