| | Newton, MA | Reston, VA | United States |
| Rainfall | 47.7 | 42.7 | 38.1 |
| Snowfall | 49.6 | 21.5 | 27.8 |
| Precipitation Days | 131.1 | 117.9 | 106.2 |
| Sunny | 204 | 197 | 205 |
| Avg. July High | 82.8 | 85.5 | 85.8 |
| Avg. Jan. Low | 17.8 | 23.5 | 21.7 |
| Comfort Index (higher=better) | 6.9 | 7.3 | 7 |
| UV Index | 3.5 | 4 | 4.3 |
| Elevation ft. | 98 | 331 | 2443 |