| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| 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: | 59e - Narragansett/Bristol Lowland | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 02809 - Bristol, RI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 21 | 22 | 30 | 38 | 48 | 57 | 64 | 63 | 55 | 44 | 36 | 26 | 42 |
| Avg Max Temp (°F) | 37 | 39 | 47 | 57 | 67 | 76 | 81 | 80 | 73 | 63 | 52 | 42 | 59 |
| Avg Precip (In.) | 4.5 | 3.6 | 4.52 | 4.34 | 3.67 | 3.51 | 3.4 | 4.13 | 3.85 | 3.87 | 4.53 | 4.42 | 48.32 |