Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Clear

73°F

23°C

Humidity 56%
Wind Speed S 6 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 21 Aug 08:30 PM PDT
Extended Forecast for

2 Miles NW Mercer Island WA

  • Tonight

    Tonight: A 10 percent chance of rain after 5am.  Mostly cloudy, with a low around 61. Light west southwest wind becoming south 5 to 10 mph in the evening.

    Low: 61 °F

    Cloudy then
    Slight Chance
    Rain

  • Saturday

    Saturday: A 40 percent chance of rain between 10am and noon.  Mostly cloudy, then gradually becoming sunny, with a high near 74. South southwest wind 8 to 10 mph.

    High: 74 °F

    Chance Rain
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 60. South wind 3 to 6 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 75. Southwest wind 3 to 6 mph.

    High: 75 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. North northeast wind 3 to 6 mph.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 10 percent chance of rain after 5am. Mostly cloudy, with a low around 61. Light west southwest wind becoming south 5 to 10 mph in the evening.
Saturday
A 40 percent chance of rain between 10am and noon. Mostly cloudy, then gradually becoming sunny, with a high near 74. South southwest wind 8 to 10 mph.
Saturday Night
Increasing clouds, with a low around 60. South wind 3 to 6 mph.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 75. Southwest wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 58. North northeast wind 3 to 6 mph.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
A slight chance of rain after 11am. Partly sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Partly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Partly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Mercer Island WA
 47.6°N 122.25°W (Elev. 3 ft)
1:55 pm PDT Aug 21, 2026
8pm PDT Aug 21, 2026-6pm PDT Aug 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database