National Weather Service United States Department of Commerce
...Mild Fall Breaks Several Latest First Freeze Records...

A weather pattern featuring above normal temperatures this fall,
broke the latest first freeze at many sites with long-
term temperature records across central and southeast Illinois.
Some sites touched the freezing mark back on October 22, but many
sites did not reach freezing until November 10-12.

Site             Historic Latest First Freeze     2016
------------     ----------------------------     -----------------
Charleston       11/11 (2011)                     Low of 32 on 10/22
Danville         10/30 (2014)                     New record in 2016 (low of 30 on 11/10)  
Decatur          11/11 (2011)                     New record in 2016 (low of 29 on 11/12)
Galesburg        11/08 (1956)                     Low of 32 on 10/22
Lincoln          11/08 (1956)                     Low of 31 on 10/22 
Minonk           11/07 (1956)                     New record in 2016 (low of 32 on 11/10) 
Normal           11/08 (1956)                     Low of 32 on 10/22
Olney            11/13 (1915)                     Low of 31 on 11/10
Paris            11/15 (1970)                     Low of 28 on 11/12      
Peoria           11/08 (1956)                     New record in 2016 (low of 30 on 11/12)
Springfield*     11/08 (1956)                     New record in 2016 (low of 29 on 11/12)
Urbana           11/13 (1975)                     Low of 30 on 11/12

* Springfield's official measurement site has moved a few times
  since the late 1800s. Data consistent with the current
  observation site at the airport (since late 1947) is shown
  above.