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Alton, IA Weather Forecast
Alton, IA Weather Forecast Date: 754 PM CDT Sat Oct 24 2026
The area/counties/county of: Sioux, including the cities of: Sioux Center, Orange City, Rock Valley, Hawarden, and Hull.or toggle through each period.
Tonight... Cloudy with a 50% chance of showers. Cooler with lows in the mid 40s. North winds 5 to 10 mph.
Sunday... Mostly cloudy. A chance of showers in the morning. Highs around 60. Northeast winds 5 to 10 mph. Chance of rain 50%.
Sunday Night... Cloudy. A chance of showers after midnight. Lows in the lower 40s. Northeast winds 10 to 15 mph. Chance of rain 50%.
Monday... Showers likely. Highs in the upper 50s. East winds 10 to 15 mph. Chance of rain 70%.
Monday Night... Showers likely with a slight chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the mid 40s. East winds around 10 mph with gusts up to 20 mph, becoming south after midnight. Chance of rain 70%.
Tuesday... Mostly cloudy in the morning, then partly sunny with a slight chance of showers in the afternoon. Highs in the lower 60s. Chance of rain 20%.
Tuesday Night... Mostly cloudy. A chance of showers in the evening. Lows in the upper 40s. Chance of rain 30%.
Wednesday... Mostly sunny. A chance of showers in the afternoon. Highs in the upper 60s. Chance of rain 30%.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s.
Thursday... Partly sunny. Highs around 70.
Thursday Night... Partly cloudy. Lows in the lower 50s.
Friday... Partly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Chance of rain 30%.
Friday Night... Mostly cloudy with a 50% chance of showers. Lows in the lower 50s.
POP = Probability of Precipitation
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