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

30°F

-1°C

Humidity 100%
Wind Speed E 0 MPH
Barometer 30.57 in (1035.22 mb)
Dewpoint 30°F (-1°C)
Visibility NA
Last update 29 Dec 01:00 AM PST
Extended Forecast for

4 Miles SSW Onalaska WA

  • Overnight

    Overnight: Widespread fog, mainly after 5am. Areas of freezing fog after 3am. Otherwise, mostly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Areas
    Freezing Fog
    and Fog

  • Monday

    Monday: Widespread dense fog before 3pm, then patchy dense fog after 4pm. Areas of dense freezing fog between 8am and 9am. Otherwise, mostly cloudy, with a high near 41. Calm wind.

    High: 41 °F

    Areas Dense
    Freezing Fog
    and Dense Fog

  • Monday Night

    Monday Night: Widespread fog, mainly between 8pm and 10pm. Otherwise, mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Fog

  • Tuesday

    Tuesday: Patchy fog before 10am, then patchy fog after 5pm. Otherwise, mostly sunny, with a high near 45. Calm wind.

    High: 45 °F

    Patchy Fog

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, partly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Patchy Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog between 7pm and 8pm. Otherwise, mostly cloudy, with a low around 33.

    Low: 33 °F

    Patchy Fog
    then Mostly
    Cloudy

  • New Year's Day

    New Year's Day: A chance of rain after 10am. Mostly cloudy, with a high near 46.

    High: 46 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 10pm. Cloudy, with a low around 39.

    Low: 39 °F

    Rain Likely

Detailed Forecast

Overnight
Widespread fog, mainly after 5am. Areas of freezing fog after 3am. Otherwise, mostly cloudy, with a low around 30. Calm wind.
Monday
Widespread dense fog before 3pm, then patchy dense fog after 4pm. Areas of dense freezing fog between 8am and 9am. Otherwise, mostly cloudy, with a high near 41. Calm wind.
Monday Night
Widespread fog, mainly between 8pm and 10pm. Otherwise, mostly cloudy, with a low around 31. Calm wind.
Tuesday
Patchy fog before 10am, then patchy fog after 5pm. Otherwise, mostly sunny, with a high near 45. Calm wind.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 32. Calm wind.
Wednesday
Mostly sunny, with a high near 47.
Wednesday Night
Patchy fog between 7pm and 8pm. Otherwise, mostly cloudy, with a low around 33.
New Year's Day
A chance of rain after 10am. Mostly cloudy, with a high near 46.
Thursday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 39.
Friday
Rain likely. Cloudy, with a high near 49.
Friday Night
Rain likely. Mostly cloudy, with a low around 36.
Saturday
Rain likely. Mostly cloudy, with a high near 45.
Saturday Night
Rain likely. Mostly cloudy, with a low around 37.
Sunday
Rain likely. Mostly cloudy, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Onalaska WA
 46.52°N 122.75°W (Elev. 423 ft)
Last Update:
1:25 am PST Dec 29, 2025
Forecast Valid:
1am PST Dec 29, 2025-6pm PST Jan 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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