Chicago, Ill. – Sunshine and calm skies start the week, but drivers and commuters should prepare for a quick change as October begins. By Wednesday, cooler air and cloudier conditions move in, bringing highs in the lower 70s and a less summerlike feel.
According to the National Weather Service in Chicago, Monday brings bright sunshine with a high near 80 degrees, while Tuesday tops out near 76 under mostly sunny skies. By Wednesday, clouds spread across northern Illinois with highs dropping to 73, signaling the shift into a true fall pattern. Motorists along I-90 and Lake Shore Drive should watch for reduced visibility at times as clouds thicken midweek.
Residents can take advantage of the mild early-week warmth for outdoor plans, but should plan ahead for cooler evenings. Lows fall into the low to mid-60s through midweek, meaning lightweight jackets may be needed for morning commutes. Air conditioners will get a break as humidity eases.
Thursday and Friday rebound with sunshine and highs returning to the upper 70s and low 80s. The weekend looks seasonably warm, with Saturday reaching the mid-80s before tapering back to the low 80s on Sunday.
The National Weather Service notes no major storms are expected this week, but shifting winds and fall variability could bring more changes next week. Keep devices charged and stay alert for new advisories as October settles in.
Five Day Forecast for Chicago, Illinois
- Monday: Sunny, high near 80.
- Tuesday: Sunny, high near 76.
- Wednesday: Partly sunny, high near 73.
- Thursday: Mostly sunny, high near 75.
- Friday: Sunny, high near 81.
