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

26°F

-3°C

Humidity 78%
Wind Speed Calm
Barometer 30.16 in (1021.6 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 13 Jan 3:52 am EST
Extended Forecast for

3 Miles NNW Catharpin VA

  • Today

    Today: Sunny, with a high near 51. Light south wind increasing to 5 to 10 mph in the morning.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: A slight chance of rain after 1am. Increasing clouds, with a low around 39. Southwest wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 39 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain. Cloudy, with a high near 52. Southwest wind around 6 mph. Chance of precipitation is 40%.

    High: 52 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 4am, then a slight chance of snow. Mostly cloudy, with a low around 24. Light and variable wind becoming northwest 12 to 17 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 50%.

    Low: 24 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday

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

    High: 31 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 51. Light south wind increasing to 5 to 10 mph in the morning.
Tonight
A slight chance of rain after 1am. Increasing clouds, with a low around 39. Southwest wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Wednesday
A chance of rain. Cloudy, with a high near 52. Southwest wind around 6 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of rain before 4am, then a slight chance of snow. Mostly cloudy, with a low around 24. Light and variable wind becoming northwest 12 to 17 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Thursday
Partly sunny, with a high near 31. Northwest wind around 18 mph, with gusts as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 15.
Friday
Mostly sunny, with a high near 35.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Partly sunny, with a high near 35.
Sunday Night
Partly cloudy, with a low around 17.
M.L.King Day
Mostly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Catharpin VA
 38.88°N 77.57°W (Elev. 305 ft)
Last Update:
3:53 am EST Jan 13, 2026
Forecast Valid:
4am EST Jan 13, 2026-6pm EST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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