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

Hazardous Weather Conditions

Current conditions at

CHEHALIS (CLSW1)

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

NA

27°F

-3°C

Humidity 100%
Wind Speed N 0 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Last update 31 Dec 06:09 AM PST
Extended Forecast for

Winlock WA

Dense Fog Advisory until December 31, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until December 31, 10:00am

    NOW until 10:00am Wed

    Dense Fog Advisory

  • Today

    High: 45 °F

    Frost then
    Mostly Sunny

  • Tonight

    Tonight: Patchy dense fog before 9pm. Otherwise, increasing clouds, with a low around 31. Southeast wind 3 to 6 mph.

    Low: 31 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • New Year's Day

    New Year's Day: Rain likely, mainly after 4pm. Cloudy, with a high near 42. South southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 42 °F

    Chance Rain
    then Rain
    Likely

  • Thursday Night

    Thursday Night: Rain. Low around 38. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain

  • Friday

    Friday: Rain. High near 51. South southeast wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Rain

  • Friday Night

    Friday Night: Rain. Low around 42. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Rain

  • Saturday

    Saturday: Rain. High near 50. Chance of precipitation is 90%.

    High: 50 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Cloudy, with a low around 41.

    Low: 41 °F

    Rain

Detailed Forecast

Today
Widespread frost before 11am. Otherwise, mostly sunny, with a high near 45. Light southeast wind.
Tonight
Patchy dense fog before 9pm. Otherwise, increasing clouds, with a low around 31. Southeast wind 3 to 6 mph.
New Year's Day
Rain likely, mainly after 4pm. Cloudy, with a high near 42. South southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain. Low around 38. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 51. South southeast wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain. Low around 42. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain. High near 50. Chance of precipitation is 90%.
Saturday Night
Rain. Cloudy, with a low around 41.
Sunday
Rain. Mostly cloudy, with a high near 48.
Sunday Night
Rain likely. Mostly cloudy, with a low around 39.
Monday
A chance of rain. Mostly cloudy, with a high near 47.
Monday Night
A chance of rain. Mostly cloudy, with a low around 36.
Tuesday
A chance of rain. Mostly cloudy, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winlock WA
 46.49°N 122.93°W (Elev. 400 ft)
Last Update:
1:25 am PST Dec 31, 2025
Forecast Valid:
6am PST Dec 31, 2025-6pm PST Jan 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation