SIOUX FALLS SiouxFallsWeather.com

Monday, September 21, 2026

Zone Forecast Product

.REST OF TONIGHT...Showers. Near steady temperature in the mid 50s. East winds 10 to 15 mph. Chance of rain near 100 percent. .MONDAY...Cloudy. Showers with a chance of drizzle in the morning, then a chance of showers in the afternoon. Near steady temperature in the mid 50s. Northeast winds 10 to 15 mph. Chance of rain 90 percent. .MONDAY NIGHT...A chance of showers in the evening. Mostly cloudy with a slight chance of drizzle. Near steady temperature in the lower 50s. East winds 5 to 10 mph. Chance of rain 40 percent. .TUESDAY...Mostly cloudy in the morning, then becoming mostly sunny. Highs in the lower 60s. East winds 5 to 10 mph. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s. Southeast winds 5 to 10 mph with gusts up to 20 mph. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 60s. .WEDNESDAY NIGHT...Mostly cloudy. Showers likely after midnight. Lows in the lower 50s. Chance of rain 70 percent. .THURSDAY...Mostly cloudy. A chance of showers in the morning. Highs in the mid 60s. Chance of rain 40 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers after midnight. Lows in the mid 50s. Chance of rain 30 percent. .FRIDAY...Mostly cloudy with a 40 percent chance of showers. Highs in the upper 60s. .FRIDAY NIGHT...Mostly cloudy. A chance of showers after midnight. Lows in the mid 50s. Chance of rain 50 percent. .SATURDAY...Cloudy with a chance of showers in the morning, then partly sunny in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .SATURDAY NIGHT...Mostly cloudy. A chance of showers after midnight. Lows in the upper 50s. Chance of rain 30 percent. .SUNDAY...Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 70s.