| | Chamblee, GA | Catonsville, MD | United States |
| Rainfall | 53.1 | 44.7 | 38.1 |
| Snowfall | 1.4 | 18 | 27.8 |
| Precipitation Days | 107.3 | 114.1 | 106.2 |
| Sunny | 213 | 209 | 205 |
| Avg. July High | 87.9 | 87 | 85.8 |
| Avg. Jan. Low | 32.1 | 24.1 | 21.7 |
| Comfort Index (higher=better) | 7.6 | 7.3 | 7 |
| UV Index | 5.2 | 4.1 | 4.3 |
| Elevation ft. | 1014 | 479 | 2443 |