Chicago, IL Weather Alert: Subfreezing Temperatures Linger Before 40s Arrive Monday

Breath hangs in the air across northeastern Illinois as winter tightens its grasp early this morning. Pavement feels rigid underfoot, and untreated roadways provide a quiet concern when temperatures drop well below zero.

According to the National Weather Service in Chicago, temperatures are hovering around 22 degrees, with light northwest winds keeping wind chills in the teens. Patches of black ice, especially on bridges and shaded roads, can result from persistent moisture and refreezing areas when no snow is falling.

Conditions remain largely gloomy throughout the morning, with highs only reaching the upper 20s. Drivers in Cook County should use caution, especially on I-90, I-94, and Lake Shore Drive, where early slick areas may persist despite dry skies.

Tonight will be colder again, with lows approaching 20 degrees and partly cloudy skies. Sunday marks a noticeable shift. As winds shift southerly, clouds gather and temperatures rise into the lower 30s. This gradual warming continues into Sunday night, with temperatures remaining close to freezing.

The first full week of 2026 brings greater change. Monday’s high will be in the low 40s with partial sunshine, alleviating travel concerns and melting any lingering ice. Monday night remains mild by January standards, with lows in the mid-30s.

With highs in the mid-40s, Tuesday and Wednesday continue to be steady. While the skies are generally gloomy at times, warmer air predominates. Rain chances increase later in the week, reaching 50 degrees by Thursday, signifying a brief respite from winter’s harsher edge.

For now, the cold and concealed slick places early on remain the most significant influence. Plan additional travel time, keep an eye out for refreeze after dusk, and keep winter gear on hand despite the impending warmer.

Five-Day Outlook for Chicago, IL