| NWS Forecast for: Lewiston Area Issued by: National Weather Service Spokane, WA Last Update: 319 PM PDT Wed May 20 2026 | |
| Tonight: Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower to mid 40s. Chance of precipitation 30 percent. Rainfall amounts less than a tenth of an inch, except higher amounts possible in thunderstorms. Thursday: Sunny. Highs in the upper 60s to mid 70s. Thursday Night: Mostly cloudy. Lows in the mid to upper 40s. Friday: Sunny, warmer. Highs in the lower 70s to lower 80s. Friday Night: Mostly clear. Lows in the mid 40s to lower 50s. Saturday Through Sunday Night: Partly cloudy. Highs in the mid 70s to mid 80s. Lows in the upper 40s to mid 50s. Memorial Day: Mostly cloudy with a 20 percent chance of rain showers. Highs in the upper 60s to mid 70s. Monday Night And Tuesday: Mostly cloudy with a 50 percent chance of rain showers. Lows in the mid to upper 40s. Highs in the upper 50s to mid 60s. Tuesday Night And Wednesday: Mostly cloudy with a 40 percent chance of rain showers. Lows in the mid 40s. Highs in the mid 60s to lower 70s. | |
| Zone Forecast: Lewiston Area | |
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