With more winter weather in the forecast, Jefferson County Public Schools is canceling all school activities—including athletics—this weekend.Snow is expected in southern Indiana after midnight, reaching north central Kentucky early Saturday morning, the National Weather Service said.Louisville has a 30-percent chance of snow—accumulating to less than an inch— mostly after 3 a.m. Saturday, the weather service said. And the chance of snow is forecast to increase through the day Saturday, with a chance remaining to early Sunday afternoon.And it'll stay cold, with high temperatures reaching the mid-30s.JCPScanceled classes for Friday because after snow Thursday night followed by temperatures in the low teens this morning. The make-up day will be Feb. 25, a Monday.