Deconstruct SunMichigan Hardiness Zones
Michigan covers USDA plant hardiness zones 4a to 6b on the 2023 map, so its coldest areas average −30 to −25 °F on the coldest winter night. Find your zone by ZIP code, or pick a city below for its zone, sunrise and daylight by month.
Michigan hardiness zone map
This is not the official USDA Plant Hardiness Zone Map. Zones are derived from the official 2023 dataset, resampled to about 2 km. Dots mark cities with their own page.
Source: USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture, planthardiness.ars.usda.gov. Underlying data © PRISM Group, Oregon State University, prism.oregonstate.edu, accessed 2026-08-30.
Zones and daylight by city
| City | Zone | Coldest night | Longest day | Shortest day |
|---|---|---|---|---|
| Detroit | 6b | −5 to 0 °F | 15h 17m | 9h 04m |
| Grand Rapids | 6a | −10 to −5 °F | 15h 22m | 9h 00m |
| Warren | 6b | −5 to 0 °F | 15h 18m | 9h 04m |
| Sterling Heights | 6b | −5 to 0 °F | 15h 19m | 9h 03m |
| Ann Arbor | 6a | −10 to −5 °F | 15h 17m | 9h 05m |
| Lansing | 6a | −10 to −5 °F | 15h 20m | 9h 02m |
| Flint | 6a | −10 to −5 °F | 15h 22m | 9h 00m |
| Dearborn | 6b | −5 to 0 °F | 15h 17m | 9h 05m |
| Kalamazoo | 6a | −10 to −5 °F | 15h 17m | 9h 05m |
| Traverse City | 6b | −5 to 0 °F | 15h 35m | 8h 48m |
| Marquette | 5b | −15 to −10 °F | 15h 50m | 8h 34m |
Gardening in Michigan?
Your zone says what survives winter. Deconstruct Sun measures how many hours of direct sun your exact spot gets, so you can pick plants that thrive. Free on iPhone.
Questions
What hardiness zones are in Michigan?
Michigan spans USDA zones 4a to 6b on the 2023 map. Among its larger cities, Marquette is coldest (zone 5b) and Detroit is warmest (zone 6b).
How do I find my exact zone in Michigan?
Enter your ZIP code in the hardiness zone lookup on this site. It reads the 2023 USDA data for that ZIP and warns you if you are near a zone boundary.
How much sun do gardens in Michigan get?
In Detroit, an open spot gets up to 15.3 hours of daylight in June but only 9.1 in December. Trees and buildings cut that down, especially in winter. The Deconstruct Sun app measures the real direct-sun hours for one exact spot.