| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 50.7 | 55.0 | 60.3 | 65.1 | 72.0 | 78.3 | 86.6 | 87.0 | 81.5 | 68.8 | 55.6 | 48.8 | 67.5 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 43.3 | 45.6 | 49.3 | 53.1 | 59.0 | 64.7 | 71.0 | 71.0 | 65.6 | 56.4 | 47.9 | 42.4 | 55.8 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 36.0 | 36.3 | 38.4 | 41.2 | 46.0 | 51.2 | 55.5 | 55.0 | 49.6 | 43.9 | 40.2 | 35.9 | 44.1 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 4.97 | 3.75 | 3.53 | 2.77 | 2.12 | 0.97 | 0.39 | 0.43 | 0.90 | 2.25 | 5.44 | 6.18 | 33.70 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 671. | 542. | 485. | 358. | 213. | 78. | 13. | 9. | 68. | 276. | 513. | 702. | 3926. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 27. | 70. | 200. | 194. | 84. | 7. | 0. | 0. | 586. |