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

Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

56°F

13°C

Humidity 74%
Wind Speed S 3 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 31 Jul 05:53 AM PDT
Extended Forecast for

3 Miles ESE Newcastle WA

  • Today

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

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. Light and variable wind becoming south 6 to 11 mph after midnight.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of rain after 11am. Mostly cloudy, with a high near 68. South wind 13 to 16 mph, with gusts as high as 21 mph.

    High: 68 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 51. South wind 9 to 16 mph, with gusts as high as 21 mph.

    Low: 51 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 67. South wind 5 to 7 mph becoming calm in the morning.

    High: 67 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Monday Night

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

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 81. Light and variable wind.
Tonight
Mostly clear, with a low around 56. Light and variable wind becoming south 6 to 11 mph after midnight.
Saturday
A 40 percent chance of rain after 11am. Mostly cloudy, with a high near 68. South wind 13 to 16 mph, with gusts as high as 21 mph.
Saturday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 51. South wind 9 to 16 mph, with gusts as high as 21 mph.
Sunday
Partly sunny, with a high near 67. South wind 5 to 7 mph becoming calm in the morning.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Newcastle WA
 47.53°N 122.11°W (Elev. 1237 ft)
Last Update:
1:43 am PDT Jul 31, 2026
Forecast Valid:
6am PDT Jul 31, 2026-6pm PDT Aug 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation