Ladonia, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.5 °C (low) to 23.7 °C (high). Annual precipitation averages 1139.2 Millimeters. Ladonia is located in USDA Plant Hardiness Zone 8a. 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 | 0.3 °C | 12.3 °C | 74.68 mm |
| February | 2.3 °C | 14.6 °C | 82.8 mm |
| March | 6.4 °C | 18.8 °C | 103.12 mm |
| April | 10.6 °C | 23.1 °C | 100.08 mm |
| May | 16.1 °C | 27.2 °C | 132.33 mm |
| June | 20.6 °C | 31.7 °C | 99.82 mm |
| July | 22.5 °C | 34.3 °C | 68.07 mm |
| August | 21.9 °C | 34.5 °C | 70.61 mm |
| September | 18.1 °C | 30.8 °C | 87.88 mm |
| October | 11.7 °C | 25 °C | 122.68 mm |
| November | 6 °C | 18.4 °C | 95.25 mm |
| December | 1.6 °C | 13.4 °C | 101.85 mm |
| Annual | 11.5 °C | 23.7 °C | 1139.17 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |