Weather World
Alton, IA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Alton, IA Weather Forecast
Alton, IA Weather Forecast Date: 505 PM CDT Mon Oct 26 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... A slight chance of thunderstorms. Showers. Near steady temperature in the upper 40s. East winds 10 to 15 mph with gusts up to 25 mph, becoming southeast 5 to 10 mph after midnight. Chance of rain 90%.
Tuesday... Cloudy in the morning, then becoming partly sunny. Highs in the upper 50s. West winds 5 to 10 mph, becoming southwest in the afternoon.
Tuesday Night... Mostly cloudy. Lows in the upper 40s. South winds 5 to 10 mph.
Wednesday... Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A slight chance of thunderstorms in the afternoon. Warmer with highs around 70. South winds 10 to 15 mph. Chance of rain 50%.
Wednesday Night... Mostly cloudy. A slight chance of showers in the evening. Lows in the upper 40s. Southwest winds 5 to 10 mph, becoming northwest after midnight. Chance of rain 20%.
Thursday... Sunny. Highs in the mid 60s.
Thursday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s.
Friday... Mostly cloudy in the morning, then becoming partly sunny. A 50% chance of showers. Highs in the mid 60s.
Friday Night... Showers likely. Lows in the lower 50s. Chance of rain 70%.
Saturday... Mostly cloudy with a 50% chance of showers. Highs in the upper 60s.
Saturday Night... Mostly cloudy with a 30% chance of showers. Lows in the lower 50s.
Sunday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 60s.
Sunday Night... Mostly cloudy with a 50% chance of showers. Lows in the upper 40s.
POP = Probability of Precipitation
Alton Radar Loop
Use the map search tool if you want to place a location marker on the radar map...