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.

A Few Clouds

31°F

-1°C

Humidity 59%
Wind Speed NW 7 mph
Barometer 30.41 in (1030.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 24 Mar 6:52 am EDT
Extended Forecast for

Great Falls VA

  • Today

    Today: Sunny, with a high near 52. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 52 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 38. Calm wind becoming south around 5 mph after midnight.

    Low: 38 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 59. South wind 6 to 9 mph, with gusts as high as 18 mph.

    High: 59 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 48. South wind around 8 mph.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 73. South wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of rain, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.

    Low: 55 °F

    Chance Rain
    then Rain
    Likely

  • Friday

    Friday: Rain likely, mainly before 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.

    High: 63 °F

    Rain Likely

  • Friday Night

    Friday Night: A chance of rain before 8pm. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance Rain
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 52. North wind 5 to 7 mph becoming calm in the afternoon.
Tonight
Increasing clouds, with a low around 38. Calm wind becoming south around 5 mph after midnight.
Wednesday
Partly sunny, with a high near 59. South wind 6 to 9 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly cloudy, with a low around 48. South wind around 8 mph.
Thursday
Partly sunny, with a high near 73. South wind 7 to 11 mph, with gusts as high as 21 mph.
Thursday Night
A chance of rain, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Friday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Friday Night
A chance of rain before 8pm. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 49.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 66.
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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:
4:53 am EDT Mar 24, 2026
Forecast Valid:
7am EDT Mar 24, 2026-6pm EDT Mar 30, 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