National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Cold and Gusty Winds Anticipated This Weekend

A significant arctic outbreak will bring frigid temperatures and dangerously cold wind chills to the Northeast and Mid-Atlantic this weekend. Strong winds which could produce tree damage and power outages, and periods of snow squalls are also possible. Relief from this cold and a warming trend is forecast to commence by the beginning to middle of next week. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

47°F

8°C

Humidity 78%
Wind Speed N 0 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 05 Feb 02:35 PM PST
Extended Forecast for

11 Miles SSW Mattawa WA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 37. North wind around 6 mph.

    High: 37 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Northwest wind around 6 mph.

    Low: 34 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 39. South wind 3 to 5 mph.

    High: 39 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 34. West wind around 5 mph.

    Low: 34 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 42. West wind around 6 mph becoming south in the morning.

    High: 42 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 40 percent chance of rain. Cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

  • Sunday

    Sunday: Rain likely, mainly before 4pm. Cloudy, with a high near 45. Chance of precipitation is 70%.

    High: 45 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A chance of rain before 1am, then a slight chance of rain and snow. Snow level 5300 feet lowering to 4000 feet after midnight . Mostly cloudy, with a low around 36. Chance of precipitation is 50%.

    Low: 36 °F

    Chance Rain
    then Slight
    Chance
    Rain/Snow

  • Monday

    Monday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 37. North wind around 6 mph.
Tonight
Partly cloudy, with a low around 34. Northwest wind around 6 mph.
Friday
Partly sunny, with a high near 39. South wind 3 to 5 mph.
Friday Night
Partly cloudy, with a low around 34. West wind around 5 mph.
Saturday
Mostly cloudy, with a high near 42. West wind around 6 mph becoming south in the morning.
Saturday Night
A 40 percent chance of rain. Cloudy, with a low around 40.
Sunday
Rain likely, mainly before 4pm. Cloudy, with a high near 45. Chance of precipitation is 70%.
Sunday Night
A chance of rain before 1am, then a slight chance of rain and snow. Snow level 5300 feet lowering to 4000 feet after midnight . Mostly cloudy, with a low around 36. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 46.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
Mostly clear, with a low around 31.
Wednesday
Mostly sunny, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
Last Update:
2:02 pm PST Feb 5, 2026
Forecast Valid:
2pm PST Feb 5, 2026-6pm PST Feb 11, 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