Chicago, Illinois – Summer heat is set to build across Chicago and northern Illinois this week, with temperatures pushing into the upper 80s and low 90s by Thursday and Friday. According to the National Weather Service, most of the region will stay dry except for a brief chance of rain south of I-80 on Tuesday afternoon. Skies will trend partly to mostly sunny, with only a few clouds passing through early in the week.
Downtown Chicago residents should expect highs of 80 to 84 through Tuesday, then a steady climb into the upper 80s and possibly low 90s for the second half of the week. Overnight lows will generally stay in the 60s, with muggy conditions especially near the lakefront. The only notable rain threat will be south of I-80 late Tuesday, but even that looks limited.
Commuters can anticipate mostly clear travel on area highways, including I-90, I-94, and Lake Shore Drive, with no major weather disruptions expected. With the heat ramping up, officials recommend staying hydrated, limiting strenuous outdoor activity in the afternoon, and checking on vulnerable neighbors, especially through Thursday and Friday.
The warm, mostly dry pattern is likely to hold until at least the weekend, with updated advisories possible if the heat intensifies further.
Five Day Forecast for Chicago, Illinois:
- Monday: Partly cloudy, high 80–84, low 60–65
- Tuesday: Mostly sunny, PM showers possible south of I-80, high 80–84, low 63–66
- Wednesday: Sunny, high 84–87, low 64–68
- Thursday: Mostly sunny, high 85–90, low 66–69
- Friday: Mostly sunny, hot, high 87–92, low 66–69
