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.

Partly Cloudy

30°F

-1°C

Humidity 85%
Wind Speed Calm
Barometer 30.11 in (1019.6 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 3 Dec 10:52 pm EST
Extended Forecast for

Catharpin VA

  • Tonight

    Tonight: Mostly clear, with a low around 23. Light and variable wind.

    Low: 23 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 43. Light north wind becoming northwest 8 to 13 mph in the morning. Winds could gust as high as 24 mph.

    High: 43 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 20. North wind 5 to 9 mph becoming calm after midnight.

    Low: 20 °F

    Increasing
    Clouds

  • Friday

    Friday: A chance of snow. Cloudy, with a high near 35. South wind 3 to 6 mph. Chance of precipitation is 50%.

    High: 35 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow, mixing with freezing rain after 10pm, then gradually ending. Cloudy, with a low around 22. Calm wind. Chance of precipitation is 30%.

    Low: 22 °F

    Chance Wintry
    Mix

  • Saturday

    Saturday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 23. Light and variable wind.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 43. Light north wind becoming northwest 8 to 13 mph in the morning. Winds could gust as high as 24 mph.
Thursday Night
Increasing clouds, with a low around 20. North wind 5 to 9 mph becoming calm after midnight.
Friday
A chance of snow. Cloudy, with a high near 35. South wind 3 to 6 mph. Chance of precipitation is 50%.
Friday Night
A chance of snow, mixing with freezing rain after 10pm, then gradually ending. Cloudy, with a low around 22. Calm wind. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 44.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
Partly sunny, with a high near 42.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
Partly sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 39.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
Mostly cloudy, with a high near 45.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Catharpin VA
 38.85°N 77.55°W (Elev. 233 ft)
Last Update:
9:53 pm EST Dec 3, 2025
Forecast Valid:
10pm EST Dec 3, 2025-6pm EST Dec 10, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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