Weston, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.3 °C (low) to 24 °C (high). Annual precipitation averages 1057.7 Millimeters. Weston 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 | 0.8 °C | 12.4 °C | 61.21 mm |
| February | 2.8 °C | 14.9 °C | 75.18 mm |
| March | 7 °C | 19.1 °C | 96.01 mm |
| April | 11.3 °C | 23.4 °C | 95.76 mm |
| May | 16.6 °C | 27.6 °C | 132.33 mm |
| June | 21.3 °C | 32.2 °C | 96.77 mm |
| July | 23.6 °C | 34.9 °C | 59.44 mm |
| August | 23.2 °C | 35.1 °C | 63.25 mm |
| September | 19.2 °C | 31 °C | 84.58 mm |
| October | 12.9 °C | 25.3 °C | 121.16 mm |
| November | 6.8 °C | 18.6 °C | 84.33 mm |
| December | 2.1 °C | 13.6 °C | 87.63 mm |
| Annual | 12.3 °C | 24 °C | 1057.65 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |