Poinciana, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 17.1 °C (low) to 28.4 °C (high). Annual precipitation averages 1294.1 Millimeters. Poinciana is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.8 °C | 22.2 °C | 63.75 mm |
| February | 11.3 °C | 23.8 °C | 54.36 mm |
| March | 13.3 °C | 25.9 °C | 72.9 mm |
| April | 15.7 °C | 28.6 °C | 67.06 mm |
| May | 18.8 °C | 31.2 °C | 92.96 mm |
| June | 21.9 °C | 32.6 °C | 216.66 mm |
| July | 23 °C | 33.1 °C | 178.31 mm |
| August | 23.3 °C | 33.1 °C | 196.09 mm |
| September | 22.6 °C | 32.1 °C | 168.15 mm |
| October | 19.3 °C | 29.5 °C | 78.23 mm |
| November | 14.5 °C | 25.9 °C | 43.43 mm |
| December | 11.3 °C | 23.3 °C | 62.23 mm |
| Annual | 17.1 °C | 28.4 °C | 1294.13 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |