Chicago, Illinois – Warm sunshine will dominate Chicago this weekend, but residents should prepare for a noticeable cool-down by the first days of October. Temperatures are expected to climb into the low 80s Saturday before gradually dipping back into the 70s by midweek.
According to the National Weather Service, Thursday brings only a slight chance of showers before skies clear and dry air moves in. By Saturday, Chicago will see sunny skies, a high near 82, and light winds, offering ideal conditions for outdoor events and highway travel across I-90, I-94, and city roadways. Friday evening football games will also benefit from clear skies and comfortable air.
Drivers and pedestrians should still plan ahead as crisp nights return, with lows dropping into the 50s and 60s. While not yet frost conditions, the shift signals an early preview of colder fall weather just around the corner. With October starting Wednesday, forecasters suggest a slight dip in temperatures, with highs only reaching the low to mid-70s and breezier winds developing.
Chicago-area residents should enjoy one more summer-like weekend before cooler days settle in. Outdoor plans, from lakefront walks to neighborhood festivals, are expected to see near-perfect conditions through Sunday.
More seasonal changes are ahead, with forecasters noting that additional cooling and potential early-winter signals could appear later in October. For now, warnings remain minimal, but residents should monitor updates as the transition deepens.
Five Day Forecast for Chicago, Illinois
- Thursday: Mostly sunny, high near 70.
- Friday: Sunny, high near 80. Low 63.
- Saturday: Sunny, high near 82.
- Sunday: Sunny, high near 78. Low 64.
- Monday: Sunny, high near 76.
