Lewiston, UT Weather Forecast
Local 7-day forecast
Mostly Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Lewiston, UT in one place.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 92. West northwest wind 1 to 6 mph. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Lewiston, UT is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 17, 2026 7:47 AM MDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for Lewiston, UT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 7:47 AM MDT
- Forecast office
- SLC
- Source
- NOAA / NWS
Daily Outlook
This Week in Lewiston
Monday looks like the warmest upcoming period in Lewiston at 95 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Saturday at about 1 to 6 mph WNW.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 7:47 AM MDT
- Coverage
- 6 days
- Time zone
- America/Denver
- Forecast office
- SLC
- Radar station
- KMTX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and midnight. Partly cloudy, with a low around 56. East wind 1 to 5 mph. Chance of precipitation is 30%.
Sunny, with a high near 94.
Partly cloudy, with a low around 57.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
A slight chance of rain showers before noon, then showers and thunderstorms likely. Partly sunny, with a high near 90.
A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
A slight chance of rain showers before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 88.
A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
A chance of rain showers before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 88.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Mostly Sunny then Chance Showers And Thunderstorms
|
92°F |
1 to 6 mph
WNW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms then Partly Cloudy
|
56°F |
1 to 5 mph
E
|
|
Sunday
Jul 19
|
Sunny
|
94°F |
1 to 5 mph
NNW
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
57°F |
5 mph
ENE
|
|
Monday
Jul 20
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
95°F |
1 to 6 mph
WSW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
58°F |
2 to 6 mph
SE
|
|
Tuesday
Jul 21
|
Showers And Thunderstorms Likely
|
90°F |
5 mph
NNE
|
|
Tuesday Night
Jul 21
|
Chance Showers And Thunderstorms
|
56°F |
5 mph
E
|
|
Wednesday
Jul 22
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
88°F |
3 mph
SSW
|
|
Wednesday Night
Jul 22
|
Chance Showers And Thunderstorms
|
55°F |
3 mph
SE
|
|
Thursday
Jul 23
|
Chance Rain Showers
|
88°F |
3 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lewiston.
