Edmonson, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 6.5 °C (low) to 22.4 °C (high). Annual precipitation averages 475.5 Millimeters. Edmonson is located in USDA Plant Hardiness Zone 7b. 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 | -4.7 °C | 11.4 °C | 14.73 mm |
| February | -3.1 °C | 13.7 °C | 13.72 mm |
| March | 0.9 °C | 18.2 °C | 28.96 mm |
| April | 5.1 °C | 22.6 °C | 31.24 mm |
| May | 11.1 °C | 27.2 °C | 63.25 mm |
| June | 16.5 °C | 31.6 °C | 73.91 mm |
| July | 18.3 °C | 32.8 °C | 55.63 mm |
| August | 17.6 °C | 32.1 °C | 59.18 mm |
| September | 13.5 °C | 28.3 °C | 53.59 mm |
| October | 6.8 °C | 23.1 °C | 41.91 mm |
| November | 0.2 °C | 16.5 °C | 20.83 mm |
| December | -3.9 °C | 11.5 °C | 18.54 mm |
| Annual | 6.5 °C | 22.4 °C | 475.49 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 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 |