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

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley Thursday afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

40°F

4°C

Humidity 82%
Wind Speed N 0 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 09 Apr 04:53 AM PDT
Extended Forecast for

Mercer Island WA

  • Today

    Today: Sunny, with a high near 66. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. North wind around 6 mph becoming calm in the evening.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 70. Light and variable wind.

    High: 70 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 49. Light west southwest wind.

    Low: 49 °F

    Chance Rain

  • Saturday

    Saturday: Rain likely, mainly before 11am. Mostly cloudy, with a high near 60. Southwest wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Rain Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain

  • Sunday

    Sunday: A 40 percent chance of rain. Mostly cloudy, with a high near 55.

    High: 55 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A slight chance of rain before 11pm. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 66. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Tonight
Mostly clear, with a low around 45. North wind around 6 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 70. Light and variable wind.
Friday Night
A 40 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 49. Light west southwest wind.
Saturday
Rain likely, mainly before 11am. Mostly cloudy, with a high near 60. Southwest wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 47.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 55.
Sunday Night
A slight chance of rain before 11pm. Mostly cloudy, with a low around 47.
Monday
Mostly cloudy, with a high near 55.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
A chance of rain. Mostly cloudy, with a high near 55.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 44.
Wednesday
Rain likely. Mostly cloudy, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.56°N 122.21°W (Elev. 121 ft)
Last Update:
11:26 pm PDT Apr 8, 2026
Forecast Valid:
5am PDT Apr 9, 2026-6pm PDT Apr 15, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation