Warren County, Pennsylvania
Local growing conditions for Warren County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 16 ZIP codes in our data.
Hardiness zones in Warren County
Warren County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Warren County for its live forecast, frost dates, and planting calendar:
Sugar Grove 16312
Warren 16365
Sheffield 16313
Starbrick 16329
Youngsville 16340
Russell 16345
Sheffield 16347
Sugar Grove 16350
Tidioute 16351
Clarendon 16352
Youngsville 16371
Bear Lake 16402
Columbus 16405
Youngsville 16416
Tidioute 16420
Columbus 16436
More for Pennsylvania
- Agriculture in Pennsylvania
- Frost dates across Pennsylvania
- USDA hardiness zones explained
- Planting calendar by ZIP code
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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.