SIOUX FALLS SiouxFallsWeather.com

Saturday, June 27, 2026

Zone Forecast Product

...HEAT ADVISORY IN EFFECT FROM 1 PM SUNDAY TO 9 PM CDT MONDAY... .TONIGHT...Mostly cloudy. Showers likely with a chance of thunderstorms after midnight. Breezy with lows in the upper 60s. Southeast winds 20 to 25 mph with gusts up to 35 mph. Chance of rain 70 percent. .SUNDAY...Mostly cloudy with showers likely with a chance of thunderstorms in the morning, then mostly sunny in the afternoon. Breezy and much warmer. Humid with highs in the mid 90s. Southeast winds 15 to 25 mph. Chance of rain 70 percent. Heat index values up to 100 in the afternoon. .SUNDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. Southeast winds 5 to 10 mph, increasing to 15 to 20 mph after midnight. Heat index values up to 100 early in the evening. .MONDAY...Sunny, breezy, hot with highs in the upper 90s. South winds 15 to 25 mph with gusts up to 35 mph. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Southwest winds 15 to 20 mph with gusts up to 30 mph, becoming south 5 to 10 mph after midnight. Chance of rain 50 percent. .TUESDAY...Sunny. A slight chance of showers and thunderstorms in the morning. Highs in the lower 90s. Chance of rain 20 percent. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. .WEDNESDAY...A chance of thunderstorms in the morning. Partly sunny with a chance of showers. Highs in the lower 90s. Chance of rain 40 percent. .WEDNESDAY NIGHT...Showers likely with a chance of thunderstorms in the evening. Lows in the upper 60s. Chance of rain 60 percent. .THURSDAY...Mostly sunny. Highs in the mid 90s. .THURSDAY NIGHT...A chance of thunderstorms. Showers likely, mainly in the evening. Lows around 70. Chance of rain 60 percent. .FRIDAY...Mostly sunny. Hot with highs in the mid 90s. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s. Heat index values up to 100 early in the evening. .INDEPENDENCE DAY...Mostly sunny. Hot with highs in the mid 90s.