Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Current conditions at

DW8787 CHEHALIS (D8787)

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

NA

58°F

14°C

Humidity 91%
Wind Speed WNW 0 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 55°F (13°C)
Visibility NA
Last update 26 Jul 10:45 PM PDT
Extended Forecast for

Onalaska WA

  • Tonight

    Tonight: Patchy fog after midnight.  Otherwise, mostly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 8am.  Otherwise, sunny, with a high near 78. Light and variable wind.

    High: 78 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 2am.  Otherwise, partly cloudy, with a low around 52. Light and variable wind.

    Low: 52 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: A 30 percent chance of rain after 11am.  Areas of fog before 7am.  Otherwise, mostly cloudy, with a high near 72. Light and variable wind becoming south around 5 mph in the morning.

    High: 72 °F

    Chance Rain
    and Areas Fog

  • Tuesday Night

    Tuesday Night: Areas of fog after 1am.  Otherwise, partly cloudy, with a low around 49. West northwest wind around 5 mph becoming calm  in the evening.

    Low: 49 °F

    Partly Cloudy
    then Areas
    Fog

  • Wednesday

    Wednesday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 76.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Areas of fog before 8am.  Otherwise, sunny, with a high near 78.

    High: 78 °F

    Areas Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 51. Calm wind.
Monday
Areas of fog before 8am. Otherwise, sunny, with a high near 78. Light and variable wind.
Monday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 52. Light and variable wind.
Tuesday
A 30 percent chance of rain after 11am. Areas of fog before 7am. Otherwise, mostly cloudy, with a high near 72. Light and variable wind becoming south around 5 mph in the morning.
Tuesday Night
Areas of fog after 1am. Otherwise, partly cloudy, with a low around 49. West northwest wind around 5 mph becoming calm in the evening.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 76.
Wednesday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 48.
Thursday
Areas of fog before 8am. Otherwise, sunny, with a high near 78.
Thursday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 48.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 50.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Mostly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Onalaska WA
 46.58°N 122.74°W (Elev. 600 ft)
11:26 am PDT Jul 26, 2026
11pm PDT Jul 26, 2026-6pm PDT Aug 2, 2026
 
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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