| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | 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: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 59c - Southern New England Coastal Plains and Hills | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 02921 - Cranston, RI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 21 | 29 | 38 | 47 | 57 | 63 | 62 | 54 | 42 | 34 | 25 | 41 |
| Avg Max Temp (°F) | 36 | 39 | 47 | 58 | 69 | 77 | 82 | 80 | 73 | 62 | 52 | 41 | 60 |
| Avg Precip (In.) | 4.45 | 3.52 | 4.51 | 4.27 | 3.72 | 3.48 | 3.33 | 4.06 | 3.82 | 3.94 | 4.52 | 4.26 | 47.86 |