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.

Partly Cloudy

22°C

72°F

Humidity 79%
Wind Speed SE 7 km/h
Barometer 1025.3 mb (30.29 in)
Dewpoint 18°C (65°F)
Visibility 16 km
Last update 16 Sep 11:52 pm EDT
Extended Forecast for

Dulles VA

  • Overnight

    Overnight: Partly cloudy, with a low around 18. South wind 5 to 8 km/h.

    Low: 18 °C

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 32. South wind 5 to 10 km/h. Chance of precipitation is 40%.

    High: 32 °C

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Mostly cloudy, with a low around 21. Southwest wind 5 to 8 km/h becoming calm. Chance of precipitation is 50%.

    Low: 21 °C

    Chance
    Showers then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 29. North wind 11 to 14 km/h.

    High: 29 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 17. Northeast wind around 11 km/h.

    Low: 17 °C

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 27.

    High: 27 °C

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 18.

    Low: 18 °C

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 29. Chance of precipitation is 60%.

    High: 29 °C

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 18. Chance of precipitation is 60%.

    Low: 18 °C

    Showers
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 18. South wind 5 to 8 km/h.
Thursday
A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 32. South wind 5 to 10 km/h. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Mostly cloudy, with a low around 21. Southwest wind 5 to 8 km/h becoming calm. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 29. North wind 11 to 14 km/h.
Friday Night
Partly cloudy, with a low around 17. Northeast wind around 11 km/h.
Saturday
Mostly sunny, with a high near 27.
Saturday Night
Mostly cloudy, with a low around 18.
Sunday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 29. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 18. Chance of precipitation is 60%.
Monday
A chance of showers, mainly after 8am. Mostly cloudy, with a high near 24. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 18. Chance of precipitation is 50%.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 23. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 17. Chance of precipitation is 40%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 22. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Dulles VA
 38.92°N 77.36°W (Elev. 400 m)
Last Update:
10:52 pm EDT Sep 16, 2026
Forecast Valid:
12am EDT Sep 17, 2026-6pm EDT Sep 23, 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