Douglas County, South Dakota

Local growing conditions for Douglas County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 5 ZIP codes in our data.

Hardiness zones in Douglas County

Douglas County spans these USDA plant hardiness zones (by number of ZIP codes):

Zone 5 (5)

Local weather & frost dates

Open any community in Douglas County for its live forecast, frost dates, and planting calendar:

Armour 57313 Corsica 57328 Delmont 57330 New Holland 57344 New Holland 57364

More for South Dakota

Agriculture in South Dakota
Frost dates across South Dakota
USDA hardiness zones explained
Planting calendar by ZIP code

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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.