Illinois – A cold, crisp start grips Chicago this morning, with temperatures near 39°F and a biting breeze off the lake. Wet pavement lingers in spots, and rivers remain swollen, especially near the Des Plaines River where water levels continue to threaten nearby roads and low-lying areas.
According to the National Weather Service in Chicago, a significant frost and freeze risk develops early Monday, with temperatures dropping near or below 32°F outside the urban core. Sensitive plants and early spring vegetation face potential damage. At the same time, flood warnings remain in effect along the Des Plaines River, where minor to moderate flooding continues and some areas near US-45 and River Road could see water encroachment.
Light showers may develop by afternoon today, with winds increasing to 30 mph. Drivers along I-55, I-90, and local surface streets should expect brief slick conditions and reduced visibility. Conditions calm later, but colder air settles in quickly. By early Monday morning, patchy frost becomes likely across suburban Cook, DuPage, and Lake counties.
Monday brings sunshine but stays cool, with highs near 47°F. The early chill gives way to a steady warmup. By Tuesday, highs jump into the low 70s, and midweek feels more like late spring. Chicago could reach the upper 50s Wednesday, with continued dry conditions before rain chances return late week.
Five Day Outlook for Chicago, Illinois:
Monday: Sunny, high 47°F, morning frost risk
Tuesday: Mostly sunny, high 72°F
Wednesday: Sunny, high 58°F
Thursday: Warmer, high near 80°F, showers late
Friday: Showers likely, high near 72°F
