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

Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Reagan National Airport, DC (KDCA)

Lat: 38.85°NLon: 77.03°WElev: 13ft.

Fog/Mist

76°F

24°C

Humidity 88%
Wind Speed W 6 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 72°F (22°C)
Visibility 3.00 mi
Heat Index76°F (24°C)
Last update 5 Jul 5:52 am EDT
Extended Forecast for

McLean VA

Heat Advisory July 5, 10:00am until July 5, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 96. Heat index values as high as 105. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 96 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then a slight chance of showers between 2am and 5am. Patchy fog between 11pm and midnight. Low around 72. Southwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 72 °F

    Showers and
    Patchy Fog
    then Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 87. East wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Low around 70. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 70 °F

    T-storms then
    Showers

  • Tuesday

    Tuesday: Showers likely before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 84. Northeast wind around 6 mph. Chance of precipitation is 70%.

    High: 84 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 40%.

    High: 90 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 96. Heat index values as high as 105. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.
Tonight
Showers and thunderstorms before 2am, then a slight chance of showers between 2am and 5am. Patchy fog between 11pm and midnight. Low around 72. Southwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 87. East wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and thunderstorms likely before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Low around 70. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Showers likely before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 84. Northeast wind around 6 mph. 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, then a slight chance of showers after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
McLean VA
 38.93°N 77.19°W (Elev. 299 ft)
Last Update:
4:53 am EDT Jul 5, 2026
Forecast Valid:
6am EDT Jul 5, 2026-6pm EDT Jul 11, 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