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

58°F

14°C

Humidity 36%
Wind Speed Vrbl 5 mph
Barometer 30.14 in (1020.8 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 19 Mar 4:52 pm EDT
Extended Forecast for

5 Miles NW Catharpin VA

  • Tonight

    Tonight: Mostly clear, with a low around 37. Light southwest wind.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Scattered showers after 2pm. Increasing clouds, with a high near 67. Light south wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 40%.

    High: 67 °F

    Sunny then
    Scattered
    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 47. Southwest wind 6 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 69. North wind around 7 mph.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45. Light and variable wind becoming southeast around 5 mph after midnight.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: A chance of rain before 8am. Mostly sunny, with a high near 62. Breezy. Chance of precipitation is 30%.

    High: 62 °F

    Breezy.
    Chance Rain
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 37. Light southwest wind.
Friday
Scattered showers after 2pm. Increasing clouds, with a high near 67. Light south wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 40%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 47. Southwest wind 6 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 69. North wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 45. Light and variable wind becoming southeast around 5 mph after midnight.
Sunday
Partly sunny, with a high near 75.
Sunday Night
A chance of rain after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Monday
A chance of rain before 8am. Mostly sunny, with a high near 62. Breezy. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 31.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 38.
Thursday
Partly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Catharpin VA
 38.9°N 77.62°W (Elev. 348 ft)
Last Update:
4:53 pm EDT Mar 19, 2026
Forecast Valid:
5pm EDT Mar 19, 2026-6pm EDT Mar 26, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation