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Patchy morning fog will lift quickly, giving way to mostly sunny skies and highs near the upper 70s across south-central and southwestern Wisconsin. A cold front approaches late Tuesday night into Wednesday, bringing widespread showers and a few thunderstorms. Confidence is high in rain for the Wednesday morning/midday window; severe potential looks low, but brief downpours are possible.

Behind the front, much cooler air spills in: highs fall to the low 60s Thursday and stay below normal into Friday. Overnight lows dip into the 40s, especially in rural valleys. A secondary disturbance may clip the region Thursday night into early Friday with scattered showers before brighter, cool sunshine returns into the weekend.

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