Texarkana, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.2 °F (low) to 74.8 °F (high). Annual precipitation averages 51.7 Inches. Texarkana is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.9 °F | 54.7 °F | 4.1 in. |
| February | 37.1 °F | 58.6 °F | 4.54 in. |
| March | 44.2 °F | 66.9 °F | 4.73 in. |
| April | 51.9 °F | 74.6 °F | 4.81 in. |
| May | 61.5 °F | 81.8 °F | 5.2 in. |
| June | 69.1 °F | 89.1 °F | 4.06 in. |
| July | 72.4 °F | 93.2 °F | 3.34 in. |
| August | 71.2 °F | 93.2 °F | 2.91 in. |
| September | 64.6 °F | 87.2 °F | 3.95 in. |
| October | 52.8 °F | 76.7 °F | 4.76 in. |
| November | 42.9 °F | 65.1 °F | 4.23 in. |
| December | 36.2 °F | 56.6 °F | 5.04 in. |
| Annual | 53.2 °F | 74.8 °F | 51.67 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |