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

Heavy Rain Across the Southern US; Unsettled Pattern in the Pacific Northwest

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains Friday, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. High elevation snow and mixed precipitation and rain in the lower elevations will impact the Pacific Northwest this weekend before a stronger system moves in early next week. Read More >

Current conditions at

Lewiston, Lewiston-Nez Perce County Airport (KLWS)

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

Clear

37°F

3°C

Humidity 86%
Wind Speed N 0 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 12 Feb 09:00 PM PST
Extended Forecast for

Lewiston ID

  • Tonight

    Tonight: Partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 50. Light and variable wind.

    High: 50 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly after 10pm. Cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Chance Rain

  • Saturday

    Saturday: A 40 percent chance of rain. Cloudy, with a high near 50. Calm wind becoming east around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly before 4am. Cloudy, with a low around 40. Light and variable wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain Likely

  • Sunday

    Sunday: A 40 percent chance of rain, mainly before 10am. Mostly cloudy, with a high near 49.

    High: 49 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Slight Chance
    Rain

  • Washington's Birthday

    Washington's Birthday: A 40 percent chance of rain. Mostly cloudy, with a high near 50.

    High: 50 °F

    Chance Rain

  • Monday Night

    Monday Night: Rain likely, mainly after 10pm. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.

    Low: 36 °F

    Rain Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 33. Calm wind.
Friday
Increasing clouds, with a high near 50. Light and variable wind.
Friday Night
A 30 percent chance of rain, mainly after 10pm. Cloudy, with a low around 40. Calm wind.
Saturday
A 40 percent chance of rain. Cloudy, with a high near 50. Calm wind becoming east around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain likely, mainly before 4am. Cloudy, with a low around 40. Light and variable wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A 40 percent chance of rain, mainly before 10am. Mostly cloudy, with a high near 49.
Sunday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 37.
Washington's Birthday
A 40 percent chance of rain. Mostly cloudy, with a high near 50.
Monday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Tuesday
Rain likely before 10am, then a chance of rain and snow. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 44. Chance of precipitation is 40%.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 50%.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 43. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewiston ID
 46.37°N 116.99°W (Elev. 1204 ft)
Last Update:
1:12 pm PST Feb 12, 2026
Forecast Valid:
9pm PST Feb 12, 2026-6pm PST Feb 19, 2026
 
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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