Mignon, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.2 °F (low) to 74.8 °F (high). Annual precipitation averages 56.8 Inches. Mignon 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 32.3 °F | 55.5 °F | 5.38 in. |
| February | 35.2 °F | 60.1 °F | 5.69 in. |
| March | 41.3 °F | 67.9 °F | 5.37 in. |
| April | 48.0 °F | 75.5 °F | 4.91 in. |
| May | 57.4 °F | 82.4 °F | 4.33 in. |
| June | 65.4 °F | 88.1 °F | 4.97 in. |
| July | 68.9 °F | 91.1 °F | 4.68 in. |
| August | 67.8 °F | 90.4 °F | 4.41 in. |
| September | 62.1 °F | 86.2 °F | 3.81 in. |
| October | 49.7 °F | 76.8 °F | 3.32 in. |
| November | 38.9 °F | 65.9 °F | 4.67 in. |
| December | 34.8 °F | 58.0 °F | 5.28 in. |
| Annual | 50.2 °F | 74.8 °F | 56.82 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 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |