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.

Mostly Cloudy

38°F

3°C

Humidity 36%
Wind Speed W 20 G 33 mph
Barometer 30.20 in (1022.7 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 28 Nov 2:52 pm EST
Extended Forecast for

Great Falls VA

  • Tonight

    Tonight: Mostly clear, with a low around 25. West wind 7 to 13 mph, with gusts as high as 24 mph.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 41. West wind around 6 mph becoming calm in the afternoon.

    High: 41 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 29. Calm wind becoming south around 6 mph after midnight.

    Low: 29 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of rain and snow before 10am, then rain likely. Cloudy, with a high near 45. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 45 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 30 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of snow after 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Snow

  • Tuesday

    Tuesday: Rain and snow likely, becoming all rain after 1pm. Cloudy, with a high near 38. Chance of precipitation is 70%.

    High: 38 °F

    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: A chance of rain before 1am. Partly cloudy, with a low around 27. Chance of precipitation is 30%.

    Low: 27 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 25. West wind 7 to 13 mph, with gusts as high as 24 mph.
Saturday
Sunny, with a high near 41. West wind around 6 mph becoming calm in the afternoon.
Saturday Night
Increasing clouds, with a low around 29. Calm wind becoming south around 6 mph after midnight.
Sunday
A chance of rain and snow before 10am, then rain likely. Cloudy, with a high near 45. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday Night
Mostly cloudy, with a low around 30. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 42.
Monday Night
A chance of snow after 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Tuesday
Rain and snow likely, becoming all rain after 1pm. Cloudy, with a high near 38. Chance of precipitation is 70%.
Tuesday Night
A chance of rain before 1am. Partly cloudy, with a low around 27. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 25.
Thursday
Partly sunny, with a high near 42.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Partly sunny, with a high near 38.
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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:
2:43 pm EST Nov 28, 2025
Forecast Valid:
3pm EST Nov 28, 2025-6pm EST Dec 5, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation