Hereford, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.7 °C (low) to 22.3 °C (high). Annual precipitation averages 485.4 Millimeters. Hereford 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 | -5.4 °C | 10.9 °C | 15.24 mm |
| February | -4 °C | 13.2 °C | 11.68 mm |
| March | -0.2 °C | 17.7 °C | 28.7 mm |
| April | 3.9 °C | 22.2 °C | 27.69 mm |
| May | 9.8 °C | 27.1 °C | 53.85 mm |
| June | 15.6 °C | 32.1 °C | 81.03 mm |
| July | 17.7 °C | 33.2 °C | 59.18 mm |
| August | 17.1 °C | 32.4 °C | 75.69 mm |
| September | 12.9 °C | 28.4 °C | 48.01 mm |
| October | 6 °C | 22.8 °C | 47.5 mm |
| November | -0.7 °C | 16 °C | 18.29 mm |
| December | -4.8 °C | 11 °C | 18.54 mm |
| Annual | 5.7 °C | 22.3 °C | 485.4 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 | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |