Marathon, IA Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Marathon, IA in one place.
A chance of rain showers. Mostly cloudy, with a low around 46. North northeast wind around 5 mph. 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: Apr 15, 2026 6:49 AM CDT.
The active forecast window currently covers Apr 15 to Apr 21, 2026 for Marathon, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 6:49 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Marathon
Thursday looks like the warmest upcoming period in Marathon at 80 degrees F.
Saturday Night is the coolest period ahead with temperatures near 27 degrees F.
The strongest winds are forecast for Friday at about 15 to 25 mph SW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 6:49 AM CDT
- Coverage
- 7 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 rain showers before 4pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 71. Northeast wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 10pm. Partly cloudy, with a low around 46. North northeast wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunny, with a high near 80. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly clear. Low around 53, with temperatures rising to around 56 overnight. South wind around 15 mph, with gusts as high as 25 mph.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 74. Southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 4am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
A slight chance of rain and snow showers. Mostly sunny, with a high near 47.
A slight chance of snow showers before 7pm. Partly cloudy, with a low around 27.
Sunny, with a high near 57.
Mostly clear, with a low around 34.
Sunny, with a high near 72.
Mostly clear, with a low around 47.
Sunny, with a high near 74.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Apr 15
|
Chance Rain Showers
|
46°F |
5 mph
NNE
|
|
Wednesday
Apr 15
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
71°F |
5 to 10 mph
NE
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms then Partly Cloudy
|
46°F |
5 to 10 mph
NNE
|
|
Thursday
Apr 16
|
Sunny
|
80°F |
5 to 15 mph
SSW
|
|
Thursday Night
Apr 16
|
Mostly Clear
|
53°F |
15 mph
S
|
|
Friday
Apr 17
|
Chance Showers And Thunderstorms
|
74°F |
15 to 25 mph
SW
|
|
Friday Night
Apr 17
|
Chance Showers And Thunderstorms then Slight Chance Rain And Snow Showers
|
30°F |
20 mph
NNW
|
|
Saturday
Apr 18
|
Slight Chance Rain And Snow Showers
|
47°F |
20 to 25 mph
NW
|
|
Saturday Night
Apr 18
|
Slight Chance Snow Showers then Partly Cloudy
|
27°F |
10 to 25 mph
NW
|
|
Sunday
Apr 19
|
Sunny
|
57°F |
10 to 15 mph
NW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
34°F |
10 mph
ESE
|
|
Monday
Apr 20
|
Sunny
|
72°F |
15 to 20 mph
SSE
|
|
Monday Night
Apr 20
|
Mostly Clear
|
47°F |
15 to 20 mph
SSW
|
|
Tuesday
Apr 21
|
Sunny
|
74°F |
15 to 20 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marathon.