National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Washington Manassas Airport (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

Mostly Cloudy

84°F

29°C

Humidity 61%
Wind Speed N 9 mph
Barometer 30.12 in (1020.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 18 Sep 11:56 am EDT
Extended Forecast for

Bull Run VA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 86. North wind around 9 mph.

    High: 86 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. North wind around 5 mph.

    Low: 62 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 80. North wind around 6 mph.

    High: 80 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 66. Southeast wind 3 to 6 mph.

    Low: 66 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 84. South wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.

    High: 84 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Monday

    Monday: A slight chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 50%.

    High: 78 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after 8pm. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Partly sunny, with a high near 86. North wind around 9 mph.
Tonight
Mostly cloudy, with a low around 62. North wind around 5 mph.
Saturday
Partly sunny, with a high near 80. North wind around 6 mph.
Saturday Night
Mostly cloudy, with a low around 66. Southeast wind 3 to 6 mph.
Sunday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 84. South wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Monday
A slight chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 50%.
Monday Night
Showers likely, mainly after 8pm. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Tuesday
Showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 64. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bull Run VA
 38.78°N 77.5°W (Elev. 220 ft)
Last Update:
10:53 am EDT Sep 18, 2026
Forecast Valid:
12pm EDT Sep 18, 2026-6pm EDT Sep 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation