Fire Weather Concerns; Record Warmth Spreads

The Plains to the mid-Mississippi Valley continue with warm and dry conditions. Any fires that initiate could spread quickly. The warm temperatures will expand across the Southern Plains into the Southwest where numerous records are expected through the weekend. Meanwhile, a cold front will move southward across the northern Plains and Great Lakes region where some snow will develop this weekend. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

30°F

-1°C

Humidity 90%
Wind Speed N 0 MPH
Barometer 30.25 in (1024.38 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 27 Feb 06:55 AM PST
Extended Forecast for

Prosser WA

  • Today

    Today: Sunny, with a high near 60. Light southwest wind increasing to 6 to 11 mph in the morning.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 32. West wind 3 to 7 mph.

    Low: 32 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 52. Light northeast wind.

    High: 52 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 54. Calm wind becoming north around 5 mph in the afternoon.

    High: 54 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 60. Light southwest wind increasing to 6 to 11 mph in the morning.
Tonight
Mostly clear, with a low around 32. West wind 3 to 7 mph.
Saturday
Increasing clouds, with a high near 52. Light northeast wind.
Saturday Night
Mostly cloudy, with a low around 34. Calm wind.
Sunday
Partly sunny, with a high near 54. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Partly sunny, with a high near 59.
Tuesday Night
A chance of rain after 10pm. Cloudy, with a low around 43.
Wednesday
A chance of rain. Mostly cloudy, with a high near 57.
Wednesday Night
A chance of rain. Partly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.22°N 119.79°W (Elev. 715 ft)
4:21 am PST Feb 27, 2026
7am PST Feb 27, 2026-6pm PST Mar 5, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database