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

33°F

1°C

Humidity 85%
Wind Speed N 0 MPH
Barometer 30.54 in (1034.2 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 18 Jan 03:15 PM PST
Extended Forecast for

11 Miles SSW Mattawa WA

Air Stagnation Advisory January 18, 03:35pm until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 18, 03:35pm until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Tonight

    Low: 26 °F

    Mostly Cloudy

  • M.L.King Day

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

    High: 34 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a steady temperature around 29. Light and variable wind becoming northwest around 5 mph after midnight.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 33. North wind 5 to 7 mph.

    High: 33 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26. Light northwest wind.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly cloudy, with a low around 26. Light north wind.
M.L.King Day
Partly sunny, with a high near 34. North wind around 5 mph becoming light and variable in the morning.
Monday Night
Partly cloudy, with a steady temperature around 29. Light and variable wind becoming northwest around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 33. North wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 26. Light northwest wind.
Wednesday
Partly sunny, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
Partly sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 34.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 27.
Saturday
A slight chance of snow. Partly sunny, with a high near 33.
Saturday Night
A slight chance of snow. Mostly cloudy, with a low around 25.
Sunday
A slight chance of snow. Partly sunny, with a high near 34.
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)
3:20 pm PST Jan 18, 2026
3pm PST Jan 18, 2026-6pm PST Jan 25, 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