| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Dec. 1 - Dec. 10 | |
| Average Last Frost Date: | Feb. 21 - Feb. 29 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 75a - Gulf Coast Flatwoods | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 32355 - Saint Marks, FL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 41 | 43 | 50 | 56 | 63 | 69 | 72 | 72 | 69 | 58 | 49 | 43 | 57 |
| Avg Max Temp (°F) | 63 | 65 | 72 | 78 | 85 | 90 | 91 | 91 | 88 | 81 | 72 | 65 | 78 |
| Avg Precip (In.) | 4.81 | 4.04 | 5.31 | 3.79 | 3.04 | 5.8 | 7.5 | 6.39 | 5.36 | 3.35 | 2.98 | 3.31 | 55.69 |