| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F 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 7a: 0F to 5F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| 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 02748 - South Dartmouth, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 22 | 29 | 38 | 48 | 58 | 64 | 64 | 56 | 45 | 36 | 26 | 42 |
| Avg Max Temp (°F) | 37 | 39 | 46 | 56 | 67 | 77 | 82 | 81 | 74 | 63 | 52 | 42 | 60 |
| Avg Precip (In.) | 4.63 | 3.9 | 4.61 | 4.35 | 3.68 | 3.76 | 3.46 | 4.43 | 3.87 | 3.97 | 4.59 | 4.66 | 49.9 |