Lewiston, UT Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Lewiston, UT in one place.
Showers and thunderstorms likely before noon, then a chance of showers and thunderstorms. Mostly cloudy. High near 80, with temperatures falling to around 78 in the afternoon. West wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
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: Sep 17, 2026 12:05 AM MDT.
The active forecast window currently covers Sep 17 to Sep 23, 2026 for Lewiston, UT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 17 to Sep 23, 2026
- Latest sync
- Sep 17, 2026 12:05 AM MDT
- Forecast office
- SLC
- Source
- NOAA / NWS
Daily Outlook
This Week in Lewiston
Tuesday looks like the warmest upcoming period in Lewiston at 81 degrees F.
Saturday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Friday at about 2 to 6 mph S.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 17, 2026 12:05 AM MDT
- Coverage
- 7 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
Showers and thunderstorms likely before midnight, then a slight chance of showers and thunderstorms between midnight and 3am, then showers and thunderstorms likely. Mostly cloudy. Low around 47, with temperatures rising to around 53 overnight. East wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a high near 76. South wind 2 to 6 mph. Chance of precipitation is 80%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 40. North wind 1 to 5 mph. Chance of precipitation is 60%.
A chance of rain showers before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 71. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 37.
Sunny, with a high near 76.
Mostly clear, with a low around 39.
Sunny, with a high near 79.
Mostly clear, with a low around 41.
Sunny, with a high near 81.
Mostly clear, with a low around 42.
Sunny, with a high near 81.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Sep 17
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
80°F |
5 mph
W
|
|
Thursday Night
Sep 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
47°F |
5 mph
E
|
|
Friday
Sep 18
|
Showers And Thunderstorms
|
76°F |
2 to 6 mph
S
|
|
Friday Night
Sep 18
|
Showers And Thunderstorms Likely
|
40°F |
1 to 5 mph
N
|
|
Saturday
Sep 19
|
Chance Rain Showers
|
71°F |
3 mph
NNW
|
|
Saturday Night
Sep 19
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
37°F |
0 to 3 mph
NE
|
|
Sunday
Sep 20
|
Sunny
|
76°F |
2 mph
NNW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
39°F |
2 mph
ENE
|
|
Monday
Sep 21
|
Sunny
|
79°F |
2 mph
NNW
|
|
Monday Night
Sep 21
|
Mostly Clear
|
41°F |
2 mph
E
|
|
Tuesday
Sep 22
|
Sunny
|
81°F |
2 mph
NW
|
|
Tuesday Night
Sep 22
|
Mostly Clear
|
42°F |
2 mph
ENE
|
|
Wednesday
Sep 23
|
Sunny
|
81°F |
2 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lewiston.
