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Marathon, IA 7-Day Night Weather Forecast
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Marathon, IA Weather Forecast
Marathon, IA Weather Forecast Date: 1054 PM CDT Wed Sep 16 2026
The area/counties/county of: Buena Vista, including the city of Storm Lake.or toggle through each period.
Overnight... A slight chance of thunderstorms late this evening. Cloudy with a chance of showers. Patchy fog. Not as cool. Near steady temperature in the mid 60s. Southeast winds 5 to 10 mph late this evening, becoming light and variable. Chance of rain 40%.
Thursday... Mostly cloudy. A chance of sprinkles in the morning. Patchy fog in the morning. Humid with highs in the lower 70s. Northeast winds around 5 mph.
Thursday Night... Mostly cloudy. Showers with a chance of thunderstorms after midnight. Humid with lows in the lower 60s. East winds 10 to 15 mph. Chance of rain 90%.
Friday... Mostly cloudy with a chance of thunderstorms. Showers, mainly in the morning. Humid with highs in the lower 80s. Southeast winds 15 to 20 mph. Chance of rain 90%.
Friday Night... A chance of thunderstorms. Showers, mainly in the evening. Humid with lows in the mid 60s. South winds 5 to 10 mph with gusts up to 20 mph, becoming west after midnight. Chance of rain 80%.
Saturday... Mostly cloudy with a 20% chance of showers. Highs in the lower 70s.
Saturday Night... Mostly cloudy. Lows in the upper 50s.
Sunday... Cloudy with a chance of showers. Highs in the lower 60s. Chance of rain 50%.
Sunday Night... Mostly cloudy with a chance of showers. Lows in the mid 50s. Chance of rain 50%.
Monday... Mostly cloudy. A chance of showers in the morning. Highs in the lower 60s. Chance of rain 50%.
Monday Night... Mostly cloudy. Lows in the mid 50s.
Tuesday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the upper 60s.
Tuesday Night... Partly cloudy. Lows in the lower 50s.
POP = Probability of Precipitation
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