Sioux Falls, South Dakota – Rain chances will rise sharply across northwest Iowa and southeast South Dakota by Sunday afternoon, with cities like Storm Lake and Jackson facing an 85% likelihood of showers starting around 4 p.m.
According to the National Weather Service in Sioux Falls, areas along and east of Minnesota/Iowa Highway 60 are most at risk for heavy rainfall, especially during the late afternoon and evening hours. While most locations will begin the day with sunshine, clouds will build steadily northward throughout the morning.
By midday Sunday, cities such as Spencer, Orange City, and Marshall will also see rain probabilities climb above 70%, with potential for locally higher totals. The NWS notes some communities could receive over half an inch of rain, though exact totals remain uncertain as the storm track could shift.
Drivers should prepare for slick roads during evening travel, especially in low-lying or poorly drained areas. Those in the impacted region are advised to check road conditions and avoid unnecessary trips if rainfall intensifies.
Rain chances will linger into early Monday morning, particularly in northwest Iowa, with some drying possible later in the day. Additional updates or advisories could be issued as the system develops.
