Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

DW8787 CHEHALIS (D8787)

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

NA

60°F

16°C

Humidity 88%
Wind Speed ENE 1 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 56°F (13°C)
Visibility NA
Last update 27 Aug 09:45 AM PDT
Extended Forecast for

Onalaska WA

  • Today

    Today: Partly sunny, with a high near 70. South wind 5 to 7 mph becoming west in the afternoon.

    High: 70 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog after 11pm.  Otherwise, increasing clouds, with a low around 51. Calm wind.

    Low: 51 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 10am.  Otherwise, mostly cloudy, with a high near 70. Light and variable wind.

    High: 70 °F

    Areas Fog
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Increasing clouds, with a low around 48. West northwest wind around 5 mph becoming calm  in the evening.

    Low: 48 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 40 percent chance of rain after 11am.  Mostly cloudy, with a high near 67. Calm wind becoming west around 5 mph in the afternoon.

    High: 67 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 70.

    High: 70 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 70. South wind 5 to 7 mph becoming west in the afternoon.
Tonight
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 51. Calm wind.
Friday
Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 70. Light and variable wind.
Friday Night
Increasing clouds, with a low around 48. West northwest wind around 5 mph becoming calm in the evening.
Saturday
A 40 percent chance of rain after 11am. Mostly cloudy, with a high near 67. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly cloudy, with a high near 70.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 72.
Monday Night
A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 49.
Tuesday
A chance of rain. Mostly cloudy, with a high near 67.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 49.
Wednesday
Rain likely. Mostly cloudy, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Onalaska WA
 46.59°N 122.71°W (Elev. 600 ft)
11:26 pm PDT Aug 26, 2026
10am PDT Aug 27, 2026-6pm PDT Sep 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