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Sinlaku Continues to Impact the Marianas; Severe Weather for the Central Plains and Northeast; Record Warmth for mid-Atlantic to Southeast

Sinlaku continues to affect the Marianas as it moves north through Friday. Meanwhile, severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley today and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

Lat: 47.49509°NLon: 122.21437°WElev: 23.0ft.

Partly Cloudy

48°F

9°C

Humidity 61%
Wind Speed N 0 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 16 Apr 12:00 PM PDT
Extended Forecast for

Newcastle WA

  • This Afternoon

    This Afternoon: Sunny, with a high near 54. West southwest wind 5 to 8 mph.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. South southwest wind 5 to 8 mph becoming southeast after midnight.

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 55. Calm wind becoming north around 5 mph in the afternoon.

    High: 55 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41. North wind around 5 mph becoming light and variable in the evening.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 65. Light and variable wind.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 68.

    High: 68 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 54. West southwest wind 5 to 8 mph.
Tonight
Mostly cloudy, with a low around 38. South southwest wind 5 to 8 mph becoming southeast after midnight.
Friday
Mostly sunny, with a high near 55. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 41. North wind around 5 mph becoming light and variable in the evening.
Saturday
Partly sunny, with a high near 65. Light and variable wind.
Saturday Night
Mostly cloudy, with a low around 48.
Sunday
Mostly cloudy, with a high near 68.
Sunday Night
Mostly cloudy, with a low around 48.
Monday
Partly sunny, with a high near 69.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 48.
Tuesday
A chance of rain. Partly sunny, with a high near 62.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 49.
Wednesday
A chance of rain. Mostly cloudy, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
Last Update:
11:27 am PDT Apr 16, 2026
Forecast Valid:
12pm PDT Apr 16, 2026-6pm PDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation