Tracking Winter Weather and Frigid Temperatures This Weekend

Another clipper will drop into the Northern Plains and Upper Midwest into Sunday with snow and gusty winds contributing to some areas of blizzard conditions and snow squalls. Impactful snowfall will occur up and down the East Coast Sunday extending from the western Florida Panhandle to Maine. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

31°F

-1°C

Humidity 92%
Wind Speed W 5 MPH
Barometer 30.52 in (1033.53 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 18 Jan 03:15 AM PST
Extended Forecast for

11 Miles SE Mattawa WA

Air Stagnation Advisory January 18, 03:23am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 18, 03:23am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Overnight

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 39. Light northeast wind.

    High: 39 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Cloudy

  • M.L.King Day

    M.L.King Day: Cloudy, then gradually becoming mostly sunny, with a high near 39. Calm wind.

    High: 39 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 29. Light northwest wind.
Sunday
Mostly cloudy, with a high near 39. Light northeast wind.
Sunday Night
Cloudy, with a low around 26. Calm wind.
M.L.King Day
Cloudy, then gradually becoming mostly sunny, with a high near 39. Calm wind.
Monday Night
Partly cloudy, with a low around 26. Calm wind.
Tuesday
Partly sunny, with a high near 40.
Tuesday Night
Partly cloudy, with a low around 26.
Wednesday
Mostly cloudy, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 42.
Thursday Night
Mostly cloudy, with a low around 29.
Friday
A slight chance of rain and snow. Partly sunny, with a high near 45.
Friday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 23.
Saturday
A slight chance of rain and snow. Partly sunny, with a high near 37.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SE Mattawa WA
 46.64°N 119.74°W (Elev. 400 ft)
3:16 am PST Jan 18, 2026
3am PST Jan 18, 2026-6pm PST Jan 24, 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