Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

DW8787 CHEHALIS (D8787)

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

NA

67°F

19°C

Humidity 81%
Wind Speed WSW 0 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 61°F (16°C)
Visibility NA
Last update 19 Aug 09:15 PM PDT
Extended Forecast for

3 Miles S Onalaska WA

  • Tonight

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

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy through mid morning, then gradual clearing, with a high near 85. Calm wind.

    High: 85 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 55. Calm wind.

    Low: 55 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a high near 83. Calm wind.

    High: 83 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of showers after 11pm.  Mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 11am.  Mostly cloudy, with a high near 70.

    High: 70 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 74.

    High: 74 °F

    Cloudy

  • Sunday Night

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

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 52. Calm wind.
Thursday
Mostly cloudy through mid morning, then gradual clearing, with a high near 85. Calm wind.
Thursday Night
Increasing clouds, with a low around 55. Calm wind.
Friday
Mostly cloudy, with a high near 83. Calm wind.
Friday Night
A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 54. Calm wind.
Saturday
A 30 percent chance of showers, mainly before 11am. Mostly cloudy, with a high near 70.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Cloudy, with a high near 74.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Partly sunny, with a high near 78.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 50.
Wednesday
Partly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Onalaska WA
 46.54°N 122.72°W (Elev. 528 ft)
11:26 am PDT Aug 19, 2026
9pm PDT Aug 19, 2026-6pm PDT Aug 26, 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