Sioux Falls, SD – Rain chances return to eastern South Dakota Monday, beginning in the late morning to early afternoon and expanding northward throughout the day. A stronger band of precipitation is expected to form north of I-90 by mid- to late afternoon, setting the stage for a transition from rain to snow as temperatures fall into the evening.
According to the National Weather Service in Sioux Falls, the developing system will first bring widespread rain across the Missouri River Valley before spreading toward Brookings, Huron, Madison, and nearby communities. As cooler air arrives after sunset, forecasters expect the rain to gradually change to snow, with a brief period of sleet possible during the transition.
The best chance for accumulating snowfall appears to be along and near the Highway-14 corridor in southwestern Minnesota and into nearby portions of east-central South Dakota. Current projections indicate snow totals generally less than one inch, though locally higher amounts are possible if temperatures end up slightly colder than forecast. Areas including Brookings, Marshall, Pipestone, and Watertown could see quick bursts of moderate snow before precipitation tapers off overnight.
Radar projections released by the weather service highlight widespread rain at 3 p.m. Monday, heavier precipitation north of I-90 by 6 p.m., and the rain-to-snow transition peaking around 9 p.m. Light snow may linger into early Tuesday morning.
Travel impacts are expected to remain limited, but forecasters advise monitoring conditions, especially for those driving Monday evening in northern Sioux Falls, Brookings County, and southwestern Minnesota.
Residents are encouraged to check updated forecasts as temperature shifts may affect snowfall amounts.
