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 >

Current conditions at

Tri-Cities Airport (KPSC)

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

Clear

46°F

8°C

Humidity 42%
Wind Speed NW 16 MPH
Barometer 30.27 in (1025.06 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 21 Mar 11:20 PM PDT
Extended Forecast for

Richland WA

  • Tonight

    Tonight: Areas of frost after 5am. Otherwise, clear, with a low around 35. Southwest wind 5 to 7 mph.

    Low: 35 °F

    Areas Frost

  • Sunday

    Sunday: Areas of frost before 11am. Otherwise, increasing clouds, with a high near 60. Light and variable wind becoming southeast around 5 mph in the afternoon.

    High: 60 °F

    Areas Frost
    then
    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 39. East wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Mostly Cloudy

  • Monday

    Monday: Increasing clouds, with a high near 63. Light and variable wind.

    High: 63 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Cloudy, with a low around 48. South wind around 5 mph becoming calm in the evening.

    Low: 48 °F

    Cloudy

  • Tuesday

    Tuesday: Rain likely. Cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of frost after 5am. Otherwise, clear, with a low around 35. Southwest wind 5 to 7 mph.
Sunday
Areas of frost before 11am. Otherwise, increasing clouds, with a high near 60. Light and variable wind becoming southeast around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 39. East wind around 5 mph becoming calm in the evening.
Monday
Increasing clouds, with a high near 63. Light and variable wind.
Monday Night
Cloudy, with a low around 48. South wind around 5 mph becoming calm in the evening.
Tuesday
Rain likely. Cloudy, with a high near 63. Chance of precipitation is 70%.
Tuesday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Sunny, with a high near 58.
Thursday Night
Mostly clear, with a low around 35.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 38.
Saturday
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Richland WA
 46.3°N 119.31°W (Elev. 400 ft)
Last Update:
11:02 pm PDT Mar 21, 2026
Forecast Valid:
11pm PDT Mar 21, 2026-6pm PDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation