Warren County, New Jersey
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:
Allamuchy 07820
Brookfield 07823
Blairstown 07825
Anderson 07831
Hainesburg 07832
Delaware 07833
Great Meadows 07838
Hackettstown 07840
Hope 07844
Johnsonburg 07846
Oxford 07863
Port Murray 07865
Vienna 07880
Brass Castle 07882
Lopatcong Overlook 08865
Stewartsville 08886
More for New Jersey
- Agriculture in New Jersey
- Frost dates across New Jersey
- 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.