| | Ladson, SC | Brandywine, MD | United States |
| Rainfall | 51.3 | 43.8 | 38.1 |
| Snowfall | 0.7 | 15.5 | 27.8 |
| Precipitation Days | 104 | 107.4 | 106.2 |
| Sunny | 209 | 207 | 205 |
| Avg. July High | 91.5 | 87.6 | 85.8 |
| Avg. Jan. Low | 34.6 | 25.5 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7.4 | 7 |
| UV Index | 4.7 | 4.3 | 4.3 |
| Elevation ft. | 46 | 233 | 2443 |