Harper, IA 7-Day Weather Forecast
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Harper Weather Forecast


Harper, IA Weather Forecast Date: 1101 PM CDT Tue Sep 15 2026
Weather forecast for Harper, IA
| Tonight Lo: 60°F Lo: 16°C |
Tonight... Mostly cloudy with a chance of showers and thunderstorms. Near steady temperature in the lower 60s. Northeast winds 5 to 10 mph. Chance of rain 50%. |
| Wed Hi: 71°FHi: 22°C Lo: 65°F Lo: 18°C |
Wednesday... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Highs in the lower 70s. East winds 5 to 10 mph. Chance of rain 50%. |
| Thu Hi: 79°FHi: 26°C Lo: 65°F Lo: 18°C |
Thursday... Mostly cloudy. A chance of showers and thunderstorms in the morning. Humid with highs in the upper 70s. West winds around 5 mph, becoming north around 5 mph in the afternoon. Chance of rain 50%. |
| Fri Hi: 81°FHi: 27°C Lo: 69°F Lo: 21°C |
Friday... Mostly cloudy in the morning, then clearing. A chance of showers in the morning. Highs in the lower 80s. Chance of rain 50%. |
| Sat Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Saturday... A chance of showers in the morning. Mostly cloudy. Highs in the lower 80s. Chance of rain 50%. |
| Sun Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Sunday... Mostly cloudy with a 50% chance of showers. Highs in the mid 70s. Lows in the upper 50s. |
| Mon Hi: 70°FHi: 21°C Lo: 59°F Lo: 15°C |
Monday... Mostly cloudy. Highs around 70. Lows in the upper 50s. |
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