| | Mechanicsville, MD | Elkton, MD | United States |
| Rainfall | 44.4 | 45.1 | 38.1 |
| Snowfall | 15.9 | 14.8 | 27.8 |
| Precipitation Days | 108.2 | 115.1 | 106.2 |
| Sunny | 203 | 200 | 205 |
| Avg. July High | 86 | 86.9 | 85.8 |
| Avg. Jan. Low | 26.1 | 23.9 | 21.7 |
| Comfort Index (higher=better) | 7.5 | 7.3 | 7 |
| UV Index | 4 | 4 | 4.3 |
| Elevation ft. | 157 | 26 | 2443 |