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

Strong Storms and Heavy Rainfall Threats; Dangerous Heat for Southern Plains into the Southwest

Thunderstorms, some severe, will impact areas of the Plains into the Midwest today. Rainfall can be locally heavy as well from these storms with isolated instances of flash flooding. Monsoonal flow will enhance rainfall across the Four Corners into the central Rockies today. Meanwhile, summer heat continues for the southern Plains, Southwest into southern California. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Clear

67°F

19°C

Humidity 75%
Wind Speed N 0 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 25 Aug 08:53 AM PDT
Extended Forecast for

Mercer Island WA

  • Today

    Today: Patchy smoke before 11am. Sunny, with a high near 87. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 87 °F

    Patchy Smoke
    then Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 59. South wind 5 to 8 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79. South southwest wind around 5 mph.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 59. South wind around 6 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 75. South wind 6 to 8 mph.

    High: 75 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain before 11am, then a chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 70.

    High: 70 °F

    Chance
    Showers

Detailed Forecast

Today
Patchy smoke before 11am. Sunny, with a high near 87. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tonight
Increasing clouds, with a low around 59. South wind 5 to 8 mph.
Wednesday
Mostly sunny, with a high near 79. South southwest wind around 5 mph.
Wednesday Night
Increasing clouds, with a low around 59. South wind around 6 mph.
Thursday
Partly sunny, with a high near 75. South wind 6 to 8 mph.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Partly sunny, with a high near 74.
Friday Night
A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 56.
Saturday
A chance of rain before 11am, then a chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 70.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
Partly sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 55.
Monday
A slight chance of rain. Partly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.22°W (Elev. 118 ft)
Last Update:
11:26 pm PDT Aug 24, 2026
Forecast Valid:
9am PDT Aug 25, 2026-6pm PDT Aug 31, 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