Allegan County, Michigan
Local growing conditions for Allegan County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 15 ZIP codes in our data.
Hardiness zones in Allegan County
Allegan County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Allegan County for its live forecast, frost dates, and planting calendar:
Holland 49423
Allegan 49010
Martin 49070
Otsego 49078
Plainwell 49080
Dorr 49323
Hopkins 49328
Dorr 49335
Martin 49344
Wayland 49348
Douglas 49406
Fennville 49408
Holland 49419
Fennville 49450
Saugatuck 49453
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.