Port LaBelle, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 62.6 °F (low) to 84.6 °F (high). Annual precipitation averages 53.4 Inches. Port LaBelle is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 50.2 °F | 74.8 °F | 2.01 in. |
| February | 52.5 °F | 77.6 °F | 2.0 in. |
| March | 55.3 °F | 80.8 °F | 2.41 in. |
| April | 60.1 °F | 85.2 °F | 2.54 in. |
| May | 65.4 °F | 89.0 °F | 4.5 in. |
| June | 70.8 °F | 91.0 °F | 9.81 in. |
| July | 72.4 °F | 91.7 °F | 7.91 in. |
| August | 72.9 °F | 91.9 °F | 9.03 in. |
| September | 72.1 °F | 90.2 °F | 6.9 in. |
| October | 66.8 °F | 86.3 °F | 2.8 in. |
| November | 58.7 °F | 80.5 °F | 1.73 in. |
| December | 53.9 °F | 76.5 °F | 1.78 in. |
| Annual | 62.6 °F | 84.6 °F | 53.42 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |