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.

A Few Clouds

70°F

21°C

Humidity 29%
Wind Speed W 9 mph
Barometer 30.27 in (1025.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 11 Apr 4:52 pm EDT
Extended Forecast for

Catharpin VA

  • Tonight

    Tonight: Mostly clear, with a low around 44. North wind around 6 mph becoming calm in the evening.

    Low: 44 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 72. Light and variable wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 59. South wind around 11 mph, with gusts as high as 22 mph.

    Low: 59 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 84. Southwest wind around 14 mph, with gusts as high as 26 mph.

    High: 84 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of showers before 2am. Partly cloudy, with a low around 61. West wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 44. North wind around 6 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 72. Light and variable wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 59. South wind around 11 mph, with gusts as high as 22 mph.
Monday
Partly sunny, with a high near 84. Southwest wind around 14 mph, with gusts as high as 26 mph.
Monday Night
A slight chance of showers before 2am. Partly cloudy, with a low around 61. West wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 93.
Wednesday Night
Mostly cloudy, with a low around 68.
Thursday
Partly sunny, with a high near 93.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
A chance of showers. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 88. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Catharpin VA
 38.86°N 77.58°W (Elev. 295 ft)
Last Update:
4:53 pm EDT Apr 11, 2026
Forecast Valid:
5pm EDT Apr 11, 2026-6pm EDT Apr 18, 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