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Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

35°F

2°C

Humidity 89%
Wind Speed N 0 MPH
Barometer 30.59 in (1035.9 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 16 Jan 06:35 PM PST
Extended Forecast for

11 Miles SSW Mattawa WA

Air Stagnation Advisory January 16, 06:42pm until January 20, 04:00pm
Freezing Fog Advisory January 16, 06:42pm until January 17, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
Freezing Fog Advisory
  •  
    Air Stagnation Advisory January 16, 06:42pm until January 20, 04:00pm
    Freezing Fog Advisory January 16, 06:42pm until January 17, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a steady temperature around 31. Northeast wind 3 to 5 mph.

    High: 31 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29. Northwest wind around 6 mph.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 35. North wind around 6 mph.

    High: 35 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. North wind around 6 mph.

    Low: 27 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Monday Night

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

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 31. North wind around 6 mph.
Saturday
Partly sunny, with a steady temperature around 31. Northeast wind 3 to 5 mph.
Saturday Night
Mostly cloudy, with a low around 29. Northwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 35. North wind around 6 mph.
Sunday Night
Mostly clear, with a low around 27. North wind around 6 mph.
M.L.King Day
Mostly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 34.
Tuesday Night
Partly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 34.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Mostly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
Last Update:
4:55 pm PST Jan 16, 2026
Forecast Valid:
6pm PST Jan 16, 2026-6pm PST Jan 23, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation