Mackinac County, Michigan
Local growing conditions for Mackinac County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 10 ZIP codes in our data.
Hardiness zones in Mackinac County
Mackinac County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Mackinac County for its live forecast, frost dates, and planting calendar:
Mackinac Island 49719
Mackinac Island 49745
Mackinac Island 49757
St. Ignace 49760
Naubinway 49762
Mackinac Island 49775
St. Ignace 49781
Naubinway 49820
Naubinway 49827
Naubinway 49838
More for Michigan
- Agriculture in Michigan
- Frost dates across Michigan
- USDA hardiness zones explained
- Planting calendar by ZIP code
County growing conditions are compiled from our ZIP-code database, USDA hardiness-zone data, and NOAA climate normals. Conditions vary within a county by elevation and local microclimate. Page updated Aug 4, 2026.