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

DW8787 CHEHALIS (D8787)

Lat: 46.64646°NLon: 122.8388°WElev: 564.0ft.

NA

29°F

-2°C

Humidity 100%
Wind Speed ENE 0 MPH
Barometer 30.24 in (1024.04 mb)
Dewpoint 29°F (-2°C)
Visibility NA
Last update 19 Jan 09:45 PM PST
Extended Forecast for

3 Miles S Onalaska WA

  • Tonight

    Tonight: Partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy

  • Tuesday

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

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog before 9pm.  Otherwise, partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Patchy Fog
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 46. Calm wind.

    High: 46 °F

    Sunny

  • Wednesday Night

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

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 9pm.  Otherwise, partly cloudy, with a low around 30.

    Low: 30 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 46.

    High: 46 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: A slight chance of snow after 4am.  Patchy fog before 3am, then patchy fog after 5am.  Otherwise, partly cloudy, with a low around 30.

    Low: 30 °F

    Patchy Fog
    then Slight
    Chance Snow
    and Patchy
    Fog

Detailed Forecast

Tonight
Partly cloudy, with a low around 27. Calm wind.
Tuesday
Mostly sunny, with a high near 48. Calm wind.
Tuesday Night
Patchy fog before 9pm. Otherwise, partly cloudy, with a low around 28. Calm wind.
Wednesday
Sunny, with a high near 46. Calm wind.
Wednesday Night
Partly cloudy, with a low around 29. Calm wind.
Thursday
Partly sunny, with a high near 45.
Thursday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 30.
Friday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 46.
Friday Night
A slight chance of snow after 4am. Patchy fog before 3am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 30.
Saturday
A slight chance of rain and snow before 10am, then a slight chance of rain. Patchy fog between 7am and 8am. Otherwise, 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:
3 Miles S Onalaska WA
 46.54°N 122.72°W (Elev. 528 ft)
7:00 pm PST Jan 19, 2026
10pm 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