| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 53.7 | 54.4 | 54.9 | 56.5 | 59.8 | 63.1 | 66.5 | 67.5 | 66.5 | 62.1 | 56.3 | 53.4 | 59.6 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 47.2 | 47.6 | 48.3 | 49.8 | 53.3 | 56.7 | 59.7 | 60.2 | 58.5 | 54.4 | 49.7 | 46.7 | 52.7 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 40.7 | 40.8 | 41.8 | 43.2 | 46.8 | 50.3 | 52.9 | 52.9 | 50.6 | 46.7 | 43.1 | 40.0 | 45.8 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 11.64 | 8.58 | 9.25 | 6.11 | 3.75 | 2.22 | 0.54 | 0.75 | 1.60 | 4.94 | 10.60 | 12.63 | 72.61 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 552. | 487. | 516. | 454. | 363. | 249. | 165. | 150. | 196. | 330. | 459. | 567. | 4489. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 1. | 1. | 2. | 1. | 0. | 0. | 6. |