CHICAGO (CBS)-- This week overall will have a much cooler feel with below average temperatures. 

A cloudy and cooler day is ahead Monday with temperatures in the lower 50s with chilly northwest breezes.   

A Freeze Warning has been posted for portions of north central and northeast Illinois from midnight Monday night to 7 a.m. Tuesday.  

Temperatures stay in the 50s Tuesday. 

The end of the week brings warmer temperatures.