| Billerica, MA | Merrimac, MA | United States |
Rainfall | 48 | 50 | 38 |
Snowfall | 55 | 57 | 28 |
Precipitation | 132 | 130 | 106 |
Sunny | 201 | 201 | 205 |
Avg. July High | 83 | 82 | 86 |
Avg. Jan. Low | 17 | 15 | 22 |
Comfort Index (higher=better) | 6.8 | 6.8 | 7 |
UV Index | 3.5 | 3.2 | 4.3 |
Elevation | 253 | 102 | 2443 |