Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

DW8787 CHEHALIS (D8787)

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

NA

39°F

4°C

Humidity 97%
Wind Speed NNW 0 MPH
Barometer 29.82 in (1009.82 mb)
Dewpoint 38°F (3°C)
Visibility NA
Last update 15 Apr 02:00 AM PDT
Extended Forecast for

6 Miles SE Onalaska WA

  • Overnight

    Overnight: A 20 percent chance of rain before 3am.  Mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Rain, possibly mixed with snow showers, becoming all rain after noon. Some thunder is also possible.  High near 47. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 47 °F

    Rain/Snow
    then Showers

  • Wednesday Night

    Wednesday Night: Rain likely and possibly a thunderstorm before 9pm, then a chance of rain between 9pm and 10pm.  Mostly cloudy, with a low around 33. Calm wind.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 33 °F

    Rain Likely
    then Mostly
    Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain after 11am.  Partly sunny, with a high near 53. Light and variable wind.

    High: 53 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 36. West wind around 5 mph becoming calm  in the evening.

    Low: 36 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Friday Night

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

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of rain after 11am.  Mostly cloudy, with a high near 65.

    High: 65 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A chance of rain.  Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain

Detailed Forecast

Overnight
A 20 percent chance of rain before 3am. Mostly cloudy, with a low around 34. Calm wind.
Wednesday
Rain, possibly mixed with snow showers, becoming all rain after noon. Some thunder is also possible. High near 47. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday Night
Rain likely and possibly a thunderstorm before 9pm, then a chance of rain between 9pm and 10pm. Mostly cloudy, with a low around 33. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 30 percent chance of rain after 11am. Partly sunny, with a high near 53. Light and variable wind.
Thursday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 36. West wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 57.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
A slight chance of rain after 11am. Mostly cloudy, with a high near 65.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 44.
Sunday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 67.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 44.
Monday
A chance of rain. Partly sunny, with a high near 69.
Monday Night
A chance of rain. Partly cloudy, with a low around 45.
Tuesday
A chance of rain. Partly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Onalaska WA
 46.51°N 122.62°W (Elev. 400 ft)
1:16 am PDT Apr 15, 2026
2am PDT Apr 15, 2026-6pm PDT Apr 21, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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