| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 55.9 | 57.0 | 58.4 | 60.7 | 62.4 | 64.8 | 66.6 | 66.7 | 67.0 | 64.1 | 59.2 | 55.4 | 61.5 |
| Highest Mean Max. Temperature (F) | 62.1 | 62.0 | 63.9 | 65.0 | 68.3 | 68.5 | 70.7 | 71.7 | 71.8 | 68.5 | 64.8 | 59.9 | 71.8 |
| Year Highest Occurred | 1986 | 1988 | 1988 | 1992 | 1992 | 1990 | 1993 | 1994 | 1990 | 1992 | 1976 | 1986 | 1990 |
| Lowest Mean Max. Temperature (F) | 52.0 | 52.1 | 53.7 | 57.3 | 58.4 | 61.3 | 63.5 | 62.5 | 63.0 | 61.2 | 53.3 | 50.0 | 50.0 |
| Year Lowest Occurred | 1993 | 1999 | 1999 | 1999 | 1999 | 1996 | 1999 | 1980 | 1996 | 2000 | 1994 | 1990 | 1990 |
| Mean Temperature (F) | 48.4 | 49.3 | 50.3 | 52.0 | 53.9 | 56.4 | 58.1 | 58.4 | 58.2 | 55.3 | 51.2 | 47.7 | 53.3 |
| Highest Mean Temperature (F) | 53.9 | 53.2 | 54.7 | 55.9 | 58.2 | 58.5 | 61.5 | 61.5 | 61.5 | 59.2 | 55.6 | 51.5 | 61.5 |
| Year Highest Occurred | 1986 | 1980 | 1978 | 1992 | 1992 | 1986 | 1992 | 1993 | 1979 | 1992 | 1976 | 1981 | 1992 |
| Lowest Mean Temperature (F) | 44.4 | 43.8 | 45.9 | 48.5 | 50.8 | 53.2 | 55.6 | 55.4 | 54.7 | 52.1 | 46.2 | 40.1 | 40.1 |
| Year Lowest Occurred | 1989 | 1989 | 1999 | 1975 | 1999 | 1996 | 1999 | 1973 | 1996 | 1971 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 40.8 | 41.5 | 42.1 | 43.2 | 45.4 | 48.0 | 49.5 | 50.0 | 49.3 | 46.4 | 43.1 | 39.9 | 44.9 |
| Highest Mean Min. Temperature (F) | 47.3 | 46.8 | 47.5 | 46.8 | 49.3 | 51.4 | 52.5 | 54.0 | 54.1 | 51.4 | 48.2 | 45.9 | 54.1 |
| Year Highest Occurred | 1995 | 1980 | 1978 | 1992 | 1993 | 1983 | 1983 | 1983 | 1983 | 1983 | 1981 | 1983 | 1983 |
| Lowest Mean Min. Temperature (F) | 35.4 | 35.1 | 38.1 | 38.9 | 43.2 | 45.0 | 45.3 | 46.6 | 45.6 | 42.4 | 36.9 | 30.2 | 30.2 |
| Year Lowest Occurred | 1991 | 1989 | 1999 | 1975 | 1999 | 1996 | 1989 | 1989 | 1989 | 1971 | 1990 | 1990 | 1990 |
| Mean Precipitation (in.) | 7.32 | 6.78 | 6.48 | 2.86 | 1.59 | 0.42 | 0.14 | 0.34 | 0.74 | 2.57 | 5.42 | 6.34 | 41.00 |
| Highest Precipitation (in.) | 21.50 | 16.83 | 14.60 | 6.23 | 9.46 | 1.82 | 0.85 | 3.00 | 3.09 | 6.96 | 13.64 | 18.72 | 21.50 |
| Year Highest Occurred | 1998 | 1998 | 1983 | 1978 | 1990 | 1992 | 1974 | 1983 | 1977 | 1989 | 1984 | 1996 | 1998 |
| Lowest Precipitation (in.) | 0.55 | 0.77 | 1.54 | 0.24 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.04 | 0.98 | 0.32 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1988 | 1985 | 1992 | 1996 | 1997 | 1995 | 1995 | 1978 | 1990 | 1989 | 1992 |
| Heating Degree Days (F) | 516. | 445. | 442. | 392. | 346. | 258. | 217. | 210. | 207. | 302. | 416. | 538. | 4289. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 1. | 3. | 2. | 0. | 0. | 0. | 6. |