Gainesville, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gainesville, a community in Prince William County, Virginia.
Today
86°F
Partly Sunny
Partly sunny, with a high near 86. Northeast wind around 6 mph.
7-day forecast for Gainesville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Partly Sunny | 6 mph NE | 9% |
| Tonight | 69°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 6 mph E | 76% |
| Wednesday | 85°F | Showers And Thunderstorms Likely | 1 to 7 mph SE | 67% |
| Wednesday Night | 71°F | Chance Showers And Thunderstorms then Mostly Cloudy | 6 mph S | 53% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 to 12 mph S | 17% |
| Thursday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph SW | 17% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SW | 48% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 48% |
| Saturday | 89°F | Partly Sunny then Showers And Thunderstorms Likely | 1 to 5 mph SW | 59% |
| Saturday Night | 69°F | Showers And Thunderstorms Likely | 1 to 5 mph SW | 59% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 3 mph W | 20% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 20% |
| Monday | 92°F | Mostly Sunny | 1 to 5 mph W | 9% |
| Monday Night | 71°F | Partly Cloudy | 5 mph W | 14% |
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
7a
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
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 Aug 4, 2026.