Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Tuesday

In the Northern Plains into the Upper Great Lakes and Mid-Atlantic, heavy to excessive rain may bring flash and urban flooding Tuesday. Severe thunderstorms producing damaging winds are most likely over parts of the Dakotas into Minnesota Tuesday afternoon into the overnight, with other isolated storms producing hail or wind over the northern High Plains. Extreme heat returns to the southwest U.S. 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 72%
Wind Speed WSW 4 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 07 Jul 02:35 AM PDT
Extended Forecast for

Mercer Island WA

  • Overnight

    Overnight: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 79. Light and variable wind becoming northwest around 5 mph in the afternoon.

    High: 79 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 58. North northeast wind 5 to 7 mph becoming calm  in the evening.

    Low: 58 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 73. Light south southwest wind.

    High: 73 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. North wind 5 to 7 mph becoming calm  after midnight.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 57. Calm wind.
Tuesday
Increasing clouds, with a high near 79. Light and variable wind becoming northwest around 5 mph in the afternoon.
Tuesday Night
Increasing clouds, with a low around 58. North northeast wind 5 to 7 mph becoming calm in the evening.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 73. Light south southwest wind.
Wednesday Night
Partly cloudy, with a low around 56. North wind 5 to 7 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 55.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Partly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 55.
Monday
Mostly sunny, with a high near 79.
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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 Jul 6, 2026
2am PDT Jul 7, 2026-6pm PDT Jul 13, 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