Dangerous heat and humidity from the central U.S. to East Coast this weekend

Hot and very humid conditions will push the heat index to well over 100 degrees across a large portion of the central and eastern U.S. Excessive Heat Warnings and Heat Advisories are in effect for much of the Plains, Miss. Valley, Midwest, Ohio Valley, Mid-Atlantic and southern states. Be very cautious if you must do outdoor activities in these areas during the afternoon and evening this weekend. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

94°F

34°C

Humidity 44%
Wind Speed Vrbl 7 mph
Barometer 29.91 in (1012.4 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 23 Jul 2:52 pm EDT
Extended Forecast for

Fairfax VA

Heat Advisory until July 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until July 23, 08:00pm

    NOW until
    8:00pm Sat

    Heat Advisory

  • This
    Afternoon

    This Afternoon: Isolated showers and thunderstorms.  Mostly sunny and hot, with a high near 98. Heat index values as high as 104. West wind around 9 mph.  Chance of precipitation is 20%.

    Isolated
    T-storms

    High: 98 °F

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 73. Northwest wind 5 to 7 mph becoming southwest in the evening.  Chance of precipitation is 30%.

    Scattered
    T-storms then
    Partly Cloudy

    Low: 73 °F

  • Sunday

    Sunday: Sunny, with a high near 96. North wind around 5 mph becoming light and variable  in the morning.

    Sunny

    High: 96 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 75. Southeast wind around 6 mph.

    Partly Cloudy

    Low: 75 °F

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny and hot, with a high near 97. Southwest wind 3 to 8 mph.  Chance of precipitation is 30%.

    Chance
    T-storms

    High: 97 °F

  • Monday
    Night

    Monday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 76. Chance of precipitation is 30%.

    Chance
    T-storms

    Low: 76 °F

  • Tuesday

    Tuesday: A chance of showers and thunderstorms.  Partly sunny, with a high near 94. Chance of precipitation is 40%.

    Chance
    T-storms

    High: 94 °F

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 76. Chance of precipitation is 30%.

    Chance
    T-storms

    Low: 76 °F

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Mostly sunny and hot, with a high near 98. Heat index values as high as 104. West wind around 9 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 73. Northwest wind 5 to 7 mph becoming southwest in the evening. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 96. North wind around 5 mph becoming light and variable in the morning.
Sunday Night
Partly cloudy, with a low around 75. Southeast wind around 6 mph.
Monday
A chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 97. Southwest wind 3 to 8 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 94. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 74.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 93. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 73.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 89.
Click Map For Forecast
Point Forecast:
Fairfax VA
 38.85°N 77.29°W (Elev. 400 ft)
1:27 pm EDT Jul 23, 2016
3pm EDT Jul 23, 2016-6pm EDT Jul 30, 2016
 
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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