Washington County, Rhode Island
Local growing conditions for Washington County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 20 ZIP codes in our data.
Hardiness zones in Washington County
Washington County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Washington County for its live forecast, frost dates, and planting calendar:
Wakefield-Peace Dale 02879
Kingston 02881
Westerly 02891
Carolina 02892
Ashaway 02804
Quonochontaug 02807
Bradford 02808
Carolina 02812
Charlestown 02813
Wyoming 02822
Hope Valley 02832
Hopkinton 02833
Carolina 02836
Warwick 02852
Hope Valley 02873
Kingston 02874
Carolina 02875
Narragansett Pier 02882
Carolina 02894
Wyoming 02898
More for Rhode Island
- Agriculture in Rhode Island
- Frost dates across Rhode Island
- USDA hardiness zones explained
- Planting calendar by ZIP code
← All counties in Rhode Island
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.