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

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

CHEHALIS (CLSW1)

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

NA

64°F

18°C

Humidity 90%
Wind Speed W 2 MPH
Barometer NA
Dewpoint 61°F (16°C)
Visibility NA
Last update 01 Aug 11:09 AM PDT
Extended Forecast for

3 Miles N Napavine WA

  • Today

    Today: A 40 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 71. West wind around 6 mph.

    High: 71 °F

    Chance Rain

  • Tonight

    Tonight: Increasing clouds, with a low around 51. West wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 74. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 74 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49. Northwest wind around 5 mph becoming calm in the evening.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81. Calm wind becoming north around 6 mph in the afternoon.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 71. West wind around 6 mph.
Tonight
Increasing clouds, with a low around 51. West wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 74. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 49. Northwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 81. Calm wind becoming north around 6 mph in the afternoon.
Monday Night
Clear, with a low around 56.
Tuesday
Sunny, with a high near 91.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Mostly sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 56.
Friday
Mostly sunny, with a high near 85.
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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:
11:26 am PDT Aug 1, 2026
Forecast Valid:
11am PDT Aug 1, 2026-6pm PDT Aug 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation