Expires:202605181200;;747093 FPUS53 KFSD 180445 ZFPFSD Zone Forecasts for SE South Dakota/NW Iowa/SW Minnesota National Weather Service Sioux Falls SD 1144 PM CDT Sun May 17 2026 IAZ014-181200- Clay- Including the city of Spencer 1144 PM CDT Sun May 17 2026 .OVERNIGHT...Cloudy with a chance of showers and thunderstorms. Some thunderstorms may be severe. Lows in the lower 50s. Southeast winds 10 to 15 mph, becoming west. Chance of rain 50 percent. .MONDAY...Cloudy. Showers likely with a chance of thunderstorms in the afternoon. Not as warm with highs in the mid 60s. Northwest winds 5 to 10 mph, becoming northeast in the afternoon. Chance of rain 70 percent. .MONDAY NIGHT...Showers with a chance of thunderstorms in the evening, then showers likely after midnight. Locally heavy rainfall possible in the evening. Lows in the mid 40s. North winds 15 to 20 mph, becoming northwest after midnight. Chance of rain 90 percent. .TUESDAY...Cloudy in the morning, then becoming partly sunny. Highs in the upper 50s. Northwest winds around 20 mph with gusts up to 30 mph. .TUESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 30s. North winds 15 to 20 mph, diminishing to around 5 mph after midnight. .WEDNESDAY...Mostly sunny. Highs in the lower 60s. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows around 40. .THURSDAY...Partly sunny. Highs in the mid 60s. .THURSDAY NIGHT...Mostly cloudy. Lows in the mid 40s. .FRIDAY...Partly sunny. Highs in the lower 70s. .FRIDAY NIGHT...A chance of showers in the evening. Mostly cloudy. Lows in the upper 40s. Chance of rain 30 percent. .SATURDAY...Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. .SUNDAY...Mostly sunny. Highs in the mid 80s. $$