Full forecast details at the WGN Weather Center
Monday forecast: Chance of early showers and thunderstorms, mostly up north. Partly sunny skies by the afternoon. Highs in the low 80s, near 80 by the Lake.
Extended outlook: Hazy sunshine on Tuesday with warmth continuing as temperatures approach 90 in the afternoon. Cooler and more comfortable temperatures are expected by Wednesday and Thursday before another warm-up by next weekend with a chance of showers and thunderstorms.