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

34°F

1°C

Humidity 56%
Wind Speed NW 15 G 26 mph
Barometer 29.95 in (1014.4 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 23 Feb 7:52 pm EST
Extended Forecast for

2 Miles S Herndon VA

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 30 mph.

    Low: 23 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 38. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 38 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow after 1am, mixing with rain after 4am. Increasing clouds, with a low around 31. South wind 5 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 54. South wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 54 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain after 1am. Partly cloudy, with a low around 35. West wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 35 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 46. Chance of precipitation is 70%.

    High: 46 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.

    Low: 33 °F

    Rain Likely

  • Friday

    Friday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 23. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 38. Northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
A slight chance of snow after 1am, mixing with rain after 4am. Increasing clouds, with a low around 31. South wind 5 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 54. South wind 10 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
A slight chance of rain after 1am. Partly cloudy, with a low around 35. West wind 3 to 6 mph. Chance of precipitation is 20%.
Thursday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 46. Chance of precipitation is 70%.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 46.
Friday Night
Mostly clear, with a low around 31.
Saturday
Sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Partly sunny, with a high near 51.
Sunday Night
Mostly cloudy, with a low around 29.
Monday
A chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 40%.
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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:
6:53 pm EST Feb 23, 2026
Forecast Valid:
8pm EST Feb 23, 2026-6pm EST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation