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

38°F

3°C

Humidity 99%
Wind Speed ENE 0 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 38°F (3°C)
Visibility NA
Last update 20 Nov 10:30 PM PST
Extended Forecast for

Onalaska WA

  • Tonight

    Tonight: Partly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Partly Cloudy

  • Friday

    Friday: A 10 percent chance of rain after 4pm. Mostly sunny, with a high near 51. Calm wind.

    High: 51 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of rain. Partly sunny, with a high near 53. Calm wind.

    High: 53 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 42. Light south wind.

    Low: 42 °F

    Chance Rain

  • Sunday

    Sunday: Rain. High near 49. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Rain

  • Sunday Night

    Sunday Night: Rain likely before 8pm, then showers likely after 8pm. Mostly cloudy, with a low around 36. Chance of precipitation is 70%.

    Low: 36 °F

    Rain Likely

  • Monday

    Monday: Showers likely, mainly before 10am. Mostly cloudy, with a high near 47.

    High: 47 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A slight chance of showers before 10pm, then a slight chance of rain after 4am. Patchy fog before 10pm, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Showers and
    Patchy Fog

Detailed Forecast

Tonight
Partly cloudy, with a low around 35. Calm wind.
Friday
A 10 percent chance of rain after 4pm. Mostly sunny, with a high near 51. Calm wind.
Friday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 40. Calm wind.
Saturday
A 20 percent chance of rain. Partly sunny, with a high near 53. Calm wind.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 42. Light south wind.
Sunday
Rain. High near 49. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain likely before 8pm, then showers likely after 8pm. Mostly cloudy, with a low around 36. Chance of precipitation is 70%.
Monday
Showers likely, mainly before 10am. Mostly cloudy, with a high near 47.
Monday Night
A slight chance of showers before 10pm, then a slight chance of rain after 4am. Patchy fog before 10pm, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 34.
Tuesday
A chance of rain, mainly after 10am. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 46.
Tuesday Night
Rain likely. Cloudy, with a low around 37.
Wednesday
Rain likely. Cloudy, with a high near 49.
Wednesday Night
Rain likely. Cloudy, with a low around 41.
Thanksgiving Day
A chance of rain. Mostly cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Onalaska WA
 46.58°N 122.74°W (Elev. 600 ft)
Last Update:
7:01 pm PST Nov 20, 2025
Forecast Valid:
10pm PST Nov 20, 2025-6pm PST Nov 27, 2025
 
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