| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 34.4 | 34.8 | 37.3 | 41.8 | 49.2 | 57.9 | 68.7 | 69.7 | 63.1 | 52.0 | 38.0 | 33.6 | 48.4 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 26.4 | 26.3 | 28.3 | 32.2 | 38.8 | 45.6 | 54.6 | 55.1 | 49.6 | 41.0 | 30.0 | 25.8 | 37.9 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 18.4 | 17.8 | 19.4 | 22.6 | 28.4 | 33.2 | 40.5 | 40.5 | 36.1 | 30.0 | 22.0 | 18.1 | 27.3 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 9.41 | 7.72 | 7.53 | 5.46 | 3.57 | 2.28 | 1.03 | 1.00 | 1.98 | 4.42 | 10.25 | 11.56 | 66.21 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 1197. | 1084. | 1136. | 984. | 812. | 584. | 326. | 311. | 462. | 744. | 1050. | 1214. | 9903. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 3. | 4. | 0. | 0. | 0. | 0. | 8. |