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

Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

75°F

24°C

Humidity 32%
Wind Speed NW 8 mph
Barometer 30.10 in (1019.0 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 30 Aug 2:52 pm EDT
Extended Forecast for

Reston VA

  • Tonight

    Tonight: Clear, with a low around 52. North wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 77. Northeast wind 3 to 6 mph.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 79. North wind around 6 mph becoming east in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. East wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 52. North wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 77. Northeast wind 3 to 6 mph.
Sunday Night
Partly cloudy, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.
Labor Day
Mostly sunny, with a high near 79. North wind around 6 mph becoming east in the afternoon.
Monday Night
Partly cloudy, with a low around 56. East wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Mostly cloudy, with a low around 61.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 40%.
Friday Night
A chance of showers. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Reston VA
 38.97°N 77.36°W (Elev. 430 ft)
Last Update:
3:10 pm EDT Aug 30, 2025
Forecast Valid:
3pm EDT Aug 30, 2025-6pm EDT Sep 6, 2025
 
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