Day County, South Dakota

Local growing conditions for Day County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 7 ZIP codes in our data.

Hardiness zones in Day County

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

Zone 4 (7)

Local weather & frost dates

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

Andover 57422 Bristol 57219 Grenville 57239 Roslyn 57261 Waubay 57273 Webster 57274 Pierpont 57468

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.