| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 41.5 | 41.3 | 42.6 | 46.6 | 53.6 | 59.5 | 67.7 | 68.5 | 63.6 | 54.5 | 43.9 | 40.6 | 52.1 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 36.4 | 35.9 | 36.8 | 39.7 | 45.8 | 51.2 | 58.4 | 59.2 | 55.4 | 47.5 | 38.7 | 35.2 | 45.1 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 31.2 | 30.4 | 31.0 | 32.8 | 38.0 | 42.9 | 49.1 | 49.9 | 47.1 | 40.5 | 33.6 | 29.8 | 38.1 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 18.75 | 14.25 | 14.42 | 8.73 | 5.20 | 3.84 | 0.90 | 1.38 | 3.52 | 9.61 | 19.58 | 22.10 | 122.28 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 888. | 816. | 874. | 759. | 598. | 422. | 235. | 215. | 307. | 545. | 787. | 924. | 7370. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 3. | 8. | 30. | 35. | 17. | 3. | 0. | 0. | 95. |