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Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northwestern Gulf Coast from south central Louisiana to the upper Texas coast today. Read More >

Hazardous Weather Conditions

Current conditions at

DW8787 CHEHALIS (D8787)

Lat: 46.64646°NLon: 122.8388°WElev: 550.0ft.

NA

60°F

16°C

Humidity 98%
Wind Speed ENE 0 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 59°F (15°C)
Visibility NA
Last update 23 Jul 07:00 AM PDT
Extended Forecast for

3 Miles ESE Onalaska WA

Red Flag Warning July 23, 07:17am until July 23, 10:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning July 23, 07:17am until July 23, 10:00pm

    NOW until 10:00pm Thu

    Red Flag Warning

  • Today

    High: 81 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Partly
    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 53. West northwest wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, partly sunny, with a high near 74. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 74 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy
    then Patchy
    Fog

Detailed Forecast

Today
A 20 percent chance of rain before 8am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 81. Light and variable wind.
Tonight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 84. Light and variable wind.
Friday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 53. West northwest wind around 6 mph becoming calm in the evening.
Saturday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 74. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Saturday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 54.
Sunday
Partly sunny, with a high near 75.
Sunday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 52.
Monday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 76.
Monday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 50.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Onalaska WA
 46.55°N 122.66°W (Elev. 600 ft)
Last Update:
11:26 pm PDT Jul 22, 2026
Forecast Valid:
7am PDT Jul 23, 2026-6pm PDT Jul 29, 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