Marathon, WI Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Marathon, WI in one place.
Sunny, with a high near 69.
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: Apr 20, 2026 2:30 AM CDT.
The active forecast window currently covers Apr 22 to Apr 26, 2026 for Marathon, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22 to Apr 26, 2026
- Latest sync
- Apr 20, 2026 2:30 AM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Marathon
Thursday looks like the warmest upcoming period in Marathon at 73 degrees F.
Saturday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Thursday at about 10 to 21 mph S.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 20, 2026 2:30 AM CDT
- Coverage
- 5 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
Partly cloudy, with a low around 53.
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 73. Chance of precipitation is 30%.
Showers and thunderstorms. Mostly cloudy, with a low around 51. Chance of precipitation is 80%.
A chance of rain showers. Partly sunny, with a high near 60. Chance of precipitation is 50%.
A chance of rain showers before 1am. Partly cloudy, with a low around 38. Chance of precipitation is 30%.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 56. Chance of precipitation is 20%.
A slight chance of rain showers before 1am. Mostly cloudy, with a low around 36. Chance of precipitation is 20%.
A slight chance of rain showers after 1pm. Partly sunny, with a high near 57. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Sunny
|
69°F |
5 to 12 mph
SE
|
|
Wednesday Night
Apr 22
|
Partly Cloudy
|
53°F |
10 mph
SSE
|
|
Thursday
Apr 23
|
Partly Sunny then Chance Showers And Thunderstorms
|
73°F |
10 to 21 mph
S
|
|
Thursday Night
Apr 23
|
Showers And Thunderstorms
|
51°F |
14 to 17 mph
SSW
|
|
Friday
Apr 24
|
Chance Rain Showers
|
60°F |
14 to 17 mph
WSW
|
|
Friday Night
Apr 24
|
Chance Rain Showers
|
38°F |
9 to 14 mph
WNW
|
|
Saturday
Apr 25
|
Mostly Sunny then Slight Chance Rain Showers
|
56°F |
9 to 14 mph
NW
|
|
Saturday Night
Apr 25
|
Slight Chance Rain Showers
|
36°F |
6 to 12 mph
NNW
|
|
Sunday
Apr 26
|
Partly Sunny then Slight Chance Rain Showers
|
57°F |
6 to 12 mph
NNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marathon.
