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

47°F

8°C

Humidity 52%
Wind Speed S 7 mph
Barometer 29.46 in (997.7 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 14 Jan 6:52 pm EST
Extended Forecast for

5 Miles NW Catharpin VA

  • Tonight

    Tonight: A chance of rain, mainly before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 26. West wind 5 to 10 mph becoming northwest 13 to 18 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 30%.

    Low: 26 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 30. Northwest wind around 18 mph, with gusts as high as 31 mph.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 19. West wind 8 to 14 mph, with gusts as high as 26 mph.

    Low: 19 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 36. South wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 36 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 30. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain and snow showers before 1pm, then a slight chance of rain showers. Partly sunny, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 16.

    Low: 16 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain, mainly before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 26. West wind 5 to 10 mph becoming northwest 13 to 18 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 30. Northwest wind around 18 mph, with gusts as high as 31 mph.
Thursday Night
Mostly clear, with a low around 19. West wind 8 to 14 mph, with gusts as high as 26 mph.
Friday
Increasing clouds, with a high near 36. South wind 6 to 13 mph, with gusts as high as 22 mph.
Friday Night
Mostly cloudy, with a low around 30. South wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday
A chance of rain and snow showers before 1pm, then a slight chance of rain showers. Partly sunny, with a high near 45. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 16.
M.L.King Day
Mostly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
Mostly clear, with a low around 13.
Wednesday
Mostly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Catharpin VA
 38.9°N 77.62°W (Elev. 348 ft)
Last Update:
6:53 pm EST Jan 14, 2026
Forecast Valid:
7pm EST Jan 14, 2026-6pm EST Jan 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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