Lewis County, Washington
Local growing conditions for Lewis County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 21 ZIP codes in our data.
Hardiness zones in Lewis County
Lewis County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Lewis County for its live forecast, frost dates, and planting calendar:
Morton 98336
Ashford 98355
Morton 98356
Packwood 98361
Packwood 98377
Centralia 98531
Chehalis 98532
Morton 98533
Ryderwood 98538
Pe Ell 98539
Onalaska 98542
Centralia 98544
Mossyrock 98564
Napavine 98565
Onalaska 98570
Pe Ell 98572
Onalaska 98582
Mossyrock 98585
Toledo 98591
Vader 98593
Winlock 98596
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.