 Just west of Effingham on Interstate 70 there is a white cross; 35,000 vehicles are estimated to pass the site each day.It is one of the world's tallest crosses, and took over of steel to erect.In recent years, average temperatures in the county seat of Effingham have ranged from a low of in January to a high of in July, although a record low of was recorded in January 1915 and a record high of was recorded in July 1954.