On January 13, 2026, southeastern Wisconsin is enjoying unseasonably warm temperatures in the upper 40s, a stark contrast to the typical 31-degree high. However, the mild weather is short-lived. An arctic cold front will arrive on January 14, causing temperatures to plummet into the 20s. A meteorologist from the National Weather Service in Milwaukee/Sullivan stated that January 15 will be the coldest day. Following this, a light but accumulating snow is expected to begin on the evening of January 15 and continue through Saturday, January 17. The weekend will end with a return to bitter cold, with single-digit lows. This forecast comes after a record-breaking warm start to the year, where Milwaukee hit 59 degrees on January 9.
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