Washington County, Maryland
Local growing conditions for Washington County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 18 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:
Maugansville 21767
Pecktonville 21711
Boonsboro 21713
Brownsville 21715
Fort Ritchie 21719
Clear Spring 21722
St. James 21733
Funkstown 21734
Hagerstown 21740
Leitersburg 21742
St. James 21746
Bath (Berkeley Springs) 21750
Eakles Mill 21756
Rohrersville 21779
St. James 21781
Sharpsburg 21782
Smithsburg 21783
Williamsport 21795
More for Maryland
- Agriculture in Maryland
- Frost dates across Maryland
- 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.