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

Tri-Cities Airport (KPSC)

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

Clear

45°F

7°C

Humidity 93%
Wind Speed N 4 MPH
Barometer 29.68 in (1005.08 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 21 Apr 03:35 AM PDT
Extended Forecast for

4 Miles S Richland WA

  • Overnight

    Overnight: Mostly cloudy, with a low around 53. Light southwest wind.

    Low: 53 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 78. Southwest wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 78 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then rain likely after 2am. Cloudy, with a low around 51. Southwest wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 51 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Rain. High near 63. Southwest wind 16 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 63 °F

    Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain. Partly cloudy, with a low around 45. West wind 13 to 20 mph, with gusts as high as 30 mph.

    Low: 45 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A 20 percent chance of rain before 11am. Mostly sunny, with a high near 66.

    High: 66 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 53. Light southwest wind.
Tuesday
A 30 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 78. Southwest wind 5 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
A chance of rain and thunderstorms before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then rain likely after 2am. Cloudy, with a low around 51. Southwest wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Rain. High near 63. Southwest wind 16 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night
A 20 percent chance of rain. Partly cloudy, with a low around 45. West wind 13 to 20 mph, with gusts as high as 30 mph.
Thursday
A 20 percent chance of rain before 11am. Mostly sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 72.
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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:
11:46 pm PDT Apr 20, 2026
Forecast Valid:
3am PDT Apr 21, 2026-6pm PDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

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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