Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast across parts of the Upper Midwest into the Great Lakes, the Northeast, and the central High Plains. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Mostly Cloudy

63°F

17°C

Humidity 55%
Wind Speed S 6 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 01 Jul 11:53 AM PDT
Extended Forecast for

Newcastle WA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 65. South southwest wind around 6 mph.

    High: 65 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. Light and variable wind becoming southeast around 6 mph after midnight.

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 10 percent chance of rain after 5pm.  Mostly cloudy, with a high near 64. South wind 5 to 7 mph.

    High: 64 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A 10 percent chance of rain before 7pm.  Mostly cloudy, with a low around 55. South wind 3 to 5 mph.

    Low: 55 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 72. South southwest wind 3 to 5 mph.

    High: 72 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Independence Day

    Independence Day: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 65. South southwest wind around 6 mph.
Tonight
Mostly cloudy, with a low around 52. Light and variable wind becoming southeast around 6 mph after midnight.
Thursday
A 10 percent chance of rain after 5pm. Mostly cloudy, with a high near 64. South wind 5 to 7 mph.
Thursday Night
A 10 percent chance of rain before 7pm. Mostly cloudy, with a low around 55. South wind 3 to 5 mph.
Friday
Partly sunny, with a high near 72. South southwest wind 3 to 5 mph.
Friday Night
Mostly cloudy, with a low around 55.
Independence Day
Partly sunny, with a high near 72.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
11:26 am PDT Jul 1, 2026
12pm PDT Jul 1, 2026-6pm PDT Jul 7, 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