Fort Myers, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 18.7 °C (low) to 28.8 °C (high). Annual precipitation averages 1497.6 Millimeters. Fort Myers is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.1 °C | 23.4 °C | 56.64 mm |
| February | 13.4 °C | 24.8 °C | 53.34 mm |
| March | 15.1 °C | 26.4 °C | 56.39 mm |
| April | 17.9 °C | 28.8 °C | 68.83 mm |
| May | 20.6 °C | 30.9 °C | 97.54 mm |
| June | 23.1 °C | 32.3 °C | 266.45 mm |
| July | 23.8 °C | 32.7 °C | 244.09 mm |
| August | 24 °C | 32.8 °C | 257.56 mm |
| September | 23.5 °C | 32.1 °C | 223.77 mm |
| October | 20.9 °C | 29.9 °C | 76.2 mm |
| November | 16.6 °C | 26.8 °C | 47.24 mm |
| December | 13.9 °C | 24.6 °C | 49.53 mm |
| Annual | 18.7 °C | 28.8 °C | 1497.58 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10b : 1.7°C to 4.4°C |
| Plant Hardiness Zone - 2012 | Zone 10a : -1.1°C to 1.7°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |