Marathon, WI Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Marathon, WI in one place.
Partly sunny, with a high near 86. Heat index values as high as 88. Northeast wind around 3 mph. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Marathon, 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: Jun 8, 2026 8:17 AM CDT.
The active forecast window currently covers Jun 9 to Jun 14, 2026 for Marathon, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 14, 2026
- Latest sync
- Jun 8, 2026 8:17 AM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Marathon
Wednesday looks like the warmest upcoming period in Marathon at 89 degrees F.
Sunday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Friday at about 9 to 20 mph W.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 8:17 AM 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 showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Southeast wind 3 to 9 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 1pm, then showers and thunderstorms. Partly sunny, with a high near 89. South wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 90%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 54. Chance of precipitation is 40%.
A slight chance of rain showers before 7am. Sunny, with a high near 79. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
A slight chance of rain showers. Mostly sunny, with a high near 72. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 50. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jun 9
|
Partly Sunny
|
86°F |
3 mph
NE
|
|
Tuesday Night
Jun 9
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
62°F |
3 to 9 mph
SE
|
|
Wednesday
Jun 10
|
Chance Showers And Thunderstorms
|
89°F |
10 to 17 mph
S
|
|
Wednesday Night
Jun 10
|
Showers And Thunderstorms
|
60°F |
8 to 17 mph
SW
|
|
Thursday
Jun 11
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
81°F |
8 to 15 mph
WSW
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms
|
54°F |
8 to 13 mph
W
|
|
Friday
Jun 12
|
Slight Chance Rain Showers then Sunny
|
79°F |
9 to 20 mph
W
|
|
Friday Night
Jun 12
|
Slight Chance Showers And Thunderstorms
|
55°F |
7 to 14 mph
WSW
|
|
Saturday
Jun 13
|
Chance Showers And Thunderstorms
|
76°F |
8 to 13 mph
W
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
52°F |
5 to 9 mph
NW
|
|
Sunday
Jun 14
|
Slight Chance Rain Showers
|
72°F |
6 to 10 mph
NW
|
|
Sunday Night
Jun 14
|
Slight Chance Rain Showers then Partly Cloudy
|
50°F |
3 to 9 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marathon.
