La Vernia, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14.5 °C (low) to 27.3 °C (high). Annual precipitation averages 833.6 Millimeters. La Vernia is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.5 °C | 17.8 °C | 48.77 mm |
| February | 6.7 °C | 20.2 °C | 48.01 mm |
| March | 10.6 °C | 23.4 °C | 64.77 mm |
| April | 14.1 °C | 27.2 °C | 66.29 mm |
| May | 18.9 °C | 30.8 °C | 96.27 mm |
| June | 22.1 °C | 33.9 °C | 88.39 mm |
| July | 23.1 °C | 35.4 °C | 51.56 mm |
| August | 22.9 °C | 36.2 °C | 66.29 mm |
| September | 20.3 °C | 32.9 °C | 86.87 mm |
| October | 15.1 °C | 28.7 °C | 90.17 mm |
| November | 9.6 °C | 22.8 °C | 66.55 mm |
| December | 5.5 °C | 18.6 °C | 59.69 mm |
| Annual | 14.5 °C | 27.3 °C | 833.63 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |