Lewiston, UT 7-Day Weather Forecast
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Lewiston Weather Forecast


Lewiston, UT Weather Forecast Date: 1243 PM MDT Sun Sep 20 2026
Weather forecast for Lewiston, UT
| Tonight Lo: 39°F Lo: 4°C |
Tonight... Mostly clear. Lows in the upper 30s. |
| Mon Hi: 79°FHi: 26°C Lo: 41°F Lo: 5°C |
Monday... Sunny in the morning then becoming partly cloudy. Highs in the upper 70s. |
| Tue Hi: 75°FHi: 24°C Lo: 40°F Lo: 4°C |
Tuesday... A chance of rain showers and a slight chance of thunderstorms in the afternoon. Partly sunny. Highs in the mid 70s. Chance of precipitation 30%. |
| Wed Hi: 79°FHi: 26°C Lo: 41°F Lo: 5°C |
Wednesday... Sunny. Highs in the upper 70s. |
| Thu Hi: 81°FHi: 27°C Lo: 49°F Lo: 9°C |
Thursday... Mostly clear. Lows in the lower 40s. Highs in the lower 80s. |
| Fri Hi: 81°FHi: 27°C Lo: 45°F Lo: 7°C |
Friday... Partly cloudy in the morning then becoming sunny. Highs in the lower 80s. |
| Sat Hi: 80°FHi: 27°C Lo: 45°F Lo: 7°C |
Saturday... Partly cloudy in the morning then clearing. Highs around 80. |
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