A wintry chill’s back on the scene today.
The cold air’s return is to be one of finite length. Southwest winds are to strengthen Sunday, reintroducing mild Pacific air Sunday afternoon and night. The 40s these winds produce are to pale in comparison to the real warmth predicted for Monday. That’s when the year’s first 50+-degree temp is to occur, with high temps likely to reach 56 at O’Hare while approaching 60-degrees in some south suburban locations.
Get your full forecast at http://www.chicagoweathercenter.com