"Repeated downpours" with embedded thunderstorms are in the Chicago area forecast for Friday and into Saturday, just as hundreds of thousands of concertgoers will be in Grant Park for days two and three of Lollapalooza for 2026. Here's what lolla-goers should know about the weather ahead. Tap the 🔗 in bio for details. #lollapalooza #chicago #chicagoweather #lollapalooza2026