Top Ten Warmest Years in Illinois
Here are the top ten warmest years in Illinois based on the 1895-2016 record. Departure is defined as the difference from the 1901-2000 based period of 51.6 degrees. You will notice a lot of ties in the top ten list, especially #8.
| Rank | Year | Annual Average Temperature (F) | Departure from Normal (F) |
|---|---|---|---|
| 1 | 2012 | 55.8 | 4.2 |
| 2 | 1998 | 55.2 | 3.6 |
| 3 | 1921 | 55.0 | 3.4 |
| 4 | 1931 | 54.9 | 3.3 |
| 5 | 2016 | 54.7 | 3.1 |
| 6 | 1938, 1987 | 54.1 | 2.5 |
| 7 | 2006 | 54.0 | 2.4 |
| 8 | 1946, 1953, 1954, 1991, 2005, 2007 | 53.7 | 2.1 |
| 9 | 1933, 1990 | 53.6 | 2.0 |
| 10 | 1999 | 53.5 | 1.9 |
These data are available at the National Center for Environmental Information extracted from the National Climatic Data Center records at this location on their website.