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

32°F

0°C

Humidity 69%
Wind Speed S 7 mph
Barometer 29.64 in (1003.8 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 1 Jan 4:52 am EST
Extended Forecast for

Herndon VA

  • Overnight

    Overnight: A chance of snow showers. Mostly cloudy, with a low around 27. West wind around 10 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.

    Low: 27 °F

    Chance Snow
    Showers

  • New Year's Day

    New Year's Day: Mostly cloudy, then gradually becoming sunny, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 34 mph.

    High: 31 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 23. Northwest wind around 5 mph becoming calm in the evening.

    Low: 23 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 41. Calm wind becoming west around 6 mph in the afternoon.

    High: 41 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 25. Light northwest wind.

    Low: 25 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of snow after 1pm. Mostly cloudy, with a high near 37. Chance of precipitation is 20%.

    High: 37 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of snow showers. Mostly cloudy, with a low around 27. West wind around 10 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.
New Year's Day
Mostly cloudy, then gradually becoming sunny, with a high near 31. Northwest wind 10 to 15 mph, with gusts as high as 34 mph.
Thursday Night
Mostly cloudy, with a low around 23. Northwest wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 41. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 25. Light northwest wind.
Saturday
A slight chance of snow after 1pm. Mostly cloudy, with a high near 37. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Sunny, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Mostly cloudy, with a high near 38.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Partly sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Herndon VA
 38.99°N 77.38°W (Elev. 318 ft)
Last Update:
3:53 am EST Jan 1, 2026
Forecast Valid:
5am EST Jan 1, 2026-6pm EST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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