National Weather Service

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New Version of Climate Plots Arrives May 1, 2026: Early Access Now Available Under "Climate Graphs and Charts"
SCN26-34: Discontinuation of the Max/Min Temperature and Precipitation Table Product (RTP) for all NWS Alaska Region, Eastern Region, and Western Region Offices: Effective May 6, 2026

Current conditions at

Tri-Cities Airport (KPSC)

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

Overcast

46°F

8°C

Humidity	75%
Wind Speed	SSW 10 MPH
Barometer	30.08 in (1018.63 mb)
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Wind Chill	41°F (5°C)
Last update	23 Apr 07:00 AM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles WSW Wallula WA

Today
High: 61 °F
Decreasing
Clouds
Tonight
Low: 43 °F
Slight Chance
Rain then
Partly Cloudy
Friday
High: 58 °F
Sunny
Friday Night
Low: 39 °F
Mostly Clear
Saturday
High: 60 °F
Sunny
Saturday Night
Low: 41 °F
Mostly Clear
Sunday
High: 61 °F
Sunny
Sunday Night
Low: 46 °F
Partly Cloudy
Monday
High: 66 °F
Mostly Sunny

Detailed Forecast

Today

Mostly cloudy, then gradually becoming sunny, with a high near 61. Southwest wind 16 to 21 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 28 mph.

Tonight

A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 43. Southwest wind 6 to 9 mph becoming northwest in the evening.

Friday

Sunny, with a high near 58. West wind 6 to 11 mph becoming north in the morning.

Friday Night

Mostly clear, with a low around 39. Northeast wind 5 to 9 mph becoming light and variable after midnight.

Saturday

Sunny, with a high near 60. Southeast wind 5 to 10 mph becoming north in the morning.

Saturday Night

Mostly clear, with a low around 41.

Sunday

Sunny, with a high near 61.