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

Dangerous Heat and Possible Flooding This Week

Hot temperatures and high humidity are forecast to continue across much of east Texas into the mid-Mississippi Valley through this week. Heavy to excessive rainfall occurring at times through Friday could bring areas of flooding across parts of the central Plains into the upper Midwest and Four Corners states. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Partly Cloudy

53°F

12°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 15 Sep 08:15 AM PDT
Extended Forecast for

12 Miles NNW West Richland WA

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 70. Calm wind becoming north 5 to 8 mph in the afternoon.

    High: 70 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 50. West wind around 7 mph.

    Low: 50 °F

    Gradual
    Clearing

  • Wednesday

    Wednesday: Sunny, with a high near 77. Northwest wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 22 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 52. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.

    Low: 52 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Light north wind.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 70. Calm wind becoming north 5 to 8 mph in the afternoon.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 50. West wind around 7 mph.
Wednesday
Sunny, with a high near 77. Northwest wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
Clear, with a low around 52. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 81. Light north wind.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNW West Richland WA
 46.47°N 119.54°W (Elev. 600 ft)
Last Update:
4:00 am PDT Sep 15, 2026
Forecast Valid:
8am PDT Sep 15, 2026-6pm PDT Sep 21, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation