Farmington Hills, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.2 °C (low) to 14.5 °C (high). Annual precipitation averages 848.3 Millimeters. Farmington Hills is located in USDA Plant Hardiness Zone 6a. 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 | -8.4 °C | -0.5 °C | 58.93 mm |
| February | -7.8 °C | 1.2 °C | 45.97 mm |
| March | -3.4 °C | 6.9 °C | 57.4 mm |
| April | 2.4 °C | 13.9 °C | 76.2 mm |
| May | 8.8 °C | 20.7 °C | 97.28 mm |
| June | 14.3 °C | 25.9 °C | 80.26 mm |
| July | 16.6 °C | 28.2 °C | 81.28 mm |
| August | 15.9 °C | 27.2 °C | 82.04 mm |
| September | 11.8 °C | 23.6 °C | 80.01 mm |
| October | 5.4 °C | 16.1 °C | 71.37 mm |
| November | 0 °C | 8.8 °C | 62.74 mm |
| December | -4.8 °C | 2.3 °C | 54.86 mm |
| Annual | 4.2 °C | 14.5 °C | 848.34 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 6a : -23.3°C to -20.6°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 |