Marathon, IA Weather Forecast
Local 7-day forecast
Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Marathon, IA in one place.
Rain showers and patchy fog. Cloudy, with a high near 53. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter 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: Oct 15, 2026 3:05 PM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Marathon, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 3:05 PM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Marathon
Wednesday looks like the warmest upcoming period in Marathon at 72 degrees F.
Friday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Tonight at about 15 to 25 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 3:05 PM 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 slight chance of rain showers before 8pm. Mostly cloudy, with a low around 39. Northwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
Mostly cloudy, with a high near 50. North northwest wind 15 to 25 mph, with gusts as high as 40 mph.
Widespread frost after 11pm. Mostly clear, with a low around 29. West wind 0 to 10 mph.
Widespread frost before 9am. Sunny, with a high near 58. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Clear, with a low around 41. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunny, with a high near 65.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 68.
Partly cloudy, with a low around 44.
Sunny, with a high near 70.
Mostly clear, with a low around 50.
A slight chance of rain showers after 7am. Mostly sunny, with a high near 72.
A slight chance of rain showers. Partly cloudy, with a low around 51.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Rain Showers
|
53°F |
10 to 15 mph
NW
|
|
Tonight
Oct 15
|
Slight Chance Rain Showers then Mostly Cloudy
|
39°F |
15 to 25 mph
NW
|
|
Friday
Oct 16
|
Mostly Cloudy
|
50°F |
15 to 25 mph
NNW
|
|
Friday Night
Oct 16
|
Widespread Frost
|
29°F |
0 to 10 mph
W
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
58°F |
5 to 15 mph
SSW
|
|
Saturday Night
Oct 17
|
Clear
|
41°F |
10 to 15 mph
SSW
|
|
Sunday
Oct 18
|
Sunny
|
65°F |
10 to 15 mph
SSW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
43°F |
0 to 5 mph
SSW
|
|
Monday
Oct 19
|
Mostly Sunny
|
68°F |
0 to 5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
44°F |
0 mph
|
|
Tuesday
Oct 20
|
Sunny
|
70°F |
0 to 10 mph
SSE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
50°F |
5 mph
SSE
|
|
Wednesday
Oct 21
|
Slight Chance Rain Showers
|
72°F |
5 to 10 mph
S
|
|
Wednesday Night
Oct 21
|
Slight Chance Rain Showers
|
51°F |
5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marathon.