Leon Valley, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 58.1 °F (low) to 80.7 °F (high). Annual precipitation averages 34.9 Inches. Leon Valley is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 40.4 °F | 63.6 °F | 2.03 in. |
| February | 44.2 °F | 68.0 °F | 2.0 in. |
| March | 50.9 °F | 74.2 °F | 2.53 in. |
| April | 57.4 °F | 80.9 °F | 2.38 in. |
| May | 65.9 °F | 87.0 °F | 4.21 in. |
| June | 71.8 °F | 92.7 °F | 3.57 in. |
| July | 73.6 °F | 95.2 °F | 2.59 in. |
| August | 73.6 °F | 96.4 °F | 2.63 in. |
| September | 68.7 °F | 90.8 °F | 3.93 in. |
| October | 59.6 °F | 82.7 °F | 3.97 in. |
| November | 49.3 °F | 72.3 °F | 2.99 in. |
| December | 42.1 °F | 65.0 °F | 2.08 in. |
| Annual | 58.1 °F | 80.7 °F | 34.91 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |