| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F | |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F | |
| Average First Frost Date: | Dec. 21 - Dec. 31 | |
| Average Last Frost Date: | Feb. 11 - Feb. 20 | |
| 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 29464 - Mount Pleasant, SC | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 40 | 47 | 54 | 63 | 70 | 74 | 73 | 68 | 58 | 49 | 41 | 56 |
| Avg Max Temp (°F) | 57 | 60 | 66 | 73 | 80 | 86 | 89 | 88 | 84 | 76 | 68 | 60 | 74 |
| Avg Precip (In.) | 4.15 | 3.08 | 4.15 | 2.77 | 3.01 | 5.16 | 5.17 | 6.49 | 5.56 | 3.49 | 2.82 | 3.35 | 49.21 |