Harmon Lake, IA 7-Day Night Weather Forecast
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Harmon Lake, IA Weather Forecast


Harmon Lake, IA Weather Forecast Date: 938 PM CDT Fri Oct 09 2026
The area/counties/county of: Winnebago, including the cities of: Forest City and Lake Mills.or toggle through each period.
Rest of Tonight... Clear. Lows in the lower 60s. South winds 10 to 15 mph with gusts up to 25 mph.
Saturday... Sunny, breezy with highs in the mid 80s. South winds 20 to 25 mph with gusts up to 40 mph.
Saturday Night... Clear. Lows in the lower 60s. South winds 15 to 20 mph with gusts up to 35 mph.
Sunday... Sunny. Highs in the lower 80s. South winds 10 to 15 mph with gusts up to 25 mph.
Sunday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s. South winds 10 to 15 mph.
Columbus Day... Partly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 20%.
Monday Night... Partly cloudy. Lows in the lower 50s.
Tuesday... Mostly sunny. Highs in the mid 60s.
Tuesday Night... Partly cloudy. A slight chance of showers after midnight. Lows in the upper 40s. Chance of rain 20%.
Wednesday... Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 40%.
Wednesday Night... Mostly cloudy with a slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 40s. Chance of rain 60%.
Thursday... Mostly cloudy in the morning, then becoming partly sunny. A 50% chance of showers. Highs in the lower 60s.
Thursday Night... Mostly cloudy. A chance of showers, mainly in the evening. Lows in the mid 40s. Chance of rain 40%.
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