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

38°F

3°C

Humidity 44%
Wind Speed NW 15 G 24 mph
Barometer 30.06 in (1018.1 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 27 Nov 4:52 pm EST
Extended Forecast for

Reston VA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 28. West wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 40. West wind 14 to 18 mph, with gusts as high as 36 mph.

    High: 40 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. West wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 42. West wind around 6 mph becoming calm in the afternoon.

    High: 42 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow after 1am. Mostly cloudy, with a low around 31. Calm wind becoming south 5 to 7 mph in the evening. Chance of precipitation is 20%.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A chance of rain and snow before 1pm, then rain likely. Cloudy, with a high near 44. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of snow after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 28. West wind 9 to 14 mph, with gusts as high as 23 mph.
Friday
Sunny, with a high near 40. West wind 14 to 18 mph, with gusts as high as 36 mph.
Friday Night
Mostly clear, with a low around 25. West wind 7 to 10 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 42. West wind around 6 mph becoming calm in the afternoon.
Saturday Night
A slight chance of snow after 1am. Mostly cloudy, with a low around 31. Calm wind becoming south 5 to 7 mph in the evening. Chance of precipitation is 20%.
Sunday
A chance of rain and snow before 1pm, then rain likely. Cloudy, with a high near 44. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
Mostly sunny, with a high near 42.
Monday Night
A chance of snow after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Tuesday
Rain likely. Cloudy, with a high near 38. Chance of precipitation is 60%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 42.
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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:
3:53 pm EST Nov 27, 2025
Forecast Valid:
5pm EST Nov 27, 2025-6pm EST Dec 4, 2025
 
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Additional Resources

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Chance of Precipitation