Tropical Storm Edouard to Impact the Northwest Gulf Coast; Heat Expands Eastward

Tropical Storm Edouard will bring tropical storm to hurricane conditions, heavy rainfall, flash and some river flooding, and storm surge to portions of Upper Texas and southwestern Louisiana coasts into Wednesday. Severe thunderstorms are possible in the Central Plains and Mid-Atlantic. Hot and humid conditions will expand from the Central Plains into the Ohio Valley and Mid-Atlantic. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

64°F

18°C

Humidity 72%
Wind Speed SSE 8 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 01 Sep 10:53 AM PDT
Extended Forecast for

Mercer Island WA

  • Today

    Today: Partly sunny, with a high near 74. Southwest wind 7 to 9 mph.

    High: 74 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. South wind 6 to 9 mph.

    Low: 58 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain, mainly after noon.  High near 69. South wind 6 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 69 °F

    Chance Rain
    then Rain

  • Wednesday Night

    Wednesday Night: Rain, mainly before 11pm.  Low around 53. South wind around 9 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 53 °F

    Rain then
    Chance Rain

  • Thursday

    Thursday: Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am.  Mostly cloudy, with a high near 65. South wind 5 to 7 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of rain, mainly before 11pm.  Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance Rain
    then Slight
    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain before 11am.  Mostly cloudy, with a high near 68.

    High: 68 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Friday Night

    Friday Night: A chance of rain, mainly after 11pm.  Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain before 11am.  Mostly sunny, with a high near 71.

    High: 71 °F

    Chance Rain
    then Mostly
    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 74. Southwest wind 7 to 9 mph.
Tonight
Mostly cloudy, with a low around 58. South wind 6 to 9 mph.
Wednesday
Rain, mainly after noon. High near 69. South wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain, mainly before 11pm. Low around 53. South wind around 9 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 65. South wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 50 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 52.
Friday
A 20 percent chance of rain before 11am. Mostly cloudy, with a high near 68.
Friday Night
A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 53.
Saturday
A chance of rain before 11am. Mostly sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
A slight chance of rain. Partly sunny, with a high near 72.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 56.
Labor Day
A chance of rain. Partly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.56°N 122.21°W (Elev. 121 ft)
11:26 pm PDT Aug 31, 2026
11am PDT Sep 1, 2026-6pm PDT Sep 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