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 02:09 AM PST
Extended Forecast for

2 Miles ENE Napavine WA

  • Overnight

    Overnight: Patchy fog before 5am.  Otherwise, partly cloudy, with a steady temperature around 32. Calm wind.

    Low: 32 °F

    Patchy Fog

  • M.L.King Day

    M.L.King Day: Patchy dense fog before 9am.  Otherwise, sunny, with a high near 49. Calm wind.

    High: 49 °F

    Patchy Dense
    Fog then
    Sunny

  • Monday Night

    Monday Night: Patchy dense fog before midnight.  Otherwise, partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Tuesday

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

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog.  Otherwise, partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Patchy Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog between midnight and 1am.  Otherwise, mostly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog between 7am and 8am.  Otherwise, partly sunny, with a high near 45.

    High: 45 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog.  Otherwise, partly cloudy, with a low around 32.

    Low: 32 °F

    Patchy Fog

Detailed Forecast

Overnight
Patchy fog before 5am. Otherwise, partly cloudy, with a steady temperature around 32. Calm wind.
M.L.King Day
Patchy dense fog before 9am. Otherwise, sunny, with a high near 49. Calm wind.
Monday Night
Patchy dense fog before midnight. Otherwise, partly cloudy, with a low around 29. Calm wind.
Tuesday
Mostly sunny, with a high near 48. Calm wind.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 29. Calm wind.
Wednesday
Mostly sunny, with a high near 46.
Wednesday Night
Patchy fog between midnight and 1am. Otherwise, mostly cloudy, with a low around 30.
Thursday
Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 45.
Thursday Night
Patchy fog. Otherwise, partly cloudy, with a low around 32.
Friday
A slight chance of rain after 4pm. Patchy fog before 11am. Otherwise, partly sunny, with a high near 45.
Friday Night
A chance of rain. Patchy fog. Otherwise, partly cloudy, with a low around 32.
Saturday
A chance of rain and snow. Patchy fog. Otherwise, partly sunny, with a high near 46.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 34.
Sunday
A chance of rain. Mostly cloudy, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Napavine WA
 46.59°N 122.86°W (Elev. 400 ft)
1:25 am PST Jan 19, 2026
2am PST Jan 19, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

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