| | Littleton, MA | Chicopee, MA | United States |
| Rainfall | 49 | 46 | 38 |
| Snowfall | 56 | 40 | 28 |
| Precipitation | 128 | 116 | 106 |
| Sunny | 199 | 193 | 205 |
| Avg. July High | 83 | 83 | 86 |
| Avg. Jan. Low | 15 | 15 | 22 |
| Comfort Index (higher=better) | 6.8 | 6.9 | 7 |
| UV Index | 3.5 | 3.4 | 4.3 |
| Elevation | 226 | 85 | 2443 |