Marathon, IA Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Marathon, IA in one place.
A chance of showers and thunderstorms before 3pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Marathon, IA 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 30, 2026 5:36 PM CDT.
The active forecast window currently covers May 31 to Jun 5, 2026 for Marathon, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 31 to Jun 5, 2026
- Latest sync
- May 30, 2026 5:36 PM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Marathon
Wednesday looks like the warmest upcoming period in Marathon at 84 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Sunday at about 15 mph SE.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- May 30, 2026 5:36 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KDMX
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 before 10pm, then showers and thunderstorms likely between 10pm and 11pm, then a chance of showers and thunderstorms. Mostly cloudy. Low around 57, with temperatures rising to around 60 overnight. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 82. Southwest wind around 5 mph. Chance of precipitation is 30%.
Partly cloudy, with a low around 56. Northeast wind around 5 mph.
Mostly sunny, with a high near 82.
Partly cloudy, with a low around 55.
Partly sunny, with a high near 84.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
May 31
|
Chance Showers And Thunderstorms
|
78°F |
15 mph
SE
|
|
Sunday Night
May 31
|
Chance Showers And Thunderstorms
|
57°F |
5 to 10 mph
SE
|
|
Monday
Jun 1
|
Chance Showers And Thunderstorms
|
82°F |
5 mph
SW
|
|
Monday Night
Jun 1
|
Partly Cloudy
|
56°F |
5 mph
NE
|
|
Tuesday
Jun 2
|
Mostly Sunny
|
82°F |
5 to 10 mph
ESE
|
|
Tuesday Night
Jun 2
|
Partly Cloudy
|
55°F |
5 to 10 mph
SE
|
|
Wednesday
Jun 3
|
Partly Sunny
|
84°F |
10 to 15 mph
SSE
|
|
Wednesday Night
Jun 3
|
Chance Showers And Thunderstorms
|
58°F |
10 to 15 mph
S
|
|
Thursday
Jun 4
|
Chance Showers And Thunderstorms
|
81°F |
10 to 15 mph
SSW
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
58°F |
10 to 15 mph
S
|
|
Friday
Jun 5
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
84°F |
10 mph
SSW
|
|
Friday Night
Jun 5
|
Chance Showers And Thunderstorms
|
57°F |
5 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marathon.