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

Severe Weather for Northeast Southeastward into the Southern Plains; Flooding in the Upper Great Lakes

Severe thunderstorms are expected from the Northeast to Texas through the night and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains and the mid-Atlantic. There is late-season snow over the Northern/Central Rockies and the Northern Plains. Read More >

Hazardous Weather Conditions

Current conditions at

CHEHALIS (CLSW1)

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

NA

36°F

2°C

Humidity 97%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 17 Apr 03:09 AM PDT
Extended Forecast for

3 Miles N Napavine WA

Frost Advisory until April 17, 09:00am
Click here for hazard details and duration
Frost Advisory
  •  
    Frost Advisory until April 17, 09:00am

    NOW until 9:00am Fri

    Frost Advisory

  • Overnight

    Low: 34 °F

    Patchy Frost

  • Friday

    Friday: Areas of frost before 8am. Otherwise, partly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Areas Frost
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 69. Calm wind.

    High: 69 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 47. Light and variable wind.

    Low: 47 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 20 percent chance of rain before 11am. Mostly cloudy, with a high near 72.

    High: 72 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of rain after 11am. Partly sunny, with a high near 73.

    High: 73 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
Patchy frost. Otherwise, mostly cloudy, with a low around 34. Calm wind.
Friday
Areas of frost before 8am. Otherwise, partly sunny, with a high near 58. Calm wind.
Friday Night
Mostly cloudy, with a low around 37. Calm wind.
Saturday
Partly sunny, with a high near 69. Calm wind.
Saturday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 47. Light and variable wind.
Sunday
A 20 percent chance of rain before 11am. Mostly cloudy, with a high near 72.
Sunday Night
Mostly cloudy, with a low around 47.
Monday
A slight chance of rain after 11am. Partly sunny, with a high near 73.
Monday Night
A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 46.
Tuesday
A chance of rain. Mostly cloudy, with a high near 63.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 45.
Wednesday
A chance of rain. Mostly cloudy, with a high near 59.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 41.
Thursday
Partly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Napavine WA
 46.62°N 122.91°W (Elev. 400 ft)
Last Update:
1:31 am PDT Apr 17, 2026
Forecast Valid:
3am PDT Apr 17, 2026-6pm PDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation