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

Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

67°F

19°C

Humidity 75%
Wind Speed N 0 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 59°F (15°C)
Visibility 7.00 mi
Last update 14 Aug 12:53 AM PDT
Extended Forecast for

Newcastle WA

  • Overnight

    Overnight: Mostly clear, with a low around 58. Light and variable wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 80. Light and variable wind.

    High: 80 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 58. Light and variable wind.

    Low: 58 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 79. Light and variable wind.

    High: 79 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. North northwest wind around 6 mph becoming calm in the evening.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 58. Light and variable wind.
Friday
Partly sunny, then gradually becoming sunny, with a high near 80. Light and variable wind.
Friday Night
Increasing clouds, with a low around 58. Light and variable wind.
Saturday
Partly sunny, with a high near 79. Light and variable wind.
Saturday Night
Partly cloudy, with a low around 58. North northwest wind around 6 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Partly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Partly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly cloudy, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Partly sunny, with a high near 77.
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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:
12:40 am PDT Aug 14, 2026
Forecast Valid:
1am PDT Aug 14, 2026-6pm PDT Aug 20, 2026
 
Forecast Discussion
 
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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