| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 58b - Western New England Marble Valleys | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 01257 - Sheffield, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 12 | 14 | 23 | 33 | 43 | 53 | 57 | 55 | 48 | 36 | 29 | 19 | 35 |
| Avg Max Temp (°F) | 32 | 35 | 44 | 57 | 69 | 77 | 81 | 79 | 72 | 61 | 48 | 37 | 58 |
| Avg Precip (In.) | 3.55 | 2.78 | 3.38 | 3.81 | 4.72 | 4.02 | 4.19 | 4.47 | 3.99 | 3.92 | 3.96 | 3.5 | 46.3 |