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

51°F

11°C

Humidity 39%
Wind Speed Vrbl 6 mph
Barometer 30.24 in (1024.0 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 19 Mar 12:52 pm EDT
Extended Forecast for

Fairfax VA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 56. Calm wind becoming southwest around 5 mph.

    High: 56 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 38. Light south wind.

    Low: 38 °F

    Mostly Clear

  • Friday

    Friday: Scattered showers after 2pm. Increasing clouds, with a high near 67. Light south wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 30%.

    High: 67 °F

    Sunny then
    Scattered
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 48. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 68. Northwest wind around 7 mph.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.

    Low: 47 °F

    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 56. Calm wind becoming southwest around 5 mph.
Tonight
Mostly clear, with a low around 38. Light south wind.
Friday
Scattered showers after 2pm. Increasing clouds, with a high near 67. Light south wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 30%.
Friday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 48. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 68. Northwest wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfax VA
 38.85°N 77.32°W (Elev. 413 ft)
Last Update:
1:35 pm EDT Mar 19, 2026
Forecast Valid:
1pm EDT Mar 19, 2026-6pm EDT Mar 25, 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