| | Fairland, MD | Calverton, MD | United States |
| Rainfall | 44.2 | 44.2 | 38.1 |
| Snowfall | 14.5 | 14 | 27.8 |
| Precipitation Days | 109.6 | 108.5 | 106.2 |
| Sunny | 200 | 204 | 205 |
| Avg. July High | 88.1 | 88.2 | 85.8 |
| Avg. Jan. Low | 24.6 | 24.9 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
| UV Index | 4.1 | 4.1 | 4.3 |
| Elevation ft. | 413 | 276 | 2443 |