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.

Mostly Cloudy

48°F

9°C

Humidity 70%
Wind Speed NNW 5 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 17 Apr 09:53 AM PDT
Extended Forecast for

Newcastle WA

  • Today

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

    High: 55 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. Light and variable wind.

    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 49. Light and variable wind becoming east southeast around 5 mph after midnight.

    Low: 49 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 69. East wind 5 to 7 mph becoming north northwest in the afternoon.

    High: 69 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of rain.  Mostly cloudy, with a low around 50.

    Low: 50 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain.  Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 55. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 41. Light and variable wind.
Saturday
Partly sunny, with a high near 65. Light and variable wind.
Saturday Night
Mostly cloudy, with a low around 49. Light and variable wind becoming east southeast around 5 mph after midnight.
Sunday
Mostly cloudy, with a high near 69. East wind 5 to 7 mph becoming north northwest in the afternoon.
Sunday Night
Mostly cloudy, with a low around 49.
Monday
Partly sunny, with a high near 69.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 50.
Tuesday
A chance of rain. Mostly cloudy, with a high near 62.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 48.
Wednesday
A chance of rain. Mostly cloudy, with a high near 57.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 44.
Thursday
Partly sunny, with a high near 57.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
1:31 am PDT Apr 17, 2026
10am PDT Apr 17, 2026-6pm PDT Apr 23, 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