| | Riverside, MD | Smyrna, DE | United States |
| Rainfall | 46.6 | 45.4 | 38.1 |
| Snowfall | 14.5 | 15.3 | 27.8 |
| Precipitation Days | 120.3 | 112.9 | 106.2 |
| Sunny | 211 | 200 | 205 |
| Avg. July High | 88.2 | 87.2 | 85.8 |
| Avg. Jan. Low | 24.6 | 25.2 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7.3 | 7 |
| UV Index | 3.9 | 3.8 | 4.3 |
| Elevation ft. | 79 | 33 | 2443 |