Leona, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13 °C (low) to 25.7 °C (high). Annual precipitation averages 1105.2 Millimeters. Leona is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.9 °C | 15.3 °C | 93.73 mm |
| February | 4.9 °C | 17.6 °C | 83.57 mm |
| March | 8.4 °C | 21.5 °C | 96.27 mm |
| April | 12.3 °C | 25.4 °C | 83.82 mm |
| May | 17.5 °C | 29.2 °C | 116.33 mm |
| June | 21.3 °C | 32.8 °C | 98.04 mm |
| July | 22.7 °C | 34.7 °C | 63.5 mm |
| August | 22.3 °C | 35.2 °C | 74.42 mm |
| September | 19.1 °C | 32 °C | 88.9 mm |
| October | 13.1 °C | 27 °C | 108.46 mm |
| November | 7.8 °C | 20.8 °C | 96.52 mm |
| December | 3.8 °C | 16.3 °C | 101.6 mm |
| Annual | 13 °C | 25.7 °C | 1105.16 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |