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

Severe Weather and Heavy Rainfall in the Ohio Valley; Heat Continuing in the South and Southeast

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians tonight. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

79°F

26°C

Humidity 41%
Wind Speed N 6 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 11 Aug 05:35 PM PDT
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Mostly clear, with a low around 58. North wind around 6 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76. Light and variable wind.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. Light and variable wind.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 80. Light and variable wind.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59. Light and variable wind.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 58. North wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 76. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 58. Light and variable wind.
Thursday
Mostly sunny, with a high near 80. Light and variable wind.
Thursday Night
Mostly clear, with a low around 59. Light and variable wind.
Friday
Mostly sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 58.
Saturday
Partly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Partly sunny, with a high near 81.
Sunday Night
Mostly cloudy, with a low around 59.
Monday
Partly sunny, with a high near 80.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 59.
Tuesday
A slight chance of rain. Partly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.52°N 122.17°W (Elev. 400 ft)
Last Update:
11:26 am PDT Aug 11, 2026
Forecast Valid:
5pm PDT Aug 11, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation