Longwood, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 16.7 °C (low) to 28 °C (high). Annual precipitation averages 1431 Millimeters. Longwood is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.9 °C | 21.3 °C | 75.44 mm |
| February | 10.3 °C | 22.8 °C | 63.5 mm |
| March | 12.6 °C | 25.3 °C | 89.15 mm |
| April | 15.6 °C | 28.2 °C | 78.23 mm |
| May | 19 °C | 30.9 °C | 97.54 mm |
| June | 22.1 °C | 32.5 °C | 209.04 mm |
| July | 23.1 °C | 33.2 °C | 193.04 mm |
| August | 23.2 °C | 33.2 °C | 210.82 mm |
| September | 22.3 °C | 31.8 °C | 187.96 mm |
| October | 18.7 °C | 29 °C | 102.87 mm |
| November | 14 °C | 25.2 °C | 57.66 mm |
| December | 10.8 °C | 22.6 °C | 65.79 mm |
| Annual | 16.7 °C | 28 °C | 1431.04 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 |