Gruver, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.8 °C (low) to 21.9 °C (high). Annual precipitation averages 520.7 Millimeters. Gruver 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.9 °C | 9.8 °C | 13.72 mm |
| February | -4.7 °C | 11.7 °C | 10.92 mm |
| March | -0.3 °C | 16.8 °C | 32.26 mm |
| April | 4.2 °C | 21.2 °C | 44.7 mm |
| May | 10.2 °C | 26.5 °C | 65.02 mm |
| June | 16.2 °C | 31.9 °C | 79.25 mm |
| July | 18.7 °C | 34.2 °C | 68.83 mm |
| August | 17.7 °C | 33.1 °C | 74.93 mm |
| September | 13.2 °C | 29.1 °C | 40.39 mm |
| October | 6.1 °C | 22.4 °C | 49.28 mm |
| November | -0.6 °C | 15.8 °C | 19.05 mm |
| December | -5.2 °C | 9.8 °C | 22.35 mm |
| Annual | 5.8 °C | 21.9 °C | 520.7 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 7a : -17.8°C to -15°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 |