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

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Light Rain

57°F

14°C

Humidity 81%
Wind Speed S 9 mph
Barometer 29.82 in (1009.8 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 20 Mar 7:52 pm EDT
Extended Forecast for

Reston VA

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then isolated showers between 2am and 3am. Patchy fog between 1am and 2am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 49. Light southwest wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Showers
    Likely and
    Patchy Fog

  • Saturday

    Saturday: Mostly sunny, with a high near 65. North wind 6 to 9 mph.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46. East wind around 6 mph becoming south after midnight.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 78. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 78 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Scattered showers before 11pm, then scattered showers and thunderstorms between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 52. Southwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

    Low: 52 °F

    Scattered
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely, mainly before 8am. Partly sunny, with a high near 62. Chance of precipitation is 60%.

    High: 62 °F

    Showers
    Likely then
    Isolated
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely before 2am, then isolated showers between 2am and 3am. Patchy fog between 1am and 2am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 49. Light southwest wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 65. North wind 6 to 9 mph.
Saturday Night
Partly cloudy, with a low around 46. East wind around 6 mph becoming south after midnight.
Sunday
Partly sunny, with a high near 78. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.
Sunday Night
Scattered showers before 11pm, then scattered showers and thunderstorms between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 52. Southwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Monday
Showers likely, mainly before 8am. Partly sunny, with a high near 62. Chance of precipitation is 60%.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Mostly cloudy, with a high near 55.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Friday
A chance of rain. Partly sunny, with a high near 59. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Reston VA
 38.97°N 77.36°W (Elev. 430 ft)
Last Update:
7:53 pm EDT Mar 20, 2026
Forecast Valid:
8pm EDT Mar 20, 2026-6pm EDT Mar 27, 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