| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Frost Rare | |
| Average Last Frost Date: | Frost Rare | |
| 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 31522 - Saint Simons Island, GA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 43 | 45 | 52 | 57 | 66 | 72 | 74 | 74 | 71 | 62 | 53 | 46 | 60 |
| Avg Max Temp (°F) | 61 | 63 | 69 | 75 | 82 | 87 | 90 | 89 | 85 | 78 | 70 | 63 | 76 |
| Avg Precip (In.) | 3.9 | 3.49 | 3.95 | 2.83 | 2.73 | 5.11 | 4.91 | 6.28 | 6.34 | 3.87 | 2.51 | 2.85 | 48.78 |