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

Threats For Heavy Rain and Severe Thunderstorms Continue in the Plains; Fire Weather Conditions Worsen in the Southwest

On Monday and Tuesday, the focus for heavy rain and severe thunderstorms will continue in the Plains and central Mississippi River Valley. Meanwhile, hot conditions and Critical Fire Weather looms over the Great Basin and Southwest U.S. through midweek. Read More >

Current conditions at

Tri-Cities Airport (KPSC)

Lat: 46.26955°NLon: 119.11813°WElev: 397.0ft.

Clear

86°F

30°C

Humidity 18%
Wind Speed NNW 3 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 15 Jun 05:53 PM PDT
Extended Forecast for

Prosser WA

  • Tonight

    Tonight: Increasing clouds, with a low around 54. Light and variable wind.

    Low: 54 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 89. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. West wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. Southwest wind 3 to 8 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 54. West wind 5 to 10 mph.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 54. Light and variable wind.
Monday
Mostly sunny, with a high near 89. Light west wind increasing to 5 to 10 mph in the afternoon.
Monday Night
Mostly clear, with a low around 50. West wind 6 to 13 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 87. Southwest wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 54. West wind 5 to 10 mph.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 50.
Juneteenth
Sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 47.
Saturday
A chance of showers. Partly sunny, with a high near 71.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 47.
Sunday
Sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.22°N 119.79°W (Elev. 715 ft)
Last Update:
4:15 pm PDT Jun 15, 2025
Forecast Valid:
6pm PDT Jun 15, 2025-6pm PDT Jun 22, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation