Showers and Thunderstorms from the Great Lakes into the Southern Plains

Frontal boundary and wave of low pressure will keep an active weather pattern from the Great Lakes region through the southern Plains the next couple of days. Isolated instances of severe thunderstorms and flash flooding are possible. Meanwhile, as summer comes to a close, above normal temperatures continue for central and eastern U.S. - especially for most of Puerto Rico with excessive heat. Read More >

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Partly Cloudy

70°F

21°C

Humidity 49%
Wind Speed ENE 4 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 21 Sep 01:56 PM PDT
Extended Forecast for

Lewiston ID

  • This Afternoon

    This Afternoon: A 40 percent chance of showers, mainly before 5pm.  Mostly cloudy, with a high near 74. West wind around 16 mph, with gusts as high as 25 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm.  Mostly clear, with a low around 49. West wind 5 to 13 mph becoming south after midnight. Winds could gust as high as 21 mph.

    Low: 49 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: Widespread haze before 11am, then widespread haze after 4pm. Areas of smoke between 11am and 4pm. Sunny, with a high near 74. Light and variable wind.

    High: 74 °F

    Haze

  • Monday Night

    Monday Night: Clear, with a low around 49. Light and variable wind becoming east around 6 mph in the evening.

    Low: 49 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. East wind 3 to 6 mph.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 53.

    Low: 53 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers, mainly before 5pm. Mostly cloudy, with a high near 74. West wind around 16 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 20 percent chance of showers before 8pm. Mostly clear, with a low around 49. West wind 5 to 13 mph becoming south after midnight. Winds could gust as high as 21 mph.
Monday
Widespread haze before 11am, then widespread haze after 4pm. Areas of smoke between 11am and 4pm. Sunny, with a high near 74. Light and variable wind.
Monday Night
Clear, with a low around 49. Light and variable wind becoming east around 6 mph in the evening.
Tuesday
Sunny, with a high near 83. East wind 3 to 6 mph.
Tuesday Night
Clear, with a low around 53.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 54.
Saturday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.39°N 116.97°W (Elev. 1407 ft)
10:52 am PDT Sep 21, 2025
2pm PDT Sep 21, 2025-6pm PDT Sep 27, 2025
 
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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