| | Elkridge, MD | Catonsville, MD | United States |
| Rainfall | 42.5 | 44.7 | 38.1 |
| Snowfall | 16.9 | 18 | 27.8 |
| Precipitation Days | 113.6 | 114.1 | 106.2 |
| Sunny | 207 | 209 | 205 |
| Avg. July High | 86.7 | 87 | 85.8 |
| Avg. Jan. Low | 23.8 | 24.1 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
| UV Index | 3.9 | 4.1 | 4.3 |
| Elevation ft. | 95 | 479 | 2443 |