| | Monrovia, MD | Jefferson, MD | United States |
| Rainfall | 44.1 | 42.4 | 38.1 |
| Snowfall | 25 | 19.4 | 27.8 |
| Precipitation Days | 115 | 110.6 | 106.2 |
| Sunny | 197 | 197 | 205 |
| Avg. July High | 85.4 | 87.5 | 85.8 |
| Avg. Jan. Low | 23.4 | 23 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.3 | 7 |
| UV Index | 4.2 | 4.2 | 4.3 |
| Elevation ft. | 413 | 581 | 2443 |