Dangerous Heat Expands; Heavy Rainfall Threats; Fire Weather Concerns for the West

The heat will increase and expand across the Central Plains, Mississippi Valley, Southeast and into the Eastern U.S. through the week as high pressure builds across the eastern two-thirds of the country. On the northern periphery of this heat, the threat for severe thunderstorms and heavy rainfall across the northern Plains and upper Midwest through Tuesday. Critical Fire Weather for the west. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

74°F

23°C

Humidity 91%
Wind Speed NW 6 mph
Barometer 29.93 in (1013.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 21 Jul 7:52 am EDT
Extended Forecast for

Vienna VASimilar City Names

  • Today

    Today: Mostly sunny, with a high near 85. North wind 6 to 8 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. Northeast wind 3 to 5 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85. Northeast wind around 6 mph.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. East wind around 6 mph becoming calm  in the evening.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 85. North wind 6 to 8 mph.
Tonight
Mostly clear, with a low around 65. Northeast wind 3 to 5 mph.
Tuesday
Sunny, with a high near 85. Northeast wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 66. East wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 87. Calm wind becoming southeast around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny, with a high near 96.
Friday Night
Partly cloudy, with a low around 75.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 95. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Vienna VASimilar City Names
 38.89°N 77.25°W (Elev. 348 ft)
7:29 am EDT Jul 21, 2025
8am EDT Jul 21, 2025-6pm EDT Jul 27, 2025
 
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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