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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

66°F

19°C

Humidity 63%
Wind Speed SSW 3 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 28 Aug 12:00 PM PDT
Extended Forecast for

Renton WA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 73. West wind 3 to 5 mph.

    High: 73 °F

    Mostly Sunny

  • Tonight

    Tonight: Rain, mainly after 4am. Low around 56. North northwest wind around 6 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Slight Chance
    Rain then
    Rain

  • Saturday

    Saturday: Rain and thunderstorms likely before 2pm, then a chance of rain. Cloudy, then gradually becoming mostly sunny, with a high near 71. South southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55. South wind around 7 mph.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 72. South southwest wind around 6 mph.

    High: 72 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Monday Night

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

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 73. West wind 3 to 5 mph.
Tonight
Rain, mainly after 4am. Low around 56. North northwest wind around 6 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain and thunderstorms likely before 2pm, then a chance of rain. Cloudy, then gradually becoming mostly sunny, with a high near 71. South southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Mostly cloudy, with a low around 55. South wind around 7 mph.
Sunday
Mostly cloudy, with a high near 72. South southwest wind around 6 mph.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Partly sunny, with a high near 75.
Tuesday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 57.
Wednesday
Rain. Mostly cloudy, with a high near 67.
Wednesday Night
Rain. Mostly cloudy, with a low around 54.
Thursday
A chance of rain. Mostly cloudy, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Renton WA
 47.49°N 122.22°W (Elev. 82 ft)
Last Update:
11:26 am PDT Aug 28, 2026
Forecast Valid:
12pm PDT Aug 28, 2026-6pm PDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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