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

61°F

16°C

Humidity 44%
Wind Speed SW 11 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 13 Apr 09:35 AM PDT
Extended Forecast for

Prosser WA

  • Today

    Today: Mostly sunny, with a high near 65. West wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 65 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 58. Southwest wind 7 to 16 mph, with gusts as high as 25 mph.

    High: 58 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 42. Southwest wind 10 to 15 mph, with gusts as high as 26 mph.

    Low: 42 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 11am. Mostly cloudy, with a high near 55. West wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 11pm. Snow level 2500 feet lowering to 1400 feet after midnight . Mostly cloudy, with a low around 32.

    Low: 32 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 65. West wind 10 to 14 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a low around 37. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.
Tuesday
Increasing clouds, with a high near 58. Southwest wind 7 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 42. Southwest wind 10 to 15 mph, with gusts as high as 26 mph.
Wednesday
Rain likely, mainly before 11am. Mostly cloudy, with a high near 55. West wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 20 percent chance of rain before 11pm. Snow level 2500 feet lowering to 1400 feet after midnight . Mostly cloudy, with a low around 32.
Thursday
Sunny, with a high near 59.
Thursday Night
Mostly clear, with a low around 32.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 37.
Saturday
Partly sunny, with a high near 67.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
A slight chance of rain. Partly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.22°N 119.79°W (Elev. 715 ft)
Last Update:
4:01 am PDT Apr 13, 2026
Forecast Valid:
9am PDT Apr 13, 2026-6pm PDT Apr 19, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation