SIOUX FALLS SiouxFallsWeather.com

Tuesday, May 19, 2026

Zone Forecast Product

...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT WEDNESDAY... .TONIGHT...Partly cloudy this evening, then clearing. Areas of frost after midnight. Lows in the lower 30s. Northwest winds 10 to 15 mph, becoming east around 5 mph after midnight. .WEDNESDAY...Mostly sunny in the morning, then becoming mostly cloudy. Areas of frost in the morning. Highs in the lower 60s. South winds 5 to 10 mph. .WEDNESDAY NIGHT...Mostly cloudy. Lows around 40. Southeast winds 5 to 10 mph. .THURSDAY...Mostly sunny. Highs in the mid 60s. Southeast winds 15 to 20 mph with gusts up to 30 mph. .THURSDAY NIGHT...Mostly cloudy. A slight chance of showers after midnight. Lows in the lower 40s. Southeast winds 15 to 20 mph with gusts up to 30 mph, diminishing to 5 to 10 mph with gusts up to 20 mph after midnight. Chance of rain 20 percent. .FRIDAY...Showers likely. A chance of thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 70 percent. .FRIDAY NIGHT...Showers likely with a chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the mid 40s. Chance of rain 70 percent. .SATURDAY...Cloudy in the morning, then becoming partly sunny. Highs around 70. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 40s. .SUNDAY...Sunny, warmer with highs in the lower 80s. .SUNDAY NIGHT...Mostly clear. A chance of showers and thunderstorms in the evening. Lows in the lower 50s. Chance of rain 30 percent. .MEMORIAL DAY...Mostly sunny. Highs in the mid 80s. .MONDAY NIGHT...Mostly clear. Lows in the upper 50s. .TUESDAY...Mostly sunny. Highs in the upper 80s.