Sioux Falls, South Dakota – A broad Northern Plains rain pattern is set to intensify by Wednesday morning, bringing repeated rounds of rain and slower travel across South Dakota through the end of the workweek.
According to the National Weather Service Climate Prediction Center, South Dakota is in a high-confidence zone for above-average precipitation from Wednesday through Saturday, with totals expected to run 30 to 60 percent higher than normal. Temperatures are also trending above seasonal levels, with a strong signal for warmer-than-normal conditions across the Plains.
Sioux Falls, Rapid City, and Aberdeen are expected to see multiple waves of rainfall, increasing the risk of standing water on major corridors including I-90 and I-29. In eastern South Dakota, including Brookings and Watertown, saturated ground could lead to quicker runoff and localized flooding concerns. Central areas such as Pierre and Huron may see ponding on roadways, while western مناطق including Rapid City and Spearfish could experience reduced visibility during heavier rain bands…