Wellington, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 8.6 °C (low) to 24.2 °C (high). Annual precipitation averages 606.8 Millimeters. Wellington is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.3 °C | 12 °C | 19.05 mm |
| February | -1.6 °C | 14.1 °C | 22.35 mm |
| March | 2.9 °C | 19.3 °C | 36.58 mm |
| April | 7.5 °C | 24.6 °C | 50.55 mm |
| May | 13.4 °C | 28.9 °C | 95.25 mm |
| June | 18.7 °C | 33.4 °C | 85.85 mm |
| July | 20.7 °C | 35.9 °C | 58.42 mm |
| August | 20.1 °C | 35.4 °C | 65.28 mm |
| September | 15.8 °C | 31.2 °C | 66.8 mm |
| October | 9 °C | 25.3 °C | 46.74 mm |
| November | 2.3 °C | 17.9 °C | 32.51 mm |
| December | -2.3 °C | 12.2 °C | 27.43 mm |
| Annual | 8.6 °C | 24.2 °C | 606.81 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |