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

62°F

17°C

Humidity 95%
Wind Speed NNW 0 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 61°F (16°C)
Visibility NA
Last update 31 Aug 11:30 AM PDT
Extended Forecast for

6 Miles SE Onalaska WA

  • Today

    Today: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 74. Calm wind.

    High: 74 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 53. Calm wind.

    Low: 53 °F

    Patchy Fog

  • Labor Day

    Labor Day: Areas of fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 78. Calm wind.

    High: 78 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after midnight. Otherwise, mostly clear, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 74. Calm wind.
Tonight
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 53. Calm wind.
Labor Day
Areas of fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 78. Calm wind.
Monday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 52. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 85. Calm wind.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Partly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Onalaska WA
 46.51°N 122.62°W (Elev. 400 ft)
Last Update:
8:25 am PDT Aug 31, 2025
Forecast Valid:
11am PDT Aug 31, 2025-6pm PDT Sep 6, 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