Sanilac County, Michigan
Local growing conditions for Sanilac County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 18 ZIP codes in our data.
Hardiness zones in Sanilac County
Sanilac County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Sanilac County for its live forecast, frost dates, and planting calendar:
Applegate 48401
Snover 48410
Brown City 48416
Carsonville 48419
Croswell 48422
Snover 48426
Deckerville 48427
Forestville 48434
Lexington 48450
Marlette 48453
Melvin 48454
Minden City 48456
Minden City 48465
Peck 48466
Port Sanilac 48469
Sandusky 48471
Snover 48472
Ubly 48475
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.