| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 54.0 | 58.8 | 62.9 | 66.5 | 70.7 | 75.8 | 79.6 | 79.7 | 78.7 | 72.7 | 62.4 | 54.3 | 68.1 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 47.9 | 51.3 | 54.1 | 56.9 | 60.4 | 64.6 | 67.2 | 67.4 | 66.5 | 61.9 | 54.2 | 48.1 | 58.4 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 41.8 | 43.8 | 45.3 | 47.3 | 50.1 | 53.4 | 54.9 | 55.2 | 54.2 | 51.0 | 45.9 | 41.8 | 48.8 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 6.95 | 7.10 | 4.59 | 1.91 | 0.89 | 0.14 | 0.00 | 0.05 | 0.21 | 1.49 | 4.31 | 7.59 | 35.23 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 530. | 384. | 339. | 250. | 168. | 72. | 26. | 20. | 37. | 125. | 326. | 525. | 2803. |
| Cooling Degree Days (F) | 0. | 0. | 1. | 7. | 26. | 60. | 96. | 96. | 81. | 27. | 1. | 0. | 395. |