December 2021 was exceptionally warm
January 12, 2022
Provisional data show December was among the top five warmest on record in Illinois, with no snow on Christmas, according to Illinois State Climatologist Trent Ford at the University of Illinois’ Illinois State Water Survey. The exact ranking of December 2021 will be confirmed later this month.
The statewide average December temperature was 39.4 degrees, 9.6 degrees above the 1991–2020 average. This December was the warmest on record in Carbondale, the second warmest on record in Quincy, the third warmest on record in St. Louis, Springfield, and Peoria, the fourth warmest in Rockford...