Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Clear

61°F

16°C

Humidity 53%
Wind Speed N 4 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 04 Sep 10:56 AM PDT
Extended Forecast for

Lewiston ID

  • Today

    Today: Sunny, with a high near 73. Calm wind.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers before 11pm.  Partly cloudy, with a low around 52. Light and variable wind.

    Low: 52 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 11pm.  Mostly cloudy, with a low around 53. West wind around 6 mph becoming calm  in the evening.

    Low: 53 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 77. Light and variable wind.

    High: 77 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm, then showers likely after 11pm.  Mostly cloudy, with a low around 56. Chance of precipitation is 70%.

    Low: 56 °F

    Showers
    Likely

  • Labor Day

    Labor Day: Showers likely, mainly before 11am.  Mostly cloudy, with a high near 74. Chance of precipitation is 70%.

    High: 74 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 20 percent chance of showers before 11pm.  Partly cloudy, with a low around 54.

    Low: 54 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 73. Calm wind.
Tonight
A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 52. Light and variable wind.
Saturday
A slight chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 77. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
A 20 percent chance of showers before 11pm. Mostly cloudy, with a low around 53. West wind around 6 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 77. Light and variable wind.
Sunday Night
A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm, then showers likely after 11pm. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Labor Day
Showers likely, mainly before 11am. Mostly cloudy, with a high near 74. Chance of precipitation is 70%.
Monday Night
A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.43°N 117.01°W (Elev. 784 ft)
9:47 am PDT Sep 4, 2026
11am PDT Sep 4, 2026-6pm PDT Sep 10, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database