Severe Weather and Heavy Rainfall from the High Plains to the Ohio Valley; Heat Continuing in the Central Plains and Southeast

A stationary front will be the focus for daily showers and thunderstorms capable of widely scattered flash flooding and severe weather from the High Plains to the Ohio Valley. Monsoonal thunderstorms could cause local flash flooding across the Southwest and the Great Basin. Dangerous heat continues across the Central Plains and Southeast. Many areas will see their hottest temperatures of the year. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

62°F

17°C

Humidity 80%
Wind Speed ESE 3 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 12 Aug 06:53 AM PDT
Extended Forecast for

Newcastle WA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 76. Light and variable wind.

    High: 76 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Light and variable wind.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. Light and variable wind.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 76. Light and variable wind.
Tonight
Mostly clear, with a low around 59. Calm wind.
Thursday
Sunny, with a high near 81. Light and variable wind.
Thursday Night
Mostly clear, with a low around 60. Light and variable wind.
Friday
Mostly sunny, with a high near 82. Light and variable wind.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Partly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Partly sunny, with a high near 81.
Sunday Night
Mostly cloudy, with a low around 60.
Monday
Partly sunny, with a high near 81.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 60.
Tuesday
Partly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.54°N 122.17°W (Elev. 397 ft)
12:50 am PDT Aug 12, 2026
7am PDT Aug 12, 2026-6pm PDT Aug 18, 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