SIOUX FALLS SiouxFallsWeather.com

Saturday, August 15, 2026

Zone Forecast Product

.TONIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms this evening. Lows in the lower 60s. Northwest winds 5 to 10 mph. Chance of rain 40 percent. .SUNDAY...Mostly sunny. Highs in the upper 70s. North winds 10 to 15 mph. .SUNDAY NIGHT...Mostly clear. Lows in the mid 50s. Northwest winds 5 to 10 mph, becoming east after midnight. .MONDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Southwest winds 10 to 15 mph. Chance of rain 30 percent. .MONDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy after midnight. Humid with lows in the lower 60s. Southwest winds 5 to 10 mph. Chance of rain 40 percent. .TUESDAY...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy. A chance of showers in the evening. Lows in the mid 50s. Chance of rain 50 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming mostly sunny. Highs in the mid 70s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 50s. .THURSDAY...Mostly cloudy in the morning, then mostly sunny with a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. .THURSDAY NIGHT...Partly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 30 percent. .FRIDAY...Partly sunny in the morning, then clearing. Highs in the upper 70s. .FRIDAY NIGHT...Mostly clear. Lows in the upper 50s. .SATURDAY...Partly sunny in the morning, then clearing. Highs in the lower 80s. -- This email has been checked for viruses by AVG antivirus software. www.avg.com