Altus, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.6 °F (low) to 71.4 °F (high). Annual precipitation averages 50.6 Inches. Altus 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 | 28.9 °F | 49.0 °F | 3.58 in. |
| February | 32.1 °F | 53.9 °F | 3.08 in. |
| March | 39.6 °F | 62.3 °F | 4.53 in. |
| April | 48.2 °F | 71.8 °F | 4.71 in. |
| May | 57.8 °F | 79.1 °F | 5.91 in. |
| June | 66.3 °F | 87.1 °F | 4.15 in. |
| July | 69.9 °F | 91.8 °F | 3.81 in. |
| August | 69.0 °F | 91.6 °F | 3.63 in. |
| September | 61.8 °F | 84.5 °F | 3.9 in. |
| October | 50.1 °F | 73.6 °F | 4.35 in. |
| November | 39.6 °F | 61.3 °F | 4.93 in. |
| December | 31.6 °F | 50.9 °F | 4.04 in. |
| Annual | 49.6 °F | 71.4 °F | 50.62 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |