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Lewiston, UT Weather Forecast
Lewiston, UT Weather Forecast Date: 1243 PM MDT Sat Sep 19 2026
The area/counties/county of: Cache Valley/Utah Portion, including: Logan and Smithfield.or toggle through each period.
Tonight... Mostly clear. A 20% chance of showers and thunderstorms in the evening. Lows in the mid 30s.
Sunday... Sunny. Highs in the lower 70s.
Sunday Night... Mostly clear. Lows in the upper 30s.
Monday... Sunny. Highs in the upper 70s.
Monday Night... Mostly clear in the evening then becoming mostly cloudy. Lows in the lower 40s.
Tuesday... Partly sunny in the morning, then partly cloudy with a 10% chance of showers and thunderstorms in the afternoon. Highs in the upper 70s.
Tuesday Night... Mostly cloudy with a chance of rain showers. Lows in the lower 40s. Chance of showers 30%.
Wednesday... Mostly clear. Highs around 80. Lows in the mid 40s.
Thursday... Mostly clear. Highs around 80. Lows in the mid 40s.
Friday... Mostly clear. Highs around 80. Lows in the mid 40s.
Friday Night... Partly cloudy. Lows in the upper 40s. Highs around 80.
POP = Probability of Precipitation
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