Mena, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.8 °F (low) to 71.5 °F (high). Annual precipitation averages 62.4 Inches. Mena is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.4 °F | 50.2 °F | 4.02 in. |
| February | 33.3 °F | 54.7 °F | 4.14 in. |
| March | 40.5 °F | 63.0 °F | 5.49 in. |
| April | 48.3 °F | 71.8 °F | 6.25 in. |
| May | 58.2 °F | 78.4 °F | 7.27 in. |
| June | 66.2 °F | 86.4 °F | 4.66 in. |
| July | 69.6 °F | 90.8 °F | 5.05 in. |
| August | 68.1 °F | 90.7 °F | 4.2 in. |
| September | 60.7 °F | 84.1 °F | 4.82 in. |
| October | 49.8 °F | 73.5 °F | 5.5 in. |
| November | 40.2 °F | 61.6 °F | 5.62 in. |
| December | 32.3 °F | 52.3 °F | 5.4 in. |
| Annual | 49.8 °F | 71.5 °F | 62.42 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |