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

69°F

21°C

Humidity 68%
Wind Speed N 7 mph
Barometer 30.15 in (1021.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 19 Sep 8:56 am EDT
Extended Forecast for

3 Miles S Broad Run VA

  • Today

    Today: Partly sunny, with a high near 78. North wind around 6 mph becoming calm  in the morning.

    High: 78 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. Southeast wind around 6 mph.

    Low: 65 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly before 4pm.  Mostly cloudy, with a high near 83. South wind 8 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 40%.

    High: 83 °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 62. Calm wind becoming north 5 to 8 mph after midnight.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °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 68. North wind 7 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 40%.

    High: 68 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers.  Cloudy, with a low around 57. Chance of precipitation is 50%.

    Low: 57 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely.  Mostly cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after 2am.  Mostly cloudy, with a low around 53. Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, mainly before 8am.  Mostly cloudy, with a high near 59. Chance of precipitation is 60%.

    High: 59 °F

    Showers
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 78. North wind around 6 mph becoming calm in the morning.
Tonight
Mostly cloudy, with a low around 65. Southeast wind around 6 mph.
Sunday
A chance of showers and thunderstorms, mainly before 4pm. Mostly cloudy, with a high near 83. South wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
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 62. Calm wind becoming north 5 to 8 mph after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A slight chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 68. North wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Monday Night
A chance of showers. Cloudy, with a low around 57. Chance of precipitation is 50%.
Tuesday
Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Tuesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Wednesday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 61. Chance of precipitation is 40%.
Thursday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Chance of precipitation is 20%.
Friday
A slight chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Broad Run VA
 38.76°N 77.73°W (Elev. 518 ft)
7:52 am EDT Sep 19, 2026
9am EDT Sep 19, 2026-6pm EDT Sep 25, 2026
 
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Additional Resources

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