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

58°F

14°C

Humidity 39%
Wind Speed N 0 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 27 Feb 03:55 PM PST
Extended Forecast for

Prosser WA

  • Tonight

    Tonight: Mostly clear, with a low around 32. Southwest wind 8 to 13 mph becoming light west  after midnight.

    Low: 32 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 53. Light and variable wind becoming northeast around 5 mph in the afternoon.

    High: 53 °F

    Increasing
    Clouds

  • Saturday Night

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

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 55. Northeast wind 3 to 5 mph.

    High: 55 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. Light and variable wind.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after 10pm.  Cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 32. Southwest wind 8 to 13 mph becoming light west after midnight.
Saturday
Increasing clouds, with a high near 53. Light and variable wind becoming northeast around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 34. Calm wind.
Sunday
Mostly sunny, with a high near 55. Northeast wind 3 to 5 mph.
Sunday Night
Mostly clear, with a low around 35. Light and variable wind.
Monday
Mostly sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Mostly cloudy, with a high near 59.
Tuesday Night
A 30 percent chance of rain after 10pm. Cloudy, with a low around 43.
Wednesday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 57.
Wednesday Night
A chance of rain. Partly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 38.
Friday
A chance of rain. Mostly cloudy, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
3:27 pm PST Feb 27, 2026
4pm PST Feb 27, 2026-6pm PST Mar 6, 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