| | Lanham, MD | Crofton, MD | United States |
| Rainfall | 43.4 | 44.6 | 38.1 |
| Snowfall | 14.8 | 13.8 | 27.8 |
| Precipitation Days | 108.5 | 112.2 | 106.2 |
| Sunny | 203 | 212 | 205 |
| Avg. July High | 87.9 | 88 | 85.8 |
| Avg. Jan. Low | 24.1 | 25.3 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.4 | 7 |
| UV Index | 4.3 | 4 | 4.3 |
| Elevation ft. | 151 | 102 | 2443 |