SIOUX FALLS SiouxFallsWeather.com

Tuesday, September 29, 2026

Zone Forecast Product

.TODAY...Showers with a slight chance of thunderstorms this morning, then a slight chance of showers this afternoon. Highs in the upper 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 percent. .TONIGHT...Mostly cloudy. Patchy fog after midnight. Lows in the upper 50s. Southwest winds around 5 mph, becoming north around 5 mph after midnight. .WEDNESDAY...Mostly cloudy. Areas of fog in the morning. A slight chance of showers in the afternoon. Highs in the lower 70s. Northeast winds around 5 mph, becoming north in the afternoon. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly cloudy. Lows in the mid 50s. Northwest winds around 5 mph, increasing to north 10 to 15 mph after midnight. .THURSDAY...Mostly cloudy in the morning, then becoming mostly sunny. Cooler with highs in the lower 60s. North winds 10 to 15 mph with gusts up to 25 mph. .THURSDAY NIGHT...Partly cloudy. Lows in the mid 40s. .FRIDAY...Mostly sunny. Highs in the lower 60s. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. .SATURDAY...Partly sunny. Highs in the lower 60s. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 40s. .SUNDAY...Sunny. Highs in the lower 60s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s. .MONDAY...Mostly sunny. Highs in the lower 60s.