| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 40.1 | 40.2 | 44.4 | 50.4 | 60.3 | 69.4 | 77.7 | 76.8 | 69.5 | 59.3 | 47.4 | 41.1 | 56.5 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 27.5 | 27.9 | 32.4 | 38.0 | 46.7 | 54.7 | 61.5 | 60.8 | 53.5 | 44.0 | 34.4 | 28.8 | 42.6 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 14.8 | 15.6 | 20.4 | 25.6 | 33.1 | 40.0 | 45.3 | 44.8 | 37.5 | 28.7 | 21.4 | 16.5 | 28.7 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | |||||||||||||
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 1164. | 1039. | 1011. | 810. | 567. | 310. | 124. | 142. | 346. | 651. | 918. | 1122. | 8204. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 1. | 16. | 12. | 1. | 0. | 0. | 0. | 29. |