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Heavy Rainfall and Severe Thunderstorms in the Midwest and Southwest; Heat Continues in the Southern U.S.

Heavy to excessive rainfall could bring flooding today through Thursday across parts of the central Plains into the Midwest and southern Arizona and New Mexico. Scattered strong to severe thunderstorms may impact parts of eastern Nebraska into western Iowa later today into early evening. Heat Advisories remain in place across much of east Texas into the mid-Mississippi Valley today and Tuesday. Read More >

Current conditions at

CHEHALIS (CLSW1)

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

NA

67°F

19°C

Humidity 55%
Wind Speed SW 1 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 14 Sep 04:09 PM PDT
Extended Forecast for

6 Miles SE Napavine WA

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 65. Calm wind.

    High: 65 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 46. Light north wind.

    Low: 46 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, sunny, with a high near 76. Calm wind becoming north around 6 mph in the afternoon.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 49. North wind around 6 mph becoming calm in the evening.

    Low: 49 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 47. Calm wind.
Tuesday
Areas of fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 65. Calm wind.
Tuesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 46. Light north wind.
Wednesday
Patchy fog before 9am. Otherwise, sunny, with a high near 76. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 49. North wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 50.
Friday
Mostly sunny, with a high near 75.
Friday Night
Mostly clear, with a low around 49.
Saturday
Partly sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 49.
Monday
A slight chance of rain. Partly sunny, with a high near 70.
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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 Sep 14, 2026
Forecast Valid:
5pm PDT Sep 14, 2026-6pm PDT Sep 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation