| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 25.2 | 31.6 | 43.8 | 58.8 | 71.0 | 80.6 | 85.6 | 83.2 | 74.2 | 61.1 | 41.9 | 28.8 | 57.2 |
| Highest Mean Max. Temperature (F) | 39.5 | 44.5 | 53.8 | 68.4 | 78.1 | 90.0 | 94.4 | 91.0 | 80.3 | 67.7 | 56.7 | 37.5 | 94.4 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1975 | 1973 | 1990 | 1975 | 1999 | 1999 | 1975 |
| Lowest Mean Max. Temperature (F) | 12.2 | 18.8 | 32.2 | 50.3 | 64.0 | 74.1 | 74.5 | 76.2 | 66.5 | 57.0 | 28.8 | 10.9 | 10.9 |
| Year Lowest Occurred | 1979 | 1978 | 1984 | 1975 | 1997 | 1998 | 1992 | 1992 | 1985 | 1972 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 14.0 | 20.8 | 32.6 | 45.7 | 57.8 | 67.5 | 73.0 | 70.8 | 60.9 | 48.0 | 31.3 | 18.3 | 45.1 |
| Highest Mean Temperature (F) | 27.3 | 31.9 | 39.4 | 52.7 | 65.6 | 75.3 | 78.5 | 77.2 | 66.3 | 52.4 | 42.1 | 26.4 | 78.5 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1977 | 1977 | 1988 | 1974 | 1983 | 1978 | 1973 | 1999 | 1979 | 1974 |
| Lowest Mean Temperature (F) | 1.1 | 6.8 | 23.1 | 39.9 | 51.5 | 61.6 | 64.6 | 65.2 | 56.1 | 43.1 | 19.6 | 0.9 | 0.9 |
| Year Lowest Occurred | 1979 | 1979 | 1984 | 1983 | 1997 | 1982 | 1992 | 1985 | 1993 | 1987 | 1985 | 1983 | 1983 |
| Mean Min. Temperature (F) | 2.9 | 10.1 | 21.3 | 32.5 | 44.6 | 54.5 | 60.3 | 58.4 | 47.6 | 34.8 | 20.7 | 7.8 | 33.0 |
| Highest Mean Min. Temperature (F) | 15.5 | 24.1 | 28.9 | 38.6 | 53.1 | 62.3 | 64.4 | 64.4 | 52.7 | 40.4 | 27.4 | 18.2 | 64.4 |
| Year Highest Occurred | 1992 | 1998 | 1973 | 1977 | 1977 | 1991 | 1999 | 1995 | 1978 | 2000 | 1999 | 1997 | 1999 |
| Lowest Mean Min. Temperature (F) | -11.0 | -5.3 | 13.1 | 28.4 | 38.6 | 46.9 | 54.6 | 52.9 | 40.0 | 28.8 | 10.3 | -9.1 | -11.0 |
| Year Lowest Occurred | 1978 | 1979 | 1975 | 1982 | 1976 | 1982 | 1971 | 1974 | 1974 | 1976 | 1985 | 1983 | 1978 |
| Mean Precipitation (in.) | 0.51 | 0.51 | 1.81 | 2.65 | 3.39 | 3.49 | 2.93 | 3.01 | 2.58 | 1.93 | 1.36 | 0.52 | 24.69 |
| Highest Precipitation (in.) | 1.54 | 1.76 | 4.08 | 5.83 | 8.26 | 8.43 | 8.41 | 9.09 | 9.26 | 6.28 | 2.95 | 1.99 | 9.26 |
| Year Highest Occurred | 1988 | 1992 | 1998 | 1995 | 1993 | 1984 | 1992 | 1975 | 1986 | 1998 | 1983 | 1982 | 1986 |
| Lowest Precipitation (in.) | 0.08 | 0.05 | 0.20 | 0.28 | 0.61 | 0.91 | 0.49 | 0.71 | 0.47 | 0.02 | 0.02 | 0.00 | 0.00 |
| Year Lowest Occurred | 1990 | 1986 | 1994 | 1987 | 1981 | 1988 | 1988 | 1971 | 1990 | 1988 | 1980 | 1986 | 1986 |
| Heating Degree Days (F) | 1566. | 1236. | 989. | 568. | 242. | 58. | 10. | 20. | 176. | 519. | 995. | 1433. | 7812. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 5. | 35. | 149. | 274. | 216. | 64. | 4. | 0. | 0. | 747. |