| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 48.7 | 50.4 | 52.7 | 54.9 | 58.5 | 61.5 | 64.7 | 65.9 | 65.6 | 59.5 | 52.1 | 47.8 | 56.9 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 43.0 | 43.5 | 45.6 | 48.0 | 52.0 | 55.5 | 58.5 | 58.9 | 56.9 | 51.3 | 45.9 | 42.0 | 50.1 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 37.2 | 36.6 | 38.6 | 41.0 | 45.6 | 49.5 | 52.4 | 52.0 | 48.1 | 43.1 | 39.6 | 36.1 | 43.4 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 11.79 | 8.40 | 8.64 | 6.26 | 3.81 | 2.94 | 1.44 | 1.66 | 2.58 | 7.20 | 12.26 | 11.67 | 78.65 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 684. | 602. | 600. | 512. | 402. | 285. | 201. | 190. | 248. | 425. | 574. | 714. | 5436. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 1. | 2. | 3. | 0. | 0. | 0. | 7. |