It will feel more like winter to begin the weekend throughout south central Iowa. A freeze warning has been issued Saturday morning, as lows are expected to dip below freezing. Winds gusting up to 30 miles per hour will cause wind chill values to dip to 20 degrees. This will mark the end of the growing season in most of the state. For tonight’s football games, fans will want to bundle up — as gusty winds up to 40 miles per hour are possible, with wind chills dropping below freezing by kickoff.