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

Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Current conditions at

Manassas, Manassas Regional Airport/Harry P. Davis Field (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

A Few Clouds

75°F

24°C

Humidity 76%
Wind Speed NW 9 mph
Barometer 29.60 in (1002.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 28 Jul 7:56 pm EDT
Extended Forecast for

Manassas VA

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Some of the storms could be severe. Mostly cloudy, then gradually becoming clear, with a low around 66. Calm wind becoming northwest 5 to 9 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 50%.

    Low: 66 °F

    Severe
    Thunderstorms
    then Mostly
    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85. Northwest wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. Northwest wind around 9 mph, with gusts as high as 18 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Northwest wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. Northwest wind 3 to 6 mph.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 90.

    High: 90 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Some of the storms could be severe. Mostly cloudy, then gradually becoming clear, with a low around 66. Calm wind becoming northwest 5 to 9 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 50%.
Wednesday
Mostly sunny, with a high near 85. Northwest wind 10 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 66. Northwest wind around 9 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 85. Northwest wind 10 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 65. Northwest wind 3 to 6 mph.
Friday
Sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 67.
Saturday
Partly sunny, with a high near 90.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Manassas VA
 38.76°N 77.48°W (Elev. 289 ft)
Last Update:
8:22 pm EDT Jul 28, 2026
Forecast Valid:
8pm EDT Jul 28, 2026-6pm EDT Aug 4, 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