SIOUX FALLS SiouxFallsWeather.com

Sunday, July 26, 2026

Zone Forecast Product

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING... .REST OF TONIGHT...Cloudy with a chance of showers with a slight chance of thunderstorms. Near steady temperature in the mid 70s. Southeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent. .SUNDAY...Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then mostly sunny in the afternoon. Hot with highs in the mid 90s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. Heat index values up to 111 in the afternoon. .SUNDAY NIGHT...Mostly clear. Humid with lows in the lower 70s. South winds 10 to 15 mph. Heat index values up to 109 early in the evening. .MONDAY...Mostly sunny. Humid with highs in the lower 90s. Northeast winds 10 to 15 mph. .MONDAY NIGHT...Partly cloudy. Lows in the lower 70s. Northeast winds 5 to 10 mph. .TUESDAY...Mostly sunny. Highs around 90. .TUESDAY NIGHT...Mostly clear. Lows in the upper 60s. .WEDNESDAY...Sunny. Highs in the lower 90s. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s. .THURSDAY...Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 40 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 50 percent. .FRIDAY...Mostly sunny. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear. Lows in the mid 60s. .SATURDAY...Mostly sunny. Highs in the mid 80s.