| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 38.3 | 42.8 | 50.4 | 57.4 | 65.2 | 71.3 | 80.0 | 80.9 | 73.7 | 60.1 | 45.8 | 36.9 | 58.6 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 33.3 | 35.7 | 40.9 | 46.0 | 52.8 | 58.3 | 64.3 | 64.3 | 58.1 | 48.3 | 39.4 | 32.5 | 47.9 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 28.4 | 28.5 | 31.4 | 34.6 | 40.4 | 45.3 | 48.6 | 47.8 | 42.5 | 36.4 | 32.9 | 28.2 | 37.1 |
| 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) | 981. | 822. | 747. | 570. | 383. | 220. | 94. | 87. | 219. | 519. | 770. | 1006. | 6417. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 5. | 19. | 72. | 66. | 12. | 0. | 0. | 0. | 174. |