Brownfield, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 7.9 °C (low) to 23.9 °C (high). Annual precipitation averages 447.3 Millimeters. Brownfield is located in USDA Plant Hardiness Zone 8a. 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 | -3.2 °C | 12.8 °C | 17.27 mm |
| February | -1.5 °C | 15.4 °C | 15.75 mm |
| March | 2.4 °C | 19.9 °C | 25.65 mm |
| April | 6.7 °C | 24.5 °C | 26.67 mm |
| May | 12.5 °C | 28.9 °C | 57.91 mm |
| June | 17.6 °C | 33.2 °C | 67.56 mm |
| July | 19.3 °C | 33.9 °C | 49.78 mm |
| August | 18.6 °C | 33.3 °C | 44.45 mm |
| September | 14.6 °C | 29.3 °C | 63.75 mm |
| October | 8.3 °C | 24.5 °C | 39.12 mm |
| November | 1.6 °C | 17.8 °C | 20.83 mm |
| December | -2.3 °C | 13.3 °C | 18.54 mm |
| Annual | 7.9 °C | 23.9 °C | 447.28 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |