Sullivan County, New Hampshire
Local growing conditions for Sullivan County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 15 ZIP codes in our data.
Hardiness zones in Sullivan County
Sullivan County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Sullivan County for its live forecast, frost dates, and planting calendar:
Newport 03773
Bradford 03280
New London 03284
Charlestown 03601
Charlestown 03603
Newport 03605
Charlestown 03607
Claremont 03743
Claremont 03745
New London 03751
Newport 03752
Lebanon 03753
Lebanon 03770
Lebanon 03781
Newport 03782
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.