| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 46.6 | 50.4 | 55.2 | 59.6 | 66.0 | 71.5 | 78.9 | 79.4 | 74.0 | 62.5 | 51.8 | 44.9 | 61.8 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 40.7 | 43.0 | 47.0 | 50.5 | 56.2 | 61.3 | 66.9 | 67.2 | 62.5 | 53.6 | 45.4 | 39.4 | 52.9 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 34.9 | 35.6 | 38.9 | 41.5 | 46.4 | 51.0 | 54.9 | 55.1 | 51.0 | 44.6 | 39.0 | 33.9 | 43.9 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 6.58 | 5.18 | 5.01 | 3.88 | 2.98 | 2.25 | 0.71 | 0.68 | 1.56 | 3.79 | 7.43 | 7.31 | 47.36 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 752. | 616. | 556. | 434. | 284. | 145. | 41. | 34. | 115. | 357. | 588. | 794. | 4716. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 12. | 33. | 100. | 104. | 40. | 2. | 0. | 0. | 290. |