| | Preston, MD | La Vale, MD | United States |
| Rainfall | 45.4 | 38.2 | 38.1 |
| Snowfall | 11.4 | 30.1 | 27.8 |
| Precipitation Days | 107 | 129.1 | 106.2 |
| Sunny | 209 | 162 | 205 |
| Avg. July High | 88.4 | 87.9 | 85.8 |
| Avg. Jan. Low | 27.2 | 21.2 | 21.7 |
| Comfort Index (higher=better) | 7.4 | 7.1 | 7 |
| UV Index | 3.9 | 3.5 | 4.3 |
| Elevation ft. | 46 | 781 | 2443 |