Weather World
Island School, SD 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Island School, SD Weather Forecast
Island School, SD Weather Forecast Date: 1251 PM CDT Thu Oct 22 2026
The area/counties/county of: Union, including the cities of: North Sioux City, Beresford, Elk Point, Alcester, and Jefferson.or toggle through each period.
This Afternoon... Sunny. Highs in the upper 70s. South winds 10 to 15 mph.
Tonight... Mostly clear in the evening, then becoming partly cloudy. Not as cool with lows in the upper 50s. South winds 10 to 15 mph with gusts up to 25 mph.
Friday... Mostly sunny. A slight chance of showers in the morning. Breezy with highs in the upper 70s. South winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 20%.
Friday Night... Mostly cloudy. A chance of showers after midnight. Breezy with lows around 60. South winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 30%.
Saturday... Partly sunny in the morning, then becoming mostly cloudy. A 50% chance of showers. Highs in the lower 70s. South winds 10 to 15 mph, becoming northwest in the afternoon.
Saturday Night... Cloudy with a 50% chance of showers. Cooler with lows in the upper 40s.
Sunday... Mostly cloudy with a 40% chance of showers. Cooler with highs in the upper 50s.
Sunday Night... Cloudy. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 40s. Chance of rain 60%.
Monday... Showers likely, mainly in the morning. Highs in the lower 50s. Chance of rain 60%.
Monday Night... Showers likely, mainly in the evening. Lows in the upper 30s. Chance of rain 60%.
Tuesday... Mostly cloudy in the morning, then becoming partly sunny. A 50% chance of showers. Highs in the mid 50s.
Tuesday Night... Mostly cloudy. A chance of showers after midnight. Lows in the upper 30s. Chance of rain 30%.
POP = Probability of Precipitation
Island School Radar Loop
Use the map search tool if you want to place a location marker on the radar map...