De Leon, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52.6 °F (low) to 76.8 °F (high). Annual precipitation averages 32.1 Inches. De Leon 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 | 33.0 °F | 57.7 °F | 1.67 in. |
| February | 36.6 °F | 61.6 °F | 2.11 in. |
| March | 44.1 °F | 68.8 °F | 2.74 in. |
| April | 51.3 °F | 76.7 °F | 2.49 in. |
| May | 60.9 °F | 83.6 °F | 4.36 in. |
| June | 68.2 °F | 90.6 °F | 4.08 in. |
| July | 71.3 °F | 94.8 °F | 1.93 in. |
| August | 70.8 °F | 95.4 °F | 2.5 in. |
| September | 63.8 °F | 88.1 °F | 3.04 in. |
| October | 53.1 °F | 78.8 °F | 3.38 in. |
| November | 42.9 °F | 67.1 °F | 1.98 in. |
| December | 35.0 °F | 58.9 °F | 1.84 in. |
| Annual | 52.6 °F | 76.8 °F | 32.12 in. |
| 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 : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |