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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Mostly Cloudy

32°F

0°C

Humidity 97%
Wind Speed N 0 MPH
Barometer 30.45 in (1031.16 mb)
Dewpoint 31°F (-1°C)
Visibility 7.00 mi
Last update 11 Jan 04:35 AM PST
Extended Forecast for

17 Miles SE Mattawa WA

  • Today

    Today: Mostly cloudy, with a high near 45. Calm wind.

    High: 45 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. Light and variable wind.

    Low: 35 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 53. South wind 3 to 5 mph.

    High: 53 °F

    Partly Sunny

  • Monday Night

    Monday Night: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 36. Southwest wind 3 to 5 mph.

    Low: 36 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 49. Calm wind.

    High: 49 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 45. Calm wind.
Tonight
Mostly cloudy, with a low around 35. Light and variable wind.
Monday
Partly sunny, with a high near 53. South wind 3 to 5 mph.
Monday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 36. Southwest wind 3 to 5 mph.
Tuesday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 49. Calm wind.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Mostly sunny, with a high near 48.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 47.
Thursday Night
Partly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 44.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SE Mattawa WA
 46.59°N 119.64°W (Elev. 600 ft)
Last Update:
4:25 am PST Jan 11, 2026
Forecast Valid:
4am PST Jan 11, 2026-6pm PST Jan 17, 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