| NWS Forecast for: Sioux County Issued by: National Weather Service Sioux Falls, SD Last Update: 234 PM CDT Tue Sep 1 2026 |  |
Tonight: Showers and thunderstorms likely. Lows in the mid 60s. East winds 5 to 10 mph. Chance of rain 90 percent. Wednesday: Mostly sunny. Humid with highs in the upper 80s. Southeast winds around 5 mph, becoming southwest in the afternoon. Wednesday Night: Partly cloudy. A chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Southeast winds 5 to 10 mph. Chance of rain 50 percent. Thursday: Sunny with highs in the upper 80s. South winds 10 to 15 mph. Heat index values in the upper 90s in the afternoon. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the lower 70s. South winds 5 to 10 mph. Friday: Mostly sunny. Highs around 90. Heat index values in the upper 90s. Friday Night: Mostly clear in the evening, then becoming partly cloudy. Lows around 70. Saturday: Mostly sunny. Highs around 90. Heat index values in the upper 90s in the afternoon. Saturday Night: Partly cloudy. A chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 40 percent. Sunday: Partly sunny. A chance of showers in the morning. Highs in the upper 80s. Chance of rain 40 percent. Sunday Night: Partly cloudy. A chance of showers after midnight. Lows in the mid 60s. Chance of rain 30 percent. Labor Day: Mostly cloudy in the morning, then becoming mostly sunny. Highs in the lower 80s. Monday Night: Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the mid 60s. Chance of rain 40 percent. Tuesday: Mostly cloudy with a chance of showers in the morning, then mostly sunny in the afternoon. Highs in the lower 80s. Chance of rain 40 percent. | |
| Zone Forecast: Sioux County | |
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