| | Grafton, MA | Lexington, MA | United States |
| Rainfall | 48.7 | 48.2 | 38.1 |
| Snowfall | 43.6 | 52.2 | 27.8 |
| Precipitation Days | 120.4 | 134.9 | 106.2 |
| Sunny | 197 | 200 | 205 |
| Avg. July High | 82.5 | 82.8 | 85.8 |
| Avg. Jan. Low | 13.5 | 16.7 | 21.7 |
| Comfort Index (higher=better) | 6.9 | 6.8 | 7 |
| UV Index | 3.3 | 3.5 | 4.3 |
| Elevation ft. | 476 | 213 | 2443 |