Wisconsin starts the morning with a biting chill and gray skies, but the bigger concern is what happens as temperatures dip again toward freezing.
According to the National Weather Service, lows fall near 31 to 33 degrees early Saturday across Milwaukee, Racine, Kenosha, and Waukesha, creating conditions ripe for widespread frost formation.
This is part of a broader cold pattern gripping much of the Great Lakes, where below-average temperatures linger before a sharp warmup early next week.
Through today, expect mostly cloudy skies with highs near 45. A brief shower window between 3 p.m. and 5 p.m. may dampen roads, especially along I-94 and I-43. Wet pavement combined with falling evening temperatures could create isolated slick spots in low-lying areas and bridges.
The most critical window arrives between 4 a.m. and 8 a.m. Saturday. Frost will form quickly on exposed surfaces, including rooftops, lawns, and untreated roads. Rural areas west of Milwaukee and low-lying spots near the Fox River face the highest risk.
Sensitive plants may suffer damage within hours. Gardeners should cover vegetation before evening, while early commuters should watch for patchy reduced visibility and cold pavement.
By Saturday afternoon, conditions improve with sunshine and highs near 49. The warming trend accelerates Sunday into Monday, with temperatures climbing into the 60s and reaching near 70 by Monday afternoon.
Five-day outlook:
Saturday: Frost early, then sunny, high 49
Sunday: Chance of showers, high 62
Monday: Mostly sunny, high 70
Tuesday: Showers possible, high 56
Wednesday: Showers continue, high mid-50s
