SIOUX FALLS SiouxFallsWeather.com

Tuesday, September 8, 2026

Zone Forecast Product

.TODAY...Mostly cloudy with a slight chance of showers and thunderstorms this morning, then mostly sunny this afternoon. Highs in the lower 80s. Southwest winds 10 to 15 mph, becoming northwest 5 to 10 mph this afternoon. Chance of rain 20 percent. .TONIGHT...Partly cloudy in the evening, then becoming mostly clear. Cooler. Less humid with lows in the upper 50s. Northwest winds 5 to 10 mph. .WEDNESDAY...Sunny. Highs in the upper 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Clear. Lows in the lower 50s. Northwest winds 5 to 10 mph in the evening, becoming light and variable. .THURSDAY...Sunny. Highs in the lower 80s. South winds 10 to 15 mph. .THURSDAY NIGHT...Mostly clear. Not as cool with lows in the lower 60s. .FRIDAY...Mostly sunny and breezy. Highs in the upper 80s. .FRIDAY NIGHT...Mostly clear. Lows in the mid 50s. .SATURDAY...Mostly sunny. Not as warm with highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy. A chance of showers after midnight. Lows in the lower 50s. Chance of rain 30 percent. .SUNDAY...Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. Highs around 70. Chance of rain 50 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 50s. Chance of rain 60 percent. .MONDAY...Partly sunny. A chance of showers in the morning. Highs in the upper 60s. Chance of rain 50 percent.