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.

Partly Cloudy and Windy

51°F

11°C

Humidity 25%
Wind Speed W 28 G 51 mph
Barometer 29.48 in (998.2 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 29 Dec 1:52 pm EST
Extended Forecast for

Great Falls VA

Wind Advisory December 29, 02:53pm until December 30, 01:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 29, 02:53pm until December 30, 01:00am

    NOW until 1:00am Tue

    Wind Advisory

  • This Afternoon

    High: 54 °F

    Mostly Sunny
    and Windy

  • Tonight

    Tonight: Mostly clear, with a low around 26. Breezy, with a west wind 23 to 25 mph, with gusts as high as 48 mph.

    Low: 26 °F

    Mostly Clear
    and Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. Breezy, with a west wind 18 to 24 mph, with gusts as high as 38 mph.

    High: 35 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 25. West wind 6 to 10 mph, with gusts as high as 23 mph.

    Low: 25 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 40. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 40 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of snow showers after 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 20%.

    Low: 25 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 20 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 54. Windy, with a west wind around 28 mph, with gusts as high as 48 mph.
Tonight
Mostly clear, with a low around 26. Breezy, with a west wind 23 to 25 mph, with gusts as high as 48 mph.
Tuesday
Mostly sunny, with a high near 35. Breezy, with a west wind 18 to 24 mph, with gusts as high as 38 mph.
Tuesday Night
Increasing clouds, with a low around 25. West wind 6 to 10 mph, with gusts as high as 23 mph.
Wednesday
Partly sunny, with a high near 40. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
A slight chance of snow showers after 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 20%.
New Year's Day
Mostly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Partly sunny, with a high near 41.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Great Falls VA
 39.01°N 77.29°W (Elev. 348 ft)
Last Update:
2:29 pm EST Dec 29, 2025
Forecast Valid:
2pm EST Dec 29, 2025-6pm EST Jan 4, 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