Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Mist

37°F

3°C

Humidity 98%
Wind Speed N 0 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 37°F (3°C)
Visibility 1.50 mi
Last update 29 Jan 11:35 PM PST
Extended Forecast for

11 Miles SSW Mattawa WA

  • Tonight

    Tonight: A 40 percent chance of rain before 1am.  Cloudy, with a low around 35. South wind around 6 mph.

    Low: 35 °F

    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain after 10am.  Cloudy, with a high near 41. Southwest wind around 6 mph.

    High: 41 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 34. Northwest wind around 8 mph.

    Low: 34 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 40. North wind around 6 mph.

    High: 40 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34. North wind around 7 mph.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 42.

    High: 42 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of rain before 1am. Cloudy, with a low around 35. South wind around 6 mph.
Friday
A 20 percent chance of rain after 10am. Cloudy, with a high near 41. Southwest wind around 6 mph.
Friday Night
Mostly cloudy, with a low around 34. Northwest wind around 8 mph.
Saturday
Mostly cloudy, with a high near 40. North wind around 6 mph.
Saturday Night
Mostly cloudy, with a low around 34. North wind around 7 mph.
Sunday
Mostly cloudy, with a high near 42.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Partly sunny, with a high near 43.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 43.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 43.
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)
9:30 pm PST Jan 29, 2026
11pm PST Jan 29, 2026-6pm PST Feb 5, 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