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.

Mostly Cloudy

84°F

29°C

Humidity 36%
Wind Speed S 5 mph
Barometer 29.88 in (1011.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 15 Apr 7:52 pm EDT
Extended Forecast for

Fairfax VA

  • Tonight

    Tonight: Partly cloudy, with a low around 69. Southwest wind 6 to 8 mph.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 91. Light southwest wind increasing to 5 to 9 mph in the morning.

    High: 91 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers, mainly after 2am. Partly cloudy, with a low around 68. Southwest wind around 8 mph becoming west after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers. Partly sunny, with a high near 83. Northwest wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. North wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.

    Low: 53 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 50%.

    High: 66 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 69. Southwest wind 6 to 8 mph.
Thursday
Mostly sunny, with a high near 91. Light southwest wind increasing to 5 to 9 mph in the morning.
Thursday Night
A chance of showers, mainly after 2am. Partly cloudy, with a low around 68. Southwest wind around 8 mph becoming west after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 83. Northwest wind 6 to 8 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 61. North wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.
Sunday
A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 50%.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fairfax VA
 38.85°N 77.29°W (Elev. 400 ft)
Last Update:
7:53 pm EDT Apr 15, 2026
Forecast Valid:
8pm EDT Apr 15, 2026-6pm EDT Apr 22, 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