Heavy Snow and Disruptive Ice in the Upper Midwest; Severe Thunderstorms in the Southern Plains

A late season winter storm will produce a combination of heavy snow and disruptive ice starting this evening in the Northern Plains and moving into the Upper Midwest and Great Lakes by tonight continuing through Thursday. Severe thunderstorms will likely produce severe wind gusts, large hail, a few tornadoes, and heavy rainfall across the southern and central Plains into the morning. 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

  • Tonight

    Tonight: A 20 percent chance of snow after 2am.  Partly cloudy, with a low around 33. West wind 15 to 18 mph, with gusts as high as 29 mph.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Thursday

    Thursday: A slight chance of snow after 11am, mixing with rain after 2pm.  Partly sunny, with a high near 48. Breezy, with a west wind 15 to 23 mph, with gusts as high as 34 mph.  Chance of precipitation is 20%.

    High: 48 °F

    Breezy.
    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. Breezy, with a west wind 14 to 23 mph, with gusts as high as 33 mph.

    Low: 34 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Friday

    Friday: Sunny, with a high near 53. Southwest wind 7 to 10 mph.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38. South wind around 7 mph becoming northwest in the evening.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of snow after 2am. Partly cloudy, with a low around 33. West wind 15 to 18 mph, with gusts as high as 29 mph.
Thursday
A slight chance of snow after 11am, mixing with rain after 2pm. Partly sunny, with a high near 48. Breezy, with a west wind 15 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 34. Breezy, with a west wind 14 to 23 mph, with gusts as high as 33 mph.
Friday
Sunny, with a high near 53. Southwest wind 7 to 10 mph.
Friday Night
Mostly clear, with a low around 38. South wind around 7 mph becoming northwest in the evening.
Saturday
Sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 65.
Monday Night
Mostly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 57.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
10:36 pm PDT Apr 1, 2026
10pm PDT Apr 1, 2026-6pm PDT Apr 8, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database