Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

Heavy snow is expected in the Sierra Nevada mountain ranges into Saturday causing hazardous travel conditions. Winter Storm Warnings have been issued. Thunderstorms and moderate to heavy rainfall are expected across portions of eastern Texas into Louisiana on Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

42°F

6°C

Humidity 55%
Wind Speed NW 8 mph
Barometer 29.84 in (1010.6 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 14 Nov 4:52 am EST
Extended Forecast for

Herndon VA

  • Today

    Today: Increasing clouds, with a high near 51. Northwest wind 9 to 17 mph, with gusts as high as 30 mph.

    High: 51 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 37. West wind around 11 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 52. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 52 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34. Northwest wind 5 to 7 mph.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 55. Northwest wind 5 to 9 mph.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 31.

    Low: 31 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 31.

    Low: 31 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 51. Northwest wind 9 to 17 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 37. West wind around 11 mph, with gusts as high as 20 mph.
Sunday
Increasing clouds, with a high near 52. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 34. Northwest wind 5 to 7 mph.
Monday
Sunny, with a high near 55. Northwest wind 5 to 9 mph.
Monday Night
Clear, with a low around 31.
Tuesday
Sunny, with a high near 58.
Tuesday Night
Clear, with a low around 31.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Clear, with a low around 32.
Thursday
Sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 35.
Friday
Mostly sunny, with a high near 67.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Herndon VA
 38.97°N 77.41°W (Elev. 348 ft)
3:53 am EST Nov 14, 2026
4am EST Nov 14, 2026-6pm EST Nov 20, 2026
 
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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