National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fair

77°F

25°C

Humidity 39%
Wind Speed SW 7 mph
Barometer 29.80 in (1008.9 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 16 Jun 6:52 pm EDT
Extended Forecast for

Washington-Dulles International Airport VA

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. Southeast wind 3 to 6 mph.

    Low: 62 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 87. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 67. Light south wind increasing to 5 to 9 mph after midnight. Winds could gust as high as 20 mph.

    Low: 67 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 94. West wind around 16 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    High: 94 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then a chance of showers after 2am. Mostly cloudy, with a low around 67. West wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 67 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Juneteenth

    Juneteenth: A chance of showers and thunderstorms before 2pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. Southeast wind 3 to 6 mph.
Wednesday
Sunny, with a high near 87. Calm wind becoming west 5 to 8 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 67. Light south wind increasing to 5 to 9 mph after midnight. Winds could gust as high as 20 mph.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 94. West wind around 16 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Thursday Night
A slight chance of showers and thunderstorms, then a chance of showers after 2am. Mostly cloudy, with a low around 67. West wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Juneteenth
A chance of showers and thunderstorms before 2pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 86.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Washington-Dulles International Airport VA
 38.95°N 77.44°W (Elev. 285 ft)
Last Update:
5:14 pm EDT Jun 16, 2026
Forecast Valid:
7pm EDT Jun 16, 2026-6pm EDT Jun 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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