Hart, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 42.8 °F (low) to 71.9 °F (high). Annual precipitation averages 18 Inches. Hart 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 | 22.6 °F | 52.1 °F | 0.51 in. |
| February | 25.4 °F | 56.2 °F | 0.45 in. |
| March | 32.6 °F | 64.5 °F | 1.02 in. |
| April | 40.1 °F | 72.3 °F | 1.16 in. |
| May | 50.9 °F | 80.5 °F | 2.41 in. |
| June | 60.7 °F | 88.6 °F | 2.7 in. |
| July | 64.1 °F | 90.6 °F | 2.16 in. |
| August | 62.8 °F | 89.2 °F | 2.41 in. |
| September | 55.4 °F | 82.5 °F | 2.01 in. |
| October | 43.3 °F | 73.1 °F | 1.67 in. |
| November | 31.4 °F | 61.3 °F | 0.81 in. |
| December | 24.2 °F | 52.3 °F | 0.69 in. |
| Annual | 42.8 °F | 71.9 °F | 18 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 7a : 0°F to 5°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 |