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.

Partly Cloudy

32°F

0°C

Humidity 40%
Wind Speed S 13 mph
Barometer 30.09 in (1019.4 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 9 Dec 2:52 pm EST
Extended Forecast for

2 Miles S Herndon VA

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. South wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain, mainly before 2pm. Cloudy, with a high near 45. South wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31. Southwest wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 31 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 38. West wind 11 to 14 mph, with gusts as high as 25 mph.

    High: 38 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25. West wind 6 to 8 mph.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow, mainly after 1pm. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.

    High: 37 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow before 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Saturday Night

    Saturday 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, with a low around 27. South wind 9 to 11 mph, with gusts as high as 22 mph.
Wednesday
A chance of rain, mainly before 2pm. Cloudy, with a high near 45. South wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 31. 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 38. West wind 11 to 14 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 25. West wind 6 to 8 mph.
Friday
A chance of snow, mainly after 1pm. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Friday Night
A chance of snow before 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 43.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 37.
Sunday Night
Mostly clear, with a low around 17.
Monday
Mostly sunny, with a high near 32.
Monday Night
Mostly cloudy, with a low around 21.
Tuesday
Mostly sunny, with a high near 36.
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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:
3:01 pm EST Dec 9, 2025
Forecast Valid:
3pm EST Dec 9, 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