| | Hancock, MD | Mercersburg, PA | United States |
| Rainfall | 39.4 | 41.1 | 38.1 |
| Snowfall | 21.3 | 28.5 | 27.8 |
| Precipitation Days | 114.7 | 115.7 | 106.2 |
| Sunny | 199 | 199 | 205 |
| Avg. July High | 86.4 | 85.4 | 85.8 |
| Avg. Jan. Low | 20.6 | 22.4 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.2 | 7 |
| UV Index | 3.9 | 3.9 | 4.3 |
| Elevation ft. | 443 | 584 | 2443 |