Fairfax County, Virginia
Local growing conditions for Fairfax County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 43 ZIP codes in our data.
Hardiness zones in Fairfax County
Fairfax County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Fairfax County for its live forecast, frost dates, and planting calendar:
Oakton 22181
Bull Run 20120
Bull Run 20121
Clifton 20124
Chantilly 20151
Herndon 20170
Floris 20171
Reston 20190
Reston 20191
Reston 20194
Annandale 22003
Burke Centre 22015
Dunn Loring 22027
George Mason 22030
Mantua 22031
Kings Park West 22032
Greenbriar 22033
Fair Oaks 22035
South Run 22039
Bailey's Crossroads 22041
West Falls Church 22042
Pimmit Hills 22043
Lake Barcroft 22044
Fort Belvoir 22060
More for Virginia
- Agriculture in Virginia
- Frost dates across Virginia
- 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.