Farwell, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 42.5 °F (low) to 72.5 °F (high). Annual precipitation averages 17.3 Inches. Farwell is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.2 °F | 52.6 °F | 0.52 in. |
| February | 26.0 °F | 57.2 °F | 0.38 in. |
| March | 32.4 °F | 65.1 °F | 0.88 in. |
| April | 39.4 °F | 72.5 °F | 0.89 in. |
| May | 49.8 °F | 81.1 °F | 1.85 in. |
| June | 59.7 °F | 90.3 °F | 2.32 in. |
| July | 63.4 °F | 91.4 °F | 2.46 in. |
| August | 62.1 °F | 89.8 °F | 2.74 in. |
| September | 55.0 °F | 83.1 °F | 2.03 in. |
| October | 43.0 °F | 72.9 °F | 1.86 in. |
| November | 31.6 °F | 61.7 °F | 0.64 in. |
| December | 24.2 °F | 52.8 °F | 0.69 in. |
| Annual | 42.5 °F | 72.5 °F | 17.26 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |