Lewiston, WI Weather Forecast
Local 7-day forecast
Areas Of Smoke then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Lewiston, WI in one place.
Areas of smoke and a chance of rain showers before 8am, then a slight chance of showers and thunderstorms between 1pm and 4pm. Mostly sunny, with a high near 91. Heat index values as high as 96. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Lewiston, WI 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 9:47 AM CDT.
The active forecast window currently covers Jul 17 to Jul 23, 2026 for Lewiston, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 9:47 AM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Lewiston
Today looks like the warmest upcoming period in Lewiston at 91 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Monday at about 5 to 15 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 9:47 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- MKX
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 73. Heat index values as high as 95. Southwest wind 5 to 10 mph.
Sunny, with a high near 88. Northwest wind around 10 mph.
Mostly clear, with a low around 61. Northeast wind 0 to 10 mph.
Mostly sunny, with a high near 86. Southeast wind 0 to 5 mph.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 66. South wind 0 to 5 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 7am, then showers and thunderstorms likely between 7am and 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind 5 to 15 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. West wind 10 to 15 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Mostly clear, with a low around 57.
Sunny, with a high near 78.
Mostly clear, with a low around 56.
Sunny, with a high near 80.
Partly cloudy, with a low around 58.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 17
|
Areas Of Smoke then Slight Chance Showers And Thunderstorms
|
91°F |
5 to 10 mph
SW
|
|
Tonight
Jul 17
|
Partly Cloudy
|
73°F |
5 to 10 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
88°F |
10 mph
NW
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
61°F |
0 to 10 mph
NE
|
|
Sunday
Jul 19
|
Mostly Sunny
|
86°F |
0 to 5 mph
SE
|
|
Sunday Night
Jul 19
|
Partly Cloudy then Slight Chance Rain Showers
|
66°F |
0 to 5 mph
S
|
|
Monday
Jul 20
|
Showers And Thunderstorms Likely
|
88°F |
5 to 15 mph
SW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
67°F |
10 to 15 mph
W
|
|
Tuesday
Jul 21
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
81°F |
10 to 15 mph
NW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
57°F |
5 to 15 mph
N
|
|
Wednesday
Jul 22
|
Sunny
|
78°F |
5 mph
NW
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
56°F |
0 to 5 mph
NW
|
|
Thursday
Jul 23
|
Sunny
|
80°F |
0 to 5 mph
W
|
|
Thursday Night
Jul 23
|
Partly Cloudy
|
58°F |
0 to 5 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lewiston.