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.

Mostly Cloudy

70°F

21°C

Humidity 49%
Wind Speed WNW 4 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 28 Aug 04:15 PM PDT
Extended Forecast for

Chehalis WASimilar City Names

  • Tonight

    Tonight: A 30 percent chance of rain after 5am. Increasing clouds, with a low around 50. West northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear
    then Chance
    Rain

  • Saturday

    Saturday: A 30 percent chance of rain between noon and 2pm. Partly sunny, with a high near 69. Calm wind becoming west 5 to 8 mph in the morning.

    High: 69 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Patchy fog between midnight and 2am. Otherwise, increasing clouds, with a low around 49. West wind 5 to 7 mph becoming calm in the evening.

    Low: 49 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 72. Calm wind.

    High: 72 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 50. Light north wind.

    Low: 50 °F

    Partly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 77.

    High: 77 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

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

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain after 11am. Mostly cloudy, with a high near 73.

    High: 73 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: A chance of rain. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance Rain

Detailed Forecast

Tonight
A 30 percent chance of rain after 5am. Increasing clouds, with a low around 50. West northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
A 30 percent chance of rain between noon and 2pm. Partly sunny, with a high near 69. Calm wind becoming west 5 to 8 mph in the morning.
Saturday Night
Patchy fog between midnight and 2am. Otherwise, increasing clouds, with a low around 49. West wind 5 to 7 mph becoming calm in the evening.
Sunday
Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 72. Calm wind.
Sunday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 50. Light north wind.
Monday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
A slight chance of rain after 11am. Mostly cloudy, with a high near 73.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 52.
Wednesday
Rain. Cloudy, with a high near 64.
Wednesday Night
Rain. Mostly cloudy, with a low around 50.
Thursday
Rain likely. Mostly cloudy, with a high near 68.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 49.
Friday
A chance of rain. Partly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chehalis WASimilar City Names
 46.66°N 122.95°W (Elev. 420 ft)
Last Update:
12:35 pm PDT Aug 28, 2026
Forecast Valid:
4pm PDT Aug 28, 2026-6pm PDT Sep 4, 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