Brownfield, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 46.2 °F (low) to 75 °F (high). Annual precipitation averages 17.6 Inches. 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 | 26.3 °F | 55.0 °F | 0.68 in. |
| February | 29.3 °F | 59.7 °F | 0.62 in. |
| March | 36.3 °F | 67.8 °F | 1.01 in. |
| April | 44.0 °F | 76.1 °F | 1.05 in. |
| May | 54.5 °F | 84.0 °F | 2.28 in. |
| June | 63.7 °F | 91.7 °F | 2.66 in. |
| July | 66.7 °F | 93.1 °F | 1.96 in. |
| August | 65.4 °F | 91.9 °F | 1.75 in. |
| September | 58.3 °F | 84.7 °F | 2.51 in. |
| October | 46.9 °F | 76.1 °F | 1.54 in. |
| November | 34.9 °F | 64.1 °F | 0.82 in. |
| December | 27.8 °F | 55.9 °F | 0.73 in. |
| Annual | 46.2 °F | 75 °F | 17.61 in. |
| 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 : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |