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.

Overcast

36°F

2°C

Humidity 76%
Wind Speed S 12 G 23 mph
Barometer 29.64 in (1003.8 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 10 Dec 9:52 am EST
Extended Forecast for

2 Miles S Herndon VA

  • Today

    Today: A chance of rain, mainly between 1pm and 4pm. Cloudy, with a high near 45. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    High: 45 °F

    Chance Rain

  • Tonight

    Tonight: Partly cloudy, with a low around 29. Southwest wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 37. West wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 24. West wind 5 to 9 mph.

    Low: 24 °F

    Increasing
    Clouds

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 37. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.

    High: 37 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.

    Low: 27 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.

    Low: 25 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of rain, mainly between 1pm and 4pm. Cloudy, with a high near 45. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Tonight
Partly cloudy, with a low around 29. Southwest wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Thursday
Mostly sunny, with a high near 37. West wind 13 to 17 mph, with gusts as high as 28 mph.
Thursday Night
Increasing clouds, with a low around 24. West wind 5 to 9 mph.
Friday
A chance of snow. Mostly cloudy, with a high near 37. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.
Friday Night
A chance of snow, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 41.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Mostly clear, with a low around 16.
Monday
Sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Herndon VA
 38.95°N 77.39°W (Elev. 384 ft)
Last Update:
9:53 am EST Dec 10, 2025
Forecast Valid:
10am EST Dec 10, 2025-6pm EST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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