National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

DW8787 CHEHALIS (D8787)

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

NA

28°F

-2°C

Humidity 100%
Wind Speed NNW 0 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 28°F (-2°C)
Visibility NA
Last update 30 Dec 05:15 AM PST
Extended Forecast for

4 Miles SSE Onalaska WA

  • Today

    Today: Patchy dense fog before 11am, then patchy dense fog after 5pm. Otherwise, mostly sunny, with a high near 43. Calm wind.

    High: 43 °F

    Patchy Dense
    Fog

  • Tonight

    Tonight: Patchy fog between 11pm and 1am. Otherwise, partly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Patchy Fog

  • Wednesday

    Wednesday: Partly sunny, with a high near 46. Calm wind.

    High: 46 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 10 percent chance of rain after 4am. Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Patchy Fog
    then Slight
    Chance Rain
    and Patchy
    Fog

  • New Year's Day

    New Year's Day: A 40 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 45. Calm wind.

    High: 45 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely. Patchy fog before 7pm. Otherwise, cloudy, with a low around 38. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain Likely
    and Patchy
    Fog

  • Friday

    Friday: Rain. High near 49. Chance of precipitation is 80%.

    High: 49 °F

    Rain

  • Friday Night

    Friday Night: Rain. Cloudy, with a low around 39.

    Low: 39 °F

    Rain

  • Saturday

    Saturday: Rain. Mostly cloudy, with a high near 46.

    High: 46 °F

    Rain

Detailed Forecast

Today
Patchy dense fog before 11am, then patchy dense fog after 5pm. Otherwise, mostly sunny, with a high near 43. Calm wind.
Tonight
Patchy fog between 11pm and 1am. Otherwise, partly cloudy, with a low around 32. Calm wind.
Wednesday
Partly sunny, with a high near 46. Calm wind.
Wednesday Night
A 10 percent chance of rain after 4am. Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 34. Calm wind.
New Year's Day
A 40 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 45. Calm wind.
Thursday Night
Rain likely. Patchy fog before 7pm. Otherwise, cloudy, with a low around 38. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 49. Chance of precipitation is 80%.
Friday Night
Rain. Cloudy, with a low around 39.
Saturday
Rain. Mostly cloudy, with a high near 46.
Saturday Night
Rain likely. Mostly cloudy, with a low around 38.
Sunday
Rain likely. Mostly cloudy, with a high near 47.
Sunday Night
Rain likely. Mostly cloudy, with a low around 38.
Monday
Rain likely. Mostly cloudy, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Onalaska WA
 46.52°N 122.69°W (Elev. 413 ft)
Last Update:
3:07 am PST Dec 30, 2025
Forecast Valid:
5am PST Dec 30, 2025-6pm PST Jan 5, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation