Hallsburg, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.7 °F (low) to 77.5 °F (high). Annual precipitation averages 38.2 Inches. Hallsburg is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 36.6 °F | 58.4 °F | 2.84 in. |
| February | 40.4 °F | 62.5 °F | 2.74 in. |
| March | 47.5 °F | 69.2 °F | 3.6 in. |
| April | 54.5 °F | 76.6 °F | 3.23 in. |
| May | 63.7 °F | 83.7 °F | 4.58 in. |
| June | 70.9 °F | 91.1 °F | 3.45 in. |
| July | 73.6 °F | 95.0 °F | 1.71 in. |
| August | 73.3 °F | 95.6 °F | 2.44 in. |
| September | 66.7 °F | 89.7 °F | 3.12 in. |
| October | 56.4 °F | 79.9 °F | 4.28 in. |
| November | 46.5 °F | 68.5 °F | 3.04 in. |
| December | 38.7 °F | 60.1 °F | 3.15 in. |
| Annual | 55.7 °F | 77.5 °F | 38.18 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |