| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.4 | 34.0 | 41.1 | 50.3 | 60.7 | 71.9 | 78.4 | 76.8 | 68.2 | 56.2 | 39.9 | 31.9 | 53.3 |
| Highest Mean Max. Temperature (F) | 42.3 | 41.5 | 47.5 | 57.2 | 66.9 | 79.4 | 82.5 | 80.1 | 74.8 | 61.4 | 51.0 | 44.0 | 82.5 |
| Year Highest Occurred | 1981 | 1991 | 1999 | 1992 | 1994 | 1977 | 2000 | 1996 | 1998 | 1999 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 21.7 | 26.4 | 34.7 | 41.6 | 53.5 | 66.1 | 73.8 | 74.1 | 61.3 | 47.2 | 33.3 | 26.3 | 21.7 |
| Year Lowest Occurred | 1979 | 1973 | 1988 | 1984 | 1995 | 1998 | 1992 | 1993 | 1985 | 1984 | 1992 | 1978 | 1979 |
| Mean Temperature (F) | 17.0 | 20.0 | 27.5 | 35.5 | 44.7 | 54.3 | 59.5 | 57.7 | 49.8 | 39.3 | 26.3 | 18.5 | 37.5 |
| Highest Mean Temperature (F) | 22.9 | 27.5 | 33.0 | 41.4 | 49.4 | 60.0 | 62.7 | 61.5 | 55.0 | 43.2 | 33.6 | 29.2 | 62.7 |
| Year Highest Occurred | 2000 | 1995 | 1972 | 1992 | 2000 | 1977 | 1998 | 1983 | 1998 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 8.5 | 10.3 | 20.3 | 28.0 | 40.5 | 50.4 | 55.5 | 54.7 | 45.7 | 34.3 | 17.9 | 12.5 | 8.5 |
| Year Lowest Occurred | 1979 | 1973 | 1988 | 1984 | 1983 | 1998 | 1993 | 1974 | 1985 | 1984 | 1979 | 1978 | 1979 |
| Mean Min. Temperature (F) | 3.6 | 5.9 | 13.9 | 20.6 | 28.6 | 36.7 | 40.6 | 38.6 | 31.4 | 22.3 | 12.7 | 5.0 | 21.7 |
| Highest Mean Min. Temperature (F) | 12.4 | 15.3 | 20.8 | 25.5 | 32.7 | 40.9 | 44.3 | 43.4 | 36.8 | 27.4 | 21.5 | 14.5 | 44.3 |
| Year Highest Occurred | 1971 | 2000 | 1974 | 1992 | 2000 | 1972 | 1998 | 1983 | 1997 | 1972 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -5.1 | -5.8 | 5.9 | 14.5 | 25.8 | 33.1 | 35.6 | 33.6 | 26.0 | 17.0 | 2.3 | -1.2 | -5.8 |
| Year Lowest Occurred | 1985 | 1973 | 1988 | 1984 | 1972 | 1982 | 1993 | 1974 | 1974 | 1976 | 1979 | 1990 | 1973 |
| Mean Precipitation (in.) | 0.62 | 0.61 | 0.82 | 1.07 | 1.51 | 1.06 | 1.28 | 1.05 | 1.21 | 0.89 | 0.83 | 0.59 | 11.54 |
| Highest Precipitation (in.) | 2.26 | 1.76 | 1.47 | 2.35 | 5.46 | 2.53 | 2.80 | 2.42 | 4.23 | 2.44 | 2.68 | 1.64 | 5.46 |
| Year Highest Occurred | 1980 | 1986 | 1985 | 1985 | 1995 | 1998 | 1985 | 1977 | 1997 | 1985 | 1985 | 1978 | 1995 |
| Lowest Precipitation (in.) | 0.05 | 0.03 | 0.13 | 0.34 | 0.05 | 0.04 | 0.29 | 0.28 | 0.19 | 0.06 | 0.09 | 0.08 | 0.03 |
| Year Lowest Occurred | 1986 | 1973 | 1997 | 1981 | 1974 | 1980 | 1993 | 1974 | 1979 | 2000 | 1974 | 1976 | 1973 |
| Heating Degree Days (F) | 1488. | 1261. | 1163. | 887. | 630. | 323. | 176. | 229. | 456. | 798. | 1162. | 1443. | 10016. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 2. | 5. | 4. | 0. | 0. | 0. | 0. | 11. |