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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Tri-Cities Airport (KPSC)

Lat: 46.26955°NLon: 119.11813°WElev: 397.0ft.

Overcast

50°F

10°C

Humidity 79%
Wind Speed SSE 10 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 21 Mar 08:53 AM PDT
Extended Forecast for

Kennewick WA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 64. West wind 7 to 9 mph.

    High: 64 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 36. Northwest wind 5 to 9 mph becoming southwest after midnight.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 59. South wind 3 to 6 mph.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 38. Light and variable wind.

    Low: 38 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 60. Light and variable wind.

    High: 60 °F

    Partly Sunny

  • Monday Night

    Monday Night: Cloudy, with a low around 47.

    Low: 47 °F

    Cloudy

  • Tuesday

    Tuesday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.

    High: 60 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain

  • Wednesday

    Wednesday: A 20 percent chance of rain before 11am. Mostly sunny, with a high near 62.

    High: 62 °F

    Slight Chance
    Rain then
    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 64. West wind 7 to 9 mph.
Tonight
Mostly clear, with a low around 36. Northwest wind 5 to 9 mph becoming southwest after midnight.
Sunday
Mostly sunny, with a high near 59. South wind 3 to 6 mph.
Sunday Night
Mostly cloudy, with a low around 38. Light and variable wind.
Monday
Partly sunny, with a high near 60. Light and variable wind.
Monday Night
Cloudy, with a low around 47.
Tuesday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 44.
Wednesday
A 20 percent chance of rain before 11am. Mostly sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 37.
Thursday
Sunny, with a high near 57.
Thursday Night
Mostly clear, with a low around 36.
Friday
Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Kennewick WA
 46.22°N 119.16°W (Elev. 446 ft)
Last Update:
8:52 am PDT Mar 21, 2026
Forecast Valid:
9am PDT Mar 21, 2026-6pm PDT Mar 27, 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