Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

smoke

63°F

17°C

Humidity 77%
Wind Speed N 0 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 05 Aug 03:20 AM PDT
Extended Forecast for

Mercer Island WA

Heat Advisory August 5, 10:00am until August 6, 10:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: Patchy smoke before 4am. Clear, with a steady temperature around 61. Calm wind.

    Low: 61 °F

    Patchy Smoke

  • Wednesday

    Wednesday: Patchy smoke after 9am. Sunny, with a high near 87. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 87 °F

    Patchy Smoke

  • Wednesday Night

    Wednesday Night: Patchy smoke before 2am. Mostly clear, with a low around 61. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 61 °F

    Patchy Smoke

  • Thursday

    Thursday: Sunny, with a high near 89. Light and variable wind.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy smoke before 4am. Clear, with a steady temperature around 61. Calm wind.
Wednesday
Patchy smoke after 9am. Sunny, with a high near 87. Calm wind becoming northwest around 6 mph in the afternoon.
Wednesday Night
Patchy smoke before 2am. Mostly clear, with a low around 61. North northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 89. Light and variable wind.
Thursday Night
Mostly clear, with a low around 62. North northwest wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 63.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 59.
Monday
Mostly sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 79.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.22°W (Elev. 118 ft)
11:26 pm PDT Aug 4, 2026
3am PDT Aug 5, 2026-6pm PDT Aug 11, 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