National Weather Service Forecast for: Lewiston ID
Issued by: National Weather Service Spokane, WA
Updated: 8:41 am PDT Jul 10, 2026
 
Today

Today: Sunny and hot, with a high near 100. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Hot
 Tonight

Tonight: Mostly clear, with a low around 63. Northwest wind 5 to 7 mph becoming calm in the evening.
Mostly Clear
 Saturday

Saturday: Sunny and hot, with a high near 98. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Hot
 Saturday
Night
Saturday Night: Increasing clouds, with a low around 65. Northwest wind 5 to 9 mph becoming light after midnight.
Increasing
Clouds
 Sunday

Sunday: Partly sunny, with a high near 92. Calm wind becoming north around 6 mph in the afternoon.
Partly Sunny
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 63.
Partly Cloudy
 Monday

Monday: Mostly sunny and hot, with a high near 99.
Hot
 Monday
Night
Monday Night: Mostly cloudy, with a low around 67.
Mostly Cloudy
 Tuesday

Tuesday: Partly sunny and hot, with a high near 99.
Hot
Hi 100 °F Lo 63 °F Hi 98 °F Lo 65 °F Hi 92 °F Lo 63 °F Hi 99 °F Lo 67 °F Hi 99 °F

 

Today
 
 Sunny and hot, with a high near 100. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tonight
 
 Mostly clear, with a low around 63. Northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
 
 Sunny and hot, with a high near 98. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Saturday Night
 
 Increasing clouds, with a low around 65. Northwest wind 5 to 9 mph becoming light after midnight.
Sunday
 
 Partly sunny, with a high near 92. Calm wind becoming north around 6 mph in the afternoon.
Sunday Night
 
 Partly cloudy, with a low around 63.
Monday
 
 Mostly sunny and hot, with a high near 99.
Monday Night
 
 Mostly cloudy, with a low around 67.
Tuesday
 
 Partly sunny and hot, with a high near 99.
Tuesday Night
 
 Partly cloudy, with a low around 65.
Wednesday
 
 Sunny and hot, with a high near 101.
Wednesday Night
 
 Mostly clear, with a low around 66.
Thursday
 
 Sunny and hot, with a high near 101.

 

Forecast from NOAA-NWS for Lewiston ID.