| | Waldorf, MD | Harrington, DE | United States |
| Rainfall | 43.9 | 45.3 | 38.1 |
| Snowfall | 15.6 | 14.1 | 27.8 |
| Precipitation Days | 107.7 | 120 | 106.2 |
| Sunny | 199 | 202 | 205 |
| Avg. July High | 86.5 | 86.3 | 85.8 |
| Avg. Jan. Low | 27 | 25.2 | 21.7 |
| Comfort Index (higher=better) | 7.5 | 7.3 | 7 |
| UV Index | 4.2 | 3.8 | 4.3 |
| Elevation ft. | 210 | 59 | 2443 |