Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

64°F

18°C

Humidity 55%
Wind Speed N 0 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 04 Sep 11:35 AM PDT
Extended Forecast for

Sunnyside WA

  • Today

    Today: Sunny, with a high near 73. Calm wind.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers, mainly after 2pm.  Cloudy, then gradually becoming mostly sunny, with a high near 73. Calm wind.

    High: 73 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers.  Mostly cloudy, with a high near 76. Calm wind.

    High: 76 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly after 11pm.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

  • Labor Day

    Labor Day: A 20 percent chance of showers before 11am.  Mostly sunny, with a high near 81.

    High: 81 °F

    Slight Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 73. Calm wind.
Tonight
Partly cloudy, with a low around 44. Calm wind.
Saturday
A 40 percent chance of showers, mainly after 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 73. Calm wind.
Saturday Night
Partly cloudy, with a low around 44. Calm wind.
Sunday
A 20 percent chance of showers. Mostly cloudy, with a high near 76. Calm wind.
Sunday Night
A 30 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 46.
Labor Day
A 20 percent chance of showers before 11am. Mostly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Sunnyside WA
 46.32°N 120°W (Elev. 748 ft)
11:32 am PDT Sep 4, 2026
11am PDT Sep 4, 2026-6pm PDT Sep 10, 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