Texas City, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 18.1 °C (low) to 24.3 °C (high). Annual precipitation averages 1409.2 Millimeters. Texas City is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.7 °C | 16.1 °C | 116.08 mm |
| February | 10.6 °C | 17.6 °C | 79.5 mm |
| March | 14.1 °C | 20.6 °C | 85.09 mm |
| April | 17.7 °C | 23.7 °C | 103.12 mm |
| May | 22 °C | 27.1 °C | 108.46 mm |
| June | 24.9 °C | 30.1 °C | 136.14 mm |
| July | 26.1 °C | 31.1 °C | 111.51 mm |
| August | 25.8 °C | 31.5 °C | 151.64 mm |
| September | 24 °C | 29.6 °C | 163.58 mm |
| October | 19.8 °C | 25.8 °C | 128.52 mm |
| November | 14.1 °C | 21.1 °C | 115.57 mm |
| December | 9.8 °C | 17.3 °C | 109.98 mm |
| Annual | 18.1 °C | 24.3 °C | 1409.19 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |