SIOUX FALLS SiouxFallsWeather.com

Sunday, September 20, 2026

Zone Forecast Product

.REST OF TONIGHT...Cloudy with patchy drizzle. Patchy fog. Near steady temperature in the upper 50s. Northeast winds 10 to 15 mph. .SUNDAY...Cloudy. Patchy drizzle in the morning, then a chance of showers in the afternoon. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. .SUNDAY NIGHT...Showers. Lows in the lower 50s. Northeast winds 10 to 15 mph. Chance of rain near 100 percent. .MONDAY...Cloudy. Showers likely, mainly in the morning. Highs in the upper 50s. Northeast winds 10 to 15 mph. Chance of rain 70 percent. .MONDAY NIGHT...Mostly cloudy. Lows in the mid 40s. East winds 5 to 10 mph. .TUESDAY...Mostly sunny. Highs in the mid 60s. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 40s. .WEDNESDAY...Mostly sunny. Highs in the mid 60s. .WEDNESDAY NIGHT...Mostly cloudy. A chance of showers after midnight. Lows in the upper 40s. Chance of rain 50 percent. .THURSDAY...Cloudy in the morning, then becoming partly sunny. Highs in the upper 60s. .THURSDAY NIGHT...Mostly cloudy. Lows in the lower 50s. .FRIDAY...Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 70s. .FRIDAY NIGHT...Mostly cloudy. Lows in the mid 50s. .SATURDAY...Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 70s.