Clay County, Missouri
Local growing conditions for Clay County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 18 ZIP codes in our data.
Hardiness zones in Clay County
Clay County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Clay County for its live forecast, frost dates, and planting calendar:
Smithville 64089
Excelsior Springs 64024
Holt 64048
Kearney 64060
Liberty 64068
Missouri City 64072
North Kansas City 64116
Kansas City 64117
Gladstone 64118
Kansas City 64119
Kansas City 64155
Kansas City 64156
Kansas City 64157
Kansas City 64158
Kansas City 64161
Kansas City 64165
Kansas City 64166
Kansas City 64167
More for Missouri
- Agriculture in Missouri
- Frost dates across Missouri
- 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.