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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Washington Manassas Airport (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

Fair

72°F

22°C

Humidity 87%
Wind Speed N 7 mph
Barometer 29.98 in (1015.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 28 Aug 6:56 am EDT
Extended Forecast for

Clifton VA

  • Today

    Today: Scattered showers and thunderstorms, mainly between 2pm and 5pm. Partly sunny, with a high near 85. North wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 85 °F

    Isolated
    T-storms then
    Scattered
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 64. North wind around 7 mph.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85. North wind 5 to 8 mph.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. East wind around 6 mph.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 88. South wind 6 to 8 mph.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

Today
Scattered showers and thunderstorms, mainly between 2pm and 5pm. Partly sunny, with a high near 85. North wind 5 to 7 mph. Chance of precipitation is 30%.
Tonight
Partly cloudy, with a low around 64. North wind around 7 mph.
Saturday
Mostly sunny, with a high near 85. North wind 5 to 8 mph.
Saturday Night
Partly cloudy, with a low around 66. East wind around 6 mph.
Sunday
Mostly sunny, with a high near 88. South wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around 70.
Monday
Mostly sunny, with a high near 91.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
Mostly sunny, with a high near 92.
Tuesday Night
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 74. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clifton VA
 38.77°N 77.39°W (Elev. 299 ft)
Last Update:
4:53 am EDT Aug 28, 2026
Forecast Valid:
7am EDT Aug 28, 2026-6pm EDT Sep 3, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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