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

Hazardous Weather Conditions

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

Lat: 46.37472°NLon: 117.01444°WElev: 1437.0ft.

Partly Cloudy

90°F

32°C

Humidity 23%
Wind Speed WNW 9 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 22 Aug 01:56 PM PDT
Extended Forecast for

Clarkston WA

Heat Advisory August 22, 02:03pm until August 22, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 22, 02:03pm until August 22, 07:00pm

    NOW until 7:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 99 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 63. West wind 5 to 10 mph becoming light northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 90. Light northwest wind increasing to 9 to 14 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. Northwest wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 26 mph.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 96. Light east wind.

    High: 96 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 102.

    High: 102 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A slight chance of thunderstorms after 5pm. Partly sunny and hot, with a steady temperature around 99. Northwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 10%.
Tonight
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 63. West wind 5 to 10 mph becoming light northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 90. Light northwest wind increasing to 9 to 14 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Mostly clear, with a low around 59. Northwest wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 26 mph.
Monday
Sunny and hot, with a high near 96. Light east wind.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny and hot, with a high near 102.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 90.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clarkston WA
 46.42°N 117.04°W (Elev. 761 ft)
Last Update:
11:56 am PDT Aug 22, 2026
Forecast Valid:
2pm PDT Aug 22, 2026-6pm PDT Aug 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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