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| NWS Forecast for: Sioux County Issued by: National Weather Service Sioux Falls, SD Last Update: 1134 PM CDT Mon Jun 8 2026 |  |
Overnight: Mostly cloudy. A chance of showers and thunderstorms late this evening, then a slight chance of showers and thunderstorms. Lows in the upper 60s. Southeast winds around 5 mph. Chance of rain 30 percent. Tuesday: Mostly sunny. Humid with highs in the mid 90s. Southeast winds 15 to 20 mph. Heat index values up to 101. Tuesday Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Humid with lows in the lower 70s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent. Heat index values up to 100 early in the evening. Wednesday: Sunny. A chance of showers with a slight chance of thunderstorms in the morning. Highs in the lower 90s. South winds 15 to 20 mph, becoming west in the afternoon. Chance of rain 50 percent. Wednesday Night: Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Cooler. Less humid with lows around 60. Northwest winds 15 to 20 mph, becoming northeast around 5 mph after midnight. Chance of rain 20 percent. Thursday: Mostly sunny. A slight chance of showers in the morning. Breezy and not as warm with highs in the upper 70s. Chance of rain 20 percent. Thursday Night: Mostly clear. Lows in the upper 50s. Friday: Sunny. Highs in the mid 80s. Friday Night: Mostly clear in the evening, then becoming partly cloudy. Lows around 60. Saturday: Sunny. Highs in the lower 80s. Saturday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s. Sunday: Partly sunny. Highs in the upper 70s. Sunday Night: Mostly cloudy. Lows in the mid 50s. Monday: Partly sunny. Highs in the mid 70s. | |
| Zone Forecast: Sioux County | |
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