Detroit, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.4 °C (low) to 23.7 °C (high). Annual precipitation averages 1225.8 Millimeters. Detroit is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.3 °C | 12.2 °C | 82.8 mm |
| February | 2.3 °C | 14.6 °C | 94.74 mm |
| March | 6.4 °C | 19 °C | 113.79 mm |
| April | 10.5 °C | 23.3 °C | 112.78 mm |
| May | 15.9 °C | 27.2 °C | 134.62 mm |
| June | 20.6 °C | 31.8 °C | 98.55 mm |
| July | 22.3 °C | 34.1 °C | 78.23 mm |
| August | 21.7 °C | 34.4 °C | 70.36 mm |
| September | 18 °C | 30.8 °C | 101.6 mm |
| October | 11.5 °C | 24.9 °C | 119.38 mm |
| November | 5.9 °C | 18.5 °C | 104.14 mm |
| December | 1.6 °C | 13.4 °C | 114.81 mm |
| Annual | 11.4 °C | 23.7 °C | 1225.8 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |