DeBary, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 16.2 °C (low) to 28 °C (high). Annual precipitation averages 1395.2 Millimeters. DeBary is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.2 °C | 21.2 °C | 74.93 mm |
| February | 9.6 °C | 22.8 °C | 61.21 mm |
| March | 11.8 °C | 25.3 °C | 83.31 mm |
| April | 14.9 °C | 28.2 °C | 72.14 mm |
| May | 18.4 °C | 30.9 °C | 96.01 mm |
| June | 21.8 °C | 32.5 °C | 199.14 mm |
| July | 22.8 °C | 33.3 °C | 194.31 mm |
| August | 22.9 °C | 33.2 °C | 209.3 mm |
| September | 21.9 °C | 31.7 °C | 182.12 mm |
| October | 18.2 °C | 28.9 °C | 103.12 mm |
| November | 13.3 °C | 25.1 °C | 56.13 mm |
| December | 10.2 °C | 22.4 °C | 63.5 mm |
| Annual | 16.2 °C | 28 °C | 1395.22 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |