The countdown to Lollapalooza 2025 is on, and one thing’s clear: the weather gods are on our side. The latest detailed forecast for the festival weekend, running July 31 through August 3 in Chicago’s Grant Park, promises near-perfect conditions—think mostly sunny to partly cloudy skies with mild temperatures holding steady in the mid-70s to high 70s.
Crucially, the forecast shows no signs of rain or storms during the entire weekend, a welcome relief that sets the stage for uninterrupted sets, great vibes, and pristine sound quality boosted by comfortable humidity levels.
That said, be prepared for very high UV levels, with indices hitting 9 to 10 daily. Sunscreen and hydration are festival essentials this year to dodge sunburn and stay energized through long days and late nights.
The Lollapalooza community on Reddit is buzzing with excitement, with many calling the original weather poster a “legend” and trusting this forecast over any app out there. Fans new and returning are hyped, knowing their Lolla weekend will be sun-drenched and vibe-filled from start to finish.
Chicago Weather Snapshot for Lolla Weekend
- Wednesday, July 30: Variable cloudiness, a few showers, and a heavy thunderstorm possible. Low 68°F / High 78°F. A humid and stormy day with potential flash flooding and damaging winds—perfect day to get prepped indoors.
- Thursday, July 31: Clouds giving way to sun, breezy and less humid. Low 66°F / High 74°F. Kicks off the festival weekend on a refreshing note.
- Friday, August 1: Delightful with plenty of sunshine. Low 65°F / High 75°F. Ideal weather for outdoor sets and good times.
- Saturday, August 2: Continued sunshine and warm temps. Low 66°F / High 78°F. Another stellar day on grant park grounds.
All signs point to an outstanding Lollapalooza 2025 experience. Pack your shades, slather on sunscreen, drink plenty of water, and get ready to soak up the music and sun!
Source: r/lollapalooza