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

Hazardous Weather Conditions

Current conditions at

DW8787 CHEHALIS (D8787)

Lat: 46.64646°NLon: 122.8388°WElev: 550.0ft.

NA

38°F

3°C

Humidity 99%
Wind Speed E 0 MPH
Barometer 29.84 in (1010.5 mb)
Dewpoint 38°F (3°C)
Visibility NA
Last update 10 Oct 07:46 AM PDT
Extended Forecast for

Onalaska WA

Frost Advisory October 11, 12:00am until October 11, 08:00am
Frost Advisory October 12, 12:00am until October 12, 08:00am
Click here for hazard details and duration
Frost Advisory
Frost Advisory

  • Today

    Today: A slight chance of showers between 9am and 11am. Mostly cloudy, then gradually becoming sunny, with a high near 55. Calm wind. Chance of precipitation is 20%.

    High: 55 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 36. Calm wind becoming north around 5 mph.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 33. North wind around 6 mph becoming calm in the evening.

    Low: 33 °F

    Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 63. Calm wind.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain after 11pm. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain

  • Wednesday

    Wednesday: A slight chance of rain before 11am. Mostly cloudy, with a high near 63.

    High: 63 °F

    Slight Chance
    Rain then
    Partly Sunny

Detailed Forecast

Today
A slight chance of showers between 9am and 11am. Mostly cloudy, then gradually becoming sunny, with a high near 55. Calm wind. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 36. Calm wind becoming north around 5 mph.
Sunday
Sunny, with a high near 61. Calm wind becoming north 5 to 7 mph in the afternoon.
Sunday Night
Clear, with a low around 33. North wind around 6 mph becoming calm in the evening.
Columbus Day
Sunny, with a high near 63. Calm wind.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 43.
Wednesday
A slight chance of rain before 11am. Mostly cloudy, with a high near 63.
Wednesday Night
Mostly cloudy, with a low around 43.
Thursday
Partly sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 45.
Friday
Partly sunny, with a high near 68.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Onalaska WA
 46.58°N 122.74°W (Elev. 600 ft)
Last Update:
2:45 am PDT Oct 10, 2026
Forecast Valid:
8am PDT Oct 10, 2026-6pm PDT Oct 16, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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