 In recent years, average temperatures in the county seat of Cairo have ranged from a low of in January to a high of in July, although a record low of was recorded in January 1985 and a record high of was recorded in June 1954.Average monthly precipitation ranged from in September to in May.The Tamms Correctional Center, a now shuttered super-maximum correctional facility operated by the Illinois Department of Corrections, was located in Tamms, as was the State of Illinois execution chamber.