Marion, WI Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Marion, WI in one place.
A chance of rain showers. Partly sunny, with a high near 79. Heat index values as high as 77. South southwest wind 2 to 9 mph. Chance of precipitation is 40%.
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: Aug 27, 2026 11:18 PM CDT.
The active forecast window currently covers Aug 29 to Sep 3, 2026 for Marion, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 3, 2026
- Latest sync
- Aug 27, 2026 11:18 PM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Marion
Monday looks like the warmest upcoming period in Marion at 87 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Saturday at about 2 to 9 mph SSW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 11:18 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 chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South wind 5 to 8 mph. Chance of precipitation is 40%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Chance of precipitation is 30%.
A chance of rain showers after 7pm. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
A chance of rain showers before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
A chance of rain showers after 7pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Chance Rain Showers
|
79°F |
2 to 9 mph
SSW
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms
|
64°F |
5 to 8 mph
S
|
|
Sunday
Aug 30
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
84°F |
5 to 8 mph
S
|
|
Sunday Night
Aug 30
|
Chance Showers And Thunderstorms
|
68°F |
3 to 7 mph
SSE
|
|
Monday
Aug 31
|
Chance Showers And Thunderstorms
|
87°F |
6 to 9 mph
SSW
|
|
Monday Night
Aug 31
|
Chance Rain Showers
|
66°F |
2 to 7 mph
WNW
|
|
Tuesday
Sep 1
|
Slight Chance Showers And Thunderstorms
|
85°F |
2 to 7 mph
W
|
|
Tuesday Night
Sep 1
|
Chance Rain Showers
|
63°F |
1 to 6 mph
WSW
|
|
Wednesday
Sep 2
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
84°F |
1 to 6 mph
WNW
|
|
Wednesday Night
Sep 2
|
Slight Chance Showers And Thunderstorms
|
61°F |
1 to 5 mph
NE
|
|
Thursday
Sep 3
|
Slight Chance Showers And Thunderstorms
|
83°F |
2 to 7 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marion.