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.

Mostly Cloudy

34°F

1°C

Humidity 52%
Wind Speed NW 14 G 25 mph
Barometer 30.18 in (1022.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 11 Jan 8:52 pm EST
Extended Forecast for

2 Miles S Herndon VA

  • Tonight

    Tonight: Mostly clear, with a low around 29. Northwest wind 10 to 17 mph, with gusts as high as 34 mph.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 45. West wind 6 to 8 mph becoming southwest in the afternoon.

    High: 45 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. Southwest wind around 6 mph becoming calm in the evening.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain, mainly after 1pm. Cloudy, with a high near 51. Chance of precipitation is 30%.

    High: 51 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.

    High: 39 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of snow before 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.

    Low: 21 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 29. Northwest wind 10 to 17 mph, with gusts as high as 34 mph.
Monday
Mostly sunny, with a high near 45. West wind 6 to 8 mph becoming southwest in the afternoon.
Monday Night
Partly cloudy, with a low around 30. Southwest wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 49. Calm wind becoming south 5 to 8 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 39. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Wednesday
A chance of rain, mainly after 1pm. Cloudy, with a high near 51. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.
Thursday
A chance of rain before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.
Thursday Night
A chance of snow before 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 35.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Partly sunny, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
A chance of snow. Partly sunny, with a high near 36. Chance of precipitation is 30%.
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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 Jan 11, 2026
Forecast Valid:
9pm EST Jan 11, 2026-6pm EST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation