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

Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Clear

93°F

34°C

Humidity 18%
Wind Speed N 6 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 29 Aug 03:35 PM PDT
Extended Forecast for

Lewiston ID

  • Tonight

    Tonight: Partly cloudy, with a low around 66. Northwest wind around 6 mph becoming southeast after midnight.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: Widespread haze after 2pm. Sunny and hot, with a high near 99. East wind 3 to 5 mph.

    High: 99 °F

    Sunny then
    Haze

  • Saturday Night

    Saturday Night: Widespread haze. Partly cloudy, with a low around 68. East wind around 6 mph.

    Low: 68 °F

    Haze

  • Sunday

    Sunday: Widespread haze before noon. Sunny and hot, with a high near 103. East wind around 6 mph.

    High: 103 °F

    Haze then
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68. East wind around 7 mph.

    Low: 68 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Sunny and hot, with a high near 103.

    High: 103 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 104.

    High: 104 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 66. Northwest wind around 6 mph becoming southeast after midnight.
Saturday
Widespread haze after 2pm. Sunny and hot, with a high near 99. East wind 3 to 5 mph.
Saturday Night
Widespread haze. Partly cloudy, with a low around 68. East wind around 6 mph.
Sunday
Widespread haze before noon. Sunny and hot, with a high near 103. East wind around 6 mph.
Sunday Night
Partly cloudy, with a low around 68. East wind around 7 mph.
Labor Day
Sunny and hot, with a high near 103.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Sunny and hot, with a high near 104.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Sunny and hot, with a high near 104.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Sunny and hot, with a high near 102.
Thursday Night
Partly cloudy, with a low around 68.
Friday
Mostly sunny and hot, with a high near 101.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.41°N 117°W (Elev. 945 ft)
Last Update:
3:32 pm PDT Aug 29, 2025
Forecast Valid:
3pm PDT Aug 29, 2025-6pm PDT Sep 5, 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