Belknap County, New Hampshire
Local growing conditions for Belknap County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 13 ZIP codes in our data.
Hardiness zones in Belknap County
Belknap County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Belknap County for its live forecast, frost dates, and planting calendar:
Pittsfield 03218
Belmont 03220
Pittsfield 03225
Meredith 03226
Belmont 03237
Laconia 03246
Laconia 03249
Meredith 03253
New Hampton 03256
Franklin 03269
Alton 03809
Alton 03810
Alton 03837
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.