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

31°F

-1°C

Humidity 100%
Wind Speed NE 0 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 19 Jan 11:09 PM PST
Extended Forecast for

2 Miles ENE Napavine WA

  • Tonight

    Tonight: Patchy fog before midnight. Areas of dense freezing fog after 4am.  Otherwise, mostly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Areas Dense
    Freezing Fog
    and Patchy
    Fog

  • Tuesday

    Tuesday: Areas of dense fog between 10am and 3pm. Areas of dense freezing fog before 10am.  Otherwise, mostly sunny, with a high near 47. Calm wind.

    High: 47 °F

    Areas Dense
    Freezing Fog
    and Areas
    Dense Fog

  • Tuesday Night

    Tuesday Night: Patchy fog between 7pm and 10pm. Areas of dense freezing fog after 10pm.  Otherwise, partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Areas Dense
    Freezing Fog
    and Patchy
    Fog

  • Wednesday

    Wednesday: Areas of dense fog between noon and 3pm. Areas of dense freezing fog before noon.  Otherwise, mostly sunny, with a high near 47. Calm wind.

    High: 47 °F

    Areas Dense
    Freezing Fog
    and Areas
    Dense Fog

  • Wednesday Night

    Wednesday Night: Areas of dense freezing fog after 10pm. Partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Areas Dense
    Freezing Fog

  • Thursday

    Thursday: Areas of dense freezing fog before 11am. Partly sunny, with a high near 45.

    High: 45 °F

    Areas Dense
    Freezing Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog.  Otherwise, mostly cloudy, with a low around 30.

    Low: 30 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 46.

    High: 46 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: A slight chance of snow after 4am.  Patchy fog.  Otherwise, partly cloudy, with a low around 30.

    Low: 30 °F

    Patchy Fog
    then Slight
    Chance Snow
    and Patchy
    Fog

Detailed Forecast

Tonight
Patchy fog before midnight. Areas of dense freezing fog after 4am. Otherwise, mostly cloudy, with a low around 27. Calm wind.
Tuesday
Areas of dense fog between 10am and 3pm. Areas of dense freezing fog before 10am. Otherwise, mostly sunny, with a high near 47. Calm wind.
Tuesday Night
Patchy fog between 7pm and 10pm. Areas of dense freezing fog after 10pm. Otherwise, partly cloudy, with a low around 28. Calm wind.
Wednesday
Areas of dense fog between noon and 3pm. Areas of dense freezing fog before noon. Otherwise, mostly sunny, with a high near 47. Calm wind.
Wednesday Night
Areas of dense freezing fog after 10pm. Partly cloudy, with a low around 29. Calm wind.
Thursday
Areas of dense freezing fog before 11am. Partly sunny, with a high near 45.
Thursday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 30.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 46.
Friday Night
A slight chance of snow after 4am. Patchy fog. Otherwise, partly cloudy, with a low around 30.
Saturday
A slight chance of rain and snow before 10am, then a slight chance of rain. Partly sunny, with a high near 45.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 34.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 47.
Sunday Night
Rain likely. Mostly cloudy, with a low around 38.
Monday
A chance of rain. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Napavine WA
 46.59°N 122.86°W (Elev. 400 ft)
7:00 pm PST Jan 19, 2026
11pm PST Jan 19, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database