| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 48.3 | 52.4 | 58.0 | 63.3 | 69.3 | 74.9 | 82.2 | 82.8 | 77.8 | 65.5 | 53.7 | 47.3 | 64.7 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 42.7 | 44.7 | 49.2 | 53.2 | 58.8 | 64.0 | 69.4 | 69.0 | 64.0 | 55.0 | 47.1 | 41.9 | 55.0 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 37.2 | 37.1 | 40.4 | 43.0 | 48.2 | 53.2 | 56.5 | 55.2 | 50.2 | 44.4 | 40.6 | 36.5 | 45.3 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 5.71 | 4.10 | 3.67 | 2.56 | 2.04 | 1.52 | 0.47 | 0.70 | 1.26 | 2.76 | 5.87 | 6.63 | 37.29 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 690. | 567. | 490. | 358. | 217. | 87. | 20. | 19. | 87. | 315. | 536. | 716. | 4102. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 23. | 59. | 155. | 143. | 57. | 3. | 0. | 0. | 442. |