Texline, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 4.3 °C (low) to 20.7 °C (high). Annual precipitation averages 421.9 Millimeters. Texline is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.4 °C | 9.6 °C | 6.86 mm |
| February | -5.3 °C | 11.3 °C | 8.64 mm |
| March | -1.4 °C | 15.9 °C | 23.11 mm |
| April | 2.6 °C | 19.8 °C | 27.18 mm |
| May | 8.3 °C | 24.9 °C | 52.83 mm |
| June | 13.8 °C | 30.4 °C | 49.78 mm |
| July | 16.4 °C | 32.4 °C | 78.99 mm |
| August | 15.7 °C | 30.9 °C | 77.72 mm |
| September | 11.5 °C | 27.4 °C | 40.64 mm |
| October | 4.4 °C | 21.3 °C | 34.54 mm |
| November | -1.7 °C | 14.7 °C | 13.21 mm |
| December | -6.1 °C | 9.3 °C | 8.38 mm |
| Annual | 4.3 °C | 20.7 °C | 421.88 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |