| | Perryville, MD | Fallston, MD | United States |
| Rainfall | 46.2 | 46.7 | 38.1 |
| Snowfall | 15 | 23.1 | 27.8 |
| Precipitation Days | 116.9 | 119.1 | 106.2 |
| Sunny | 199 | 213 | 205 |
| Avg. July High | 88 | 87.4 | 85.8 |
| Avg. Jan. Low | 23.9 | 24.9 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
| UV Index | 4 | 3.9 | 4.3 |
| Elevation ft. | 46 | 443 | 2443 |