Hedley, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 7.9 °C (low) to 23.2 °C (high). Annual precipitation averages 614.7 Millimeters. Hedley 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.5 °C | 11.6 °C | 19.56 mm |
| February | -1.9 °C | 13.7 °C | 21.84 mm |
| March | 2.1 °C | 18.6 °C | 38.1 mm |
| April | 6.7 °C | 23.2 °C | 55.37 mm |
| May | 12.4 °C | 27.5 °C | 86.87 mm |
| June | 17.8 °C | 32.1 °C | 88.9 mm |
| July | 20 °C | 34.5 °C | 61.72 mm |
| August | 19.2 °C | 33.9 °C | 74.42 mm |
| September | 14.9 °C | 29.6 °C | 63.5 mm |
| October | 8.3 °C | 23.9 °C | 52.58 mm |
| November | 1.7 °C | 17.3 °C | 28.19 mm |
| December | -2.8 °C | 11.9 °C | 23.62 mm |
| Annual | 7.9 °C | 23.2 °C | 614.67 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |