| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 47.3 | 50.6 | 54.5 | 59.2 | 64.4 | 68.8 | 75.0 | 75.0 | 69.7 | 59.0 | 49.8 | 44.0 | 59.8 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 41.4 | 43.3 | 46.3 | 49.7 | 54.0 | 58.3 | 62.8 | 62.8 | 58.3 | 51.3 | 44.4 | 39.2 | 51.0 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 35.6 | 35.9 | 38.0 | 40.2 | 43.5 | 47.8 | 50.6 | 50.6 | 46.8 | 43.5 | 39.0 | 34.3 | 42.2 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 14.11 | 10.99 | 10.02 | 6.98 | 4.18 | 2.77 | 0.65 | 1.01 | 2.51 | 6.19 | 14.51 | 15.83 | 89.75 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 730. | 609. | 581. | 459. | 344. | 205. | 99. | 92. | 207. | 426. | 618. | 801. | 5171. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 4. | 31. | 24. | 4. | 0. | 0. | 0. | 64. |