After what should be a nice Father’s Day today, more showers and thunderstorms are likely to greet the last full week of spring. Today’s forecast is for mostly sunny skies and a high around 85, perfect for cookouts, a ballgame or a day on the lake. The chance of thunderstorms is about 20 percent during the day, but will increase overnight, with a greater chance of a pop-up storm after 11 p.m. The chance of storms increases to start the work week, 60 percent Monday and Tuesday, with some showers likely in most areas.