Jasper County, Iowa
Local growing conditions for Jasper County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 12 ZIP codes in our data.
Hardiness zones in Jasper County
Jasper County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Jasper County for its live forecast, frost dates, and planting calendar:
Newton 50208
Baxter 50028
Colfax 50054
Mingo 50127
Kellogg 50135
Sully 50137
Lynnville 50153
Mingo 50168
Monroe 50170
Prairie City 50228
Reasnor 50232
Sully 50251
More for Iowa
- Agriculture in Iowa
- Frost dates across Iowa
- 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.