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Heat in the Central U.S.; Heavy Rain Possible for South Texas; Monitoring Erin Tropical Impacts

Hot temperatures are forecast over the Plains and into the lower Mississippi River Valley Friday where Heat Advisories have been issued. Heavy rain from a disturbance in the western Gulf could bring flooding to south Texas. Erin could bring tropical storm conditions and heavy rain to Puerto Rico and the USVI this weekend with dangerous surf and rip currents impacting the western Atlantic Basin. Read More >

Hazardous Weather Conditions

Current conditions at

DW8787 CHEHALIS (D8787)

Lat: 46.64646°NLon: 122.8388°WElev: 564.0ft.

NA

60°F

16°C

Humidity 98%
Wind Speed NE 0 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 59°F (15°C)
Visibility NA
Last update 15 Aug 03:00 AM PDT
Extended Forecast for

6 Miles ENE Onalaska WA

  • Overnight

    Overnight: Rain. Low around 56. South wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Rain

  • Friday

    Friday: Rain. High near 67. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 67 °F

    Rain

  • Friday Night

    Friday Night: Rain, mainly before 2am. Low around 55. South wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 55 °F

    Rain

  • Saturday

    Saturday: A 50 percent chance of showers. Partly sunny, with a high near 71. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 71 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 52. Light west wind.

    Low: 52 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 72.

    High: 72 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Monday Night

    Monday Night: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy
    then Patchy
    Fog

Detailed Forecast

Overnight
Rain. Low around 56. South wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain. High near 67. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain, mainly before 2am. Low around 55. South wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 71. Calm wind becoming west southwest around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers before 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 52. Light west wind.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 72.
Sunday Night
Mostly cloudy, with a low around 50.
Monday
Partly sunny, with a high near 72.
Monday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 50.
Tuesday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 75.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 50.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ENE Onalaska WA
 46.6°N 122.62°W (Elev. 997 ft)
Last Update:
2:25 am PDT Aug 15, 2025
Forecast Valid:
3am PDT Aug 15, 2025-6pm PDT Aug 21, 2025
 
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