| | Andrews AFB, MD | Algonquin, MD | United States |
| Rainfall | 43.8 | 45.8 | 38.1 |
| Snowfall | 13.4 | 10.7 | 27.8 |
| Precipitation Days | 109.8 | 108 | 106.2 |
| Sunny | 200 | 209 | 205 |
| Avg. July High | 88.3 | 89.2 | 85.8 |
| Avg. Jan. Low | 25.7 | 28.2 | 21.7 |
| Comfort Index (higher=better) | 7.4 | 7.4 | 7 |
| UV Index | 4.3 | 4.2 | 4.3 |
| Elevation ft. | 250 | 13 | 2443 |