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

Heavy to Excessive Rainfall for the Southwest U.S.; Watching for Possible East Coast Storm

Thunderstorms and a chance for some isolated flash flooding will continue today in the Southwest U.S. before an influx of tropical moisture from Priscilla brings widespread heavy rainfall and a flash flooding threat late this week into this weekend. A coastal storm may develop off the southeast U.S. coast Friday night and drift north just off the Mid-Atlantic coast through the weekend. Read More >

Current conditions at

Tri-Cities Airport (KPSC)

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

Clear

68°F

20°C

Humidity 38%
Wind Speed N 0 MPH
Barometer 29.74 in (1007.11 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 08 Oct 11:53 AM PDT
Extended Forecast for

3 Miles ESE Grandview WA

  • This Afternoon

    This Afternoon: Sunny, with a high near 74. Light and variable wind becoming southwest around 5 mph.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 42. West wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 42 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before 11am. Sunny, with a high near 72. Light northwest wind.

    High: 72 °F

    Slight Chance
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 46. Light west wind.

    Low: 46 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly before 11am. Partly sunny, with a high near 70. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 70 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly after 11pm. Partly cloudy, with a low around 40.

    Low: 40 °F

    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers. Mostly sunny, with a high near 62.

    High: 62 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers. Partly cloudy, with a low around 37.

    Low: 37 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers. Mostly sunny, with a high near 58.

    High: 58 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 74. Light and variable wind becoming southwest around 5 mph.
Tonight
A slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 42. West wind 3 to 5 mph. Chance of precipitation is 20%.
Thursday
A 20 percent chance of showers before 11am. Sunny, with a high near 72. Light northwest wind.
Thursday Night
A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 46. Light west wind.
Friday
A 30 percent chance of showers, mainly before 11am. Partly sunny, with a high near 70. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Friday Night
A 30 percent chance of showers, mainly after 11pm. Partly cloudy, with a low around 40.
Saturday
A 40 percent chance of showers. Mostly sunny, with a high near 62.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 37.
Sunday
A 40 percent chance of showers. Mostly sunny, with a high near 58.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 37.
Columbus Day
A chance of showers. Partly sunny, with a high near 56.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 35.
Tuesday
Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Grandview WA
 46.24°N 119.85°W (Elev. 817 ft)
Last Update:
10:15 am PDT Oct 8, 2025
Forecast Valid:
12pm PDT Oct 8, 2025-6pm PDT Oct 14, 2025
 
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