| | Belmont, MA | Silver Spring, MD | United States |
| Rainfall | 48.6 | 44.3 | 38.1 |
| Snowfall | 52.5 | 14.1 | 27.8 |
| Precipitation Days | 134.3 | 112.4 | 106.2 |
| Sunny | 200 | 202 | 205 |
| Avg. July High | 82.9 | 88.2 | 85.8 |
| Avg. Jan. Low | 17.7 | 24.9 | 21.7 |
| Comfort Index (higher=better) | 6.9 | 7.3 | 7 |
| UV Index | 3.5 | 4.1 | 4.3 |
| Elevation ft. | 56 | 341 | 2443 |