Marshall, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.4 °F (low) to 69.7 °F (high). Annual precipitation averages 47.9 Inches. Marshall is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.3 °F | 47.0 °F | 3.14 in. |
| February | 29.9 °F | 51.9 °F | 3.32 in. |
| March | 37.5 °F | 60.3 °F | 4.73 in. |
| April | 46.6 °F | 70.3 °F | 5.23 in. |
| May | 56.1 °F | 77.3 °F | 4.75 in. |
| June | 64.5 °F | 85.5 °F | 4.15 in. |
| July | 68.4 °F | 89.9 °F | 3.47 in. |
| August | 66.7 °F | 89.7 °F | 3.13 in. |
| September | 58.7 °F | 82.6 °F | 3.75 in. |
| October | 47.3 °F | 71.7 °F | 3.93 in. |
| November | 37.5 °F | 59.8 °F | 4.5 in. |
| December | 29.5 °F | 50.0 °F | 3.79 in. |
| Annual | 47.4 °F | 69.7 °F | 47.89 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |