| | Marietta, OH | Chestertown, MD | United States |
| Rainfall | 42.1 | 45.1 | 38.1 |
| Snowfall | 20.3 | 13.9 | 27.8 |
| Precipitation Days | 145.3 | 112.8 | 106.2 |
| Sunny | 172 | 206 | 205 |
| Avg. July High | 84.8 | 87 | 85.8 |
| Avg. Jan. Low | 22.1 | 25.4 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 7.3 | 7 |
| UV Index | 4.3 | 3.8 | 4.3 |
| Elevation ft. | 614 | 13 | 2443 |