Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

85°F

29°C

Humidity 75%
Wind Speed SE 7 mph
Barometer 29.94 in (1013.5 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 16 Jul 5:52 pm EDT
Extended Forecast for

Vienna VA

Flood Watch July 16, 06:45pm until July 17, 12:00am
Heat Advisory July 17, 11:00am until July 17, 08:00pm
Click here for hazard details and duration
Flood Watch
Heat Advisory
  •  
    Flood Watch July 16, 06:45pm until July 17, 12:00am

    NOW until 12:00am Thu

    Flood Watch

  • Tonight

    Low: 75 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 5pm.  Mostly sunny, with a high near 95. Heat index values as high as 105. West wind 8 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 76. Southwest wind around 7 mph becoming northwest after midnight.

    Low: 76 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 89. Northwest wind around 7 mph.  Chance of precipitation is 40%.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am.  Mostly cloudy, with a low around 72. Light and variable wind.  Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm, mainly after 2pm.  Mostly cloudy, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am.  Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 89. Chance of precipitation is 60%.

    High: 89 °F

    Partly Sunny
    then Showers
    Likely

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 75. South wind around 8 mph. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 95. Heat index values as high as 105. West wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 76. Southwest wind around 7 mph becoming northwest after midnight.
Friday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Northwest wind around 7 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 72. Light and variable wind. Chance of precipitation is 30%.
Saturday
Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 87. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Monday
A chance of showers after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Monday Night
A chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Vienna VA
 38.89°N 77.25°W (Elev. 348 ft)
5:33 pm EDT Jul 16, 2025
6pm EDT Jul 16, 2025-6pm EDT Jul 23, 2025
 
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Additional Resources

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