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

Hazardous Weather Conditions

Current conditions at

DW8787 CHEHALIS (D8787)

Lat: 46.64646°NLon: 122.8388°WElev: 564.0ft.

NA

29°F

-2°C

Humidity 100%
Wind Speed WNW 0 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 29°F (-2°C)
Visibility NA
Last update 31 Dec 10:00 PM PST
Extended Forecast for

4 Miles SSW Onalaska WA

Dense Fog Advisory December 31, 10:18pm until January 1, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 31, 10:18pm until January 1, 10:00am

    NOW until 10:00am Thu

    Dense Fog Advisory

  • Tonight

    Low: 32 °F

    Areas Frost
    and Patchy
    Dense Fog
    then Mostly
    Cloudy

  • New Year's Day

    New Year's Day: A 50 percent chance of rain, mainly after 1pm. Patchy dense fog between 10am and 1pm. Otherwise, cloudy, with a high near 43. Calm wind.

    High: 43 °F

    Chance Rain
    and Patchy
    Dense Fog

  • Thursday Night

    Thursday Night: Rain. Low around 39. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain

  • Friday

    Friday: Rain. High near 51. Light south wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain

  • Friday Night

    Friday Night: Rain. Low around 43. Light east southeast wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Rain

  • Saturday

    Saturday: Rain. High near 52. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 41. Chance of precipitation is 90%.

    Low: 41 °F

    Rain

  • Sunday

    Sunday: Rain. Mostly cloudy, with a high near 48.

    High: 48 °F

    Rain

Detailed Forecast

Tonight
Patchy dense fog before 11pm. Areas of frost before 11pm. Otherwise, mostly cloudy, with a low around 32. Calm wind.
New Year's Day
A 50 percent chance of rain, mainly after 1pm. Patchy dense fog between 10am and 1pm. Otherwise, cloudy, with a high near 43. Calm wind.
Thursday Night
Rain. Low around 39. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 51. Light south wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain. Low around 43. Light east southeast wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain. High near 52. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain. Low around 41. Chance of precipitation is 90%.
Sunday
Rain. Mostly cloudy, with a high near 48.
Sunday Night
Rain likely. Mostly cloudy, with a low around 40.
Monday
Rain likely. Mostly cloudy, with a high near 47.
Monday Night
A chance of rain. Mostly cloudy, with a low around 37.
Tuesday
A chance of rain. Mostly cloudy, with a high near 46.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 36.
Wednesday
Rain likely. Mostly cloudy, with a high near 45.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Onalaska WA
 46.54°N 122.75°W (Elev. 535 ft)
Last Update:
7:01 pm PST Dec 31, 2025
Forecast Valid:
10pm PST Dec 31, 2025-6pm PST Jan 7, 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