| | Clemson, SC | Pasadena, MD | United States |
| Rainfall | 51.5 | 43.2 | 38.1 |
| Snowfall | 1.8 | 13.8 | 27.8 |
| Precipitation Days | 108.2 | 115.7 | 106.2 |
| Sunny | 222 | 212 | 205 |
| Avg. July High | 89.9 | 87.8 | 85.8 |
| Avg. Jan. Low | 30.9 | 27.7 | 21.7 |
| Comfort Index (higher=better) | 7.5 | 7.3 | 7 |
| UV Index | 4.4 | 4 | 4.3 |
| Elevation ft. | 725 | 82 | 2443 |