A rainy stretch from northern Wisconsin and western upper Michigan will become prone to snow by late on Sunday night. This potential for snow will last through at least Tuesday morning.
By Tuesday, even more cold air will spiral southward over the Midwest as the parent storm swirls over Michigan and southern Ontario, Canada. It is possible that snow will be seen into lower Michigan, northern Illinois and northern Indiana.
Story by AccuWeather.com Senior Meteorologist Jim Andrews.