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

Hazardous Weather Conditions

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

61°F

16°C

Humidity 84%
Wind Speed N 0 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 21 Aug 01:55 AM PDT
Extended Forecast for

Grandview WA

Fire Weather Watch August 22, 12:00pm until August 22, 10:00pm
Heat Advisory August 21, 02:11am until August 21, 10:00pm
Click here for hazard details and duration
Fire Weather Watch
Heat Advisory
  •  
    Heat Advisory August 21, 02:11am until August 21, 10:00pm

    NOW until 10:00pm Fri

    Heat Advisory

  • Overnight

    Low: 62 °F

    Mostly Cloudy

  • Friday

    Friday: Patchy smoke between 11am and 2pm. Mostly cloudy, with a high near 97. Light and variable wind.

    High: 97 °F

    Patchy Smoke

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Patchy smoke between 8am and 2pm. Partly sunny, then gradually becoming sunny, with a high near 94. Light and variable wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 94 °F

    Patchy Smoke

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. West wind 11 to 16 mph becoming light after midnight. Winds could gust as high as 28 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 62. Calm wind.
Friday
Patchy smoke between 11am and 2pm. Mostly cloudy, with a high near 97. Light and variable wind.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 64. Calm wind.
Saturday
Patchy smoke between 8am and 2pm. Partly sunny, then gradually becoming sunny, with a high near 94. Light and variable wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
Mostly clear, with a low around 54. West wind 11 to 16 mph becoming light after midnight. Winds could gust as high as 28 mph.
Sunday
Sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grandview WA
 46.25°N 119.89°W (Elev. 827 ft)
Last Update:
11:46 pm PDT Aug 20, 2026
Forecast Valid:
2am PDT Aug 21, 2026-6pm PDT Aug 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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