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.

Partly Cloudy

59°F

15°C

Humidity 62%
Wind Speed SSE 6 MPH
Barometer 29.65 in (1004.06 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 12 Apr 02:10 PM PDT
Extended Forecast for

Prosser WA

  • This Afternoon

    This Afternoon: A 30 percent chance of rain. Mostly cloudy, with a high near 67. Southwest wind around 6 mph.

    High: 67 °F

    Chance Rain

  • Tonight

    Tonight: A 40 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 44. West wind around 8 mph.

    Low: 44 °F

    Chance Rain

  • Monday

    Monday: Mostly sunny, with a high near 65. West wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 65 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38. Southwest wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 38 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 58. Southwest wind 6 to 16 mph, with gusts as high as 24 mph.

    High: 58 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

  • Wednesday

    Wednesday: A 50 percent chance of rain. Partly sunny, with a high near 56.

    High: 56 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 11pm. Snow level 2500 feet lowering to 1300 feet after midnight . Mostly cloudy, with a low around 31.

    Low: 31 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of rain. Mostly cloudy, with a high near 67. Southwest wind around 6 mph.
Tonight
A 40 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 44. West wind around 8 mph.
Monday
Mostly sunny, with a high near 65. West wind 8 to 14 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 38. Southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 58. Southwest wind 6 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
A 50 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 40.
Wednesday
A 50 percent chance of rain. Partly sunny, with a high near 56.
Wednesday Night
A 20 percent chance of rain before 11pm. Snow level 2500 feet lowering to 1300 feet after midnight . Mostly cloudy, with a low around 31.
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 35.
Saturday
Mostly sunny, with a high near 66.
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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:
11:46 am PDT Apr 12, 2026
Forecast Valid:
2pm PDT Apr 12, 2026-6pm PDT Apr 18, 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