Chicago, IL – Northern Illinois residents can expect hot and humid weather to peak this weekend, with temperatures and humidity pushing heat indices to around 100 degrees. Forecasters are also watching for a chance of storms near the Wisconsin border late Saturday.
According to the US National Weather Service Chicago, the warm-up will follow a stretch of scattered showers and storms through Tuesday. Stronger storms are most likely east of Interstate 55 on Tuesday, bringing the potential for locally heavy rainfall and gusty winds before drier, less humid weather moves in midweek.
By Saturday, high temperatures are forecast to reach between 90 and 94 degrees, with humidity levels creating dangerous heat index values. Forecasters caution that even short outdoor exposure could lead to heat-related illness if precautions aren’t taken. The Weather Service notes that there is a 20% to 30% chance of storms developing late Saturday, especially near the Wisconsin border, which could bring brief downpours and lightning.
Wednesday and Thursday are expected to be less humid with highs in the low-to-mid 80s before the humidity surges again by Friday. The end of the week will bring temperatures into the upper 80s, setting the stage for Saturday’s heat.
Officials urge residents to monitor forecasts and take heat safety seriously — including staying hydrated, limiting strenuous outdoor activity, and checking on vulnerable neighbors. Storm threats, though not widespread, could still disrupt weekend plans for those in far northern Illinois.
For real-time updates, residents are advised to follow the National Weather Service Chicago’s alerts online and through local media.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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