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

Dangerous Heat and Possible Flooding This Week

Hot temperatures and high humidity are forecast to continue across much of east Texas into the mid-Mississippi Valley through this week. Heavy to excessive rainfall occurring at times through Friday could bring areas of flooding across parts of the central Plains into the upper Midwest and Four Corners states. Read More >

Current conditions at

Chehalis-Centralia Airport (KCLS)

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

Mostly Cloudy

57°F

14°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 15 Sep 10:35 AM PDT
Extended Forecast for

Chehalis WA

  • Today

    Today: Partly sunny, with a high near 66. Calm wind becoming north around 5 mph in the afternoon.

    High: 66 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, mostly clear, with a low around 47. Calm wind becoming north around 6 mph.

    Low: 47 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Areas of fog before 9am. Otherwise, sunny, with a high near 76. Calm wind becoming north 5 to 8 mph in the afternoon.

    High: 76 °F

    Areas Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 48. North wind around 6 mph becoming calm after midnight.

    Low: 48 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 79. Calm wind.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 66. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Patchy fog after midnight. Otherwise, mostly clear, with a low around 47. Calm wind becoming north around 6 mph.
Wednesday
Areas of fog before 9am. Otherwise, sunny, with a high near 76. Calm wind becoming north 5 to 8 mph in the afternoon.
Wednesday Night
Clear, with a low around 48. North wind around 6 mph becoming calm after midnight.
Thursday
Sunny, with a high near 79. Calm wind.
Thursday Night
Mostly clear, with a low around 48.
Friday
Mostly sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 48.
Saturday
Partly sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 49.
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:
Chehalis WA
 46.66°N 122.95°W (Elev. 420 ft)
Last Update:
11:26 pm PDT Sep 14, 2026
Forecast Valid:
10am PDT Sep 15, 2026-6pm PDT Sep 21, 2026
 
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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