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

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

73°F

23°C

Humidity 94%
Wind Speed S 8 mph
Barometer 29.85 in (1010.5 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 17 Aug 3:52 am EDT
Extended Forecast for

5 Miles NNW Haymarket VA

  • Today

    Today: Mostly sunny, with a high near 89. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers after 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 71. Northwest wind around 6 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86. North wind around 8 mph.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. Northwest wind 3 to 5 mph.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. West wind 3 to 5 mph.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 69. Chance of precipitation is 20%.

    Low: 69 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.

    High: 86 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 89. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Tonight
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers after 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 71. Northwest wind around 6 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 86. North wind around 8 mph.
Tuesday Night
Mostly clear, with a low around 66. Northwest wind 3 to 5 mph.
Wednesday
Sunny, with a high near 88. West wind 3 to 5 mph.
Wednesday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
Thursday
A slight chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Haymarket VA
 38.89°N 77.66°W (Elev. 407 ft)
Last Update:
3:33 am EDT Aug 17, 2026
Forecast Valid:
4am EDT Aug 17, 2026-6pm EDT Aug 23, 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