| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 44.2 | 48.1 | 55.0 | 60.5 | 67.3 | 72.7 | 79.7 | 80.4 | 74.9 | 63.5 | 51.4 | 43.0 | 61.8 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 39.6 | 42.0 | 47.0 | 51.5 | 57.5 | 62.8 | 68.5 | 68.9 | 63.9 | 55.2 | 45.9 | 38.7 | 53.5 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 35.0 | 35.8 | 39.0 | 42.5 | 47.6 | 52.9 | 57.2 | 57.3 | 53.0 | 46.8 | 40.4 | 34.5 | 45.2 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 10.96 | 8.79 | 8.11 | 6.14 | 4.07 | 3.30 | 0.92 | 1.10 | 2.69 | 6.27 | 12.64 | 12.53 | 77.52 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 787. | 645. | 558. | 406. | 249. | 110. | 24. | 17. | 87. | 310. | 573. | 814. | 4582. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 15. | 44. | 131. | 137. | 56. | 4. | 0. | 0. | 388. |