Buchanan County, Missouri
Local growing conditions for Buchanan County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 10 ZIP codes in our data.
Hardiness zones in Buchanan County
Buchanan County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Buchanan County for its live forecast, frost dates, and planting calendar:
Agency 64401
De Kalb 64440
Easton 64443
Faucett 64448
Rushville 64484
St. Joseph 64501
St. Joseph 64503
St. Joseph 64504
St. Joseph 64506
St. Joseph 64507
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.