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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. this week. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England today. Read More >

Current conditions at

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

Lat: 38.72°NLon: 77.52°WElev: 194ft.

Mostly Cloudy

82°F

28°C

Humidity 56%
Wind Speed NW 15 G 21 mph
Barometer 29.72 in (1006.6 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 29 Jul 11:56 am EDT
Extended Forecast for

Manassas VA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 85. Northwest wind around 14 mph, with gusts as high as 24 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 66. Northwest wind around 9 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86. Northwest wind 9 to 13 mph, with gusts as high as 22 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. Northwest wind 3 to 6 mph.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88. North wind 3 to 5 mph.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 20%.

    High: 89 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 88. Chance of precipitation is 40%.

    High: 88 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 85. Northwest wind around 14 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 66. Northwest wind around 9 mph.
Thursday
Sunny, with a high near 86. Northwest wind 9 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 66. Northwest wind 3 to 6 mph.
Friday
Sunny, with a high near 88. North wind 3 to 5 mph.
Friday Night
Partly cloudy, with a low around 68.
Saturday
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 20%.
Sunday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 88. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 87. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Manassas VA
 38.76°N 77.48°W (Elev. 289 ft)
Last Update:
10:53 am EDT Jul 29, 2026
Forecast Valid:
12pm EDT Jul 29, 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