Detroit, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10 °C (low) to 23 °C (high). Annual precipitation averages 1534.2 Millimeters. Detroit 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 | -0.7 °C | 11.2 °C | 139.45 mm |
| February | 1.1 °C | 13.9 °C | 143.26 mm |
| March | 4.8 °C | 18.8 °C | 135.89 mm |
| April | 9.3 °C | 23.4 °C | 149.1 mm |
| May | 14.6 °C | 27.4 °C | 139.95 mm |
| June | 18.9 °C | 31.1 °C | 123.95 mm |
| July | 20.8 °C | 32.7 °C | 127.76 mm |
| August | 20.4 °C | 32.7 °C | 108.71 mm |
| September | 16.4 °C | 29.9 °C | 99.06 mm |
| October | 9.7 °C | 24.2 °C | 94.74 mm |
| November | 3.7 °C | 17.6 °C | 115.57 mm |
| December | 0.9 °C | 12.7 °C | 156.72 mm |
| Annual | 10 °C | 23 °C | 1534.16 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |