| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.56 | 73.29 | 68.28 | 57.73 | 45.69 | f | 32.44 | 61.66 | ||||||
| 1949 | 23.79 | 35.80 | 44.71 | 58.73 | 62.31 | 73.25 | 76.77 | 73.21 | 69.98 | 56.58 | 52.78 | 37.29 | 55.43 | |||||||||||||
| 1950 | 32.87 | 45.18 | 48.31 | 58.93 | 63.21 | 70.15 | 78.40 | 74.97 | 66.87 | 60.31 | 50.10 | 45.10 | 57.87 | |||||||||||||
| 1951 | 39.10 | 41.86 | 48.05 | 56.32 | 63.82 | 72.03 | 78.58 | 74.35 | 70.83 | 56.47 | 44.53 | 34.66 | 56.72 | |||||||||||||
| 1952 | 30.42 | 41.31 | 40.56 | 54.82 | 64.18 | 67.05 | 76.66 | 74.98 | 67.88 | 60.81 | 41.90 | 36.76 | 54.78 | |||||||||||||
| 1953 | 43.45 | 42.18 | 47.42 | 54.05 | 55.47 | 68.00 | 79.55 | 72.55 | 69.93 | 55.05 | 46.52 | 39.58 | 56.15 | |||||||||||||
| 1954 | 37.94 | 46.34 | 43.81 | 58.60 | 66.87 | 69.95 | 77.37 | 71.15 | 65.75 | 56.44 | 48.38 | 37.21 | 56.65 | |||||||||||||
| 1955 | 27.13 | 37.75 | 45.48 | 49.87 | 58.16 | 69.18 | 74.81 | 75.76 | 67.03 | 58.37 | 45.33 | 39.10 | 54.00 | |||||||||||||
| 1956 | 39.18 | 37.53 | 48.13 | 52.90 | 61.23 | 71.28 | 75.13 | 71.79 | 68.93 | 54.82 | 47.25 | 41.42 | 55.80 | |||||||||||||
| 1957 | 32.08 | 45.43 | 49.32 | 53.83 | 59.73 | 73.13 | 74.87 | 73.05 | 67.82 | 53.89 | 43.93 | 40.85 | 55.66 | |||||||||||||
| 1958 | 39.81 | 44.38 | 41.97 | 52.17 | 64.63 | 69.00 | 75.76 | 77.35 | 68.25 | 59.92 | 47.17 | 44.06 | 57.04 | |||||||||||||
| 1959 | 40.98 | 38.50 | 50.52 | 58.02 | 60.26 | 73.52 | 79.95 | 73.74 | 65.90 | 59.69 | 48.77 | 40.58 | 57.54 | |||||||||||||
| 1960 | 33.21 | 40.36 | 51.60 | 56.80 | 63.02 | 75.87 | 78.40 | 76.03 | 70.45 | 56.92 | 43.90 | 39.69 | 57.19 | |||||||||||||
| 1961 | 40.53 | 44.54 | 47.44 | 56.17 | 61.47 | 75.63 | 79.05 | 74.71 | 65.05 | 56.35 | 42.98 | 37.84 | 56.81 | |||||||||||||
| 1962 | 38.29 | 40.70 | 42.39 | 58.75 | 58.40 | 69.48 | 74.66 | 73.89 | 67.35 | 59.68 | 47.33 | 40.56 | 55.96 | |||||||||||||
| 1963 | 36.44 | 48.55 | 44.47 | 48.28 | 62.98 | 65.30 | 74.71 | 73.13 | 69.42 | 60.15 | 45.92 | 41.44 | 55.90 | |||||||||||||
| 1964 | 35.23 | 42.34 | 44.45 | 52.68 | 59.98 | 69.95 | 76.94 | 75.48 | 65.87 | 61.55 | 41.82 | 39.77 | 55.51 | |||||||||||||
| 1965 | 41.02 | 43.80 | 46.65 | 53.02 | 59.40 | 67.02 | 74.68 | 74.15 | 63.20 | 60.84 | 46.30 | 36.65 | 55.56 | |||||||||||||
| 1966 | 34.85 | 39.14 | 49.63 | 57.38 | 66.69 | 71.40 | 75.63 | 77.32 | 67.10 | 58.31 | 46.45 | 39.81 | 56.98 | |||||||||||||
| 1967 | 39.81 | 43.55 | 47.47 | 44.87 | 61.76 | 67.83 | 78.44 | 77.87 | 68.13 | 59.24 | 49.28 | 33.97 | 56.02 | |||||||||||||
| 1968 | 37.94 | 47.22 | 48.13 | 53.88 | 63.29 | 73.45 | 77.76 | 71.61 | 68.00 | 58.50 | 45.85 | 33.90 | 56.63 | |||||||||||||
| 1969 | 38.45 | 30.09 | 40.05 | 54.05 | 65.58 | 68.85 | 76.45 | 76.73 | 69.42 | 52.37 | 46.45 | 39.27 | 54.81 | |||||||||||||
| 1970 | 37.84 | 45.25 | 46.90 | 49.48 | 64.18 | 70.53 | 77.77 | 77.89 | 64.93 | 54.84 | 45.75 | 35.42 | 55.90 | |||||||||||||
| 1971 | 41.52 | 42.96 | 47.37 | 52.90 | 57.48 | 70.37 | 78.42 | 78.03 | 66.43 | 52.50 | 43.13 | 33.44 | 55.38 | |||||||||||||
| 1972 | 37.66 | 44.83 | 54.97 | 53.72 | 62.89 | 72.57 | 78.77 | 74.60 | 65.18 | 53.74 | 42.93 | 34.71 | 56.38 | |||||||||||||
| 1973 | 31.65 | 40.59 | 42.79 | 52.22 | 65.40 | 72.30 | 77.18 | 73.65 | 66.73 | 56.19 | 43.37 | 40.47 | 55.21 | |||||||||||||
| 1974 | 29.66 | 41.77 | 48.97 | 52.68 | 64.58 | 73.87 | 76.34 | 73.71 | 70.50 | 55.73 | 45.80 | 36.82 | 55.87 | |||||||||||||
| 1975 | 39.32 | 41.36 | 44.13 | 46.30 | 61.60 | 70.07 | 77.63 | 73.02 | 69.58 | 54.32 | 43.42 | 42.16 | 55.24 | |||||||||||||
| 1976 | 39.98 | 40.22 | 46.29 | 50.70 | 64.69 | 69.27 | 76.37 | 70.13 | 66.72 | 57.55 | 50.28 | 39.03 | 55.94 | |||||||||||||
| 1977 | 37.98 | 46.09 | 42.77 | 56.78 | 55.52 | 73.97 | 76.77 | 76.87 | 66.70 | 59.39 | 49.62 | 42.02 | 57.04 | |||||||||||||
| 1978 | 39.02 | 42.61 | 49.71 | 50.85 | 60.73 | 70.25 | 76.06 | 74.63 | 63.80 | 60.15 | 43.03 | 35.60 | 55.54 | |||||||||||||
| 1979 | 34.77 | 38.66 | 48.18 | 55.08 | 63.94 | 70.37 | 76.47 | 72.60 | 70.30 | 57.81 | 43.62 | 38.82 | 55.88 | |||||||||||||
| 1980 | 40.16 | 42.52 | 43.18 | 52.98 | 57.37 | 67.35 | 76.60 | 74.11 | 66.43 | 56.45 | 45.82 | 42.66 | 55.47 | |||||||||||||
| 1981 | 39.39 | 44.68 | 46.19 | 56.77 | 63.61 | 75.75 | 77.60 | 76.63 | 70.13 | 53.13 | 46.75 | 42.66 | 57.77 | |||||||||||||
| 1982 | 32.05 | 43.52 | 43.79 | 52.05 | 62.24 | 68.22 | 75.31 | 74.39 | 64.70 | 54.53 | 40.35 | 37.23 | 54.03 | |||||||||||||
| 1983 | 39.73 | 43.02 | 46.19 | 47.87 | 60.97 | 69.93 | 72.47 | 72.61 | 68.38 | 57.31 | 44.98 | 40.55 | 55.33 | |||||||||||||
| 1984 | 42.44 | 43.09 | 50.53 | 52.00 | 68.53 | 70.43 | 78.00 | 75.06 | 69.38 | 52.29 | 42.43 | 32.05 | 56.35 | |||||||||||||
| 1985 | 38.06 | 41.71 | 44.31 | 57.80 | 62.55 | 74.42 | 78.13 | 73.15 | 61.90 | 54.44 | 41.82 | 38.82 | 55.59 | |||||||||||||
| 1986 | 42.24 | 43.91 | 50.02 | 52.98 | 62.76 | 72.07 | 73.26 | 75.58 | 60.62 | 53.87 | 45.55 | 38.13 | 55.92 | |||||||||||||
| 1987 | 36.71 | 41.12 | 45.76 | 56.85 | 62.19 | 71.53 | 72.73 | 74.82 | 67.88 | 59.48 | 44.83 | 32.37 | 55.52 | |||||||||||||
| 1988 | 36.73 | 44.86 | 48.92 | 53.77 | 61.13 | 70.32 | 79.19 | 75.10 | 66.42 | 61.79 | 45.32 | 34.60 | 56.51 | |||||||||||||
| 1989 | 35.24 | 38.88 | 51.23 | 60.52 | 62.94 | 71.00 | 78.10 | 72.18 | 66.17 | 54.76 | 46.93 | 40.84 | 56.56 | |||||||||||||
| 1990 | 38.21 | 39.11 | 50.52 | 58.13 | 61.24 | 71.65 | 77.71 | 73.32 | 67.80 | 57.66 | 45.75 | 31.53 | 56.05 | |||||||||||||
| 1991 | 37.31 | 45.79 | 41.85 | 51.62 | 57.84 | 69.13 | 77.23 | 74.44 | 69.28 | 59.58 | 46.07 | 38.52 | 55.72 | |||||||||||||
| 1992 | 37.45 | 43.98 | 47.45 | 58.97 | 66.55 | 68.63 | 74.69 | 76.29 | 69.07 | 60.18 | 43.47 | 34.23 | 56.75 | |||||||||||||
| 1993 | 30.77 | 37.88 | 50.06 | 55.20 | 64.10 | 68.62 | 75.06 | 73.60 | 66.47 | 57.50 | 42.52 | 36.76 | 54.88 | |||||||||||||
| 1994 | 39.85 | 37.64 | 51.02 | 55.57 | 62.34 | 73.85 | 79.77 | 76.76 | 65.53 | 54.44 | 37.18 | 36.90 | 55.90 | |||||||||||||
| 1995 | 37.62 | a | 48.32 | 46.50 | 52.50 | 57.74 | 65.23 | 74.44 | 74.58 | 68.52 | 57.55 | 51.07 | 39.71 | 56.15 | ||||||||||||
| 1996 | 40.48 | 43.52 | 48.39 | 56.14 | b | 63.66 | 72.40 | 78.81 | 76.39 | 66.10 | 55.10 | 45.07 | 39.76 | 57.15 | ||||||||||||
| 1997 | 40.08 | 42.39 | 50.06 | 53.88 | 66.26 | 70.42 | 73.89 | 74.15 | 67.10 | 54.55 | 44.58 | 35.34 | 56.06 | |||||||||||||
| 1998 | 39.16 | 38.04 | 47.03 | 49.17 | 54.05 | 65.45 | 75.66 | 76.13 | 66.88 | 52.68 | 43.42 | 37.26 | 53.74 | |||||||||||||
| 1999 | 40.56 | 41.16 | 47.21 | 49.73 | 62.87 | 70.55 | 75.52 | 71.98 | 67.68 | 59.27 | 47.25 | 40.15 | 56.16 | |||||||||||||
| 2000 | 39.69 | 42.53 | 48.15 | 57.43 | 66.24 | 73.75 | 75.08 | 74.92 | 66.50 | 55.10 | 39.87 | 40.26 | 56.63 | |||||||||||||
| 2001 | 36.73 | 36.23 | 50.48 | 51.53 | 68.35 | 73.43 | 74.60 | 77.13 | 69.92 | 60.52 | 45.12 | 36.32 | 56.70 | |||||||||||||
| 2002 | 36.58 | 43.96 | 44.95 | 55.50 | 62.92 | 74.70 | 79.82 | 74.94 | 68.10 | 55.47 | 46.53 | 36.58 | 56.67 | |||||||||||||
| 2003 | 44.40 | 40.98 | 49.76 | 50.10 | 63.06 | 73.63 | 80.08 | 75.21 | 70.45 | 61.13 | 40.45 | 36.45 | 57.14 | |||||||||||||
| 2004 | 37.11 | 39.52 | 55.00 | 55.47 | 63.71 | 72.32 | 77.26 | 73.65 | a | 65.67 | 53.81 | 43.52 | 40.23 | 56.44 | ||||||||||||
| 2005 | 39.81 | 42.82 | 48.24 | 51.28 | 63.13 | 68.52 | 80.56 | 74.61 | 63.52 | 56.53 | 48.20 | 40.47 | 56.47 | |||||||||||||
| 2006 | 35.10 | 42.82 | 41.37 | 54.13 | 64.58 | 73.73 | 79.61 | 72.68 | 65.62 | 54.66 | 46.93 | 38.08 | 55.78 | |||||||||||||
| 2007 | 36.66 | 42.79 | 52.11 | 56.58 | 64.42 | 72.93 | 79.68 | 76.24 | 65.92 | 55.60 | 47.70 | 34.60 | 57.10 | |||||||||||||
| 2008 | 35.44 | 41.97 | 48.29 | 53.67 | 60.87 | 70.88 | 78.06 | 76.66 | 67.18 | 56.27 | 49.88 | 33.97 | 56.10 | |||||||||||||
| 2009 | 42.45 | 39.80 | 46.68 | 52.70 | 68.56 | 67.92 | 78.69 | 73.98 | 70.10 | 54.50 | 45.38 | 34.81 | 56.30 | |||||||||||||
| 2010 | 36.68 | 41.23 | 45.73 | 49.87 | 56.00 | 72.67 | 79.44 | 73.98 | 68.58 | 57.21 | 43.60 | 40.40 | 55.45 | |||||||||||||
| 2011 | 41.52 | 40.45 | 47.94 | 52.82 | 57.98 | 68.78 | 74.81 | 74.97 | 69.07 | 57.82 | 40.47 | 36.21 | 55.24 | |||||||||||||
| 2012 | 39.37 | 41.64 | 47.90 | 55.45 | 64.45 | 71.17 | 75.06 | 77.63 | 69.52 | 58.03 | 45.77 | 37.74 | d | 56.98 | ||||||||||||
| 2013 | 38.78 | a | 41.38 | 53.18 | 54.50 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.50 | z | 44.45 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 37.48 | 41.91 | 47.27 | 53.84 | 62.32 | 70.88 | 76.92 | 74.62 | 67.37 | 56.91 | 45.29 | 37.95 | 56.06 | |||||||||||||
| S.D. | 3.83 | 3.15 | 3.26 | 3.30 | 3.23 | 2.56 | 1.97 | 1.78 | 2.16 | 2.56 | 2.89 | 3.06 | 0.85 | |||||||||||||
| SKEW | -1.18 | -0.70 | -0.04 | -0.31 | -0.44 | -0.15 | -0.25 | -0.07 | -0.64 | 0.06 | -0.03 | -0.08 | -0.52 | |||||||||||||
| MAX | 44.40 | 48.55 | 55.00 | 60.52 | 68.56 | 75.87 | 80.56 | 78.03 | 70.83 | 61.79 | 52.78 | 45.10 | 57.87 | |||||||||||||
| MIN | 23.79 | 30.09 | 40.05 | 44.87 | 54.05 | 65.23 | 72.47 | 70.13 | 60.62 | 52.29 | 37.18 | 31.53 | 53.74 | |||||||||||||
| NO YRS | 65 | 65 | 65 | 64 | 64 | 64 | 65 | 65 | 65 | 65 | 64 | 65 | 64 | |||||||||||||