| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F | |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Mar. 21 - Mar. 31 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 63h - Carolina Flatwoods | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 29488 - Walterboro, SC | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 35 | 37 | 43 | 50 | 59 | 66 | 70 | 69 | 64 | 53 | 44 | 37 | 52 |
| Avg Max Temp (°F) | 58 | 62 | 70 | 77 | 84 | 89 | 92 | 90 | 85 | 77 | 69 | 60 | 76 |
| Avg Precip (In.) | 4.13 | 3.44 | 4.52 | 2.81 | 3.73 | 5.66 | 5.17 | 6.27 | 4.64 | 2.72 | 2.69 | 3.79 | 49.57 |