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
86°F
Partly Sunny
Partly sunny, with a high near 86. Northeast wind around 6 mph.
7-day forecast for Bull Run
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Partly Sunny | 6 mph NE | 7% |
| Tonight | 70°F | Chance Showers And Thunderstorms | 0 to 7 mph E | 73% |
| Wednesday | 86°F | Showers And Thunderstorms Likely | 1 to 7 mph SE | 67% |
| Wednesday Night | 72°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 7 mph S | 56% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 12 mph S | 16% |
| Thursday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph SW | 16% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SW | 44% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 44% |
| Saturday | 89°F | Partly Sunny then Showers And Thunderstorms Likely | 1 to 6 mph SW | 55% |
| Saturday Night | 70°F | Showers And Thunderstorms Likely | 0 to 6 mph SW | 55% |
| Sunday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 20% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 20% |
| Monday | 92°F | Mostly Sunny | 1 to 6 mph W | 10% |
| Monday Night | 72°F | Partly Cloudy | 1 to 5 mph W | 14% |
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
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Fair Lakes
Fair Oaks
Fairfax
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Floris
Fort Belvoir
Fort Hunt
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Great Falls
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Greenbriar
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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 Aug 4, 2026.