Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

SEATTLE WEATHER FORECAST OFFICE (SEAW1)

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

NA

42°F

6°C

Humidity 85%
Wind Speed WNW 5 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 38°F (3°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 20 Jan 07:30 PM PST
Extended Forecast for

Mountlake Terrace WA

  • Tonight

    Tonight: Areas of fog before midnight.  Otherwise, mostly clear, with a low around 32. Calm wind.

    Low: 32 °F

    Areas Fog
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Areas of fog between 9am and 10am.  Otherwise, mostly sunny, with a high near 47. Calm wind.

    High: 47 °F

    Areas Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 45. Calm wind.

    High: 45 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Tonight
Areas of fog before midnight. Otherwise, mostly clear, with a low around 32. Calm wind.
Wednesday
Areas of fog between 9am and 10am. Otherwise, mostly sunny, with a high near 47. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 31. Calm wind.
Thursday
Partly sunny, with a high near 45. Calm wind.
Thursday Night
Mostly cloudy, with a low around 31. Calm wind.
Friday
Sunny, with a high near 45.
Friday Night
Mostly clear, with a low around 29.
Saturday
Sunny, with a high near 45.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
A slight chance of rain after 10am. Partly sunny, with a high near 44.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 36.
Monday
A chance of rain. Mostly cloudy, with a high near 46.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 38.
Tuesday
A slight chance of rain. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Mountlake Terrace WA
 47.78°N 122.31°W (Elev. 374 ft)
7:01 pm PST Jan 20, 2026
8pm PST Jan 20, 2026-6pm PST Jan 27, 2026
 
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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