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

48°F

9°C

Humidity 41%
Wind Speed S 7 mph
Barometer 29.64 in (1003.7 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 14 Jan 10:52 am EST
Extended Forecast for

Great Falls VA

  • Today

    Today: Cloudy, with a high near 52. South wind 6 to 8 mph.

    High: 52 °F

    Cloudy

  • Tonight

    Tonight: Rain likely before 3am, then a slight chance of snow between 3am and 4am. Cloudy, with a low around 25. Blustery, with a west wind 6 to 11 mph becoming northwest 15 to 20 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 25 °F

    Chance Rain
    then
    Rain/Snow
    Likely and
    Blustery

  • Thursday

    Thursday: Mostly sunny, with a high near 30. West wind around 17 mph, with gusts as high as 30 mph.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 19. West wind 9 to 14 mph, with gusts as high as 28 mph.

    Low: 19 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 35. South wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 35 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain and snow before 1pm. Partly sunny, with a high near 44. Chance of precipitation is 30%.

    High: 44 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

Detailed Forecast

Today
Cloudy, with a high near 52. South wind 6 to 8 mph.
Tonight
Rain likely before 3am, then a slight chance of snow between 3am and 4am. Cloudy, with a low around 25. Blustery, with a west wind 6 to 11 mph becoming northwest 15 to 20 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
Mostly sunny, with a high near 30. West wind around 17 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, with a low around 19. West wind 9 to 14 mph, with gusts as high as 28 mph.
Friday
Mostly sunny, with a high near 35. South wind 7 to 11 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 29.
Saturday
A chance of rain and snow before 1pm. Partly sunny, with a high near 44. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 32.
Sunday Night
Partly cloudy, with a low around 19.
M.L.King Day
Mostly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 29.
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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:
9:53 am EST Jan 14, 2026
Forecast Valid:
11am EST Jan 14, 2026-6pm EST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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