| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.6 | 49.2 | 51.8 | 55.7 | 60.4 | 63.8 | 68.2 | 69.3 | 67.3 | 59.2 | 50.8 | 46.5 | 57.4 |
| Highest Mean Max. Temperature (F) | 53.9 | 54.3 | 58.1 | 60.7 | 64.9 | 69.2 | 72.2 | 73.3 | 74.0 | 65.6 | 55.3 | 49.9 | 74.0 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1989 | 1992 | 1978 | 1985 | 1972 | 1974 | 1987 | 1976 | 1976 | 1974 |
| Lowest Mean Max. Temperature (F) | 41.0 | 43.0 | 46.7 | 50.6 | 56.5 | 60.0 | 64.1 | 63.9 | 63.2 | 55.3 | 41.7 | 41.2 | 41.0 |
| Year Lowest Occurred | 1972 | 1989 | 1976 | 1972 | 1991 | 1971 | 1993 | 1980 | 1972 | 1990 | 1985 | 1990 | 1972 |
| Mean Temperature (F) | 40.6 | 42.2 | 43.8 | 46.7 | 51.2 | 54.9 | 58.6 | 59.3 | 56.5 | 50.1 | 44.2 | 40.6 | 49.1 |
| Highest Mean Temperature (F) | 45.5 | 46.0 | 48.0 | 50.5 | 54.9 | 58.2 | 60.6 | 60.9 | 60.1 | 53.2 | 48.2 | 44.8 | 60.9 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1989 | 1993 | 1978 | 1990 | 1996 | 1974 | 1988 | 1987 | 1979 | 1996 |
| Lowest Mean Temperature (F) | 35.5 | 35.3 | 39.3 | 42.5 | 47.9 | 52.0 | 56.5 | 54.9 | 52.2 | 47.7 | 35.4 | 35.7 | 35.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1974 | 1971 | 1977 | 1973 | 1972 | 1990 | 1985 | 1983 | 1989 |
| Mean Min. Temperature (F) | 34.6 | 35.1 | 35.7 | 37.6 | 41.9 | 46.0 | 49.0 | 49.2 | 45.7 | 40.9 | 37.5 | 34.6 | 40.7 |
| Highest Mean Min. Temperature (F) | 39.3 | 38.7 | 40.4 | 42.7 | 46.5 | 48.7 | 52.6 | 51.3 | 49.7 | 46.2 | 41.4 | 40.0 | 52.6 |
| Year Highest Occurred | 1986 | 1998 | 1986 | 1996 | 1993 | 1992 | 1998 | 1996 | 1995 | 1988 | 1983 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | 27.7 | 27.6 | 31.5 | 32.1 | 38.5 | 43.1 | 46.2 | 45.6 | 41.2 | 36.9 | 29.1 | 29.0 | 27.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1999 | 1999 | 1976 | 1977 | 1973 | 1972 | 1999 | 1985 | 1978 | 1989 |
| Mean Precipitation (in.) | 13.65 | 12.35 | 10.98 | 7.44 | 5.51 | 3.50 | 2.34 | 2.67 | 4.15 | 9.81 | 14.82 | 14.50 | 101.72 |
| Highest Precipitation (in.) | 23.99 | 26.20 | 21.86 | 13.90 | 12.45 | 8.83 | 11.02 | 15.07 | 12.82 | 27.17 | 29.14 | 27.82 | 29.14 |
| Year Highest Occurred | 1992 | 1999 | 1974 | 1992 | 1974 | 1997 | 1983 | 1991 | 1997 | 1975 | 1983 | 1979 | 1983 |
| Lowest Precipitation (in.) | 1.13 | 0.87 | 1.84 | 2.94 | 1.05 | 1.26 | 0.36 | 0.17 | 0.12 | 1.37 | 4.41 | 3.63 | 0.12 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1973 | 1972 | 1998 | 1985 | 1998 | 1991 | 1987 | 1976 | 1985 | 1991 |
| Heating Degree Days (F) | 758. | 646. | 642. | 548. | 421. | 296. | 193. | 174. | 250. | 460. | 626. | 762. | 5776. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 3. | 7. | 8. | 4. | 0. | 0. | 0. | 23. |