Illinois – A chilly breeze is sweeping across Chicago this afternoon, but the real drop arrives within hours as temperatures plunge into the 20s, bringing a sharp reminder that spring is not fully settled yet.
According to the National Weather Service in Chicago, highs today reach the mid-40s to mid-50s before colder air moves in quickly. Overnight lows fall between 22°F and 30°F, especially inland away from Lake Michigan, where slightly milder conditions linger. Winds remain light but enough to add a biting edge.
Across Chicago, Naperville, and Joliet, the biggest concern is the overnight freeze. Early blooms and sensitive plants could be damaged. Drivers should also watch for isolated slick spots, especially on bridges and overpasses where temperatures fall fastest.
By Tuesday, cooler air holds near the lake, with highs ranging from the mid-30s lakeside to upper 40s inland. A few light showers or even brief flurries may develop near and north of I-55, though impacts remain minimal.
Conditions shift midweek as winds increase and temperatures rebound. Wednesday brings gusty conditions with highs climbing into the upper 50s to upper 60s. By Thursday, milder air pushes highs into the mid to upper 60s, but scattered showers develop, continuing into Friday with additional rain chances.
This pattern signals a classic spring swing—cold now, warmer and wetter soon. Expect changing conditions through the end of the week.
Bundle up tonight and plan ahead for that temperature drop. Are you noticing colder air moving in where you are this afternoon?
