Coos County, New Hampshire
Local growing conditions for Coos County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 14 ZIP codes in our data.
Hardiness zones in Coos County
Coos County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Coos County for its live forecast, frost dates, and planting calendar:
Lancaster 03584
Berlin 03570
Berlin 03575
Colebrook 03576
Gorham 03581
Groveton 03582
Berlin 03583
Berlin 03588
Groveton 03590
Beecher Falls 03592
Gorham 03593
Whitefield 03595
Colebrook 03597
Whitefield 03598
More for New Hampshire
- Agriculture in New Hampshire
- Frost dates across New Hampshire
- USDA hardiness zones explained
- Planting calendar by ZIP code
← All counties in New Hampshire
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.