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

66°F

19°C

Humidity 92%
Wind Speed N 3 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 64°F (18°C)
Visibility NA
Last update 15 Aug 02:30 PM PDT
Extended Forecast for

Onalaska WA

  • This Afternoon

    This Afternoon: Rain, mainly after 3pm. High near 68. South wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 68 °F

    Rain

  • Tonight

    Tonight: Rain before 4am, then a chance of rain after 5am. Low around 55. South wind 5 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 55 °F

    Rain

  • Saturday

    Saturday: A 40 percent chance of rain after 1pm. Partly sunny, with a high near 73. Calm wind becoming south southwest around 5 mph in the morning.

    High: 73 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly before 11pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 51. Light and variable wind.

    Low: 51 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 73. Calm wind.

    High: 73 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 74.

    High: 74 °F

    Areas Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain, mainly after 3pm. High near 68. South wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain before 4am, then a chance of rain after 5am. Low around 55. South wind 5 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Saturday
A 40 percent chance of rain after 1pm. Partly sunny, with a high near 73. Calm wind becoming south southwest around 5 mph in the morning.
Saturday Night
A 30 percent chance of rain, mainly before 11pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 51. Light and variable wind.
Sunday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 73. Calm wind.
Sunday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 50.
Monday
Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 74.
Monday Night
Mostly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Onalaska WA
 46.58°N 122.74°W (Elev. 600 ft)
Last Update:
2:25 pm PDT Aug 15, 2025
Forecast Valid:
2pm PDT Aug 15, 2025-6pm PDT Aug 21, 2025
 
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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