Major Winter Storm Ongoing in the Upper Midwest; Severe Weather Tonight from the Mid-South to the Ohio Valley

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through Monday across the Upper Midwest and Upper Great Lakes. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-South to the Ohio Valley and the Southeast through tonight, moving into the Mid-Atlantic Monday. 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: Mostly cloudy, with a low around 35. Southwest wind around 7 mph.

    Low: 35 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 56. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 56 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 46. Breezy, with a southwest wind 13 to 22 mph, with gusts as high as 31 mph.

    Low: 46 °F

    Mostly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 60. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 31 mph.

    High: 60 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 47. Southwest wind 16 to 20 mph, with gusts as high as 29 mph.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 63. Breezy.

    High: 63 °F

    Mostly Cloudy
    then Partly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50. Breezy.

    Low: 50 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 35. Southwest wind around 7 mph.
Monday
Mostly cloudy, with a high near 56. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, with a low around 46. Breezy, with a southwest wind 13 to 22 mph, with gusts as high as 31 mph.
Tuesday
Partly sunny, with a high near 60. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 31 mph.
Tuesday Night
Mostly cloudy, with a low around 47. Southwest wind 16 to 20 mph, with gusts as high as 29 mph.
Wednesday
Mostly cloudy, with a high near 60.
Wednesday Night
Mostly cloudy, with a low around 49.
Thursday
Mostly cloudy, with a high near 63. Breezy.
Thursday Night
Mostly cloudy, with a low around 50. Breezy.
Friday
Partly sunny, with a high near 60.
Friday Night
Mostly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Mostly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
4:21 pm PDT Mar 15, 2026
6pm PDT Mar 15, 2026-6pm PDT Mar 22, 2026
 
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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