Gainesville, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gainesville, a community in Prince William County, Virginia.
Tonight
61°F
Isolated Rain Showers then Mostly Cloudy
Isolated rain showers before 8pm. Mostly cloudy, with a low around 61. North wind around 9 mph. Chance of precipitation is 20%.
7-day forecast for Gainesville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Isolated Rain Showers then Mostly Cloudy | 9 mph N | 20% |
| Saturday | 78°F | Partly Sunny | 7 mph NE | 10% |
| Saturday Night | 66°F | Mostly Cloudy | 7 mph SE | 10% |
| Sunday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 6 to 13 mph S | 44% |
| Sunday Night | 65°F | Showers And Thunderstorms Likely | 2 to 8 mph NW | 56% |
| Monday | 74°F | Mostly Cloudy then Chance Rain Showers | 7 to 10 mph NE | 41% |
| Monday Night | 61°F | Rain Showers Likely | 5 to 8 mph NE | 62% |
| Tuesday | 65°F | Rain Showers Likely | 10 mph NE | 66% |
| Tuesday Night | 55°F | Rain Showers Likely | 12 mph NE | 66% |
| Wednesday | 61°F | Rain Showers Likely | 12 mph NE | 59% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 7 to 10 mph N | 54% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 10 mph N | 52% |
| Thursday Night | 54°F | Chance Showers And Thunderstorms | 5 to 8 mph N | 34% |
| Friday | 68°F | Slight Chance Rain Showers | 10 mph N | 24% |
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 Sep 19, 2026.