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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Chehalis-Centralia Airport (KCLS)

Lat: 46.677°NLon: 122.9827°WElev: 177.0ft.

Partly Cloudy

70°F

21°C

Humidity 60%
Wind Speed N 5 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 27 Aug 06:35 PM PDT
Extended Forecast for

Chehalis WA

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, increasing clouds, with a low around 53. West wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 73. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 73 °F

    Areas Fog
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 51. West northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: A 40 percent chance of rain. Partly sunny, with a high near 71. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 71 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Patchy fog before 2am, then patchy fog after 3am. Otherwise, partly cloudy, with a low around 49. West wind 5 to 8 mph becoming calm in the evening.

    Low: 49 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 72.

    High: 72 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, increasing clouds, with a low around 53. West wind around 5 mph becoming calm in the evening.
Friday
Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 73. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Friday Night
A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 51. West northwest wind 5 to 8 mph becoming calm in the evening.
Saturday
A 40 percent chance of rain. Partly sunny, with a high near 71. Calm wind becoming west 5 to 7 mph in the afternoon.
Saturday Night
Patchy fog before 2am, then patchy fog after 3am. Otherwise, partly cloudy, with a low around 49. West wind 5 to 8 mph becoming calm in the evening.
Sunday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 72.
Sunday Night
Partly cloudy, with a low around 49.
Monday
Partly sunny, with a high near 75.
Monday Night
Mostly cloudy, with a low around 52.
Tuesday
A chance of rain, mainly after 11am. Mostly cloudy, with a high near 72.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 52.
Wednesday
Rain likely. Mostly cloudy, with a high near 68.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 51.
Thursday
A chance of rain. Mostly cloudy, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chehalis WA
 46.66°N 122.98°W (Elev. 177 ft)
Last Update:
12:56 pm PDT Aug 27, 2026
Forecast Valid:
6pm PDT Aug 27, 2026-6pm PDT Sep 3, 2026
 
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Additional Resources

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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