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Sinlaku Continues to Impact the Marianas; Severe Weather for the Central Plains and Northeast; Record Warmth for mid-Atlantic to Southeast

Sinlaku continues to affect the Marianas as it moves north through Friday. Meanwhile, severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley today and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains. Read More >

Current conditions at

DW8787 CHEHALIS (D8787)

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

NA

43°F

6°C

Humidity 88%
Wind Speed E 0 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 40°F (4°C)
Visibility NA
Last update 16 Apr 10:15 AM PDT
Extended Forecast for

4 Miles SSW Onalaska WA

  • Today

    Today: Mostly sunny, with a high near 55. Calm wind becoming west around 6 mph in the afternoon.

    High: 55 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy frost after 1am. Otherwise, increasing clouds, with a low around 33. West wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Mostly Clear
    then Patchy
    Frost

  • Friday

    Friday: Partly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 66. Calm wind.

    High: 66 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain

  • Sunday

    Sunday: A 40 percent chance of rain. Mostly cloudy, with a high near 66.

    High: 66 °F

    Chance Rain

  • Sunday Night

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

    Low: 45 °F

    Chance Rain

  • Monday

    Monday: A chance of rain, mainly after 11am. Mostly cloudy, with a high near 68.

    High: 68 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 55. Calm wind becoming west around 6 mph in the afternoon.
Tonight
Patchy frost after 1am. Otherwise, increasing clouds, with a low around 33. West wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 58. Calm wind.
Friday Night
Mostly cloudy, with a low around 38. Calm wind.
Saturday
Mostly cloudy, with a high near 66. Calm wind.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 46.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 66.
Sunday Night
A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 45.
Monday
A chance of rain, mainly after 11am. Mostly cloudy, with a high near 68.
Monday Night
A chance of rain. Mostly cloudy, with a low around 45.
Tuesday
A chance of rain. Mostly cloudy, with a high near 59.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 44.
Wednesday
A chance of rain. Mostly cloudy, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Onalaska WA
 46.52°N 122.75°W (Elev. 423 ft)
Last Update:
1:20 am PDT Apr 16, 2026
Forecast Valid:
10am PDT Apr 16, 2026-6pm PDT Apr 22, 2026
 
Forecast Discussion
 
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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