| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F | |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F | |
| Average First Frost Date: | Dec. 11 - Dec. 20 | |
| Average Last Frost Date: | Feb. 21 - Feb. 29 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 75j - Sea Islands/Coastal Marsh | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 29451 - Isle of Palms, SC | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 39 | 46 | 54 | 63 | 70 | 74 | 73 | 68 | 58 | 49 | 41 | 56 |
| Avg Max Temp (°F) | 57 | 60 | 66 | 73 | 80 | 86 | 89 | 88 | 83 | 76 | 68 | 60 | 74 |
| Avg Precip (In.) | 4.27 | 3.17 | 4.16 | 2.84 | 2.96 | 5.04 | 5 | 6.44 | 5.46 | 3.65 | 2.97 | 3.5 | 49.45 |