Waldo County, Maine
Local growing conditions for Waldo 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 Waldo County
Waldo County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Waldo County for its live forecast, frost dates, and planting calendar:
Augusta 04354
Winterport 04438
Winterport 04496
Belfast 04848
Belfast 04849
Belfast 04915
Unity 04921
Clinton 04922
Belfast 04941
Belfast 04949
Belfast 04951
Belfast 04952
Belfast 04973
Searsport 04974
Searsport 04981
Unity 04986
Unity 04987
Unity 04988
More for Maine
- Agriculture in Maine
- Frost dates across Maine
- 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.