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

Tri-Cities Airport (KPSC)

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

Clear

72°F

22°C

Humidity 35%
Wind Speed NNW 6 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 01 May 12:00 PM PDT
Extended Forecast for

Prosser WA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 82. Northeast wind around 6 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. Northeast wind around 6 mph becoming west after midnight.

    Low: 54 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 85. Light and variable wind becoming north 5 to 7 mph in the morning.

    High: 85 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 54. Northeast wind around 7 mph becoming northwest after midnight.

    Low: 54 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 88. Northwest wind around 7 mph becoming northeast in the afternoon.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 82. Northeast wind around 6 mph.
Tonight
Mostly cloudy, with a low around 54. Northeast wind around 6 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 85. Light and variable wind becoming north 5 to 7 mph in the morning.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 54. Northeast wind around 7 mph becoming northwest after midnight.
Sunday
Sunny, with a high near 88. Northwest wind around 7 mph becoming northeast in the afternoon.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
Last Update:
11:46 am PDT May 1, 2026
Forecast Valid:
12pm PDT May 1, 2026-6pm PDT May 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation