| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 48.1 | 50.8 | 53.3 | 56.1 | 60.0 | 63.6 | 67.2 | 68.3 | 67.5 | 61.0 | 53.1 | 48.4 | 58.1 |
| Highest Mean Max. Temperature (F) | 54.6 | 56.0 | 58.0 | 60.6 | 65.3 | 66.9 | 70.7 | 71.9 | 71.8 | 65.0 | 57.1 | 52.7 | 71.9 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1989 | 1997 | 1978 | 1972 | 1997 | 1989 | 1987 | 1997 | 1979 | 1997 |
| Lowest Mean Max. Temperature (F) | 41.3 | 43.7 | 48.7 | 52.4 | 56.1 | 60.1 | 64.3 | 63.9 | 63.6 | 56.0 | 44.7 | 42.1 | 41.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1991 | 1998 | 1993 | 1980 | 1986 | 1975 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 42.4 | 44.2 | 46.0 | 48.5 | 52.7 | 56.7 | 60.1 | 60.8 | 58.5 | 52.6 | 46.6 | 42.8 | 51.0 |
| Highest Mean Temperature (F) | 47.9 | 49.9 | 50.6 | 51.2 | 56.8 | 59.4 | 62.2 | 63.9 | 61.9 | 56.1 | 50.6 | 47.4 | 63.9 |
| Year Highest Occurred | 1981 | 1983 | 1983 | 2000 | 1997 | 1983 | 2000 | 1997 | 1997 | 2000 | 1995 | 1999 | 1997 |
| Lowest Mean Temperature (F) | 35.0 | 36.8 | 41.7 | 44.6 | 49.8 | 54.2 | 58.2 | 57.2 | 55.4 | 50.0 | 38.9 | 36.7 | 35.0 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1971 | 1986 | 1973 | 1986 | 1984 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 36.7 | 37.6 | 38.6 | 40.8 | 45.4 | 49.8 | 52.9 | 53.2 | 49.5 | 44.1 | 40.1 | 37.1 | 43.8 |
| Highest Mean Min. Temperature (F) | 41.5 | 44.3 | 43.6 | 44.0 | 49.0 | 52.4 | 55.6 | 55.8 | 53.9 | 48.3 | 44.6 | 42.1 | 55.8 |
| Year Highest Occurred | 1983 | 1983 | 1983 | 1996 | 1993 | 1983 | 2000 | 1997 | 1995 | 1988 | 1995 | 1999 | 1997 |
| Lowest Mean Min. Temperature (F) | 28.7 | 29.8 | 34.7 | 36.8 | 42.2 | 46.8 | 50.2 | 49.7 | 46.4 | 40.4 | 33.1 | 30.8 | 28.7 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1977 | 1988 | 1977 | 1973 | 1983 | 1983 | 1985 | 1985 | 1979 |
| Mean Precipitation (in.) | 9.62 | 7.87 | 7.37 | 4.93 | 3.28 | 2.57 | 1.16 | 1.21 | 2.61 | 5.61 | 10.50 | 10.40 | 67.13 |
| Highest Precipitation (in.) | 16.69 | 18.26 | 15.31 | 10.07 | 6.00 | 5.47 | 4.39 | 3.85 | 7.27 | 12.56 | 19.60 | 20.38 | 20.38 |
| Year Highest Occurred | 1971 | 1999 | 1997 | 1996 | 1977 | 1981 | 1983 | 1977 | 1997 | 1975 | 1998 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.69 | 1.35 | 1.19 | 1.65 | 0.37 | 0.55 | 0.05 | 0.14 | 0.04 | 0.52 | 1.45 | 2.67 | 0.04 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1977 | 1982 | 1992 | 1984 | 1986 | 1975 | 1987 | 1976 | 1985 | 1975 |
| Heating Degree Days (F) | 695. | 583. | 573. | 492. | 375. | 244. | 151. | 130. | 197. | 386. | 542. | 688. | 5056. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 2. | 4. | 7. | 7. | 1. | 0. | 0. | 22. |