| | Onset, MA | Mashpee, MA | United States |
| Rainfall | 50.7 | 47.3 | 38.1 |
| Snowfall | 36.3 | 24.9 | 27.8 |
| Precipitation Days | 113.6 | 104 | 106.2 |
| Sunny | 204 | 201 | 205 |
| Avg. July High | 81.1 | 79.3 | 85.8 |
| Avg. Jan. Low | 19.5 | 21.4 | 21.7 |
| Comfort Index (higher=better) | 7 | 7.1 | 7 |
| UV Index | 3.3 | 3.4 | 4.3 |
| Elevation ft. | 16 | 69 | 2443 |