DeSoto, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.9 °C (low) to 24.8 °C (high). Annual precipitation averages 1026.2 Millimeters. DeSoto is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.9 °C | 13.7 °C | 69.85 mm |
| February | 3.9 °C | 15.8 °C | 73.15 mm |
| March | 7.9 °C | 19.9 °C | 91.95 mm |
| April | 12.2 °C | 24.2 °C | 95 mm |
| May | 17.4 °C | 28.3 °C | 115.57 mm |
| June | 21.8 °C | 32.8 °C | 99.31 mm |
| July | 23.6 °C | 35.1 °C | 54.86 mm |
| August | 23.4 °C | 35.5 °C | 60.2 mm |
| September | 19.5 °C | 31.8 °C | 82.8 mm |
| October | 13.2 °C | 25.9 °C | 123.44 mm |
| November | 7.6 °C | 19.4 °C | 76.45 mm |
| December | 2.9 °C | 14.6 °C | 83.57 mm |
| Annual | 12.9 °C | 24.8 °C | 1026.15 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°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 |