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

32°F

0°C

Humidity 59%
Wind Speed N 7 mph
Barometer 30.24 in (1024.2 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 4 Jan 8:52 pm EST
Extended Forecast for

Great Falls VA

  • Tonight

    Tonight: Mostly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 44. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 44 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34. South wind around 6 mph becoming calm in the evening.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 52. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 52 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. South wind around 6 mph becoming southwest after midnight.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 25. Calm wind.
Monday
Partly sunny, with a high near 44. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 34. South wind around 6 mph becoming calm in the evening.
Tuesday
Mostly cloudy, with a high near 52. Calm wind becoming southeast around 6 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 43. South wind around 6 mph becoming southwest after midnight.
Wednesday
Mostly sunny, with a high near 58.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Mostly sunny, with a high near 55.
Thursday Night
A chance of rain after 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Friday
A chance of rain. Mostly cloudy, with a high near 58. Chance of precipitation is 50%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 48. Chance of precipitation is 50%.
Saturday
A chance of rain. Mostly cloudy, with a high near 58. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly 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:
6:53 pm EST Jan 4, 2026
Forecast Valid:
9pm EST Jan 4, 2026-6pm EST Jan 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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