| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 12.1 | 20.6 | 33.6 | 53.1 | 69.5 | 76.7 | 81.0 | 79.7 | 68.0 | 54.0 | 31.6 | 17.5 | 49.8 |
| Highest Mean Max. Temperature (F) | 25.9 | 32.4 | 46.6 | 64.5 | 81.6 | 86.2 | 86.4 | 86.1 | 75.6 | 60.4 | 44.6 | 27.8 | 86.4 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1980 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1997 | 1988 |
| Lowest Mean Max. Temperature (F) | 0.9 | 7.3 | 22.9 | 42.3 | 56.1 | 70.4 | 73.2 | 73.5 | 60.3 | 49.6 | 22.0 | 6.0 | 0.9 |
| Year Lowest Occurred | 1994 | 1989 | 1996 | 1975 | 1974 | 1985 | 1992 | 1985 | 1985 | 1991 | 1996 | 1983 | 1994 |
| Mean Temperature (F) | 3.3 | 11.2 | 24.4 | 41.5 | 56.1 | 64.4 | 68.6 | 67.2 | 56.4 | 43.7 | 24.4 | 9.3 | 39.2 |
| Highest Mean Temperature (F) | 16.7 | 27.2 | 36.1 | 49.9 | 67.2 | 72.4 | 73.4 | 72.8 | 62.6 | 48.5 | 35.4 | 21.7 | 73.4 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1980 | 1977 | 1988 | 1989 | 1983 | 1978 | 1973 | 1981 | 1997 | 1989 |
| Lowest Mean Temperature (F) | -8.0 | -2.5 | 12.9 | 33.2 | 46.4 | 58.1 | 61.9 | 61.1 | 51.9 | 38.8 | 14.6 | -1.2 | -8.0 |
| Year Lowest Occurred | 1982 | 1989 | 1974 | 1996 | 1974 | 1985 | 1992 | 1977 | 1985 | 1976 | 1996 | 1983 | 1982 |
| Mean Min. Temperature (F) | -5.6 | 1.8 | 15.2 | 29.8 | 42.7 | 52.1 | 56.2 | 54.6 | 44.8 | 33.3 | 17.2 | 1.0 | 28.6 |
| Highest Mean Min. Temperature (F) | 7.5 | 21.9 | 25.6 | 35.2 | 52.8 | 58.6 | 60.9 | 59.5 | 50.7 | 40.0 | 27.1 | 15.6 | 60.9 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1980 | 1977 | 1995 | 1983 | 1983 | 1978 | 1994 | 1981 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -18.9 | -12.4 | 2.6 | 23.7 | 36.6 | 45.7 | 50.1 | 47.0 | 38.9 | 26.0 | 7.2 | -9.8 | -18.9 |
| Year Lowest Occurred | 1982 | 1989 | 1974 | 1996 | 1983 | 1985 | 1971 | 1977 | 1974 | 1976 | 1996 | 1976 | 1982 |
| Mean Precipitation (in.) | 0.22 | 0.28 | 0.44 | 0.96 | 2.59 | 3.39 | 3.43 | 3.14 | 2.44 | 1.68 | 0.86 | 0.26 | 19.69 |
| Highest Precipitation (in.) | 1.30 | 1.22 | 1.52 | 4.24 | 7.02 | 7.33 | 6.92 | 7.70 | 6.42 | 6.06 | 2.50 | 1.48 | 7.70 |
| Year Highest Occurred | 1974 | 1979 | 1994 | 1979 | 1977 | 1981 | 1975 | 1983 | 1973 | 1982 | 2000 | 1972 | 1983 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.12 | 1.08 | 0.77 | 0.40 | 0.26 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1999 | 2000 | 1999 | 1988 | 1980 | 1988 | 1984 | 1990 | 1984 | 1992 | 1997 | 2000 | 1999 |
| Heating Degree Days (F) | 1915. | 1507. | 1260. | 710. | 318. | 115. | 45. | 65. | 277. | 662. | 1218. | 1730. | 9822. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 43. | 96. | 158. | 131. | 18. | 0. | 0. | 0. | 448. |