Just ahead of the official snowbird season, South Florida is gearing up for a cold front. Accuweather Senior Meteorologist Dan Pydynowski says you will start to feel the effects tonight. He says you can thank a cold front blanketing the entire Eastern U-S for the dip. Highs are expected to be in the low 70's Friday, mid 70's Saturday and upper 70's Sunday. Temperatures return to the lower 80's with lows in the 60's by Monday.