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Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley Thursday afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Hazardous Weather Conditions

Current conditions at

CHEHALIS (CLSW1)

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

NA

67°F

19°C

Humidity 24%
Wind Speed NNW 3 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Last update 08 Apr 05:09 PM PDT
Extended Forecast for

6 Miles SE Napavine WA

Frost Advisory April 8, 11:00pm until April 9, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Areas of frost after 3am. Otherwise, mostly clear, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Clear
    then Areas
    Frost

  • Thursday

    Thursday: Areas of frost before 8am. Otherwise, sunny, with a high near 67. Light north wind.

    High: 67 °F

    Areas Frost
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42. North wind around 5 mph becoming calm after midnight.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 69. Light and variable wind.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Rain likely, mainly after 11pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 45. Light west southwest wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Rain Likely
    and Patchy
    Fog

  • Saturday

    Saturday: Rain likely, then showers and possibly a thunderstorm after 11am. Patchy fog before noon. High near 56. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 56 °F

    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.

    Low: 42 °F

    Rain Likely

  • Sunday

    Sunday: Rain likely. Mostly cloudy, with a high near 50.

    High: 50 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

Detailed Forecast

Tonight
Areas of frost after 3am. Otherwise, mostly clear, with a low around 35. Calm wind.
Thursday
Areas of frost before 8am. Otherwise, sunny, with a high near 67. Light north wind.
Thursday Night
Mostly clear, with a low around 42. North wind around 5 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 69. Light and variable wind.
Friday Night
Rain likely, mainly after 11pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 45. Light west southwest wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain likely, then showers and possibly a thunderstorm after 11am. Patchy fog before noon. High near 56. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Sunday
Rain likely. Mostly cloudy, with a high near 50.
Sunday Night
A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 41.
Monday
A chance of rain. Mostly cloudy, with a high near 53.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
A chance of rain. Mostly cloudy, with a high near 54.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 40.
Wednesday
A chance of rain. Mostly cloudy, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Napavine WA
 46.53°N 122.81°W (Elev. 417 ft)
Last Update:
11:26 am PDT Apr 8, 2026
Forecast Valid:
6pm PDT Apr 8, 2026-6pm PDT Apr 15, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation