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Bull Run, VA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Bull Run, a community in Fairfax County, Virginia.

This Afternoon
79°F
Mostly Cloudy
Mostly cloudy, with a high near 79. Southeast wind around 7 mph.

7-day forecast for Bull Run

WhenTempForecastWindPrecip
This Afternoon 79°F Mostly Cloudy 7 mph SE 4%
Tonight 67°F Mostly Cloudy 8 mph SE 10%
Sunday 86°F Mostly Cloudy then Scattered Showers And Thunderstorms 8 to 13 mph S 50%
Sunday Night 63°F Scattered Showers And Thunderstorms 2 to 8 mph W 50%
Monday 74°F Chance Rain Showers 10 mph NE 38%
Monday Night 60°F Chance Rain Showers 6 to 9 mph NE 49%
Tuesday 68°F Showers And Thunderstorms Likely 7 to 12 mph NE 62%
Tuesday Night 56°F Showers And Thunderstorms Likely 12 mph NE 62%
Wednesday 64°F Chance Rain Showers 12 mph NE 52%
Wednesday Night 55°F Chance Rain Showers 8 to 12 mph NE 37%
Thursday 65°F Chance Rain Showers 13 mph NE 31%
Thursday Night 52°F Chance Rain Showers 7 to 12 mph N 26%
Friday 68°F Slight Chance Rain Showers 14 mph N 24%
Friday Night 52°F Slight Chance Rain Showers 8 to 12 mph N 22%

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

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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.