Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Plains to the Upper Midwest

A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S and linger through much of the work week. Numerous daily record highs and warm lows are likely. Severe thunderstorms are possible from the southern Plains through the Upper Mississippi Valley. Fire weather concerns are expected to persist across the Four Corners region. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fair

72°F

22°C

Humidity 97%
Wind Speed Calm
Barometer 30.13 in (1019.7 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 23 Jun 4:52 am EDT
Extended Forecast for

Fairfax VA

Extreme Heat Watch June 24, 11:00am until June 24, 09:00pm
Extreme Heat Warning June 23, 11:00am until June 23, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
Extreme Heat Warning
  • Today

    Today: Sunny and hot, with a high near 99. Heat index values as high as 110. Northwest wind 5 to 7 mph.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 79. Light northwest wind.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. Heat index values as high as 108. Northwest wind around 6 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 78. Light northwest wind.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 98. North wind 3 to 6 mph.  Chance of precipitation is 20%.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, mainly between 8pm and 2am.  Partly cloudy, with a low around 76. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 94. Chance of precipitation is 50%.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 74. Chance of precipitation is 50%.

    Low: 74 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 89. Chance of precipitation is 50%.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 99. Heat index values as high as 110. Northwest wind 5 to 7 mph.
Tonight
Mostly clear, with a low around 79. Light northwest wind.
Tuesday
Sunny and hot, with a high near 99. Heat index values as high as 108. Northwest wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 78. Light northwest wind.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 98. North wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfax VA
 38.85°N 77.32°W (Elev. 413 ft)
4:29 am EDT Jun 23, 2025
5am EDT Jun 23, 2025-6pm EDT Jun 29, 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