Chicago, Illinois – Scattered thunderstorms and sweltering heat will persist across northeastern Illinois through Saturday, with highs reaching into the low 90s and little relief outside lakeshore communities.
According to the National Weather Service in Chicago, daily chances for isolated to scattered thunderstorms are expected each afternoon and evening through Saturday, with Wednesday through Friday seeing peak daytime temperatures between 88°F and 92°F. Overnight lows will remain mild, ranging from the mid-60s to low 70s.
In Cook County, storms may develop along key travel corridors including I-55, I-80, and I-294 during evening commutes, posing visibility and hydroplaning risks. Neighborhoods along Lake Michigan, including Rogers Park and Hyde Park, could see slightly cooler conditions but remain vulnerable to passing storms. The highest storm chances appear Wednesday night and Thursday afternoon.
Residents are urged to stay weather-aware, limit outdoor activities during peak heat, and ensure access to air conditioning and hydration. Power outages and brief heavy downpours are possible under stronger cells.
The risk of severe weather remains low but non-zero. Heat and storm chances continue through Saturday evening, with a potential cooldown and clearing trend beginning Sunday.
Five-Day Forecast for Chicago, IL:
- Wednesday: Scattered PM storms, high 81–91°F, low 64–74°F
- Thursday: Isolated PM storms, high 88–92°F, low 69–73°F
- Friday: Storms possible late, high 86–91°F, low 67–72°F
- Saturday: PM storms near lake, high 88–91°F, low 68–73°F
- Sunday: Drying trend, slightly cooler, high 82–87°F (estimated)
