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

Heavy Rainfall in Florida; Critical Fire Weather in the Southeast; Heavy Rain and Flooding Concerns in Hawaii

Thunderstorms and periods of heavy to excessive rainfall will continue over Florida through Thursday; and will begin to impact the central Plains today. Dry and gusty conditions will promote elevated to critical fire weather conditions in the Southeast. A Kona Low is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the island chain through the weekend. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

Lat: 47.54548°NLon: 122.3147°WElev: 20.0ft.

Clear

61°F

16°C

Humidity 36%
Wind Speed WNW 9 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 08 Apr 04:35 PM PDT
Extended Forecast for

Mercer Island WA

  • Tonight

    Tonight: Clear, with a low around 40. North wind around 6 mph becoming calm in the evening.

    Low: 40 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 66. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46. North wind 5 to 7 mph becoming light and variable after midnight.

    Low: 46 °F

    Mostly Clear

  • Friday

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

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 49. South southwest wind 3 to 5 mph.

    Low: 49 °F

    Chance Rain

  • Saturday

    Saturday: Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 59. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 59 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain

  • Sunday

    Sunday: A chance of rain. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A chance of rain before 11pm. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Clear, with a low around 40. North wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 66. Calm wind becoming north northwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 46. North wind 5 to 7 mph becoming light and variable after midnight.
Friday
Mostly 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. South southwest wind 3 to 5 mph.
Saturday
Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 59. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 47.
Sunday
A chance of rain. Mostly cloudy, with a high near 53.
Sunday Night
A chance of rain before 11pm. Mostly cloudy, with a low around 46.
Monday
A slight chance of rain after 11am. 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 57.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 45.
Wednesday
A chance of rain. Mostly cloudy, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.6°N 122.22°W (Elev. 3 ft)
Last Update:
11:26 am PDT Apr 8, 2026
Forecast Valid:
4pm PDT Apr 8, 2026-6pm PDT Apr 15, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation