St. Croix County, Wisconsin
Local growing conditions for St. Croix County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 11 ZIP codes in our data.
Hardiness zones in St. Croix County
St. Croix County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in St. Croix County for its live forecast, frost dates, and planting calendar:
Baldwin 54002
Deer Park 54007
Emerald 54013
Hammond 54015
Hudson 54016
New Richmond 54017
Roberts 54023
Somerset 54025
Wilson 54027
Woodville 54028
Houlton 54082
More for Wisconsin
- Agriculture in Wisconsin
- Frost dates across Wisconsin
- 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.