| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F | |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 1 - Apr. 10 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 65l - Vidalia Upland | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 29550 - Hartsville, SC | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 35 | 41 | 49 | 58 | 66 | 70 | 68 | 63 | 50 | 42 | 35 | 51 |
| Avg Max Temp (°F) | 54 | 59 | 67 | 75 | 82 | 88 | 91 | 89 | 84 | 75 | 66 | 57 | 74 |
| Avg Precip (In.) | 4.48 | 3.44 | 4.29 | 2.95 | 3.43 | 4.48 | 5.11 | 5.06 | 3.99 | 3.16 | 2.92 | 3.37 | 46.68 |