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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Clear

75°F

24°C

Humidity 25%
Wind Speed NNW 12 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 17 Jun 11:05 AM PDT
Extended Forecast for

Lewiston ID

  • Today

    Today: Sunny, with a high near 84. Northwest wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57. North wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 94. Light and variable wind.

    High: 94 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 84. Northwest wind 8 to 10 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 54. Northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 57. North wind around 5 mph becoming calm in the evening.
Juneteenth
Mostly sunny, with a high near 94. Light and variable wind.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 87.
Sunday Night
Clear, with a low around 55.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny and hot, with a high near 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.39°N 116.97°W (Elev. 1407 ft)
Last Update:
9:41 am PDT Jun 17, 2026
Forecast Valid:
11am PDT Jun 17, 2026-6pm PDT Jun 23, 2026
 
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