Sanderson, Texas has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 11.6 °C (low) to 26.3 °C (high). Annual precipitation averages 334.5 Millimeters. Sanderson is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.8 °C | 16.4 °C | 16.51 mm |
| February | 2.9 °C | 19 °C | 13.46 mm |
| March | 7.1 °C | 23.3 °C | 13.97 mm |
| April | 11.1 °C | 27.5 °C | 14.73 mm |
| May | 16.6 °C | 31.3 °C | 40.39 mm |
| June | 20.7 °C | 34.1 °C | 40.64 mm |
| July | 21.8 °C | 34.3 °C | 55.37 mm |
| August | 21.6 °C | 34.4 °C | 38.35 mm |
| September | 18 °C | 30.9 °C | 40.39 mm |
| October | 11.9 °C | 26.6 °C | 33.27 mm |
| November | 5.3 °C | 20.9 °C | 14.99 mm |
| December | 1.2 °C | 16.8 °C | 12.45 mm |
| Annual | 11.6 °C | 26.3 °C | 334.52 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSh - Hot Semi-Arid Climate |