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Marathon, IA Weather
It is 57°F in Marathon, IA, observed at 4:15 PM CDT. Today: Chance Rain Showers, high 55°F, low 48°F. Hourly and 7-day forecast from the National Weather Service. Times are local (CDT).
Marathon, IA current weather
57°F
Slight Chance Rain Showers
H 55° / L 48°Feels like 57°
4° cooler than yesterday at this time
Observed at Storm Lake (21.9 mi away), 10/30/2026, 4:15 PM CDT
Hourly forecast
NWS, updated 10/30/2026, 1:53 PM PT
7-day forecast
Tap a day for details
Today10/3057% chance of precipitationLow 48°High 55°
This Afternoon: A chance of rain showers. Cloudy, with a high near 55. East southeast wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Tonight: A chance of rain showers before 7pm, then a chance of showers and thunderstorms between 7pm and 4am, then patchy fog and showers and thunderstorms likely. Cloudy. Low around 48, with temperatures rising to around 51 overnight. East southeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Chance Rain ShowersSat10/3149% chance of precipitationLow 50°High 61°
Saturday: Patchy fog and a chance of showers and thunderstorms before 5pm. Cloudy, with a high near 61. South southeast wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Saturday Night: A slight chance of rain showers. Cloudy, with a low around 50. South southeast wind around 5 mph. Chance of precipitation is 20%.
Patchy FogSun11/144% chance of precipitationLow 52°High 61°
Sunday: A slight chance of rain showers before noon. Mostly cloudy. High near 61, with temperatures falling to around 58 in the afternoon. South southeast wind around 5 mph. Chance of precipitation is 20%.
Sunday Night: A chance of rain showers after midnight. Mostly cloudy, with a low around 52. Southeast wind 5 to 10 mph. Chance of precipitation is 40%.
Slight Chance Rain Showers then Mostly CloudyMon11/299% chance of precipitationLow 52°High 64°
Monday: Showers and thunderstorms. Cloudy, with a high near 64. Chance of precipitation is 100%.
Monday Night: Showers and thunderstorms. Cloudy, with a low around 52. Chance of precipitation is 90%.
Showers And ThunderstormsTue11/374% chance of precipitationLow 44°High 60°
Tuesday: Rain showers likely. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.
Tuesday Night: A chance of rain showers. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
Rain Showers LikelyWed11/434% chance of precipitationLow 42°High 56°
Wednesday: A chance of rain showers. Partly sunny, with a high near 56. Chance of precipitation is 30%.
Wednesday Night: Partly cloudy, with a low around 42.
Chance Rain ShowersThu11/522% chance of precipitationLow 38°High 53°
Thursday: A slight chance of rain showers. Partly sunny, with a high near 53.
Thursday Night: Mostly cloudy, with a low around 38.
Slight Chance Rain Showers
Forecast for 42.858, -94.983 from the NWS FSD office, updated 10/30/2026, 1:53 PM PT · Official forecast on weather.gov
From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.
Next 6 hours
NWS hourly forecast
- Now54°Slight Chance Rain Showers23%10 mph
- 5 PM53°Chance Rain Showers26%10 mph
- 6 PM52°Chance Rain Showers29%10 mph
- 7 PM51°Chance Showers And Thunderstorms39%10 mph
- 8 PM51°Chance Showers And Thunderstorms43%10 mph
- 9 PM51°Chance Showers And Thunderstorms32%10 mph
Hourly details
Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShowHide
Observed today
Since midnight, vs yesterday and normal
Today's high so far is 5° above the normal of 52° and 4° cooler than yesterday's high.
- High so far
- 57°
- 5° above normal
- Low so far
- 45°
- Normal low 32°
- Precipitation
- 0.00 in
- Since midnight
- Yesterday
- High 61° · Low 41° · Precip 0.00 in
- Normal for today
- High 52° · Low 32°
Observed at Storm Lake (KSLB) since midnight local time, through 4:15 PM. Station reports are preliminary and not quality controlled. Normals are estimated from 1991 to 2020 monthly normals at Sioux Rapids 4 E.
Radar and satellite
National radarNEXRAD (up to 24 hours) and GOES
Frequently asked questions
- What is the weather in Marathon, IA right now?
- The latest observation from Storm Lake was 57°F, reported at 10/30/2026, 4:15 PM CDT.
- What is the high temperature today in Marathon, IA?
- The National Weather Service forecast for this afternoon calls for a high near 55°F. Chance Rain Showers.
- Will it rain in Marathon, IA in the next 24 hours?
- The hourly forecast shows a 52% chance of precipitation around 10/31/2026, 12:00 AM CDT.
- What time is sunrise and sunset in Marathon, IA today?
- Sunrise is about 7:52 AM CDT and sunset is about 6:14 PM CDT (calculated for the center of the area, within a few minutes).
- What is the normal October weather in Marathon, IA?
- At Sioux Rapids 4 E, the 1991 to 2020 normal high in October is 61°F and the normal low is 39°F.
Rain and snow totals
Next 3 days, NWS forecast grid
- Rain (liquid)
- 1.46 in
- Snow
- 0.00 in
- Ice
- 0.00 in
Nearby hazards
Iowa hazardsSevere storm and flash flood outlooks, expected rain, river flooding and wildfires near this area
- Severe storm outlook today:General thunderstormsOutlook map
- Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
- River gauges within 40 miles at or above flood stage: None reported
- Active wildfires within 50 miles: None reported
UV and air quality forecast
EPA and AirNow
- AQI forecast today (Northwest Iowa)
- 25GoodPM2.5
- AQI forecast tomorrow (Northwest Iowa)
- 37GoodOzone
Drought
By countyBuena Vista County, week of 10/27/2026
No drought or abnormal dryness in this county.
Sun and moon
Local time, center of the area
- Sunrise
- 7:52 AM
- Sunset
- 6:14 PM
- Daylight
- 10 hr 23 min
- Moon
- Waning Gibbous 76% lit
- First light (civil dawn)
- 7:22 AM
- Last light (civil dusk)
- 6:44 PM
- Moonrise
- 9:49 PM
- Moonset
- 1:14 PM
Normal October weather
ClimateNormal October high 61°, low 39°, precipitation 2.51 in for the month. 1991 to 2020 normals at Sioux Rapids 4 E, 5 mi away.
Other places nearby
Data sources
- National Weather Service APINOAA · Official site
- Convective Outlooks and Storm ReportsNOAA Storm Prediction Center · Official site
- Excessive Rainfall Outlook and Quantitative Precipitation ForecastsNOAA Weather Prediction Center · Official site
- National Water Prediction ServiceNOAA National Weather Service · Official site
- WFIGS Current Wildland Fire IncidentsNational Interagency Fire Center · Official site
- UV Index Forecast (Envirofacts)U.S. Environmental Protection Agency and NOAA · Official site
- AirNowU.S. Environmental Protection Agency · Official site
- NWS HeatRisk (experimental)NOAA National Weather Service · Official site
- U.S. Drought MonitorNational Drought Mitigation Center, USDA and NOAA · Official site
- BEACON 2.0 Beach Advisory and Closing On-line NotificationU.S. Environmental Protection Agency · Official site
- U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information · Official site
- Tides & Currents (CO-OPS API)NOAA Center for Operational Oceanographic Products and Services · Official site
- NEXRAD radar tilesIowa Environmental Mesonet, Iowa State University · Official site
- GOES-East and GOES-West GeoColor imageryNOAA NESDIS Center for Satellite Applications and Research · Official site
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About this data
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