Southern Illinois
The normal high temperature in July is 90 °F (32 °C). The normal low temperature in January is 21 °F (−6 °C). This, though, varies between one year and another. Both  and  temperatures can be seen on an average 2 or 3 days per year. The official record low is  on February 2, 1884 in Harrisburg. The region's record high is  on July 14, 1954 in East St. Louis.