Detroit, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.3 °F (low) to 58.8 °F (high). Annual precipitation averages 36.6 Inches. Detroit is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.6 °F | 32.2 °F | 2.75 in. |
| February | 20.9 °F | 35.0 °F | 2.28 in. |
| March | 28.2 °F | 44.5 °F | 2.57 in. |
| April | 38.8 °F | 57.5 °F | 3.2 in. |
| May | 50.0 °F | 69.3 °F | 4.01 in. |
| June | 60.3 °F | 79.1 °F | 3.4 in. |
| July | 64.8 °F | 83.2 °F | 3.6 in. |
| August | 63.5 °F | 81.4 °F | 3.44 in. |
| September | 56.3 °F | 74.8 °F | 3.04 in. |
| October | 44.6 °F | 61.9 °F | 3.04 in. |
| November | 34.6 °F | 48.6 °F | 2.74 in. |
| December | 26.0 °F | 37.5 °F | 2.48 in. |
| Annual | 42.3 °F | 58.8 °F | 36.55 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |