Whatcom County, Washington
Local growing conditions for Whatcom 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 Whatcom County
Whatcom County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Whatcom County for its live forecast, frost dates, and planting calendar:
Acme 98220
Bellingham 98225
Bellingham 98226
Bellingham 98229
Birch Bay 98230
Custer 98240
Glacier 98244
Everson 98247
Ferndale 98248
Marietta-Alderwood 98262
Lynden 98264
Maple Falls 98266
Nooksack 98276
Point Roberts 98281
Marblemount 98283
Peaceful Valley 98295
More for Washington
- Agriculture in Washington
- Frost dates across Washington
- 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.