| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 48.4 | 50.9 | 55.5 | 60.4 | 66.4 | 71.5 | 77.0 | 77.0 | 71.3 | 61.3 | 52.6 | 46.9 | 61.7 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 42.8 | 43.9 | 47.7 | 51.8 | 57.3 | 62.0 | 66.6 | 66.4 | 61.5 | 53.7 | 46.5 | 41.4 | 53.5 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 37.1 | 36.9 | 39.8 | 43.2 | 48.2 | 52.6 | 56.1 | 55.7 | 51.6 | 46.0 | 40.4 | 35.8 | 45.3 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 5.93 | 3.86 | 4.06 | 3.00 | 2.11 | 1.57 | 0.68 | 0.82 | 1.29 | 3.70 | 6.68 | 5.52 | 39.22 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 690. | 591. | 538. | 396. | 245. | 111. | 27. | 28. | 121. | 352. | 555. | 733. | 4386. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 23. | 75. | 70. | 15. | 0. | 0. | 0. | 188. |