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


Harmon Lake, IA Weather Forecast Date: 122 AM CDT Wed Oct 21 2026
Weather forecast for Harmon Lake, IA
| Tonight Lo: 49°F Lo: 9°C |
Tonight... Clear. Near steady temperature in the upper 40s. South winds around 5 mph. |
| Wed Hi: 75°FHi: 24°C Lo: 49°F Lo: 9°C |
Wednesday... Sunny. Highs in the mid 70s. Southwest winds around 5 mph. |
| Thu Hi: 79°FHi: 26°C Lo: 51°F Lo: 11°C |
Thursday... Sunny. Highs in the upper 70s. South winds around 5 mph. |
| Fri Hi: 71°FHi: 22°C Lo: 59°F Lo: 15°C |
Friday... Mostly sunny. Highs in the lower 70s. |
| Sat Hi: 71°FHi: 22°C Lo: 51°F Lo: 11°C |
Saturday... Partly sunny with a 20% chance of showers. Highs in the lower 70s. |
| Sun Hi: 60°FHi: 16°C Lo: 45°F Lo: 7°C |
Sunday... Mostly cloudy in the morning, then becoming partly sunny. A 20% chance of showers. Highs around 60. |
| Mon Hi: 55°FHi: 13°C Lo: 39°F Lo: 4°C |
Monday... Partly sunny with a 20% chance of showers. Highs in the mid 50s. |
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