| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.57 | a | 71.90 | 67.47 | 53.00 | 37.83 | 32.03 | 56.13 | ||||||
| 1949 | 26.81 | 34.68 | 37.52 | 51.63 | 63.77 | 71.63 | 78.35 | 78.03 | 70.50 | 47.61 | 45.23 | 35.35 | 53.43 | |||||||||||||
| 1950 | 30.03 | 34.39 | 38.48 | j | 46.83 | a | 59.77 | 67.32 | e | 77.52 | 81.19 | 74.04 | d | 53.00 | 40.77 | 39.35 | 54.93 | |||||||||
| 1951 | 32.55 | 35.29 | 38.10 | 58.23 | 61.55 | 72.80 | 81.42 | 79.26 | 74.43 | 52.17 | a | 42.59 | a | 33.50 | a | 55.16 | ||||||||||
| 1952 | 32.10 | 35.28 | 39.52 | 53.87 | 62.03 | 67.93 | 84.76 | f | 80.19 | ----- | z | 67.48 | 41.20 | 34.58 | 51.42 | |||||||||||
| 1953 | 37.48 | 41.96 | a | 46.26 | 53.60 | 57.32 | 63.77 | 83.90 | 77.00 | 78.07 | a | 61.81 | j | 47.35 | m | 39.23 | 57.86 | |||||||||
| 1954 | 36.26 | 41.78 | a | 47.45 | 54.97 | 64.81 | 63.07 | 76.48 | 70.93 | a | 68.33 | 56.29 | 50.40 | 37.81 | 55.71 | |||||||||||
| 1955 | 35.87 | 39.71 | 40.65 | 45.33 | 58.45 | 69.83 | 71.77 | 82.55 | 71.87 | 58.74 | 38.10 | 37.83 | a | 54.23 | ||||||||||||
| 1956 | 37.03 | 35.66 | 43.03 | 56.83 | 66.23 | 67.50 | 84.70 | a | 77.16 | 74.43 | 55.55 | 43.97 | 38.87 | 56.75 | ||||||||||||
| 1957 | 32.52 | 39.50 | 44.81 | 55.73 | 66.45 | 74.07 | 76.39 | 73.97 | 76.77 | 55.39 | 43.47 | 38.71 | 56.48 | |||||||||||||
| 1958 | 38.26 | 45.50 | 47.39 | 52.63 | 73.68 | 70.90 | 83.87 | 85.16 | 70.23 | 65.04 | g | 44.23 | 43.35 | 59.56 | ||||||||||||
| 1959 | 40.13 | 40.79 | 47.35 | 57.70 | 57.74 | 70.07 | 83.39 | 77.52 | 65.23 | 59.77 | 47.30 | 39.32 | 57.19 | |||||||||||||
| 1960 | 35.77 | 41.90 | 46.81 | 51.90 | 57.00 | 75.17 | 85.52 | 74.77 | 73.43 | 61.39 | 45.07 | 40.00 | 57.39 | |||||||||||||
| 1961 | 43.74 | 43.32 | 44.48 | 53.83 | 59.35 | 78.77 | 82.55 | 85.23 | 66.37 | 56.65 | 42.67 | 36.94 | 57.82 | |||||||||||||
| 1962 | 36.48 | 42.46 | 44.00 | 59.63 | 55.10 | 72.20 | 81.13 | 74.84 | 75.30 | 58.29 | 47.27 | 40.77 | 57.29 | |||||||||||||
| 1963 | 36.68 | 49.00 | 48.35 | 47.60 | 63.87 | 66.77 | 71.45 | 76.26 | 75.27 | 59.58 | 45.07 | 39.00 | 56.57 | |||||||||||||
| 1964 | 37.13 | 42.17 | 43.55 | 50.37 | 57.81 | 65.73 | 77.03 | 73.26 | 69.00 | 61.23 | 41.40 | 36.94 | 54.63 | |||||||||||||
| 1965 | 36.77 | 42.64 | 52.90 | 57.63 | 59.32 | 71.17 | 81.19 | 76.71 | 69.37 | 64.90 | 47.33 | 38.10 | 58.17 | |||||||||||||
| 1966 | 36.35 | 41.86 | 46.45 | 58.23 | 67.58 | 68.60 | 75.35 | 78.39 | 73.33 | 60.33 | a | 47.43 | 38.48 | 57.70 | ||||||||||||
| 1967 | 38.32 | 43.96 | 44.81 | 47.97 | 65.94 | 73.80 | 84.94 | 88.23 | 79.33 | 57.39 | 49.03 | 36.55 | 59.19 | |||||||||||||
| 1968 | 36.45 | 48.48 | 53.06 | 53.73 | 61.00 | 71.37 | 82.58 | 72.03 | 71.33 | 56.16 | 47.20 | 36.03 | 57.45 | |||||||||||||
| 1969 | 32.52 | 40.57 | 49.84 | 52.70 | 68.16 | 74.07 | 79.81 | 78.29 | 71.47 | 55.48 | 47.70 | 40.19 | 57.57 | |||||||||||||
| 1970 | 39.26 | 48.18 | 49.19 | 48.90 | 66.84 | 77.43 | 82.32 | 83.58 | 66.10 | 57.55 | 46.83 | 35.74 | 58.49 | |||||||||||||
| 1971 | 35.00 | 40.50 | 41.55 | 51.97 | 63.68 | 66.87 | 82.27 | a | 84.81 | 66.47 | 56.26 | 43.40 | 35.58 | 55.69 | ||||||||||||
| 1972 | 35.35 | 41.17 | 46.30 | a | 49.70 | 68.10 | 73.27 | 83.26 | 83.35 | 66.93 | 61.61 | 46.27 | 35.19 | 57.54 | ||||||||||||
| 1973 | 36.32 | 47.64 | 46.52 | 56.24 | a | 69.17 | b | 70.90 | 82.84 | 79.52 | 71.43 | 58.45 | 38.90 | 38.97 | 58.08 | |||||||||||
| 1974 | 35.13 | 39.46 | 45.52 | 51.30 | 58.58 | 78.10 | 78.23 | 81.58 | 80.63 | 66.65 | 47.67 | 40.71 | 58.63 | |||||||||||||
| 1975 | 38.26 | 40.32 | 44.74 | 47.47 | 61.61 | 68.62 | a | 79.65 | 74.16 | 79.00 | 54.74 | 42.20 | 39.74 | 55.88 | ||||||||||||
| 1976 | 39.42 | 40.45 | 44.84 | 51.93 | 65.90 | 68.50 | 79.03 | 72.39 | 74.97 | 64.61 | 51.53 | 39.52 | 57.76 | |||||||||||||
| 1977 | 39.23 | a | 52.00 | 44.10 | 61.00 | 55.23 | 78.33 | 79.10 | 84.39 | 66.23 | 60.94 | 43.13 | 41.68 | 58.78 | ||||||||||||
| 1978 | 41.42 | 46.50 | 55.58 | 52.83 | 57.68 | 71.80 | 79.26 | 75.10 | 63.77 | 66.23 | 42.50 | 35.74 | 57.37 | |||||||||||||
| 1979 | 36.19 | 38.39 | 53.06 | 51.10 | 66.81 | 74.17 | 80.06 | ----- | z | 76.17 | 63.55 | 45.63 | 41.65 | 56.98 | ||||||||||||
| 1980 | 38.13 | 47.90 | 45.55 | 56.57 | 61.65 | ----- | z | 81.29 | 77.19 | 72.27 | 62.86 | b | 48.10 | 39.90 | 57.40 | |||||||||||
| 1981 | 46.00 | 46.14 | 51.74 | 54.13 | 59.52 | 66.67 | 78.42 | 85.19 | 73.53 | 56.84 | 48.07 | 39.16 | 58.78 | |||||||||||||
| 1982 | 37.58 | 41.21 | 46.97 | 51.97 | 63.39 | 71.37 | 76.90 | 78.16 | 67.97 | 57.26 | 43.87 | 39.61 | 56.35 | |||||||||||||
| 1983 | 40.84 | 45.25 | 49.23 | 53.93 | 66.29 | 67.07 | 70.97 | 79.23 | 69.70 | 60.45 | 45.30 | 34.19 | 56.87 | |||||||||||||
| 1984 | 40.94 | 44.24 | 50.90 | 50.33 | 60.26 | 68.07 | 84.26 | ----- | z | 69.43 | 53.81 | 42.90 | 36.52 | 54.70 | ||||||||||||
| 1985 | 38.90 | 41.79 | 48.00 | 58.53 | 64.84 | 74.83 | 87.77 | 77.13 | 64.13 | 57.74 | 38.13 | 36.03 | 57.32 | |||||||||||||
| 1986 | 42.13 | 42.82 | 55.45 | 55.23 | 65.35 | 78.17 | 74.77 | 85.65 | 64.17 | 65.19 | 46.63 | 40.61 | 59.68 | |||||||||||||
| 1987 | 39.29 | 46.21 | 50.97 | 65.23 | 67.84 | 78.13 | 76.20 | a | 82.23 | 78.77 | 74.29 | 48.70 | 37.61 | 62.12 | ||||||||||||
| 1988 | 36.35 | 44.83 | 49.48 | 58.27 | 62.61 | 70.90 | 81.13 | 82.35 | 75.67 | 70.32 | 43.07 | 39.61 | 59.55 | |||||||||||||
| 1989 | 37.32 | 37.04 | 46.71 | 61.43 | 61.71 | 74.90 | 75.90 | 75.32 | 77.23 | 60.81 | 49.17 | 39.58 | 58.09 | |||||||||||||
| 1990 | 40.58 | 39.14 | 52.42 | 64.53 | 61.58 | 71.07 | 82.90 | 79.87 | ----- | z | 58.00 | 45.77 | 32.16 | 57.09 | ||||||||||||
| 1991 | 39.81 | 51.07 | 47.65 | 52.23 | 58.03 | 65.47 | 82.19 | ----- | z | 81.43 | 65.23 | 46.87 | 39.84 | 57.26 | ||||||||||||
| 1992 | 42.52 | 52.10 | 61.13 | 59.30 | 74.87 | 77.50 | 79.06 | 83.84 | 71.30 | 61.74 | 45.47 | 36.35 | 62.10 | |||||||||||||
| 1993 | 36.45 | 41.32 | 50.90 | 52.23 | 67.32 | 67.10 | 68.74 | 77.77 | 78.47 | 64.13 | 44.07 | 39.68 | 57.35 | |||||||||||||
| 1994 | 42.65 | 42.25 | 55.26 | 58.70 | 66.19 | 70.10 | 84.29 | 79.84 | 77.70 | 59.32 | 38.40 | 36.61 | 59.28 | |||||||||||||
| 1995 | 41.42 | 48.50 | 49.42 | 53.97 | 65.23 | 68.90 | 78.68 | 76.58 | 76.00 | 57.45 | 50.50 | 42.06 | 59.06 | |||||||||||||
| 1996 | 39.48 | 41.79 | 51.32 | 55.50 | 59.55 | 72.63 | 86.06 | 82.32 | 70.47 | 58.29 | 45.27 | 36.90 | 58.30 | |||||||||||||
| 1997 | 38.06 | 44.86 | 47.81 | 54.33 | 69.71 | 68.93 | 78.68 | 80.97 | 73.17 | 56.29 | 50.20 | 40.42 | 58.62 | |||||||||||||
| 1998 | 41.00 | 45.68 | 50.65 | 56.20 | 57.23 | 70.33 | 84.81 | 84.32 | 79.03 | 58.29 | 43.80 | 35.74 | 58.92 | |||||||||||||
| 1999 | 38.58 | 38.82 | 46.48 | 53.47 | 59.32 | 70.17 | 79.39 | 79.74 | 76.57 | 65.32 | 48.90 | 39.61 | 58.03 | |||||||||||||
| 2000 | 37.61 | 42.79 | 48.03 | 61.63 | 61.13 | 74.47 | 78.68 | 81.45 | 72.17 | 59.58 | 43.23 | 39.26 | 58.34 | |||||||||||||
| 2001 | 42.32 | 44.96 | 52.52 | 52.13 | 70.16 | 69.53 | 77.84 | 81.87 | 76.87 | 60.42 | 47.40 | 36.61 | 59.39 | |||||||||||||
| 2002 | 36.94 | 44.54 | 44.26 | 55.23 | 61.84 | 73.57 | 83.74 | 79.97 | 75.60 | 62.10 | 48.97 | 38.77 | 58.79 | |||||||||||||
| 2003 | 43.71 | 45.93 | 48.32 | 51.40 | 61.71 | 76.30 | 85.77 | 82.06 | 77.40 | 61.84 | 41.83 | 38.58 | 59.57 | |||||||||||||
| 2004 | 37.68 | 43.72 | 55.55 | 61.07 | 62.26 | 72.90 | 83.26 | 80.81 | 68.17 | 59.35 | 46.03 | 40.61 | 59.28 | |||||||||||||
| 2005 | 40.32 | 47.39 | 53.16 | 53.77 | 63.03 | 65.43 | 82.42 | 84.00 | 72.20 | 58.74 | 41.23 | 37.39 | 58.26 | |||||||||||||
| 2006 | 38.13 | 40.93 | 44.90 | 56.43 | 66.94 | 73.13 | 84.19 | 80.71 | 75.03 | 60.71 | 42.13 | 37.19 | 58.37 | |||||||||||||
| 2007 | 35.65 | 41.14 | 52.48 | 54.90 | 66.23 | 70.60 | 81.77 | 77.97 | 70.43 | 52.87 | 46.80 | 34.65 | 57.12 | |||||||||||||
| 2008 | 33.81 | 44.10 | 43.48 | 48.67 | 62.87 | 68.67 | 81.23 | a | 78.81 | 76.50 | 59.03 | 47.90 | 35.61 | 56.72 | ||||||||||||
| 2009 | 39.94 | 43.18 | 41.97 | 53.33 | 66.81 | 71.60 | 84.16 | 80.10 | 77.23 | 55.42 | 42.37 | 35.84 | 57.66 | |||||||||||||
| 2010 | 42.94 | 46.46 | 49.61 | 51.80 | 55.26 | 64.27 | 82.61 | 78.94 | 70.07 | 60.10 | 43.57 | 37.65 | 56.94 | |||||||||||||
| 2011 | 39.65 | 40.32 | 43.58 | 49.17 | 55.55 | 67.00 | 75.52 | 82.23 | 80.00 | 59.29 | 43.63 | 38.23 | 56.18 | |||||||||||||
| 2012 | 38.71 | 42.55 | 41.94 | 55.57 | 63.84 | 65.77 | 81.16 | 85.55 | 79.60 | 59.84 | 47.13 | 37.84 | 58.29 | |||||||||||||
| 2013 | 36.33 | a | 42.61 | 49.29 | 72.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.00 | z | 42.74 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 37.95 | 42.91 | 47.73 | 54.29 | 62.98 | 70.95 | 80.23 | 79.58 | 72.95 | 59.59 | 44.98 | 37.97 | 57.75 | |||||||||||||
| S.D. | 3.35 | 3.98 | 4.54 | 4.19 | 4.45 | 3.94 | 3.98 | 3.94 | 4.64 | 4.52 | 3.26 | 2.34 | 1.61 | |||||||||||||
| SKEW | -0.48 | 0.07 | 0.22 | 0.35 | 0.26 | 0.19 | -0.69 | -0.18 | -0.18 | 0.49 | -0.29 | -0.33 | -0.04 | |||||||||||||
| MAX | 46.00 | 52.10 | 61.13 | 65.23 | 74.87 | 78.77 | 87.77 | 88.23 | 81.43 | 74.29 | 51.53 | 43.35 | 62.12 | |||||||||||||
| MIN | 26.81 | 34.39 | 37.52 | 45.33 | 55.10 | 63.07 | 68.74 | 70.93 | 63.77 | 47.61 | 37.83 | 32.03 | 53.43 | |||||||||||||
| NO YRS | 65 | 65 | 64 | 64 | 64 | 63 | 64 | 62 | 63 | 63 | 64 | 65 | 55 | |||||||||||||