Iuka, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49 °F (low) to 71.6 °F (high). Annual precipitation averages 59.6 Inches. Iuka is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.6 °F | 50.2 °F | 5.23 in. |
| February | 32.6 °F | 54.9 °F | 5.36 in. |
| March | 39.6 °F | 63.5 °F | 5.69 in. |
| April | 48.0 °F | 72.8 °F | 5.46 in. |
| May | 57.3 °F | 79.8 °F | 5.58 in. |
| June | 65.4 °F | 86.6 °F | 4.39 in. |
| July | 68.5 °F | 89.5 °F | 4.63 in. |
| August | 67.4 °F | 89.2 °F | 4.56 in. |
| September | 60.6 °F | 84.2 °F | 4.42 in. |
| October | 48.4 °F | 74.0 °F | 3.77 in. |
| November | 37.9 °F | 62.3 °F | 4.38 in. |
| December | 32.8 °F | 52.7 °F | 6.12 in. |
| Annual | 49 °F | 71.6 °F | 59.59 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |