| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 41.9 | 46.1 | 52.3 | 57.7 | 64.2 | 69.5 | 77.6 | 78.7 | 73.3 | 60.3 | 47.5 | 40.7 | 59.2 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 36.8 | 39.1 | 43.6 | 47.7 | 53.4 | 58.5 | 64.4 | 64.7 | 59.8 | 50.6 | 41.7 | 35.9 | 49.7 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 31.7 | 32.1 | 34.9 | 37.8 | 42.6 | 47.6 | 51.2 | 50.7 | 46.3 | 40.9 | 35.8 | 31.1 | 40.3 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 9.57 | 7.80 | 7.40 | 5.87 | 4.56 | 3.34 | 0.94 | 0.84 | 2.41 | 5.67 | 11.03 | 11.09 | 70.52 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 874. | 725. | 663. | 518. | 365. | 211. | 80. | 73. | 177. | 447. | 700. | 902. | 5736. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 18. | 61. | 64. | 21. | 1. | 0. | 0. | 170. |