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

Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Seattle, Seattle-Tacoma International Airport (KSEA)

Lat: 47.44472°NLon: 122.31361°WElev: 427.0ft.

Partly Cloudy

75°F

24°C

Humidity 47%
Wind Speed N 6 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 19 Aug 08:53 PM PDT
Extended Forecast for

3 Miles SSE Vashon WA

  • Tonight

    Tonight: Mostly clear, with a low around 57. North wind around 5 mph becoming calm after midnight.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. North wind around 6 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 77. Calm wind becoming north around 6 mph in the afternoon.

    High: 77 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 57. Calm wind becoming southwest 5 to 8 mph after midnight.

    Low: 57 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.

    High: 67 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 69.

    High: 69 °F

    Mostly Cloudy

  • Sunday Night

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

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 57. North wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 78. Calm wind becoming north 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 57. North wind around 6 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 77. Calm wind becoming north around 6 mph in the afternoon.
Friday Night
A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 57. Calm wind becoming southwest 5 to 8 mph after midnight.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 56.
Sunday
Mostly cloudy, with a high near 69.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Partly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Vashon WA
 47.4°N 122.45°W (Elev. 0 ft)
Last Update:
11:26 am PDT Aug 19, 2026
Forecast Valid:
9pm PDT Aug 19, 2026-6pm PDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation