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.

Rain

54°F

12°C

Humidity 61%
Wind Speed N 0 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 Mar 01:53 AM PDT
Extended Forecast for

4 Miles S Richland WA

  • Overnight

    Overnight: A 30 percent chance of rain. Cloudy, with a low around 50. Northwest wind around 8 mph.

    Low: 50 °F

    Chance Rain

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 62. Northwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 62 °F

    Gradual
    Clearing

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36. Northwest wind 6 to 10 mph becoming southwest after midnight.

    Low: 36 °F

    Mostly Clear

  • Sunday

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

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 40. South wind around 5 mph becoming calm in the evening.

    Low: 40 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance Rain

  • 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

Detailed Forecast

Overnight
A 30 percent chance of rain. Cloudy, with a low around 50. Northwest wind around 8 mph.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 62. Northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 36. Northwest wind 6 to 10 mph becoming southwest after midnight.
Sunday
Mostly sunny, with a high near 59. Southwest wind 3 to 6 mph.
Sunday Night
Mostly cloudy, with a low around 40. South wind around 5 mph becoming calm in the evening.
Monday
Mostly cloudy, with a high near 60.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
A 30 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 62.
Tuesday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 44.
Wednesday
Partly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
Sunny, with a high near 57.
Thursday Night
Mostly clear, with a low around 35.
Friday
Sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Richland WA
 46.24°N 119.3°W (Elev. 568 ft)
Last Update:
1:45 am PDT Mar 21, 2026
Forecast Valid:
2am PDT Mar 21, 2026-6pm PDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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