| Chelmsford, MA | Littleton, MA | United States |
Rainfall | 47.2 | 48.5 | 38.1 |
Snowfall | 56 | 56.1 | 27.8 |
Precipitation Days | 126 | 128.4 | 106.2 |
Sunny | 201 | 199 | 205 |
Avg. July High | 83.3 | 83.4 | 85.8 |
Avg. Jan. Low | 15.4 | 15 | 21.7 |
Comfort Index (higher=better) | 6.8 | 6.8 | 7 |
UV Index | 3.5 | 3.5 | 4.3 |
Elevation ft. | 243 | 226 | 2443 |