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

Sunnyside Municipal Airport (K1S5)

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

Clear

N/A

Humidity 87%
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 10 Mar 07:35 AM PDT
Extended Forecast for

Sunnyside WA

  • Tonight

    Tonight: Increasing clouds, with a low around 43. Light northwest wind.

    Low: 43 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a high near 70. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 70 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 47. South wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain, mainly between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 71. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 71 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 45. West wind 3 to 6 mph.

    Low: 45 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain after 11am. Partly sunny, with a high near 70.

    High: 70 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 43. Light northwest wind.
Friday
Mostly cloudy, with a high near 70. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 47. South wind around 5 mph becoming calm in the evening.
Saturday
A chance of rain, mainly between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 71. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 45. West wind 3 to 6 mph.
Sunday
A 20 percent chance of rain after 11am. Partly sunny, with a high near 70.
Sunday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 39.
Wednesday
A slight chance of rain. Partly sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sunnyside WA
 46.32°N 120°W (Elev. 748 ft)
Last Update:
3:01 pm PDT Apr 9, 2026
Forecast Valid:
8pm PDT Apr 9, 2026-6pm PDT Apr 16, 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