Saturday night Forecast: Partly cloudy to mostly clear. Frosty in some areas. S 5-10 mph
Low 32

Full forecast details and more at the WGN Weather Center blog

Sunday Forecast: Mostly sunny & breezy with increasing afternoon clouds & milder
High 57.

Extended outlook calls for warmer & wetter weather. Monday has about a 30% chance of showers with highs in the 60s. Even warmer on Tue/Wed to near 70 with showers and thunderstorms likely.