| | Tewksbury, MA | Amherst, NH | United States |
| Rainfall | 49.8 | 46.4 | 38.1 |
| Snowfall | 55.2 | 57.4 | 27.8 |
| Precipitation Days | 131.8 | 130.1 | 106.2 |
| Sunny | 201 | 199 | 205 |
| Avg. July High | 83 | 82.3 | 85.8 |
| Avg. Jan. Low | 16 | 13.3 | 21.7 |
| Comfort Index (higher=better) | 6.8 | 6.7 | 7 |
| UV Index | 3.5 | 3.2 | 4.3 |
| Elevation ft. | 121 | 262 | 2443 |