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

Dangerous Heat to Continue through the Holiday Weekend; Severe Storms on Friday from the Plains to the Mid-Atlantic

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing across the eastern U.S. through the Independence Day holiday weekend. Peak heat indices of up to 115 degrees are possible. Isolated to scattered severe thunderstorms are possible from the northern/central Plains into the Midwest, Ohio Valley, and Mid-Atlantic Friday. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Overcast

61°F

16°C

Humidity 80%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 03 Jul 03:53 AM PDT
Extended Forecast for

Mercer Island WA

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 75. Light south southwest wind.

    High: 75 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a low around 57. North northwest wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Increasing
    Clouds

  • Independence Day

    Independence Day: Cloudy, then gradually becoming mostly sunny, with a high near 75. Calm wind becoming southwest around 5 mph.

    High: 75 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy during the early evening, then becoming mostly clear, with a low around 55. North northeast wind 6 to 9 mph.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75. North wind 5 to 9 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 75. Light south southwest wind.
Tonight
Increasing clouds, with a low around 57. North northwest wind around 5 mph becoming calm in the evening.
Independence Day
Cloudy, then gradually becoming mostly sunny, with a high near 75. Calm wind becoming southwest around 5 mph.
Saturday Night
Mostly cloudy during the early evening, then becoming mostly clear, with a low around 55. North northeast wind 6 to 9 mph.
Sunday
Sunny, with a high near 75. North wind 5 to 9 mph.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Partly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 76.
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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 Jul 2, 2026
Forecast Valid:
4am PDT Jul 3, 2026-6pm PDT Jul 9, 2026
 
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