Sudan, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 6 °C (low) to 23.1 °C (high). Annual precipitation averages 451.6 Millimeters. Sudan 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 | -5.1 °C | 12.1 °C | 13.72 mm |
| February | -3.6 °C | 14.6 °C | 12.45 mm |
| March | 0.4 °C | 19 °C | 25.91 mm |
| April | 4.4 °C | 23.3 °C | 25.15 mm |
| May | 10.4 °C | 27.8 °C | 53.34 mm |
| June | 15.9 °C | 32.5 °C | 67.06 mm |
| July | 17.8 °C | 33.3 °C | 57.4 mm |
| August | 16.9 °C | 32.6 °C | 61.21 mm |
| September | 12.9 °C | 28.7 °C | 58.17 mm |
| October | 6.2 °C | 23.5 °C | 41.15 mm |
| November | -0.4 °C | 17.2 °C | 18.8 mm |
| December | -4.3 °C | 12.3 °C | 17.27 mm |
| Annual | 6 °C | 23.1 °C | 451.63 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |