Gainesville, VA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Gainesville, a community in Prince William County, Virginia.

Tonight

51°F

Mostly Clear

Mostly clear, with a low around 51. South wind around 3 mph.

7-day forecast for Gainesville

When	Temp	Forecast	Wind	Precip
Tonight	51°F	Mostly Clear	3 mph S	2%
Wednesday	74°F	Mostly Sunny	3 to 12 mph S	2%
Wednesday Night	61°F	Mostly Cloudy then Chance Light Rain	6 to 9 mph S	53%
Thursday	75°F	Chance Light Rain	8 to 12 mph S	38%
Thursday Night	61°F	Chance Light Rain	2 to 7 mph SW	50%
Friday	70°F	Rain Likely	1 to 5 mph N	65%
Friday Night	51°F	Light Rain Likely	1 to 6 mph NW	65%
Saturday	65°F	Mostly Sunny	7 to 10 mph NW	11%
Saturday Night	43°F	Mostly Clear	5 to 8 mph NW	11%
Sunday	62°F	Mostly Sunny	6 mph NW	5%
Sunday Night	42°F	Partly Cloudy then Slight Chance Light Rain	6 mph NW	18%
Monday	62°F	Slight Chance Light Rain	6 to 14 mph NW	21%
Monday Night	39°F	Slight Chance Light Rain	7 mph W	21%
Tuesday	65°F	Sunny	6 to 10 mph W	9%

Forecast source: National Weather Service (api.weather.gov) for Gainesville (38.793, -77.642). Updated through the day.

Growing snapshot for Gainesville

Last spring frost

Apr 12

First fall frost

Oct 27

Growing season

197 days

Hardiness zone

More local growing data for Gainesville: nearby ZIP 20155 weather · frost dates · planting calendar · Virginia frost dates

Nearby towns & communities

Buckhall Bull Run Bull Run Mountain Estates Cherry Hill County Center Dale City Dumfries Haymarket Independent Hill Innovation Lake Ridge Laurel Hill Leesylvania Linton Hall Manassas Park Montclair Nokesville Occoquan Potomac Mills Quantico Quantico Base Sudley Triangle Woodbridge

All Virginia locations ›

Climate data from the nearest NOAA station, Manassas, Va (8.6 mi from Gainesville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.