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 and Breezy

36°F

2°C

Humidity 52%
Wind Speed NW 21 G 29 mph
Barometer 29.71 in (1006.3 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 11 Dec 4:52 am EST
Extended Forecast for

Great Falls VA

  • Today

    Today: Mostly sunny, with a high near 37. Northwest wind 13 to 16 mph, with gusts as high as 31 mph.

    High: 37 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 26. West wind 3 to 8 mph.

    Low: 26 °F

    Increasing
    Clouds

  • Friday

    Friday: A slight chance of snow after 1pm. Mostly cloudy, with a high near 37. Calm wind becoming west around 6 mph. Chance of precipitation is 20%.

    High: 37 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: A chance of snow before 1am. Mostly cloudy, with a low around 27. Calm wind. Chance of precipitation is 30%.

    Low: 27 °F

    Chance Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 43. Calm wind becoming west 5 to 7 mph in the morning.

    High: 43 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Snow likely, possibly mixed with rain, becoming all snow after 4am. Cloudy, with a low around 24. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 24 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Sunday

    Sunday: A chance of snow before 1pm. Partly sunny, with a high near 30. Chance of precipitation is 30%.

    High: 30 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 37. Northwest wind 13 to 16 mph, with gusts as high as 31 mph.
Tonight
Increasing clouds, with a low around 26. West wind 3 to 8 mph.
Friday
A slight chance of snow after 1pm. Mostly cloudy, with a high near 37. Calm wind becoming west around 6 mph. Chance of precipitation is 20%.
Friday Night
A chance of snow before 1am. Mostly cloudy, with a low around 27. Calm wind. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 43. Calm wind becoming west 5 to 7 mph in the morning.
Saturday Night
Snow likely, possibly mixed with rain, becoming all snow after 4am. Cloudy, with a low around 24. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Sunday
A chance of snow before 1pm. Partly sunny, with a high near 30. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 18.
Monday
Mostly sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Partly sunny, with a high near 43.
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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:
3:53 am EST Dec 11, 2025
Forecast Valid:
5am EST Dec 11, 2025-6pm EST Dec 17, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation