Dangerous, Heat Wave Persists in the Eastern U.S.; Severe Weather Expected in the Central Plains and Mid-Atlantic

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorms are expected to produce damaging wind gusts from the Upper Ohio Valley into the Mid Atlantic, and across the central Great Plains this afternoon and evening. Large hail and heavy rain is also possible across the Great Plains. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

83°F

28°C

Humidity 74%
Wind Speed NW 3 mph
Barometer 29.98 in (1014.8 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 4 Jul 3:52 am EDT
Extended Forecast for

2 Miles WNW Chantilly VA

Extreme Heat Warning July 4, 10:00am until July 4, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  • Independence Day

    Independence Day: Scattered showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm.  Sunny, then becoming mostly cloudy during the afternoon and hot, with a high near 100. Heat index values as high as 111. Calm wind becoming west 5 to 7 mph in the afternoon.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 100 °F

    Sunny then
    Showers
    Likely

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly between 1am and 2am.  Mostly cloudy, with a low around 73. Northwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 50%.

    Low: 73 °F

    Scattered
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm.  Sunny, then becoming mostly cloudy during the afternoon, with a high near 94. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 94 °F

    Mostly Sunny
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers.  Low around 71. Northeast wind 5 to 7 mph becoming calm  in the evening.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Showers

  • Monday

    Monday: A chance of showers, then showers and possibly a thunderstorm after 2pm.  High near 87. East wind 3 to 5 mph.  Chance of precipitation is 80%.

    High: 87 °F

    Chance
    Showers then
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a slight chance of showers.  Low around 69. Chance of precipitation is 80%.

    Low: 69 °F

    T-storms then
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 85. Chance of precipitation is 50%.

    High: 85 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers.  Mostly cloudy, with a low around 68. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 87. Chance of precipitation is 30%.

    High: 87 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Independence Day
Scattered showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Sunny, then becoming mostly cloudy during the afternoon and hot, with a high near 100. Heat index values as high as 111. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Scattered showers and thunderstorms, mainly between 1am and 2am. Mostly cloudy, with a low around 73. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Sunny, then becoming mostly cloudy during the afternoon, with a high near 94. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 71. Northeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 87. East wind 3 to 5 mph. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 69. Chance of precipitation is 80%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Chantilly VA
 38.88°N 77.43°W (Elev. 299 ft)
2:23 am EDT Jul 4, 2026
4am EDT Jul 4, 2026-6pm EDT Jul 10, 2026
 
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Additional Resources

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