Dearborn Heights, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.1 °C (low) to 15.2 °C (high). Annual precipitation averages 884.9 Millimeters. Dearborn Heights is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.4 °C | 0.3 °C | 58.42 mm |
| February | -6.8 °C | 2 °C | 53.85 mm |
| March | -2.6 °C | 7.6 °C | 64.77 mm |
| April | 3.3 °C | 14.7 °C | 80.77 mm |
| May | 9.4 °C | 21.3 °C | 94.23 mm |
| June | 15.2 °C | 26.6 °C | 83.06 mm |
| July | 17.6 °C | 28.8 °C | 86.87 mm |
| August | 16.8 °C | 27.8 °C | 82.55 mm |
| September | 12.7 °C | 24.2 °C | 80.52 mm |
| October | 6.2 °C | 16.9 °C | 73.91 mm |
| November | 0.8 °C | 9.5 °C | 66.55 mm |
| December | -3.8 °C | 3.2 °C | 59.44 mm |
| Annual | 5.1 °C | 15.2 °C | 884.94 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |