| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.39 | h | 9999.00 | |
| 1952 | 44.45 | 49.62 | 52.43 | a | 64.23 | h | 69.81 | 70.57 | 84.68 | 82.27 | a | 81.93 | a | 71.77 | a | 47.70 | 48.60 | a | 63.98 | |||||||
| 1953 | 52.27 | a | 52.32 | 53.90 | a | 59.07 | a | 64.29 | 66.57 | 80.52 | b | 78.87 | 77.43 | 65.37 | a | 56.23 | 51.24 | b | 63.17 | |||||||
| 1954 | 47.07 | a | 52.89 | 56.10 | b | 61.40 | 69.74 | 68.53 | 74.94 | 74.42 | 72.20 | 64.41 | b | 56.20 | 46.94 | 62.07 | ||||||||||
| 1955 | 44.68 | 47.71 | 50.55 | 55.23 | 65.34 | b | 73.10 | 73.97 | 81.29 | 75.00 | 62.70 | a | 51.07 | b | 47.97 | 60.72 | ||||||||||
| 1956 | 48.58 | 43.54 | a | 53.16 | 64.07 | 71.61 | 71.03 | 84.81 | d | 79.94 | 76.70 | 62.70 | a | 50.57 | b | 46.70 | a | 62.78 | ||||||||
| 1957 | 40.84 | 52.70 | a | 56.27 | a | 63.67 | 69.03 | 73.17 | 78.45 | 76.52 | 81.90 | 63.42 | 53.63 | 53.97 | a | 63.63 | ||||||||||
| 1958 | 50.42 | 58.18 | 57.13 | 62.07 | 74.68 | 75.53 | 88.26 | 86.55 | 75.47 | 68.19 | 54.70 | 52.55 | 66.98 | |||||||||||||
| 1959 | 50.45 | 51.43 | 57.81 | 62.93 | 66.03 | a | 72.63 | 84.23 | 82.06 | 71.20 | 63.90 | 53.70 | 47.39 | 63.65 | ||||||||||||
| 1960 | 43.68 | 50.45 | 55.06 | 60.83 | 63.61 | 76.87 | 86.17 | a | 77.32 | 75.20 | 64.16 | 53.83 | 47.48 | 62.89 | ||||||||||||
| 1961 | 51.74 | 53.50 | 54.55 | 61.27 | 66.16 | 79.57 | 83.87 | 86.84 | 72.60 | 63.67 | a | 51.47 | 47.61 | 64.40 | ||||||||||||
| 1962 | 45.61 | 50.43 | 53.06 | 63.57 | 61.13 | 74.77 | 82.42 | 78.97 | 76.17 | 61.84 | 55.33 | 48.29 | 62.63 | |||||||||||||
| 1963 | 42.55 | 58.29 | 55.13 | 56.23 | 69.32 | 71.27 | 75.65 | 80.52 | 79.63 | 65.16 | 53.93 | 48.39 | 63.01 | |||||||||||||
| 1964 | 48.32 | 50.97 | 53.13 | 58.67 | 65.16 | 71.20 | 79.29 | 77.94 | 72.90 | 67.32 | 49.07 | 45.23 | 61.60 | |||||||||||||
| 1965 | 46.13 | 51.64 | 60.65 | 63.20 | 65.55 | 75.00 | 85.87 | 82.06 | 76.40 | 67.10 | 55.67 | 45.55 | 64.57 | |||||||||||||
| 1966 | 46.45 | 49.96 | 55.32 | 64.10 | 70.68 | 76.10 | 80.13 | 83.23 | 77.70 | 65.13 | 54.77 | 50.65 | 64.52 | |||||||||||||
| 1967 | 50.48 | 54.04 | 53.13 | 56.63 | 69.65 | 78.80 | 85.35 | 91.10 | 82.30 | 64.48 | 54.80 | 47.23 | 65.67 | |||||||||||||
| 1968 | 46.97 | 58.93 | 58.42 | 59.27 | 66.87 | 75.10 | 82.45 | 76.84 | 73.67 | 62.39 | 53.73 | 45.10 | 63.31 | |||||||||||||
| 1969 | 40.65 | 48.11 | 58.94 | 60.37 | 71.94 | 76.17 | 79.35 | 79.42 | 75.17 | 61.23 | 53.20 | 48.77 | 62.77 | |||||||||||||
| 1970 | 47.29 | 55.64 | 56.87 | 57.00 | 68.74 | 78.30 | 83.35 | 82.23 | 71.43 | 62.58 | 54.87 | 46.06 | 63.70 | |||||||||||||
| 1971 | 45.77 | 48.00 | 52.00 | 60.00 | 68.58 | 69.23 | 80.94 | 83.48 | 72.73 | 61.35 | 51.30 | 45.39 | 61.57 | |||||||||||||
| 1972 | 45.26 | 51.90 | 58.77 | a | 56.77 | 71.13 | 73.63 | 85.32 | 85.45 | 72.97 | 64.26 | 55.03 | 43.55 | 63.67 | ||||||||||||
| 1973 | 45.87 | 55.50 | 55.00 | 62.27 | 71.68 | 73.67 | 83.87 | 78.97 | 75.73 | 62.06 | 50.10 | 49.35 | 63.67 | |||||||||||||
| 1974 | 45.58 | 48.14 | 56.29 | 59.53 | 64.87 | 75.93 | 77.68 | 81.87 | 84.20 | 68.32 | 54.87 | 50.45 | 63.98 | |||||||||||||
| 1975 | 48.97 | 50.86 | 52.61 | 56.23 | 67.77 | a | 72.50 | 80.55 | 76.81 | 81.80 | 59.68 | 51.50 | 49.26 | 62.38 | ||||||||||||
| 1976 | 48.39 | 49.07 | 52.87 | 58.83 | 68.48 | 70.27 | 80.10 | 77.65 | 76.20 | 66.42 | 55.40 | 46.00 | 62.47 | |||||||||||||
| 1977 | 48.35 | 54.61 | 53.97 | 64.90 | 61.90 | 76.50 | 80.23 | 86.10 | 69.90 | 64.65 | 52.07 | 50.06 | 63.60 | |||||||||||||
| 1978 | 48.94 | 53.14 | 60.16 | 59.57 | 66.00 | 77.90 | 81.71 | 79.97 | 69.37 | 68.13 | 50.20 | 43.74 | 63.24 | |||||||||||||
| 1979 | 38.48 | 47.54 | 58.00 | 58.53 | 66.97 | ----- | z | 81.53 | a | 77.19 | 74.97 | 66.90 | 51.50 | 51.68 | 61.21 | |||||||||||
| 1980 | 44.55 | 52.48 | 53.06 | 62.17 | 63.48 | 66.77 | 77.71 | 76.00 | 74.47 | 66.68 | 54.77 | 49.61 | 61.81 | |||||||||||||
| 1981 | 48.17 | a | 50.43 | 57.29 | 59.93 | 64.81 | 69.20 | 76.90 | 82.32 | 78.05 | j | 61.56 | o | 54.03 | 49.29 | g | 62.56 | |||||||||
| 1982 | 30.43 | x | 51.83 | p | 53.94 | 58.97 | 68.32 | 75.37 | 77.29 | 78.94 | 73.43 | 63.35 | 50.33 | 46.94 | 64.69 | |||||||||||
| 1983 | 48.97 | 52.61 | 56.10 | 60.20 | 68.26 | 67.80 | 72.19 | ----- | z | 71.10 | 62.58 | 53.97 | 41.81 | 59.60 | ||||||||||||
| 1984 | 49.77 | 53.21 | 57.29 | 56.60 | 62.97 | 67.97 | 78.84 | 80.00 | 73.10 | 58.39 | 52.17 | 44.26 | 61.21 | |||||||||||||
| 1985 | 43.55 | 47.64 | 53.48 | 62.43 | 67.77 | 75.10 | 85.74 | 80.00 | 71.17 | 64.10 | 45.13 | 42.29 | 61.53 | |||||||||||||
| 1986 | 51.39 | 51.96 | 60.26 | 58.17 | 65.19 | 76.17 | 74.19 | 84.10 | 68.80 | 64.48 | 52.93 | 46.48 | 62.84 | |||||||||||||
| 1987 | 45.87 | 52.25 | 56.42 | 63.83 | 69.32 | 75.93 | 75.55 | 79.97 | 76.70 | 71.90 | 53.93 | 43.94 | 63.80 | |||||||||||||
| 1988 | 44.71 | 50.66 | 54.94 | 60.00 | 63.55 | 70.63 | 79.77 | 79.52 | 76.27 | 66.45 | 52.50 | 45.23 | 62.02 | |||||||||||||
| 1989 | 46.58 | 42.86 | 52.74 | 64.50 | 65.84 | 74.40 | 74.39 | 75.06 | 77.93 | 62.29 | 53.62 | d | 45.06 | 61.27 | ||||||||||||
| 1990 | ----- | z | ----- | z | 57.29 | 63.77 | 64.73 | a | 70.10 | 81.81 | 79.16 | 77.07 | 61.29 | 53.33 | 39.65 | 64.82 | ||||||||||
| 1991 | ----- | z | 55.64 | 52.61 | 57.30 | 61.00 | ----- | z | 80.61 | ----- | z | ----- | z | 67.68 | 54.43 | 45.87 | 59.39 | |||||||||
| 1992 | 50.06 | 55.72 | 60.87 | 62.97 | 72.97 | 78.00 | 80.26 | 83.16 | 73.10 | 64.97 | 52.13 | 44.84 | 64.92 | |||||||||||||
| 1993 | 41.87 | 46.68 | 56.32 | 57.80 | 69.19 | 69.13 | 71.32 | 78.23 | 78.77 | 67.71 | 46.63 | 43.42 | 60.59 | |||||||||||||
| 1994 | 48.71 | 48.32 | 59.26 | 61.23 | 68.35 | 71.53 | 82.35 | 79.71 | 77.80 | 62.65 | 47.17 | 48.26 | 62.95 | |||||||||||||
| 1995 | 49.52 | 54.14 | 56.26 | 58.70 | 68.13 | 71.17 | 81.03 | 77.52 | 76.07 | 62.06 | 57.30 | 48.42 | 63.36 | |||||||||||||
| 1996 | 47.16 | 50.31 | 56.06 | 60.97 | 62.23 | 72.70 | 84.29 | 82.10 | 72.00 | 61.06 | 52.23 | 48.26 | 62.45 | |||||||||||||
| 1997 | 47.52 | 50.39 | 54.10 | 58.77 | 73.74 | 73.53 | 79.55 | 83.42 | 76.27 | 59.77 | 55.87 | 46.55 | 63.29 | |||||||||||||
| 1998 | 50.32 | 52.71 | 56.26 | 61.23 | 62.65 | 72.77 | 82.29 | 81.65 | 78.87 | 62.68 | 52.90 | 45.33 | a | 63.30 | ||||||||||||
| 1999 | 47.06 | 49.79 | 52.61 | 60.33 | 63.84 | 70.40 | 78.26 | 79.68 | 79.13 | 67.45 | 56.20 | 48.10 | 62.74 | |||||||||||||
| 2000 | 46.68 | 51.45 | 53.52 | 63.23 | 66.16 | 76.13 | 78.71 | 79.39 | 74.60 | 63.55 | 49.87 | 46.84 | 62.51 | |||||||||||||
| 2001 | 47.97 | 50.86 | 56.03 | 58.47 | 70.23 | 70.80 | 77.94 | 80.77 | 76.93 | 64.16 | 54.83 | 47.35 | 63.03 | |||||||||||||
| 2002 | 46.16 | 52.39 | 52.03 | 61.07 | 64.81 | 74.50 | 82.68 | 81.77 | 77.37 | 63.90 | 55.63 | 49.84 | 63.51 | |||||||||||||
| 2003 | 52.29 | 52.68 | 55.45 | 57.77 | 66.55 | 77.30 | 85.26 | 82.10 | 78.27 | 67.00 | 49.67 | 48.77 | 64.42 | |||||||||||||
| 2004 | 45.32 | 51.97 | 60.55 | 66.33 | 69.19 | 75.40 | 84.26 | 82.52 | 71.57 | 65.13 | 51.20 | 49.06 | 64.37 | |||||||||||||
| 2005 | 49.45 | 52.75 | 61.32 | 61.40 | 70.71 | 71.97 | 83.90 | 86.97 | 76.37 | 65.48 | 51.67 | 46.81 | 64.90 | |||||||||||||
| 2006 | 50.61 | 52.07 | 56.39 | 65.70 | ----- | z | 75.80 | 86.03 | 84.35 | 80.67 | 66.58 | 54.37 | 48.03 | 65.51 | ||||||||||||
| 2007 | 46.52 | 53.64 | 62.06 | 63.50 | 70.13 | 75.87 | 85.39 | 83.74 | 76.80 | 59.00 | 50.83 | 45.39 | 64.41 | |||||||||||||
| 2008 | 41.81 | 50.38 | 51.58 | 55.90 | 65.97 | 70.23 | 80.97 | 79.32 | 74.93 | 61.29 | 54.37 | 43.58 | 60.86 | |||||||||||||
| 2009 | 44.74 | 49.32 | 51.32 | 59.10 | 68.19 | 73.23 | 84.52 | 79.77 | 75.63 | 61.16 | 53.17 | 41.90 | 61.84 | |||||||||||||
| 2010 | 51.10 | 54.00 | 55.55 | 58.37 | 62.65 | 68.33 | 79.42 | 79.29 | 71.73 | 61.84 | 50.93 | 49.29 | 61.87 | |||||||||||||
| 2011 | 46.71 | 46.82 | 52.81 | 54.60 | 60.87 | 69.33 | 75.71 | ----- | z | 78.13 | 78.08 | g | 50.70 | 42.90 | 57.86 | |||||||||||
| 2012 | 47.06 | 49.90 | 51.42 | 60.93 | 65.77 | 70.03 | 78.57 | a | 81.97 | 77.83 | 65.16 | 53.90 | 46.74 | 62.44 | ||||||||||||
| 2013 | 40.06 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.06 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 46.89 | 51.44 | 55.55 | 60.37 | 67.07 | 73.08 | 80.71 | 80.83 | 75.69 | 64.26 | 52.77 | 46.93 | 63.06 | |||||||||||||
| S.D. | 3.13 | 3.15 | 2.83 | 2.78 | 3.29 | 3.26 | 3.82 | 3.20 | 3.39 | 2.82 | 2.54 | 2.77 | 1.28 | |||||||||||||
| SKEW | -0.51 | -0.12 | 0.43 | 0.04 | 0.08 | -0.06 | -0.37 | 0.60 | 0.21 | 0.41 | -0.79 | -0.08 | 0.39 | |||||||||||||
| MAX | 52.29 | 58.93 | 62.06 | 66.33 | 74.68 | 79.57 | 88.26 | 91.10 | 84.20 | 71.90 | 57.30 | 53.97 | 66.98 | |||||||||||||
| MIN | 38.48 | 42.86 | 50.55 | 54.60 | 60.87 | 66.57 | 71.32 | 74.42 | 68.80 | 58.39 | 45.13 | 39.65 | 60.59 | |||||||||||||
| NO YRS | 59 | 59 | 61 | 60 | 60 | 59 | 61 | 58 | 59 | 59 | 61 | 60 | 52 | |||||||||||||