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

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

SEATTLE WEATHER FORECAST OFFICE (SEAW1)

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

NA

75°F

24°C

Humidity 59%
Wind Speed S 8 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 60°F (16°C)
Visibility NA
Last update 22 Aug 03:30 PM PDT
Extended Forecast for

Mountlake Terrace WA

  • Tonight

    Tonight: Increasing clouds, with a low around 58. West wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 74. South wind around 5 mph becoming calm in the afternoon.

    High: 74 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. North wind around 6 mph.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 74. North wind 6 to 10 mph.

    High: 74 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. North northwest wind 5 to 9 mph becoming light north after midnight.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain after 11pm. Partly cloudy, with a low around 56.

    Low: 56 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Increasing clouds, with a low around 58. West wind around 5 mph becoming calm in the evening.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 74. South wind around 5 mph becoming calm in the afternoon.
Sunday Night
Mostly clear, with a low around 55. North wind around 6 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 74. North wind 6 to 10 mph.
Monday Night
Mostly clear, with a low around 57. North northwest wind 5 to 9 mph becoming light north after midnight.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Partly sunny, with a high near 74.
Wednesday Night
A slight chance of rain after 11pm. Partly cloudy, with a low around 56.
Thursday
A slight chance of rain. Partly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Partly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountlake Terrace WA
 47.78°N 122.34°W (Elev. 400 ft)
Last Update:
11:26 am PDT Aug 22, 2026
Forecast Valid:
4pm PDT Aug 22, 2026-6pm PDT Aug 29, 2026
 
Forecast Discussion
 
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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