| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 21.3 | 28.4 | 40.2 | 56.8 | 70.9 | 80.0 | 84.1 | 81.2 | 73.0 | 60.4 | 40.4 | 25.7 | 55.2 |
| Highest Mean Max. Temperature (F) | 35.1 | 43.9 | 53.0 | 69.1 | 80.0 | 89.8 | 90.7 | 87.1 | 80.4 | 66.7 | 53.1 | 36.2 | 90.7 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1988 | 1988 | 1988 | 1988 | 1998 | 1975 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 8.5 | 16.6 | 30.3 | 43.6 | 62.7 | 73.7 | 75.4 | 74.5 | 65.7 | 56.4 | 31.1 | 9.6 | 8.5 |
| Year Lowest Occurred | 1979 | 1979 | 1975 | 1975 | 1997 | 1985 | 1992 | 1985 | 1993 | 1987 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 11.0 | 18.6 | 30.9 | 45.6 | 58.9 | 68.4 | 72.7 | 70.1 | 61.0 | 48.7 | 31.8 | 16.5 | 44.5 |
| Highest Mean Temperature (F) | 25.6 | 32.3 | 38.9 | 54.5 | 66.3 | 75.1 | 76.8 | 75.2 | 66.9 | 54.9 | 41.4 | 25.7 | 76.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1974 | 1983 | 1978 | 1973 | 1999 | 1997 | 1974 |
| Lowest Mean Temperature (F) | -2.0 | 4.8 | 19.6 | 37.0 | 52.7 | 63.2 | 65.5 | 64.6 | 55.4 | 43.7 | 23.4 | -0.4 | -2.0 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1997 | 1985 | 1992 | 1992 | 1993 | 1988 | 1985 | 1983 | 1977 |
| Mean Min. Temperature (F) | 0.7 | 8.7 | 21.6 | 34.4 | 46.9 | 56.8 | 61.3 | 58.9 | 48.9 | 37.0 | 23.1 | 7.3 | 33.8 |
| Highest Mean Min. Temperature (F) | 16.2 | 23.4 | 30.8 | 39.9 | 53.3 | 61.8 | 65.7 | 64.2 | 54.1 | 43.6 | 29.7 | 19.3 | 65.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1983 | 1983 | 1978 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -13.0 | -7.0 | 8.9 | 30.3 | 41.5 | 50.6 | 55.6 | 53.5 | 44.4 | 30.3 | 15.7 | -10.3 | -13.0 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1996 | 1979 | 1982 | 1992 | 1992 | 1974 | 1988 | 1976 | 1983 | 1977 |
| Mean Precipitation (in.) | 0.87 | 0.65 | 1.76 | 2.56 | 3.02 | 4.31 | 4.11 | 4.39 | 2.70 | 1.96 | 1.99 | 0.76 | 29.08 |
| Highest Precipitation (in.) | 3.91 | 2.66 | 3.90 | 8.00 | 6.26 | 9.20 | 8.60 | 9.80 | 8.40 | 4.75 | 5.42 | 2.15 | 9.80 |
| Year Highest Occurred | 1996 | 1971 | 1983 | 1986 | 1993 | 1971 | 1987 | 1979 | 1982 | 1984 | 2000 | 1982 | 1979 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.29 | 0.25 | 0.39 | 0.48 | 1.00 | 1.24 | 0.34 | 0.15 | 0.05 | 0.10 | 0.00 |
| Year Lowest Occurred | 1990 | 1999 | 1994 | 1987 | 1976 | 1988 | 1988 | 1998 | 2000 | 1989 | 1980 | 1986 | 1990 |
| Heating Degree Days (F) | 1675. | 1301. | 1057. | 586. | 239. | 46. | 13. | 27. | 158. | 507. | 998. | 1503. | 8110. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 4. | 50. | 149. | 252. | 183. | 37. | 1. | 0. | 0. | 676. |