Amherst, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 43.5 °F (low) to 73.8 °F (high). Annual precipitation averages 18 Inches. Amherst 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 | 23.5 °F | 53.8 °F | 0.57 in. |
| February | 26.3 °F | 58.4 °F | 0.53 in. |
| March | 33.4 °F | 66.4 °F | 1.04 in. |
| April | 40.7 °F | 74.4 °F | 1.03 in. |
| May | 51.6 °F | 82.6 °F | 2.16 in. |
| June | 61.5 °F | 90.8 °F | 2.78 in. |
| July | 64.7 °F | 92.1 °F | 2.2 in. |
| August | 63.2 °F | 90.7 °F | 2.36 in. |
| September | 55.9 °F | 83.9 °F | 2.36 in. |
| October | 43.8 °F | 74.6 °F | 1.53 in. |
| November | 32.0 °F | 63.0 °F | 0.78 in. |
| December | 25.1 °F | 54.5 °F | 0.69 in. |
| Annual | 43.5 °F | 73.8 °F | 18.03 in. |
| 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 : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |