Houston, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.2 °F (low) to 72.6 °F (high). Annual precipitation averages 52 Inches. Houston is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 28.5 °F | 50.2 °F | 3.5 in. |
| February | 31.5 °F | 54.9 °F | 3.89 in. |
| March | 39.2 °F | 64.0 °F | 5.08 in. |
| April | 48.1 °F | 72.9 °F | 5.45 in. |
| May | 58.3 °F | 80.2 °F | 5.57 in. |
| June | 66.6 °F | 88.3 °F | 3.72 in. |
| July | 70.0 °F | 92.4 °F | 3.81 in. |
| August | 68.7 °F | 92.2 °F | 3.7 in. |
| September | 60.7 °F | 85.5 °F | 3.67 in. |
| October | 48.6 °F | 75.2 °F | 4.07 in. |
| November | 38.4 °F | 62.4 °F | 4.8 in. |
| December | 31.6 °F | 53.0 °F | 4.78 in. |
| Annual | 49.2 °F | 72.6 °F | 52.04 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |