Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

CHEHALIS (CLSW1)

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

NA

74°F

23°C

Humidity 54%
Wind Speed WNW 6 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Last update 17 Aug 08:09 PM PDT
Extended Forecast for

Winlock WA

  • Tonight

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

    Low: 51 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am.  Otherwise, cloudy through mid morning, then gradual clearing, with a high near 80. Light and variable wind.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 51. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 51 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 79. Calm wind.

    High: 79 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of rain before 11am.  Mostly cloudy, with a high near 80.

    High: 80 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of rain.  Mostly cloudy, with a low around 53.

    Low: 53 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, increasing clouds, with a low around 51. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 80. Light and variable wind.
Tuesday Night
Increasing clouds, with a low around 51. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 79. Calm wind.
Wednesday Night
Partly cloudy, with a low around 51. Calm wind.
Thursday
Mostly sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 53.
Friday
A slight chance of rain before 11am. Mostly cloudy, with a high near 80.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 53.
Saturday
A slight chance of rain after 11am. Mostly cloudy, with a high near 72.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly cloudy, with a high near 77.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Partly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Winlock WA
 46.49°N 122.93°W (Elev. 400 ft)
11:26 am PDT Aug 17, 2026
9pm PDT Aug 17, 2026-6pm PDT Aug 24, 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