| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 58b - Western New England Marble Valleys |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 01225 - Cheshire, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 10 | 11 | 20 | 31 | 41 | 50 | 54 | 53 | 44 | 34 | 27 | 16 | 33 |
| Avg Max Temp (°F) | 30 | 32 | 41 | 53 | 66 | 74 | 79 | 77 | 68 | 58 | 46 | 35 | 55 |
| Avg Precip (In.) | 3.37 | 2.66 | 3.43 | 3.86 | 4.84 | 4.46 | 4.42 | 4.64 | 4.26 | 4 | 3.99 | 3.38 | 47.29 |