Bull Run, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bull Run, a community in Fairfax County, Virginia.
Today
79°F
Partly Sunny
Partly sunny, with a high near 79. East wind around 5 mph.
7-day forecast for Bull Run
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Partly Sunny | 5 mph E | 8% |
| Tonight | 65°F | Mostly Cloudy | 6 mph SE | 11% |
| Sunday | 85°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 7 to 12 mph S | 40% |
| Sunday Night | 62°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 12 mph NW | 68% |
| Monday | 71°F | Chance Rain Showers | 7 to 12 mph N | 37% |
| Monday Night | 57°F | Chance Rain Showers | 5 to 8 mph NE | 48% |
| Tuesday | 65°F | Rain Showers Likely | 12 mph NE | 64% |
| Tuesday Night | 54°F | Rain Showers Likely | 12 mph NE | 64% |
| Wednesday | 61°F | Chance Rain Showers | 13 mph NE | 54% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 12 mph NE | 50% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 13 mph NE | 44% |
| Thursday Night | 52°F | Chance Showers And Thunderstorms | 6 to 10 mph N | 40% |
| Friday | 68°F | Slight Chance Rain Showers | 12 mph N | 20% |
| Friday Night | 52°F | Slight Chance Rain Showers | 5 to 10 mph N | 15% |
Forecast source: National Weather Service (api.weather.gov) for Bull Run (38.840, -77.490). Updated through the day.
Growing snapshot for Bull Run
Last spring frost
Apr 15
First fall frost
Oct 24
Growing season
194 days
Hardiness zone
7a
More local growing data for Bull Run: nearby ZIP 20120 weather · frost dates · planting calendar · Virginia frost dates
Nearby towns & communities
Annandale
Bailey's Crossroads
Belle Haven
Braddock
Burke
Burke Centre
Centreville
Chantilly
Clifton
Crosspointe
Difficult Run
Dranesville
Dunn Loring
Fair Lakes
Fair Oaks
Fairfax
Fairfax Station
Floris
Fort Belvoir
Fort Hunt
Franconia
Franklin Farm
George Mason
Great Falls
Great Falls Crossing
Greenbriar
Groveton
Hayfield
Herndon
Huntington
Climate data from the nearest NOAA station, Washington Dc Dulles Ap, Va (5.9 mi from Bull Run). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.