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

47°F

8°C

Humidity 70%
Wind Speed S 2 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 38°F (3°C)
Visibility NA
Last update 21 Jan 03:30 PM PST
Extended Forecast for

Mountlake Terrace WA

  • Tonight

    Tonight: Partly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 42. Calm wind.

    High: 42 °F

    Mostly Cloudy

  • Thursday Night

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

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 44. Calm wind becoming north around 6 mph in the afternoon.

    High: 44 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29. Light north northeast wind.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of snow after 4am.  Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 31. Calm wind.
Thursday
Mostly cloudy, with a high near 42. Calm wind.
Thursday Night
Partly cloudy, with a low around 31. Calm wind.
Friday
Sunny, with a high near 44. Calm wind becoming north around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 29. Light north northeast wind.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 43.
Sunday Night
A slight chance of snow after 4am. Mostly cloudy, with a low around 31.
Monday
A slight chance of rain and snow before 10am, then a slight chance of rain between 10am and 4pm, then a slight chance of rain and snow after 4pm. Mostly cloudy, with a high near 45.
Monday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 34.
Tuesday
A slight chance of rain and snow. Mostly cloudy, with a high near 48.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 37.
Wednesday
A chance of rain. Mostly cloudy, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
Mountlake Terrace WA
 47.8°N 122.35°W (Elev. 400 ft)
1:25 pm PST Jan 21, 2026
3pm PST Jan 21, 2026-6pm PST Jan 28, 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