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

60°F

16°C

Humidity 83%
Wind Speed N 0 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 28 Aug 04:53 AM PDT
Extended Forecast for

Renton WA

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 73. Calm wind becoming south around 5 mph in the morning.

    High: 73 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Rain likely, mainly after 2am. Increasing clouds, with a low around 56. North wind 5 to 7 mph becoming light and variable. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Chance Rain
    then Rain
    Likely

  • Saturday

    Saturday: Rain and thunderstorms likely before 3pm, then a chance of showers and thunderstorms, mainly between 3pm and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 70. West southwest wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 55. Light and variable wind becoming south southwest around 6 mph after midnight.

    Low: 55 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 71. South southwest wind around 6 mph.

    High: 71 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain after 11am. Partly sunny, with a high near 71.

    High: 71 °F

    Slight Chance
    Rain

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 73. Calm wind becoming south around 5 mph in the morning.
Tonight
Rain likely, mainly after 2am. Increasing clouds, with a low around 56. North wind 5 to 7 mph becoming light and variable. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain and thunderstorms likely before 3pm, then a chance of showers and thunderstorms, mainly between 3pm and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 70. West southwest wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 55. Light and variable wind becoming south southwest around 6 mph after midnight.
Sunday
Mostly cloudy, with a high near 71. South southwest wind around 6 mph.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Partly sunny, with a high near 73.
Monday Night
Mostly cloudy, with a low around 56.
Tuesday
A slight chance of rain after 11am. Partly sunny, with a high near 71.
Tuesday Night
A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 56.
Wednesday
Rain likely. Mostly cloudy, with a high near 65.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 55.
Thursday
A chance of rain. Partly sunny, with a high near 66.
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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 pm PDT Aug 27, 2026
Forecast Valid:
5am PDT Aug 28, 2026-6pm PDT Sep 3, 2026
 
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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