| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 59c - Southern New England Coastal Plains and Hills |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 02828 - Greenville, RI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 19 | 27 | 36 | 46 | 55 | 61 | 60 | 51 | 40 | 32 | 23 | 39 |
| Avg Max Temp (°F) | 36 | 38 | 47 | 58 | 69 | 77 | 82 | 80 | 72 | 62 | 51 | 41 | 59 |
| Avg Precip (In.) | 4.45 | 3.51 | 4.5 | 4.35 | 3.69 | 3.71 | 3.65 | 4.21 | 4.05 | 4.28 | 4.59 | 4.32 | 49.31 |