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

Strong Storms and Heavy Rainfall Threats; Dangerous Heat for Southern Plains into the Southwest

Thunderstorms, some severe, will impact areas of the Plains into the Midwest today. Rainfall can be locally heavy as well from these storms with isolated instances of flash flooding. Monsoonal flow will enhance rainfall across the Four Corners into the central Rockies today. Meanwhile, summer heat continues for the southern Plains, Southwest into southern California. Read More >

Current conditions at

CHEHALIS (CLSW1)

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

NA

55°F

13°C

Humidity 93%
Wind Speed ESE 0 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Last update 25 Aug 05:09 AM PDT
Extended Forecast for

6 Miles SW Onalaska WA

  • Today

    Today: Sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, increasing clouds, with a low around 51. Northwest wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 79. Calm wind.

    High: 79 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 73. Light and variable wind.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain, mainly after 11am. Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 86. Light and variable wind.
Tonight
Patchy fog after midnight. Otherwise, increasing clouds, with a low around 51. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 79. Calm wind.
Wednesday Night
Partly cloudy, with a low around 52. Calm wind.
Thursday
Partly sunny, with a high near 73. Light and variable wind.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Partly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 48.
Saturday
A chance of rain, mainly after 11am. Mostly cloudy, with a high near 69.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Partly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 48.
Monday
A chance of rain. Partly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Onalaska WA
 46.53°N 122.81°W (Elev. 417 ft)
Last Update:
11:26 pm PDT Aug 24, 2026
Forecast Valid:
5am PDT Aug 25, 2026-6pm PDT Aug 31, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation