Illinois greets the morning wrapped in biting cold, with frozen sidewalks, stiff car doors, and visible breath lingering in the air. Temperatures sit near 18 degrees across Chicago, marking one of the colder starts so far this December.
Skies stay mostly clear today, but the cold holds firm. Afternoon highs struggle to reach the mid-30s. Even with sunshine, shaded streets and bridges remain slick early. Drivers should watch for lingering ice, especially on ramps along I-90, I-94, and Lake Shore Drive.
Conditions shift Wednesday as clouds increase and winds strengthen. Temperatures climb slightly into the upper 30s, but gusts up to 25 mph add a sharp edge. It will feel colder than the numbers suggest, especially near the lakefront.
The bigger change arrives Thursday. Moisture moves in by afternoon, bringing rain first, then a possible rain-to-snow changeover by evening as colder air filters back in. Highs peak near 46 degrees before dropping quickly Thursday night. As temperatures fall toward the mid-teens, any leftover moisture may refreeze.
This setup raises concern for black ice, particularly late Thursday night into early Friday. Side streets, parking lots, and untreated surfaces could turn slick fast. Commuters should plan extra travel time and reduce speeds after sunset.
Friday stays colder, with highs near 27 degrees under mostly sunny skies. Winds ease, but cold pavement lingers. The weekend looks calmer, with gradual moderation and highs near 40 by Saturday.
Meteorologists say this pattern fits a classic mid-December transition. Mild air briefly pushes north, then retreats, leaving winter hazards behind.
Prepare now. Keep winter gear ready. Allow extra time Thursday night. Expect conditions to change quickly.
5-Day Outlook for Chicago, IL
- Today: Mostly sunny, high near 36
- Wednesday: Mostly sunny, breezy, high near 38
- Thursday: Rain, then chance rain/snow, high near 46
- Friday: Mostly sunny, colder, high near 27
- Saturday: Mostly cloudy, high near 41
