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Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

82°F

28°C

Humidity 60%
Wind Speed Calm
Barometer 29.95 in (1013.9 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 21 Jul 12:52 am EDT
Extended Forecast for

2 Miles WNW Washington-Dulles International Airport VA

Heat Advisory July 21, 10:00am until July 21, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: Partly cloudy, with a low around 75. Light west wind.

    Partly Cloudy

    Low: 75 °F

  • Friday

    Friday: Isolated showers and thunderstorms.  Mostly sunny, with a high near 96. Heat index values as high as 105. Northwest wind around 6 mph.  Chance of precipitation is 20%.

    Isolated
    T-storms

    High: 96 °F

  • Friday
    Night

    Friday Night: Scattered showers and thunderstorms before 2am.  Partly cloudy, with a low around 73. Northwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 30%.

    Scattered
    T-storms

    Low: 73 °F

  • Saturday

    Saturday: A chance of showers and thunderstorms after 8am.  Partly sunny, with a high near 93. Heat index values as high as 100. Light and variable wind becoming southwest 5 to 7 mph in the afternoon.  Chance of precipitation is 40%.

    Chance
    T-storms

    High: 93 °F

  • Saturday
    Night

    Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 74. Southwest wind 5 to 7 mph becoming calm  after midnight.  Chance of precipitation is 50%.

    Chance
    T-storms

    Low: 74 °F

  • Sunday

    Sunday: A chance of showers and thunderstorms.  Mostly cloudy, with a high near 93. Chance of precipitation is 50%.

    Chance
    T-storms

    High: 93 °F

  • Sunday
    Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 73. Chance of precipitation is 30%.

    Chance
    T-storms

    Low: 73 °F

  • Monday

    Monday: A chance of showers and thunderstorms.  Partly sunny, with a high near 91. Chance of precipitation is 30%.

    Chance
    T-storms

    High: 91 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 69.

    Mostly Cloudy

    Low: 69 °F

Detailed Forecast

Overnight
Partly cloudy, with a low around 75. Light west wind.
Friday
Isolated showers and thunderstorms. Mostly sunny, with a high near 96. Heat index values as high as 105. Northwest wind around 6 mph. Chance of precipitation is 20%.
Friday Night
Scattered showers and thunderstorms before 2am. Partly cloudy, with a low around 73. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms after 8am. Partly sunny, with a high near 93. Heat index values as high as 100. Light and variable wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Southwest wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 93. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 69.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 87.
Click Map For Forecast
Point Forecast:
2 Miles WNW Washington-Dulles International Airport VA
 38.98°N 77.5°W (Elev. 256 ft)
1:27 am EDT Jul 21, 2017
1am EDT Jul 21, 2017-6pm EDT Jul 27, 2017
 
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