An area of low pressure will move through Wisconsin during the afternoon on Saturday dragging a cold front with it. Early in the day Saturday southerly winds will keep the precipitation as rain but once the front passes by mid-afternoon colder air will get wrapped in behind the front. This will also happen around the time a trough (or dip) in the jetstream is expected to strengthen. Assuming the cold air comes in and cools the column of air quick enough Saturday night, there may be some light accumulations by Sunday morning. The image is the raw data output for Sunday and shows anywhere between a half an inch to a little over an inch of snow remain possible early in the day.
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