Dimmitt, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 41.9 °F (low) to 71.7 °F (high). Annual precipitation averages 19.6 Inches. Dimmitt is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.0 °F | 51.4 °F | 0.56 in. |
| February | 24.7 °F | 55.7 °F | 0.45 in. |
| March | 31.6 °F | 64.0 °F | 1.09 in. |
| April | 38.7 °F | 71.8 °F | 1.06 in. |
| May | 49.4 °F | 80.2 °F | 2.51 in. |
| June | 59.5 °F | 89.0 °F | 3.31 in. |
| July | 63.4 °F | 91.0 °F | 2.38 in. |
| August | 62.2 °F | 89.7 °F | 2.56 in. |
| September | 54.8 °F | 82.6 °F | 2.26 in. |
| October | 42.7 °F | 72.5 °F | 1.91 in. |
| November | 30.6 °F | 60.6 °F | 0.73 in. |
| December | 23.3 °F | 51.6 °F | 0.76 in. |
| Annual | 41.9 °F | 71.7 °F | 19.58 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |