| Concord, MA | Chelmsford, MA | United States |
Rainfall | 48 | 47 | 38 |
Snowfall | 51 | 56 | 28 |
Precipitation | 131 | 126 | 106 |
Sunny | 201 | 201 | 205 |
Avg. July High | 83 | 83 | 86 |
Avg. Jan. Low | 16 | 15 | 22 |
Comfort Index (higher=better) | 6.9 | 6.8 | 7 |
UV Index | 3.5 | 3.5 | 4.3 |
Elevation | 128 | 243 | 2443 |