Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

CHEHALIS (CLSW1)

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

NA

36°F

2°C

Humidity 94%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 18 Jan 07:09 PM PST
Extended Forecast for

4 Miles SW Winlock WA

  • Tonight

    Tonight: Mostly clear, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 49. Calm wind.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Patchy fog between midnight and 1am.  Otherwise, mostly clear, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48. Calm wind.

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Wednesday Night

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

    Low: 31 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain after 10am.  Mostly cloudy, with a high near 44.

    High: 44 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain.  Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 29. Calm wind.
M.L.King Day
Sunny, with a high near 49. Calm wind.
Monday Night
Patchy fog between midnight and 1am. Otherwise, mostly clear, with a low around 32. Calm wind.
Tuesday
Mostly sunny, with a high near 48. Calm wind.
Tuesday Night
Partly cloudy, with a low around 29. Calm wind.
Wednesday
Partly sunny, with a high near 46.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
A slight chance of rain after 10am. Mostly cloudy, with a high near 44.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 35.
Friday
A chance of rain. Mostly cloudy, with a high near 44.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 35.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 44.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 35.
Sunday
Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Winlock WA
 46.46°N 123.01°W (Elev. 571 ft)
7:01 pm PST Jan 18, 2026
7pm PST Jan 18, 2026-6pm PST Jan 25, 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