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.

Fog/Mist

69°F

21°C

Humidity 96%
Wind Speed NE 12 G 20 mph
Barometer 30.10 in (1019.0 mb)
Dewpoint 68°F (20°C)
Visibility 6.00 mi
Last update 27 Jun 5:52 am EDT
Extended Forecast for

3 Miles SE Great Falls VA

  • Today

    Today: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 78. East wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 71. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 50%.

    Low: 71 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 92. Heat index values as high as 100. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 50%.

    High: 92 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Light southwest wind. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Showers and thunderstorms likely after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 60%.

    High: 91 °F

    Partly Sunny
    then T-storms
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    T-storms
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 70%.

    High: 89 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Today
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 78. East wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 71. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 92. Heat index values as high as 100. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Light southwest wind. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Monday
Showers and thunderstorms likely after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 60%.
Monday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 70. Chance of precipitation is 60%.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Great Falls VA
 38.98°N 77.27°W (Elev. 266 ft)
Last Update:
4:29 am EDT Jun 27, 2025
Forecast Valid:
6am EDT Jun 27, 2025-6pm EDT Jul 3, 2025
 
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