| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.1 | 36.0 | 42.7 | 50.0 | 60.5 | 69.7 | 78.4 | 78.4 | 68.2 | 56.2 | 38.6 | 30.2 | 53.3 |
| Highest Mean Max. Temperature (F) | 38.8 | 44.3 | 51.7 | 60.8 | 69.3 | 79.5 | 84.9 | 85.0 | 77.4 | 65.8 | 49.3 | 39.1 | 85.0 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1993 | 1988 | 1988 | 1971 | 1990 | 1987 | 1999 | 1980 | 1971 |
| Lowest Mean Max. Temperature (F) | 16.7 | 26.3 | 36.4 | 38.0 | 54.5 | 60.8 | 66.3 | 72.1 | 58.8 | 48.6 | 29.1 | 18.3 | 16.7 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1996 | 1998 | 1993 | 1993 | 1985 | 1984 | 1993 | 1983 | 1979 |
| Mean Temperature (F) | 18.1 | 22.1 | 28.7 | 35.8 | 44.8 | 52.6 | 59.0 | 58.3 | 49.9 | 40.1 | 26.2 | 18.5 | 37.8 |
| Highest Mean Temperature (F) | 25.8 | 29.6 | 36.5 | 41.9 | 49.5 | 59.7 | 62.8 | 63.0 | 55.5 | 46.2 | 34.9 | 27.0 | 63.0 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1987 | 1993 | 1988 | 1989 | 1971 | 1998 | 1988 | 1999 | 1980 | 1971 |
| Lowest Mean Temperature (F) | 3.9 | 12.4 | 21.2 | 27.0 | 41.1 | 47.1 | 50.1 | 53.3 | 44.4 | 34.7 | 16.0 | 7.0 | 3.9 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1996 | 1998 | 1993 | 1993 | 1985 | 1984 | 1993 | 1983 | 1979 |
| Mean Min. Temperature (F) | 6.0 | 8.2 | 14.7 | 21.6 | 29.1 | 35.5 | 39.6 | 38.2 | 31.6 | 24.0 | 13.7 | 6.7 | 22.4 |
| Highest Mean Min. Temperature (F) | 14.7 | 16.4 | 22.0 | 26.1 | 32.7 | 39.8 | 42.9 | 42.3 | 36.8 | 27.8 | 20.5 | 14.9 | 42.9 |
| Year Highest Occurred | 1994 | 1986 | 1986 | 1990 | 1987 | 1988 | 1975 | 1983 | 1998 | 1992 | 1999 | 1980 | 1975 |
| Lowest Mean Min. Temperature (F) | -9.0 | -1.5 | 5.9 | 15.9 | 26.2 | 32.5 | 33.8 | 34.4 | 29.0 | 20.2 | 2.8 | -5.5 | -9.0 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1982 | 1984 | 1993 | 1975 | 1984 | 1987 | 1993 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.59 | 1.20 | 1.26 | 1.11 | 2.65 | 3.03 | 1.43 | 1.56 | 1.88 | 1.55 | 1.67 | 1.54 | 20.47 |
| Highest Precipitation (in.) | 3.25 | 2.70 | 2.25 | 2.87 | 5.71 | 6.97 | 4.05 | 4.07 | 3.61 | 3.19 | 3.24 | 4.78 | 6.97 |
| Year Highest Occurred | 1997 | 1999 | 1982 | 1991 | 1981 | 1992 | 1987 | 1984 | 1980 | 1975 | 1991 | 1996 | 1992 |
| Lowest Precipitation (in.) | 0.53 | 0.24 | 0.70 | 0.25 | 0.73 | 0.72 | 0.29 | 0.24 | 0.00 | 0.00 | 0.35 | 0.20 | 0.00 |
| Year Lowest Occurred | 1981 | 1990 | 1986 | 1985 | 1984 | 1988 | 1999 | 2000 | 1993 | 1987 | 1976 | 1986 | 1993 |
| Heating Degree Days (F) | 1455. | 1201. | 1125. | 876. | 627. | 376. | 205. | 223. | 453. | 773. | 1167. | 1442. | 9923. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 3. | 20. | 14. | 1. | 0. | 0. | 0. | 38. |