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

37°F

3°C

Humidity 96%
Wind Speed NW 6 mph
Barometer 29.75 in (1007.5 mb)
Dewpoint 36°F (2°C)
Visibility 7.00 mi
Wind Chill32°F (0°C)
Last update 2 Dec 12:52 pm EST
Extended Forecast for

2 Miles S Herndon VA

  • This Afternoon

    This Afternoon: A chance of rain, mainly before 3pm. Patchy fog before 4pm. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 40. Northwest wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 40 °F

    Chance Rain
    and Patchy
    Fog

  • Tonight

    Tonight: Mostly clear, with a low around 27. Northwest wind 11 to 13 mph, with gusts as high as 25 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 41. Northwest wind 6 to 11 mph becoming light and variable in the afternoon. Winds could gust as high as 22 mph.

    High: 41 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 42. Light northwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

    High: 42 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow after 1pm. Partly sunny, with a high near 34. Chance of precipitation is 30%.

    High: 34 °F

    Partly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: A chance of snow and freezing rain before 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.

    Low: 25 °F

    Chance Wintry
    Mix

  • Saturday

    Saturday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of rain, mainly before 3pm. Patchy fog before 4pm. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 40. Northwest wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Tonight
Mostly clear, with a low around 27. Northwest wind 11 to 13 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 41. Northwest wind 6 to 11 mph becoming light and variable in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 26. Calm wind.
Thursday
Partly sunny, with a high near 42. Light northwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 20.
Friday
A chance of snow after 1pm. Partly sunny, with a high near 34. Chance of precipitation is 30%.
Friday Night
A chance of snow and freezing rain before 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Partly sunny, with a high near 34.
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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:
12:52 pm EST Dec 2, 2025
Forecast Valid:
1pm EST Dec 2, 2025-6pm EST Dec 8, 2025
 
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Additional Resources

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Chance of Precipitation