Chicago, Illinois – Chicago’s stretch of late-summer warmth will continue through the week, but scattered storms are poised to return by Friday night, bringing a damp and unsettled weekend across northern Illinois. While not a total washout, showers and thunderstorms could disrupt outdoor plans, especially on Sunday.
According to the National Weather Service in Chicago, highs will push into the upper 80s inland both Thursday and Friday, with cooler conditions in the 70s along Lake Michigan due to persistent lake breezes. Rain chances begin Friday evening, with the heaviest activity targeting the I-39 and I-55 corridors.
Saturday will stay warm with highs from the upper 70s to mid-80s, but scattered afternoon storms may develop, especially in central and northern Illinois. By Sunday, a stronger round of showers and thunderstorms could impact Chicago and nearby suburbs, with a 40–50% chance of rainfall during the afternoon and evening.
Travelers should be prepared for wet roads and brief downpours that may reduce visibility. Outdoor events may face delays or cancellations, particularly late in the weekend.
Storm chances linger into early next week, keeping the region unsettled. Additional advisories may be issued as conditions evolve.
Five Day Forecast for Chicago, Illinois
- Thursday: High 85–90°F, patchy morning fog, cooler 70s lakeside. Low 58–66°F.
- Friday: High 83–90°F, scattered showers late. Low 60–66°F.
- Saturday: High 78–85°F, 20–30% chance of afternoon storms. Low 60–66°F.
- Sunday: High 75–82°F, 40–50% chance of thunderstorms. Low 60–66°F.
- Monday: Highs near 80°F, continued storm risk.
