| | Devens, MA | Ayer, MA | United States |
| Rainfall | 47.9 | 47.9 | 38.1 |
| Snowfall | 53.2 | 56.1 | 27.8 |
| Precipitation Days | 122 | 127.9 | 106.2 |
| Sunny | 197 | 200 | 205 |
| Avg. July High | 83.7 | 83.7 | 85.8 |
| Avg. Jan. Low | 14.5 | 14.4 | 21.7 |
| Comfort Index (higher=better) | 6.8 | 6.8 | 7 |
| UV Index | 3.3 | 3.5 | 4.3 |
| Elevation ft. | 266 | 236 | 2443 |