Severe Thunderstorms and Heavy Rainfall in the Ohio Valley and Great Lakes; Winter Weather in the Northern Tier

A slow moving front extending from the Great Lakes region into the Plains will bring snow, wintry mix, and ice accumulation north of the front from the Upper Midwest into New England, and severe weather and heavy rain south of the front. Scattered severe thunderstorms with damaging gusts, severe hail, and heavy rain are expected across parts of the Great Lakes/Midwest through tonight. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.

Clear

N/A

Humidity 87%
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 10 Mar 07:35 AM PDT
Extended Forecast for

11 Miles SSW Mattawa WA

  • Today

    Today: Partly sunny, with a high near 43. North wind 7 to 9 mph becoming south in the afternoon.

    High: 43 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of rain and snow after 2am.  Snow level rising to 3700 feet. Increasing clouds, with a low around 37. Southwest wind around 7 mph.  Chance of precipitation is 20%.

    Low: 37 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of rain and snow before 11am, then rain.  Snow level 3300 feet rising to 4800 feet in the afternoon. High near 45. Southwest wind 9 to 14 mph becoming southeast in the morning. Winds could gust as high as 23 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow
    then Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 11pm, then a slight chance of snow.  Snow level 4800 feet lowering to 3100 feet after midnight . Mostly cloudy, with a low around 34. Southwest wind around 16 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow
    Likely then
    Slight Chance
    Snow

  • Thursday

    Thursday: A slight chance of snow after 11am, mixing with rain after 2pm.  Mostly sunny, with a high near 48. West wind 14 to 21 mph, with gusts as high as 33 mph.  Chance of precipitation is 20%.

    High: 48 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. Breezy.

    Low: 34 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Friday

    Friday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 43. North wind 7 to 9 mph becoming south in the afternoon.
Tonight
A slight chance of rain and snow after 2am. Snow level rising to 3700 feet. Increasing clouds, with a low around 37. Southwest wind around 7 mph. Chance of precipitation is 20%.
Wednesday
A chance of rain and snow before 11am, then rain. Snow level 3300 feet rising to 4800 feet in the afternoon. High near 45. Southwest wind 9 to 14 mph becoming southeast in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday Night
Rain likely before 11pm, then a slight chance of snow. Snow level 4800 feet lowering to 3100 feet after midnight . Mostly cloudy, with a low around 34. Southwest wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
A slight chance of snow after 11am, mixing with rain after 2pm. Mostly sunny, with a high near 48. West wind 14 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 34. Breezy.
Friday
Sunny, with a high near 53.
Friday Night
Mostly clear, with a low around 37.
Saturday
Sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
4:20 am PDT Mar 31, 2026
7am PDT Mar 31, 2026-6pm PDT Apr 6, 2026
 
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Additional Resources

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