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.

Mostly Cloudy

39°F

4°C

Humidity 89%
Wind Speed N 10 mph
Barometer 29.73 in (1006.7 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 2 Dec 1:52 pm EST
Extended Forecast for

Great Falls VA

  • This Afternoon

    This Afternoon: A chance of rain, mainly before 3pm. Patchy fog between 2pm and 4pm. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 39. Light northwest wind increasing to 5 to 9 mph. Winds could gust as high as 21 mph. Chance of precipitation is 50%.

    High: 39 °F

    Chance Rain
    and Patchy
    Fog

  • Tonight

    Tonight: Mostly clear, with a low around 27. Northwest wind around 11 mph, with gusts as high as 23 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 41. Northwest wind 5 to 9 mph becoming light west in the afternoon. Winds could gust as high as 18 mph.

    High: 41 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 41. Light northwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 41 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow after 1pm. Partly sunny, with a high near 34. Chance of precipitation is 30%.

    High: 34 °F

    Partly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: A chance of snow and freezing rain before 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.

    Low: 24 °F

    Chance Wintry
    Mix

  • Saturday

    Saturday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of rain, mainly before 3pm. Patchy fog between 2pm and 4pm. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 39. Light northwest wind increasing to 5 to 9 mph. Winds could gust as high as 21 mph. Chance of precipitation is 50%.
Tonight
Mostly clear, with a low around 27. Northwest wind around 11 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 41. Northwest wind 5 to 9 mph becoming light west in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 25. Calm wind.
Thursday
Partly sunny, with a high near 41. Light northwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 19.
Friday
A chance of snow after 1pm. Partly sunny, with a high near 34. Chance of precipitation is 30%.
Friday Night
A chance of snow and freezing rain before 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Partly sunny, with a high near 34.
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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:
1:26 pm EST Dec 2, 2025
Forecast Valid:
1pm EST Dec 2, 2025-6pm EST Dec 8, 2025
 
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Additional Resources

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Chance of Precipitation