Snow May Produce Poor Travel Conditions in the North-Central U.S. and East Coast

A strong cold front sweeping across the Northern Plains may bring snow showers and snow squalls from eastern Montana to north-central Nebraska, with blizzard conditions possible in eastern North Dakota and northwestern Montana. Heavy snow is expected to persist downwind of the Great Lakes. Snow showers will spread up the East Coast across the Mid-Atlantic and Northeast coasts. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

32°F

0°C

Humidity 84%
Wind Speed W 6 MPH
Barometer 30.57 in (1035.22 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 18 Jan 11:15 AM PST
Extended Forecast for

11 Miles SSW Mattawa WA

Air Stagnation Advisory January 18, 11:34am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 18, 11:34am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Today

    High: 35 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. North wind around 5 mph.

    Low: 27 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 34. North wind around 5 mph becoming light and variable  in the morning.

    High: 34 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. West wind 3 to 5 mph.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 34. North wind 3 to 7 mph.

    High: 34 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 33.

    High: 33 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 35. Northeast wind around 5 mph.
Tonight
Mostly cloudy, with a low around 27. North wind around 5 mph.
M.L.King Day
Mostly sunny, with a high near 34. North wind around 5 mph becoming light and variable in the morning.
Monday Night
Partly cloudy, with a low around 26. West wind 3 to 5 mph.
Tuesday
Partly sunny, with a high near 34. North wind 3 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 27.
Wednesday
Mostly cloudy, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Partly sunny, with a high near 35.
Thursday Night
Mostly cloudy, with a low around 29.
Friday
A slight chance of snow. Partly sunny, with a high near 37.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 23.
Saturday
A slight chance of snow. Partly sunny, with a high near 30.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
11:21 am PST Jan 18, 2026
11am 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