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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Clear

77°F

25°C

Humidity 38%
Wind Speed N 3 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 19 Sep 01:56 PM PDT
Extended Forecast for

Clarkston WA

  • This Afternoon

    This Afternoon: Sunny, with a high near 83. Calm wind.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88. Calm wind becoming east around 5 mph.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 90. East wind around 5 mph becoming calm in the afternoon.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 83. Calm wind.
Tonight
Mostly clear, with a low around 56. Calm wind.
Sunday
Sunny, with a high near 88. Calm wind becoming east around 5 mph.
Sunday Night
Mostly clear, with a low around 58. Calm wind.
Monday
Sunny, with a high near 90. East wind around 5 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 77.
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:
11:31 am PDT Sep 19, 2026
Forecast Valid:
2pm PDT Sep 19, 2026-6pm PDT Sep 25, 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