St. Joseph County, Indiana
Local growing conditions for St. Joseph County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 20 ZIP codes in our data.
Hardiness zones in St. Joseph County
St. Joseph County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in St. Joseph County for its live forecast, frost dates, and planting calendar:
Notre Dame 46556
Notre Dame 46624
Granger 46530
Lakeville 46536
Mishawaka 46544
Mishawaka 46545
New Carlisle 46552
North Liberty 46554
Osceola 46561
Wyatt 46595
South Bend 46601
South Bend 46613
South Bend 46614
South Bend 46615
South Bend 46616
South Bend 46617
South Bend 46619
South Bend 46628
Granger 46635
Roseland 46637
More for Indiana
- Agriculture in Indiana
- Frost dates across Indiana
- 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.