Eustis, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 15.9 °C (low) to 27.9 °C (high). Annual precipitation averages 1357.9 Millimeters. Eustis is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.7 °C | 20.9 °C | 74.93 mm |
| February | 9.3 °C | 22.6 °C | 61.47 mm |
| March | 11.6 °C | 25.3 °C | 88.9 mm |
| April | 14.8 °C | 28.2 °C | 68.83 mm |
| May | 18.3 °C | 30.9 °C | 90.42 mm |
| June | 21.7 °C | 32.5 °C | 199.64 mm |
| July | 22.7 °C | 33.1 °C | 185.42 mm |
| August | 22.8 °C | 33.1 °C | 210.31 mm |
| September | 21.7 °C | 31.7 °C | 171.2 mm |
| October | 17.8 °C | 28.8 °C | 85.85 mm |
| November | 12.7 °C | 25.1 °C | 54.36 mm |
| December | 9.7 °C | 22.2 °C | 66.55 mm |
| Annual | 15.9 °C | 27.9 °C | 1357.88 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 |