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

CHEHALIS (CLSW1)

Lat: 46.61°NLon: 122.90833°WElev: 262.0ft.

NA

34°F

1°C

Humidity 100%
Wind Speed E 1 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 20 Jan 09:09 PM PST
Extended Forecast for

4 Miles WNW Winlock WA

  • Tonight

    Tonight: Areas of fog between 1am and 2am.  Otherwise, mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Areas Fog

  • Wednesday

    Wednesday: Areas of freezing fog between 7am and 8am. Mostly sunny, with a high near 45. Calm wind.

    High: 45 °F

    Areas
    Freezing Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 43. Calm wind.

    High: 43 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
Areas of fog between 1am and 2am. Otherwise, mostly cloudy, with a low around 29. Calm wind.
Wednesday
Areas of freezing fog between 7am and 8am. Mostly sunny, with a high near 45. Calm wind.
Wednesday Night
Partly cloudy, with a low around 28. Calm wind.
Thursday
Mostly sunny, with a high near 43. Calm wind.
Thursday Night
Partly cloudy, with a low around 28. Calm wind.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
A slight chance of rain after 10am. Partly sunny, with a high near 42.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 33.
Monday
A chance of rain. Mostly cloudy, with a high near 45.
Monday Night
A chance of rain. Mostly cloudy, with a low around 36.
Tuesday
A slight chance of rain. Mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Winlock WA
 46.52°N 123.03°W (Elev. 912 ft)
7:01 pm PST Jan 20, 2026
9pm PST Jan 20, 2026-6pm PST Jan 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database