Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

79°F

26°C

Humidity 44%
Wind Speed SW 4 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Aug 07:00 PM PDT
Extended Forecast for

Renton Municipal WA

  • Tonight

    Tonight: Increasing clouds, with a low around 59. Calm wind becoming south around 5 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 78. Light and variable wind.

    High: 78 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain before 11am.  Mostly cloudy, with a high near 72.

    High: 72 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 59. Calm wind becoming south around 5 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 78. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 59. Calm wind.
Thursday
Mostly sunny, with a high near 82. Calm wind becoming north northwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 60. North northwest wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 59.
Saturday
A chance of rain before 11am. Mostly cloudy, with a high near 72.
Saturday Night
Mostly cloudy, with a low around 58.
Sunday
Partly sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 57.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Partly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Renton Municipal WA
 47.52°N 122.2°W (Elev. 200 ft)
11:26 am PDT Aug 18, 2026
7pm PDT Aug 18, 2026-6pm PDT Aug 25, 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