| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 45.1 | 49.2 | 53.6 | 58.1 | 63.9 | 68.9 | 75.6 | 76.7 | 72.3 | 61.1 | 50.0 | 43.4 | 59.9 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 38.0 | 39.7 | 43.4 | 46.8 | 51.9 | 56.5 | 61.2 | 61.5 | 57.1 | 49.2 | 41.9 | 36.8 | 48.7 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 30.9 | 30.1 | 33.3 | 35.4 | 39.8 | 44.0 | 46.7 | 46.3 | 42.0 | 37.3 | 33.9 | 30.1 | 37.5 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 7.30 | 5.17 | 5.06 | 3.79 | 2.53 | 1.67 | 0.52 | 0.69 | 1.68 | 3.79 | 7.97 | 8.03 | 48.20 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 837. | 710. | 668. | 547. | 410. | 262. | 144. | 132. | 240. | 490. | 691. | 876. | 6007. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 6. | 24. | 23. | 5. | 0. | 0. | 0. | 61. |