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

Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Chehalis-Centralia Airport (KCLS)

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

Clear

48°F

9°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 21 May 01:35 AM PDT
Extended Forecast for

Chehalis WA

  • Overnight

    Overnight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 7am. Otherwise, sunny, with a high near 80. Calm wind becoming north around 5 mph in the morning.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 48. North northwest wind around 6 mph becoming calm in the evening.

    Low: 48 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 48. West northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 48 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 74.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain after 11pm. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

Detailed Forecast

Overnight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 46. Calm wind.
Thursday
Patchy fog before 7am. Otherwise, sunny, with a high near 80. Calm wind becoming north around 5 mph in the morning.
Thursday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 48. North northwest wind around 6 mph becoming calm in the evening.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.
Friday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 48. West northwest wind 5 to 8 mph becoming calm in the evening.
Saturday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Partly sunny, with a high near 69.
Sunday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 45.
Memorial Day
Rain. Mostly cloudy, with a high near 58.
Monday Night
A chance of rain. Mostly cloudy, with a low around 42.
Tuesday
A chance of rain. Partly sunny, with a high near 67.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 72.
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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:
11:26 pm PDT May 20, 2026
Forecast Valid:
1am PDT May 21, 2026-6pm PDT May 27, 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