Morton County, North Dakota
Local growing conditions for Morton County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 8 ZIP codes in our data.
Hardiness zones in Morton County
Morton County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Morton County for its live forecast, frost dates, and planting calendar:
Hebron 58638
Almont 58520
Flasher 58535
Mandan 58554
New Salem 58563
Bismarck 58566
Solen 58570
Glen Ullin 58631
More for North Dakota
- Agriculture in North Dakota
- Frost dates across North Dakota
- USDA hardiness zones explained
- Planting calendar by ZIP code
← All counties in North Dakota
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.