| | Riverdale, GA | Hiram, GA | United States |
| Rainfall | 49.5 | 53.9 | 38.1 |
| Snowfall | 1.5 | 2 | 27.8 |
| Precipitation Days | 108.4 | 110.2 | 106.2 |
| Sunny | 214 | 218 | 205 |
| Avg. July High | 89.5 | 87.8 | 85.8 |
| Avg. Jan. Low | 32.6 | 30.7 | 21.7 |
| Comfort Index (higher=better) | 7.5 | 7.6 | 7 |
| UV Index | 5.1 | 5.1 | 4.3 |
| Elevation ft. | 922 | 965 | 2443 |