Columbia County, Pennsylvania
Local growing conditions for Columbia County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 13 ZIP codes in our data.
Hardiness zones in Columbia County
Columbia County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Columbia County for its live forecast, frost dates, and planting calendar:
Jamison City 17814
Lightstreet 17815
Slabtown 17820
Elysburg 17824
Iola 17846
Numidia 17858
Rohrsburg 17859
New Columbus 17878
Wilburton Number Two 17888
Aristes 17920
Locustdale 17945
Foundryville 18603
Mifflinville 18631
More for Pennsylvania
- Agriculture in Pennsylvania
- Frost dates across Pennsylvania
- USDA hardiness zones explained
- Planting calendar by ZIP code
← All counties in Pennsylvania
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.