Cold subsides, but a frost factor exists into this coming week

Milwaukee (CBS 58)--It seems like we have a few things to talk about in this forecast.  First, look for showers later Saturday evening into early Sunday morning with a cold front.  Then an upper level system could give us more showers Sunday afternoon into the evening. 

Behind that weather maker, the coldest air of the season could arrive for a bit.  Look for the potential of widespread frost Monday morning with lows around 30 for many of us. 

The cold doesn't persist for too long.  Look for a slow and methodical warm up by later in the week.  Plus the shower chances exist for Tuesday and into the weekend as well.  I don't see another real cold blast coming at least in the next week and a half.