| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 55.0 | 56.0 | 56.9 | 58.4 | 61.8 | 64.9 | 67.5 | 68.1 | 67.4 | 63.6 | 57.7 | 54.3 | 61.0 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 47.2 | 47.6 | 48.7 | 50.2 | 53.6 | 57.0 | 59.6 | 59.7 | 57.9 | 54.2 | 49.9 | 46.6 | 52.7 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 39.4 | 39.2 | 40.5 | 41.9 | 45.4 | 49.2 | 51.7 | 51.3 | 48.5 | 44.8 | 42.0 | 38.8 | 44.4 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 9.46 | 7.23 | 7.01 | 4.51 | 3.22 | 1.77 | 0.39 | 0.61 | 1.32 | 3.99 | 8.88 | 10.32 | 58.71 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 552. | 487. | 505. | 445. | 353. | 239. | 168. | 165. | 213. | 336. | 455. | 572. | 4490. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 1. | 1. | 1. | 1. | 0. | 0. | 4. |