Millport, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.5 °F (low) to 74.7 °F (high). Annual precipitation averages 56.3 Inches. Millport is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 32.7 °F | 54.1 °F | 5.39 in. |
| February | 35.8 °F | 58.7 °F | 5.58 in. |
| March | 42.6 °F | 67.1 °F | 5.31 in. |
| April | 50.4 °F | 75.2 °F | 5.43 in. |
| May | 59.5 °F | 82.6 °F | 4.09 in. |
| June | 67.4 °F | 89.0 °F | 4.73 in. |
| July | 70.7 °F | 91.8 °F | 4.72 in. |
| August | 69.7 °F | 91.7 °F | 4.25 in. |
| September | 63.2 °F | 86.9 °F | 3.39 in. |
| October | 50.9 °F | 77.1 °F | 3.63 in. |
| November | 40.2 °F | 65.2 °F | 4.34 in. |
| December | 35.3 °F | 56.5 °F | 5.46 in. |
| Annual | 51.5 °F | 74.7 °F | 56.32 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |