Weather forecast for: Lewiston ID
Last Update: 2:06 am PDT Sep 18, 2026
Overnight: Mostly clear, with a low around 56. West wind around 5 mph becoming light and variable.
Friday: A 20 percent chance of showers before 11am. Sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night: Partly cloudy, with a low around 56. Northwest wind around 5 mph becoming calm in the evening.
Saturday: Sunny, with a high near 83. Light and variable wind.
Saturday Night: Mostly clear, with a low around 57. Light and variable wind.
Sunday: Sunny, with a high near 87.
Sunday Night: Clear, with a low around 58.
Monday: Sunny, with a high near 88.
Monday Night: Mostly clear, with a low around 58.
Tuesday: Sunny, with a high near 84.
Tuesday Night: Partly cloudy, with a low around 57.
Wednesday: Sunny, with a high near 82.
Wednesday Night: Partly cloudy, with a low around 56.
Thursday: Mostly sunny, with a high near 86.