Mentone, Texas has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 9.6 °C (low) to 27.4 °C (high). Annual precipitation averages 251 Millimeters. Mentone is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.8 °C | 15.7 °C | 12.45 mm |
| February | 0.3 °C | 18.9 °C | 9.65 mm |
| March | 3.8 °C | 23.3 °C | 10.16 mm |
| April | 8.8 °C | 28.7 °C | 10.16 mm |
| May | 14.3 °C | 33.1 °C | 22.86 mm |
| June | 19.3 °C | 37.3 °C | 26.16 mm |
| July | 21.3 °C | 36.8 °C | 38.86 mm |
| August | 20.6 °C | 36.7 °C | 22.86 mm |
| September | 16.6 °C | 33.5 °C | 52.83 mm |
| October | 9.8 °C | 28.4 °C | 22.61 mm |
| November | 2.8 °C | 20.9 °C | 10.67 mm |
| December | -0.9 °C | 15.9 °C | 11.68 mm |
| Annual | 9.6 °C | 27.4 °C | 250.95 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSh - Hot Semi-Arid Climate |