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.

A Few Clouds

42°F

6°C

Humidity 40%
Wind Speed N 3 mph
Barometer 30.47 in (1032.0 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 24 Mar 11:52 am EDT
Extended Forecast for

Fairfax VA

  • This Afternoon

    This Afternoon: Sunny, with a high near 52. North wind around 5 mph becoming calm.

    High: 52 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 38. Calm wind becoming south around 6 mph after midnight.

    Low: 38 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 59. South wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 59 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 48. South wind around 9 mph.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 74. South wind 9 to 13 mph, with gusts as high as 22 mph.

    High: 74 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of rain, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.

    Low: 56 °F

    Slight Chance
    Rain then
    Rain Likely

  • Friday

    Friday: Rain likely, mainly before 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.

    High: 63 °F

    Rain Likely

  • Friday Night

    Friday Night: A chance of rain before 2am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 52. North wind around 5 mph becoming calm.
Tonight
Increasing clouds, with a low around 38. Calm wind becoming south around 6 mph after midnight.
Wednesday
Partly sunny, with a high near 59. South wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly cloudy, with a low around 48. South wind around 9 mph.
Thursday
Partly sunny, with a high near 74. South wind 9 to 13 mph, with gusts as high as 22 mph.
Thursday Night
A slight chance of rain, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Friday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Friday Night
A chance of rain before 2am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 50.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fairfax VA
 38.85°N 77.32°W (Elev. 413 ft)
Last Update:
10:54 am EDT Mar 24, 2026
Forecast Valid:
12pm EDT Mar 24, 2026-6pm EDT Mar 30, 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