Extreme Heat and Excessive Rainfall This Week

A significant heat wave continues for the Rockies, Northern Plains, and Great Lakes into the Mid-Atlantic, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. Excessive rainfall my bring life-threatening and locally catastrophic flash and urban flooding across portions of southwestern Texas through early Friday. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.

Clear

68°F

20°C

Humidity 83%
Wind Speed N 0 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 15 Jul 06:55 AM PDT
Extended Forecast for

Prosser WA

  • Today

    Today: Sunny and hot, with a high near 98. Light and variable wind.

    High: 98 °F

    Hot

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 11pm.  Mostly cloudy, with a low around 64. Calm wind becoming west around 5 mph after midnight.

    Low: 64 °F

    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 8am.  Partly sunny, then gradually becoming sunny, with a high near 95. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 95 °F

    Chance
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59. Southwest wind 5 to 10 mph, with gusts as high as 21 mph.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92. Light southwest wind.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

Detailed Forecast

Today
Sunny and hot, with a high near 98. Light and variable wind.
Tonight
A 30 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 64. Calm wind becoming west around 5 mph after midnight.
Thursday
A 30 percent chance of showers, mainly before 8am. Partly sunny, then gradually becoming sunny, with a high near 95. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 59. Southwest wind 5 to 10 mph, with gusts as high as 21 mph.
Friday
Sunny, with a high near 92. Light southwest wind.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 93.
Saturday Night
Clear, with a low around 59.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 63.
Monday
Mostly sunny, with a high near 97.
Monday Night
Mostly cloudy, with a low around 65.
Tuesday
Mostly sunny and hot, with a high near 98.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.22°N 119.79°W (Elev. 715 ft)
4:01 am PDT Jul 15, 2026
7am PDT Jul 15, 2026-6pm PDT Jul 21, 2026
 
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Additional Resources

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