Lake County, Illinois
Local growing conditions for Lake County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 28 ZIP codes in our data.
Hardiness zones in Lake County
Lake County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Lake County for its live forecast, frost dates, and planting calendar:
Antioch 60002
Riverwoods 60015
Fox Lake 60020
Grayslake 60030
Gurnee 60031
Highland Park 60035
Highwood 60040
Fox Lake 60041
Island Lake 60042
Lake Bluff 60044
Lake Forest 60045
Lake Villa 60046
Kildeer 60047
Libertyville 60048
Mundelein 60060
Vernon Hills 60061
North Chicago 60064
Lincolnshire 60069
Round Lake 60073
Pleasant Prairie 60075
Wadsworth 60083
Wauconda 60084
Waukegan 60085
Waukegan 60087
More for Illinois
- Agriculture in Illinois
- Frost dates across Illinois
- 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.