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.

Rain

52°F

11°C

Humidity 63%
Wind Speed W 6 MPH
Barometer 29.7 in (1005.76 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 15 Apr 07:53 AM PDT
Extended Forecast for

Prosser WA

  • Today

    Today: A slight chance of rain before 11am, then a slight chance of rain after 2pm. Cloudy through mid morning, then becoming mostly sunny, with a high near 56. West wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 56 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 8pm. Snow level 2300 feet lowering to 700 feet after midnight . Partly cloudy, with a low around 31. West wind 7 to 14 mph, with gusts as high as 24 mph.

    Low: 31 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 59. West wind 6 to 9 mph.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32. West wind 5 to 9 mph.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 61. Light south wind.

    High: 61 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain. Partly sunny, with a high near 71.

    High: 71 °F

    Slight Chance
    Rain

Detailed Forecast

Today
A slight chance of rain before 11am, then a slight chance of rain after 2pm. Cloudy through mid morning, then becoming mostly sunny, with a high near 56. West wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tonight
A 20 percent chance of rain before 8pm. Snow level 2300 feet lowering to 700 feet after midnight . Partly cloudy, with a low around 31. West wind 7 to 14 mph, with gusts as high as 24 mph.
Thursday
Sunny, with a high near 59. West wind 6 to 9 mph.
Thursday Night
Mostly clear, with a low around 32. West wind 5 to 9 mph.
Friday
Sunny, with a high near 61. Light south wind.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 45.
Sunday
A 20 percent chance of rain. Partly sunny, with a high near 71.
Sunday Night
A slight chance of rain before 11pm. Mostly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 77.
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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:
4:00 am PDT Apr 15, 2026
Forecast Valid:
8am PDT Apr 15, 2026-6pm PDT Apr 21, 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