Rain showers are moving through South Dakota today, with the heaviest rain expected along the I-90 corridor near Sioux Falls. Showers should begin tapering off later in the day as a “dry slot”-a zone of dry air-pushes into the area, offering temporary relief from precipitation. According to the National Weather Service, the dry slot may reduce rainfall to a drizzle or even cause a short lull in showers. Rain totals today will range from a few tenths to half an inch, with heavier accumulation likely south of I-90.