Chicago Set for a Shift: Scattered Rain Showers Return Friday After Unseasonably Warm September Heat

Chicago Set for a Shift: Scattered Rain Showers Return Friday After Unseasonably Warm September HeatChicago Set for a Shift: Scattered Rain Showers Return Friday After Unseasonably Warm September Heat

Late-Summer Heatwave

Chicago, IL spent Thursday under a blanket of summerlike warmth. Afternoon highs surged into the mid and upper 80s, with a few spots briefly touching 90 degrees. For mid-September, when the city usually hovers in the mid-70s, it felt more like July. Tonight will bring some relief, with mostly clear skies and lows dipping into the low and mid-60s.

Friday’s Forecast

The day will start bright, but sunshine will not hold out for long. Clouds build steadily through the afternoon, keeping the air thick and warm. Highs will climb back into the mid-80s. By evening, the first showers and storms creep back into the area. Coverage looks patchy, but any rainfall will be welcome after the stretch of dry, hot weather.
Chicago Weather Forecast: Rain Returns Friday After 90°F Heat, Cooler Days AheadChicago Weather Forecast: Rain Returns Friday After 90°F Heat, Cooler Days Ahead

Weekend Outlook

Saturday keeps the warmth in place. Highs in the lower 80s will feel comfortable, though a few isolated showers could interrupt outdoor plans. By Sunday, the skies turn more unsettled. Temperatures close to 80 degrees mix with a better chance for scattered rain, hinting at the change ahead.

Next Week’s Pattern

The new week starts damp. Monday brings on-and-off showers with highs in the upper 70s. Tuesday and Wednesday look calmer, with mostly dry skies and just a stray shower possible. Temperatures slide back to seasonal territory, landing in the mid-70s.

After days of heat more fitting for midsummer, Chicago is on its way back to a September rhythm, with clouds, scattered rain, and cooler afternoons ahead.
Updated: Sep 19, 2025
Published by: Weather U.S. | About Us

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