| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 43.0 | 47.9 | 54.8 | 62.7 | 71.4 | 78.4 | 86.5 | 85.9 | 76.5 | 61.8 | 47.1 | 40.6 | 63.1 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 37.6 | 39.5 | 44.6 | 50.2 | 56.9 | 62.8 | 68.6 | 68.0 | 60.7 | 50.8 | 41.6 | 35.9 | 51.5 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 32.1 | 31.0 | 34.4 | 37.6 | 42.4 | 47.1 | 50.7 | 50.1 | 44.9 | 39.8 | 36.0 | 31.1 | 39.8 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 8.93 | 7.34 | 7.01 | 5.92 | 4.13 | 2.88 | 0.85 | 1.04 | 2.21 | 5.30 | 10.40 | 12.34 | 68.35 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 851. | 715. | 632. | 446. | 269. | 112. | 25. | 27. | 155. | 440. | 703. | 904. | 5281. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 18. | 44. | 137. | 120. | 26. | 0. | 0. | 0. | 346. |