Extreme Heat and Fire Weather Conditions in the West; Heavy Rain in the Southeast; Poor Air Quality

Extreme heat will begin to peak across the Desert Southwest. Multiple days of hot, dry and windy conditions are expected to bring fire weather concerns for portions of the Four Corners region into the central Great Basin and Rockies. Heavy rainfall and a flash flooding threat continues in the Southeast. Poor air quality persists from the Upper Midwest into the Northeast due to wildfire smoke. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Overcast

72°F

22°C

Humidity 68%
Wind Speed S 16 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 06 Aug 03:53 PM PDT
Extended Forecast for

Mercer Island WASimilar City Names

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 70. South wind around 8 mph.

    High: 70 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers likely, mainly before 5am.  Mostly cloudy, with a low around 58. South wind 5 to 8 mph becoming light and variable.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 8am.  Cloudy through mid morning, then gradual clearing, with a high near 71. Southeast wind around 5 mph becoming calm  in the afternoon.

    High: 71 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. Light and variable wind becoming northeast around 6 mph in the evening.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Friday Night

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

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 70. South wind around 8 mph.
Tonight
Showers likely, mainly before 5am. Mostly cloudy, with a low around 58. South wind 5 to 8 mph becoming light and variable. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 30 percent chance of showers, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 71. Southeast wind around 5 mph becoming calm in the afternoon.
Thursday Night
Partly cloudy, with a low around 56. Light and variable wind becoming northeast around 6 mph in the evening.
Friday
Mostly sunny, with a high near 75. Calm wind becoming west northwest around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Partly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 64.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WASimilar City Names
 47.58°N 122.22°W (Elev. 118 ft)
2:25 pm PDT Aug 6, 2025
4pm PDT Aug 6, 2025-6pm PDT Aug 13, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database