National Weather Service Forecast for: Lewiston ID
Issued by: National Weather Service Spokane, WA
Updated: 2:06 am PDT Jun 22, 2026
 
Overnight

Overnight: Mostly clear, with a low around 58. Light east wind.
Mostly Clear
Monday

Monday: Sunny, with a high near 93. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Sunny
Monday
Night
Monday Night: Mostly clear, with a low around 58. North wind 3 to 7 mph.
Mostly Clear
Tuesday

Tuesday: Increasing clouds, with a high near 94. Light northeast wind.
Increasing
Clouds
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 60. Northwest wind around 6 mph becoming calm  in the evening.
Partly Cloudy
Wednesday

Wednesday: Sunny and hot, with a high near 97.
Hot
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 63.
Partly Cloudy
Thursday

Thursday: Mostly sunny and hot, with a high near 96.
Hot
Thursday
Night
Thursday Night: A 20 percent chance of showers after 11pm.  Mostly cloudy, with a low around 60.
Slight Chance
Showers
Lo 58 °F Hi 93 °F Lo 58 °F Hi 94 °F Lo 60 °F Hi 97 °F Lo 63 °F Hi 96 °F Lo 60 °F

 

Overnight
 
Mostly clear, with a low around 58. Light east wind.
Monday
 
Sunny, with a high near 93. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Monday Night
 
Mostly clear, with a low around 58. North wind 3 to 7 mph.
Tuesday
 
Increasing clouds, with a high near 94. Light northeast wind.
Tuesday Night
 
Partly cloudy, with a low around 60. Northwest wind around 6 mph becoming calm in the evening.
Wednesday
 
Sunny and hot, with a high near 97.
Wednesday Night
 
Partly cloudy, with a low around 63.
Thursday
 
Mostly sunny and hot, with a high near 96.
Thursday Night
 
A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 60.
Friday
 
Showers likely. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
Friday Night
 
A 40 percent chance of showers. Mostly cloudy, with a low around 56.
Saturday
 
A 30 percent chance of showers. Partly sunny, with a high near 75. Breezy.
Saturday Night
 
A 20 percent chance of showers. Mostly cloudy, with a low around 52. Breezy.
Sunday
 
A 30 percent chance of showers. Partly sunny, with a high near 75.

 

Forecast from NOAA-NWS for Lewiston ID.