Waukesha County, Wisconsin
Local growing conditions for Waukesha County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 26 ZIP codes in our data.
Hardiness zones in Waukesha County
Waukesha County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Waukesha County for its live forecast, frost dates, and planting calendar:
Brookfield 53005
Butler 53007
Delafield 53018
Merton 53029
Brookfield 53045
Lannon 53046
Menomonee Falls 53051
Okauchee Lake 53058
Oconomowoc 53066
Okauchee Lake 53069
Pewaukee 53072
Lisbon 53089
Vernon 53103
Dousman 53118
Eagle 53119
Elm Grove 53122
North Prairie 53127
New Berlin 53146
Mukwonago 53149
Muskego 53150
New Berlin 53151
North Prairie 53153
Wales 53183
Waukesha 53186
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.