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

33°F

1°C

Humidity 49%
Wind Speed N 8 mph
Barometer 30.20 in (1022.7 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 26 Dec 4:52 am EST
Extended Forecast for

Great Falls VA

  • Today

    Today: A slight chance of freezing rain and sleet between noon and 1pm, then a chance of rain and sleet. Cloudy, with a high near 34. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    High: 34 °F

    Mostly Cloudy
    then Chance
    Wintry Mix

  • Tonight

    Tonight: Rain likely, mainly before 9pm. Cloudy, with a low around 34. South wind 5 to 9 mph becoming calm. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Rain Likely
    then Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 43. North wind 6 to 8 mph.

    High: 43 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 32. Northeast wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of rain. Cloudy, with a high near 47. Light southeast wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 40%.

    High: 47 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A chance of rain. Cloudy, with a low around 43. Chance of precipitation is 50%.

    Low: 43 °F

    Chance Rain

  • Monday

    Monday: Rain likely, mainly before 1pm. Cloudy, with a high near 60. Chance of precipitation is 70%.

    High: 60 °F

    Rain Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of freezing rain and sleet between noon and 1pm, then a chance of rain and sleet. Cloudy, with a high near 34. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Tonight
Rain likely, mainly before 9pm. Cloudy, with a low around 34. South wind 5 to 9 mph becoming calm. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, with a high near 43. North wind 6 to 8 mph.
Saturday Night
Increasing clouds, with a low around 32. Northeast wind around 5 mph becoming calm in the evening.
Sunday
A chance of rain. Cloudy, with a high near 47. Light southeast wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 40%.
Sunday Night
A chance of rain. Cloudy, with a low around 43. Chance of precipitation is 50%.
Monday
Rain likely, mainly before 1pm. Cloudy, with a high near 60. Chance of precipitation is 70%.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 42.
Wednesday Night
Partly cloudy, with a low around 24.
New Year's Day
Partly sunny, with a high near 36.
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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 26, 2025
Forecast Valid:
5am EST Dec 26, 2025-6pm EST Jan 1, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation