Marion, WI Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Marion, WI in one place.
A slight chance of showers and thunderstorms. Partly sunny, with a high near 83. Heat index values as high as 82. Southwest wind 2 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Marion, 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: May 24, 2026 1:08 PM CDT.
The active forecast window currently covers May 25 to May 30, 2026 for Marion, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 25 to May 30, 2026
- Latest sync
- May 24, 2026 1:08 PM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Marion
Tuesday looks like the warmest upcoming period in Marion at 89 degrees F.
Thursday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Memorial Day at about 2 to 10 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- May 24, 2026 1:08 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- GRB
- Radar station
- KGRB
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 61. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.
Sunny, with a high near 89. West southwest wind 3 to 7 mph.
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Sunny, with a high near 81.
Mostly clear, with a low around 52.
Mostly sunny, with a high near 79.
Mostly clear, with a low around 52.
Sunny, with a high near 78.
Mostly clear, with a low around 53.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Memorial Day
May 25
|
Slight Chance Showers And Thunderstorms
|
83°F |
2 to 10 mph
SW
|
|
Monday Night
May 25
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
61°F |
3 to 8 mph
SW
|
|
Tuesday
May 26
|
Sunny
|
89°F |
3 to 7 mph
WSW
|
|
Tuesday Night
May 26
|
Slight Chance Showers And Thunderstorms
|
61°F |
1 to 5 mph
WNW
|
|
Wednesday
May 27
|
Chance Showers And Thunderstorms
|
86°F |
1 to 8 mph
NE
|
|
Wednesday Night
May 27
|
Chance Showers And Thunderstorms then Partly Cloudy
|
55°F |
5 to 8 mph
ENE
|
|
Thursday
May 28
|
Sunny
|
81°F |
7 mph
ENE
|
|
Thursday Night
May 28
|
Mostly Clear
|
52°F |
2 to 7 mph
ENE
|
|
Friday
May 29
|
Mostly Sunny
|
79°F |
3 to 8 mph
ENE
|
|
Friday Night
May 29
|
Mostly Clear
|
52°F |
2 to 8 mph
ENE
|
|
Saturday
May 30
|
Sunny
|
78°F |
3 to 7 mph
ENE
|
|
Saturday Night
May 30
|
Mostly Clear
|
53°F |
1 to 7 mph
ENE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marion.