CHICAGO -- Warm and humid with afternoon highs reaching the lower/middle 80s.
Southeast winds 8-15 mph keep readings cooler along the Illinois lake shore.
Sporadic thunderstorms impact 50-60 percent of the area but also many rain-free hours.
Breezy warm and humid overnight with a thunderstorm or two possible.
Lows hold in the middle 60s.
Go to Chicago Weather Center for more on the forecast.