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

52°F

11°C

Humidity 66%
Wind Speed WNW 3 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 Mar 02:53 AM PDT
Extended Forecast for

Wallula WA

  • Overnight

    Overnight: Rain likely. Cloudy, with a low around 51. Northwest wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely before 8am. Cloudy through mid morning, then gradual clearing, with a high near 59. Southwest wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 59 °F

    Rain Likely
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. West wind 8 to 14 mph, with gusts as high as 18 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 57. West wind 7 to 10 mph.

    High: 57 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 40. Northwest wind around 6 mph becoming light and variable in the evening.

    Low: 40 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Cloudy, with a low around 49.

    Low: 49 °F

    Cloudy

  • Tuesday

    Tuesday: Rain likely, mainly after 11am. Cloudy, with a high near 58. Chance of precipitation is 60%.

    High: 58 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

Detailed Forecast

Overnight
Rain likely. Cloudy, with a low around 51. Northwest wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain likely before 8am. Cloudy through mid morning, then gradual clearing, with a high near 59. Southwest wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly clear, with a low around 38. West wind 8 to 14 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 57. West wind 7 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 40. Northwest wind around 6 mph becoming light and variable in the evening.
Monday
Mostly cloudy, with a high near 59.
Monday Night
Cloudy, with a low around 49.
Tuesday
Rain likely, mainly after 11am. Cloudy, with a high near 58. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 45.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 58.
Wednesday Night
Partly cloudy, with a low around 39. Breezy.
Thursday
Mostly sunny, with a high near 55.
Thursday Night
Mostly clear, with a low around 38.
Friday
Sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wallula WA
 46.07°N 118.91°W (Elev. 338 ft)
Last Update:
2:30 am PDT Mar 21, 2026
Forecast Valid:
3am 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