| | Chelsea, MA | Lawrence, MA | United States |
| Rainfall | 47.9 | 48.3 | 38.1 |
| Snowfall | 47.5 | 53.7 | 27.8 |
| Precipitation Days | 127 | 127.5 | 106.2 |
| Sunny | 202 | 198 | 205 |
| Avg. July High | 82.2 | 82.5 | 85.8 |
| Avg. Jan. Low | 19.2 | 15.9 | 21.7 |
| Comfort Index (higher=better) | 7 | 6.9 | 7 |
| UV Index | 3.4 | 3.2 | 4.3 |
| Elevation ft. | 39 | 43 | 2443 |