Late January Extreme Cold; Watching for Another East Coast Storm Threat This Weekend

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

31°F

-1°C

Humidity 85%
Wind Speed N 0 MPH
Barometer 30.37 in (1028.45 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 27 Jan 11:35 AM PST
Extended Forecast for

11 Miles SSW Mattawa WA

  • Today

    Today: Mostly cloudy, with a high near 31. North wind around 7 mph.

    High: 31 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of snow between 10pm and 1am.  Cloudy, with a low around 28. Northwest wind around 7 mph becoming southwest in the evening.  Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Snow

  • Wednesday

    Wednesday: A 10 percent chance of rain after 4pm.  Snow level rising to 4200 feet in the afternoon. Increasing clouds, with a high near 37. Southwest wind around 6 mph.

    High: 37 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 4am.  Cloudy, with a low around 32. Southwest wind around 6 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely, mainly before 10am.  Cloudy, with a high near 37. South wind around 6 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 37 °F

    Rain Likely
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain.  Cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

  • Friday

    Friday: A 30 percent chance of rain, mainly before 10am.  Mostly cloudy, with a high near 39.

    High: 39 °F

    Chance Rain

  • Friday Night

    Friday Night: A 20 percent chance of rain before 10pm.  Mostly cloudy, with a low around 33.

    Low: 33 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly cloudy, with a high near 31. North wind around 7 mph.
Tonight
A slight chance of snow between 10pm and 1am. Cloudy, with a low around 28. Northwest wind around 7 mph becoming southwest in the evening. Chance of precipitation is 20%.
Wednesday
A 10 percent chance of rain after 4pm. Snow level rising to 4200 feet in the afternoon. Increasing clouds, with a high near 37. Southwest wind around 6 mph.
Wednesday Night
Rain likely, mainly after 4am. Cloudy, with a low around 32. Southwest wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain likely, mainly before 10am. Cloudy, with a high near 37. South wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 40 percent chance of rain. Cloudy, with a low around 33.
Friday
A 30 percent chance of rain, mainly before 10am. Mostly cloudy, with a high near 39.
Friday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 33.
Saturday
Mostly cloudy, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Mostly cloudy, with a high near 42.
Sunday Night
Mostly cloudy, with a low around 34.
Monday
Partly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
9:15 am PST Jan 27, 2026
11am PST Jan 27, 2026-6pm PST Feb 2, 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