Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

52°F

11°C

Humidity 66%
Wind Speed NNW 4 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 17 Apr 08:35 PM PDT
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. North wind around 5 mph becoming calm  in the evening.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67. Light and variable wind.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 49. Light and variable wind becoming east around 5 mph after midnight.

    Low: 49 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 70. East wind around 6 mph becoming north in the afternoon.

    High: 70 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 49. Northeast wind 5 to 7 mph.

    Low: 49 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain after 11pm.  Mostly cloudy, with a low around 49.

    Low: 49 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain, mainly after 11am.  Mostly cloudy, with a high near 64.

    High: 64 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A chance of rain.  Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 41. North wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 67. Light and variable wind.
Saturday Night
Mostly cloudy, with a low around 49. Light and variable wind becoming east around 5 mph after midnight.
Sunday
Mostly cloudy, with a high near 70. East wind around 6 mph becoming north in the afternoon.
Sunday Night
Mostly cloudy, with a low around 49. Northeast wind 5 to 7 mph.
Monday
Partly sunny, with a high near 70.
Monday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 49.
Tuesday
A chance of rain, mainly after 11am. Mostly cloudy, with a high near 64.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 49.
Wednesday
A chance of rain. Mostly cloudy, with a high near 56.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 45.
Thursday
A slight chance of rain. Partly sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
11:26 am PDT Apr 17, 2026
8pm PDT Apr 17, 2026-6pm PDT Apr 24, 2026
 
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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