La Marque, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 17.5 °C (low) to 25.2 °C (high). Annual precipitation averages 1426.7 Millimeters. La Marque is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.1 °C | 16.6 °C | 116.59 mm |
| February | 10 °C | 18.3 °C | 79.25 mm |
| March | 13.4 °C | 21.3 °C | 84.07 mm |
| April | 17.1 °C | 24.7 °C | 103.89 mm |
| May | 21.4 °C | 28.2 °C | 117.09 mm |
| June | 24.4 °C | 31.2 °C | 142.75 mm |
| July | 25.4 °C | 32.2 °C | 112.52 mm |
| August | 25.2 °C | 32.6 °C | 153.16 mm |
| September | 23.3 °C | 30.6 °C | 163.07 mm |
| October | 19.2 °C | 26.7 °C | 128.02 mm |
| November | 13.6 °C | 21.7 °C | 116.59 mm |
| December | 9.2 °C | 17.7 °C | 109.73 mm |
| Annual | 17.5 °C | 25.2 °C | 1426.73 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |