National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

86°F

30°C

Humidity 35%
Wind Speed SW 15 G 24 mph
Barometer 29.92 in (1012.8 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 14 Apr 5:52 pm EDT
Extended Forecast for

5 Miles NW Catharpin VA

  • Tonight

    Tonight: Isolated showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Isolated
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 92. Southwest wind 3 to 8 mph.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 67. Southwest wind 3 to 6 mph.

    Low: 67 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 90. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 90 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 67. West wind 5 to 7 mph. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm. Mostly clear, with a low around 60. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 92. Southwest wind 3 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 67. Southwest wind 3 to 6 mph.
Thursday
Partly sunny, with a high near 90. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Thursday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 67. West wind 5 to 7 mph. Chance of precipitation is 30%.
Friday
A chance of showers, mainly after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
A chance of showers before 8pm. Mostly clear, with a low around 60. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Sunday Night
Showers likely. Partly cloudy, with a low around 41. Chance of precipitation is 60%.
Monday
Sunny, with a high near 59.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Sunny, with a high near 64.
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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:
5:36 pm EDT Apr 14, 2026
Forecast Valid:
7pm EDT Apr 14, 2026-6pm EDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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