| | Greencastle, PA | Smithsburg, MD | United States |
| Rainfall | 41 | 42 | 38 |
| Snowfall | 29 | 29 | 28 |
| Precipitation | 119 | 116 | 106 |
| Sunny | 197 | 196 | 205 |
| Avg. July High | 85 | 86 | 86 |
| Avg. Jan. Low | 22 | 23 | 22 |
| Comfort Index (higher=better) | 7.2 | 7.3 | 7 |
| UV Index | 3.9 | 3.9 | 4.3 |
| Elevation | 584 | 771 | 2443 |