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 WEATHER FORECAST OFFICE (SEAW1)

Lat: 47.68528°NLon: 122.25111°WElev: 29.0ft.

NA

79°F

26°C

Humidity 51%
Wind Speed N 10 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 59°F (15°C)
Visibility NA
Heat Index80°F (27°C)
Last update 19 Aug 06:30 PM PDT
Extended Forecast for

Shoreline WA

  • Tonight

    Tonight: Mostly clear, with a low around 56. North northwest wind around 5 mph becoming calm after midnight.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 57. North northwest wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Increasing
    Clouds

  • Friday

    Friday: Partly sunny, with a high near 78. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 78 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 59. North northwest wind around 5 mph becoming calm.

    Low: 59 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 71. Chance of precipitation is 50%.

    High: 71 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 72.

    High: 72 °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 56. North northwest wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 57. North northwest wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 78. Calm wind becoming north northwest around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 59. North northwest wind around 5 mph becoming calm.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 71. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 58.
Sunday
Mostly cloudy, with a high near 72.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shoreline WA
 47.76°N 122.33°W (Elev. 400 ft)
Last Update:
11:26 am PDT Aug 19, 2026
Forecast Valid:
7pm PDT Aug 19, 2026-6pm PDT Aug 26, 2026
 
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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