The first fall freeze, with lows of 32 degrees or colder, typically occurs during the first half of October in central Illinois. Click here to monitor the occurrence of this year's first freeze. (click image to enlarge)
The first systematized and synchronous weather observations were taken at 24 stations across the U.S. at 7:35 am. These observations were transmitted via telegraph to Washington DC for plotting on a national weather map. The Army Signal Service was assigned the responsibility for taking these observations.
Despite being about halfway into fall, temperatures across central Illinois rose into the 80's, establishing record high temperatures for November. Pana reported a high of 84 degrees, with 83 in Springfield and Decatur, 81 in Peoria, and 80 in Champaign.