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

43°F

6°C

Humidity 38%
Wind Speed S 7 mph
Barometer 30.18 in (1022.0 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 12 Jan 5:52 pm EST
Extended Forecast for

5 Miles NW Catharpin VA

  • Tonight

    Tonight: Mostly clear, with a low around 29. Southwest wind around 6 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 50. Light southwest wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 50 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. Southwest wind 8 to 13 mph, with gusts as high as 22 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain. Cloudy, with a high near 51. South wind around 6 mph. Chance of precipitation is 40%.

    High: 51 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 1am, then rain and snow likely. Mostly cloudy, with a low around 27. Light and variable wind becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 27 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: Snow likely, possibly mixed with rain, mainly before 7am. Mostly sunny, with a high near 34. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 34 °F

    Rain/Snow
    Likely then
    Slight Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17.

    Low: 17 °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 24.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 29. Southwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 50. Light southwest wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around 39. Southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Wednesday
A chance of rain. Cloudy, with a high near 51. South wind around 6 mph. Chance of precipitation is 40%.
Wednesday Night
Rain likely before 1am, then rain and snow likely. Mostly cloudy, with a low around 27. Light and variable wind becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
Snow likely, possibly mixed with rain, mainly before 7am. Mostly sunny, with a high near 34. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 35.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Mostly sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Partly sunny, with a high near 34.
Sunday Night
Partly cloudy, with a low around 15.
M.L.King Day
Mostly sunny, with a high near 31.
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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:
5:46 pm EST Jan 12, 2026
Forecast Valid:
6pm EST Jan 12, 2026-6pm EST Jan 19, 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