NWS Forecast for Lewiston ID

National Weather Service Forecast for: Lewiston ID
Issued by: National Weather Service Spokane, WA

Updated: 8:31 pm PST Feb 1, 2026

Tonight Partly Cloudy then Patchy Fog	Monday Areas Fog then Slight Chance Rain	Monday Night Mostly Cloudy	Tuesday Partly Sunny	Tuesday Night Mostly Cloudy	Wednesday Partly Sunny	Wednesday Night Partly Cloudy	Thursday Sunny	Thursday Night Partly Cloudy
Lo 37 °F	Hi 50 °F	Lo 40 °F	Hi 58 °F	Lo 39 °F	Hi 58 °F	Lo 38 °F	Hi 57 °F	Lo 38 °F

Tonight	Patchy fog after 1am. Otherwise, partly cloudy, with a low around 37. West wind around 6 mph becoming calm in the evening.
Monday	A 20 percent chance of rain after 1pm. Areas of fog before 10am. Otherwise, partly sunny, with a high near 50. Light east wind.
Monday Night	Mostly cloudy, with a low around 40. Calm wind.
Tuesday	Partly sunny, with a high near 58. Light east wind.
Tuesday Night	Mostly cloudy, with a low around 39. Light east wind.
Wednesday	Partly sunny, with a high near 58.
Wednesday Night	Partly cloudy, with a low around 38.
Thursday	Sunny, with a high near 57.
Thursday Night	Partly cloudy, with a low around 38.
Friday	Mostly sunny, with a high near 56.
Friday Night	Partly cloudy, with a low around 39.
Saturday	Partly sunny, with a high near 56.
Saturday Night	A 20 percent chance of rain. Mostly cloudy, with a low around 42.
Sunday	A 40 percent chance of rain. Mostly cloudy, with a high near 57.

Forecast from NOAA-NWS for Lewiston ID.