Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

60°F

16°C

Humidity 35%
Wind Speed N 0 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 32°F (0°C)
Visibility 7.00 mi
Last update 10 Oct 05:35 PM PDT
Extended Forecast for

Prosser WA

  • Tonight

    Tonight: Mostly clear, with a low around 41. Calm wind becoming northwest 5 to 7 mph after midnight.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 60. Northeast wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 5am.  Otherwise, partly cloudy, with a low around 36. North wind 5 to 7 mph becoming calm  in the evening. Winds could gust as high as 18 mph.

    Low: 36 °F

    Partly Cloudy
    then Areas
    Frost

  • Columbus Day

    Columbus Day: Areas of frost before 11am.  Otherwise, mostly sunny, with a high near 63. Calm wind.

    High: 63 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 32. Calm wind.

    Low: 32 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 41. Calm wind becoming northwest 5 to 7 mph after midnight.
Sunday
Mostly sunny, with a high near 60. Northeast wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Areas of frost after 5am. Otherwise, partly cloudy, with a low around 36. North wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Columbus Day
Areas of frost before 11am. Otherwise, mostly sunny, with a high near 63. Calm wind.
Monday Night
Clear, with a low around 32. Calm wind.
Tuesday
Sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 41.
Friday
Sunny, with a high near 72.
Friday Night
Mostly clear, with a low around 42.
Saturday
Mostly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
3:01 pm PDT Oct 10, 2026
5pm PDT Oct 10, 2026-6pm PDT Oct 17, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database