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.

Overcast

31°F

-1°C

Humidity 79%
Wind Speed S 13 mph
Barometer 29.92 in (1013.5 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 9 Dec 11:52 pm EST
Extended Forecast for

Great Falls VA

  • Overnight

    Overnight: Mostly cloudy, with a low around 29. South wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain, mainly between 10am and 4pm. Cloudy, with a high near 44. South wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 44 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. Southwest wind 10 to 13 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 36. West wind 13 to 16 mph, with gusts as high as 29 mph.

    High: 36 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24. West wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 36. Chance of precipitation is 40%.

    High: 36 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow before 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

    Low: 26 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.

    Low: 25 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 29. South wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
A chance of rain, mainly between 10am and 4pm. Cloudy, with a high near 44. South wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 29. Southwest wind 10 to 13 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 36. West wind 13 to 16 mph, with gusts as high as 29 mph.
Thursday Night
Partly cloudy, with a low around 24. West wind 6 to 9 mph, with gusts as high as 18 mph.
Friday
A chance of snow. Mostly cloudy, with a high near 36. Chance of precipitation is 40%.
Friday Night
A chance of snow before 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 41.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Mostly clear, with a low around 16.
Monday
Sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 37.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Great Falls VA
 39.01°N 77.29°W (Elev. 348 ft)
Last Update:
11:43 pm EST Dec 9, 2025
Forecast Valid:
12am EST Dec 10, 2025-6pm EST Dec 16, 2025
 
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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