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

CHEHALIS (CLSW1)

Lat: 46.61°NLon: 122.90833°WElev: 262.0ft.

NA

52°F

11°C

Humidity 100%
Wind Speed E 1 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 16 Nov 04:09 AM PST
Extended Forecast for

5 Miles SSW Onalaska WA

  • Overnight

    Overnight: A 20 percent chance of rain. Areas of fog. Otherwise, mostly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Slight Chance
    Rain and
    Areas Fog

  • Sunday

    Sunday: Rain, mainly between noon and 5pm. Areas of fog before 1pm. High near 54. Light south southeast wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Chance Rain
    and Areas Fog
    then Rain and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain before 10pm, then showers likely after 10pm. Low around 43. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Rain

  • Monday

    Monday: Showers likely, mainly before 10am. Mostly cloudy, with a high near 51. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers, mainly before 4pm. Mostly cloudy, with a high near 51.

    High: 51 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 10pm. Areas of fog. Otherwise, mostly cloudy, with a low around 35.

    Low: 35 °F

    Slight Chance
    Showers and
    Areas Fog
    then Patchy
    Fog

  • Wednesday

    Wednesday: A chance of rain, mainly after 4pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 53.

    High: 53 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 10pm. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Rain Likely

Detailed Forecast

Overnight
A 20 percent chance of rain. Areas of fog. Otherwise, mostly cloudy, with a low around 46. Calm wind.
Sunday
Rain, mainly between noon and 5pm. Areas of fog before 1pm. High near 54. Light south southeast wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain before 10pm, then showers likely after 10pm. Low around 43. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers likely, mainly before 10am. Mostly cloudy, with a high near 51. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 38. Calm wind.
Tuesday
A 50 percent chance of showers, mainly before 4pm. Mostly cloudy, with a high near 51.
Tuesday Night
A 20 percent chance of showers before 10pm. Areas of fog. Otherwise, mostly cloudy, with a low around 35.
Wednesday
A chance of rain, mainly after 4pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 53.
Wednesday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 38.
Thursday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 52.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 39.
Friday
A chance of rain. Mostly cloudy, with a high near 52.
Friday Night
Rain likely. Mostly cloudy, with a low around 41.
Saturday
Rain likely. Mostly cloudy, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Onalaska WA
 46.5°N 122.74°W (Elev. 305 ft)
Last Update:
1:25 am PST Nov 16, 2025
Forecast Valid:
4am PST Nov 16, 2025-6pm PST Nov 22, 2025
 
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Additional Resources

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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