(Champaign, IL) -- If you're looking for summertime fun this weekend check out the Champaign County Fair. A carnival opens along the Midway at 5 this evening while tonight's feature event is a monster truck rally at 7. Tomorrow is "Youth Day" at the fair and features tractor pulls at 11 a.m. and again at 5 p.m. when the Illinois Championship Semi-Truck Pull takes center stage.