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

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

47°F

8°C

Humidity 44%
Wind Speed Vrbl 6 mph
Barometer 30.25 in (1024.5 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 19 Mar 11:52 am EDT
Extended Forecast for

Reston VA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 55. South wind around 7 mph.

    High: 55 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. Light and variable wind.

    Low: 39 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers after 2pm. Partly sunny, with a high near 66. Light south wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 66 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 50. South wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 69. Northwest wind 6 to 8 mph.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 55. South wind around 7 mph.
Tonight
Mostly cloudy, with a low around 39. Light and variable wind.
Friday
A slight chance of showers after 2pm. Partly sunny, with a high near 66. Light south wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Friday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 50. South wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 69. Northwest wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 58.
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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:
10:53 am EDT Mar 19, 2026
Forecast Valid:
12pm EDT Mar 19, 2026-6pm EDT Mar 25, 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