Seth Ward, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 7 °C (low) to 22.5 °C (high). Annual precipitation averages 481.6 Millimeters. Seth Ward is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.3 °C | 11.4 °C | 15.75 mm |
| February | -2.7 °C | 13.7 °C | 14.48 mm |
| March | 1.4 °C | 18.3 °C | 30.48 mm |
| April | 5.6 °C | 22.7 °C | 33.27 mm |
| May | 11.6 °C | 27.2 °C | 69.6 mm |
| June | 16.9 °C | 31.7 °C | 75.69 mm |
| July | 18.8 °C | 33 °C | 57.4 mm |
| August | 18.1 °C | 32.3 °C | 53.85 mm |
| September | 13.9 °C | 28.4 °C | 51.56 mm |
| October | 7.2 °C | 23.2 °C | 39.37 mm |
| November | 0.7 °C | 16.7 °C | 21.08 mm |
| December | -3.5 °C | 11.7 °C | 19.05 mm |
| Annual | 7 °C | 22.5 °C | 481.58 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°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 |