| | James Island, SC | Parole, MD | United States |
| Rainfall | 48.2 | 45.3 | 38.1 |
| Snowfall | 0.4 | 12 | 27.8 |
| Precipitation Days | 105.6 | 110.1 | 106.2 |
| Sunny | 211 | 213 | 205 |
| Avg. July High | 89.8 | 87.1 | 85.8 |
| Avg. Jan. Low | 39.3 | 28.4 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7.4 | 7 |
| UV Index | 5.1 | 4 | 4.3 |
| Elevation ft. | 12 | 66 | 2443 |