SIOUX FALLS SiouxFallsWeather.com

Wednesday, September 16, 2026

Zone Forecast Product

.TODAY...Partly sunny this morning, then mostly cloudy with a chance of showers this afternoon. Highs in the upper 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. .TONIGHT...Mostly cloudy. A chance of sprinkles in the evening. Lows in the upper 50s. South winds 5 to 10 mph with gusts up to 20 mph, becoming southwest after midnight. .THURSDAY...Mostly cloudy in the morning, then partly sunny with a slight chance of showers in the afternoon. Highs in the mid 70s. Northeast winds 5 to 10 mph. Chance of rain 20 percent. .THURSDAY NIGHT...Showers likely with a slight chance of thunderstorms in the evening, then showers with a chance of thunderstorms after midnight. Lows in the lower 60s. East winds 15 to 20 mph. Chance of rain 90 percent. .FRIDAY...Becoming partly sunny in the afternoon. A slight chance of thunderstorms. Showers likely, mainly in the morning. Humid with highs in the mid 70s. Southeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent. .FRIDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the upper 50s. Chance of rain 50 percent. .SATURDAY...Mostly cloudy. Highs in the upper 60s. .SATURDAY NIGHT...Mostly cloudy. Lows in the mid 50s. .SUNDAY...Mostly cloudy with a 40 percent chance of showers. Highs in the mid 60s. .SUNDAY NIGHT...Mostly cloudy. A chance of showers after midnight. Lows in the lower 50s. Chance of rain 40 percent. .MONDAY...Mostly cloudy in the morning, then becoming partly sunny. Highs in the upper 60s. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s. .TUESDAY...Partly sunny. Highs in the lower 70s.