Lehigh County, Pennsylvania
Local growing conditions for Lehigh County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 28 ZIP codes in our data.
Hardiness zones in Lehigh County
Lehigh County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Lehigh County for its live forecast, frost dates, and planting calendar:
Bethlehem 18018
Breinigsville 18031
Catasauqua 18032
DeSales University 18034
Coopersburg 18036
Egypt 18037
Wescosville 18046
Emmaus 18049
Breinigsville 18051
Hokendauqua 18052
Slatedale 18053
Laurys Station 18059
Alburtis 18062
Schnecksville 18065
New Tripoli 18066
Schnecksville 18069
Schnecksville 18078
Slatedale 18079
Slatedale 18080
Trexlertown 18087
Hereford 18092
Allentown 18101
Allentown 18102
Allentown 18103
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.