Fort Green, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 62.2 °F (low) to 83.4 °F (high). Annual precipitation averages 55.2 Inches. Fort Green is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 49.0 °F | 72.4 °F | 2.66 in. |
| February | 51.7 °F | 75.4 °F | 2.21 in. |
| March | 55.0 °F | 79.1 °F | 2.88 in. |
| April | 59.9 °F | 83.6 °F | 2.8 in. |
| May | 65.5 °F | 88.2 °F | 3.85 in. |
| June | 71.0 °F | 90.4 °F | 9.23 in. |
| July | 72.7 °F | 91.2 °F | 8.39 in. |
| August | 73.1 °F | 91.5 °F | 8.39 in. |
| September | 72.0 °F | 89.7 °F | 7.67 in. |
| October | 66.0 °F | 85.1 °F | 2.99 in. |
| November | 57.4 °F | 78.9 °F | 1.84 in. |
| December | 52.5 °F | 74.7 °F | 2.32 in. |
| Annual | 62.2 °F | 83.4 °F | 55.23 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |