Stevenson, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9 °C (low) to 21.8 °C (high). Annual precipitation averages 1463 Millimeters. Stevenson 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 | -1.4 °C | 10.1 °C | 138.94 mm |
| February | 0.3 °C | 12.7 °C | 142.49 mm |
| March | 3.8 °C | 17.3 °C | 130.81 mm |
| April | 7.9 °C | 22.3 °C | 126.75 mm |
| May | 13.2 °C | 26.2 °C | 109.47 mm |
| June | 17.8 °C | 29.9 °C | 111 mm |
| July | 19.9 °C | 31.6 °C | 131.83 mm |
| August | 19.3 °C | 31.3 °C | 94.74 mm |
| September | 15.6 °C | 28.7 °C | 108.46 mm |
| October | 8.8 °C | 23 °C | 89.15 mm |
| November | 2.8 °C | 16.7 °C | 123.44 mm |
| December | 0.2 °C | 11.9 °C | 155.96 mm |
| Annual | 9 °C | 21.8 °C | 1463.04 mm |
| 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 : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |