Winnebago County, Wisconsin
Local growing conditions for Winnebago 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 Winnebago County
Winnebago County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Winnebago County for its live forecast, frost dates, and planting calendar:
Oshkosh 54901
Oshkosh 54902
Oshkosh 54904
Butte des Morts 54927
Winchester 54947
Fox Crossing 54956
Omro 54963
Waukau 54964
Waukau 54980
Oshkosh 54985
Winneconne 54986
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.