trend | Illinois State Climatologist| Prairie Research Institute

Illinois State Water Survey Illinois State Climatologist

April Temperatures in Illinois Warm Over the Last Century

Published May 7, 2015 by Jim Angel

According to the National Centers for Environmental Information (NCEI), the average April temperature in Illinois has warmed by 2 degrees over the last century. In addition, the most recent decade of 2006-2015 was the warmest set of Aprils on record. Statewide records go back to 1895. Here are the statewide average temperatures for April in […]

Sunny and Dry Start to October

Published October 11, 2011 by Jim Angel

The first 10 days of October have been warm, dry, and sunny in Illinois. The statewide average temperature is 61.3 degrees, 3.8 degrees above average. The statewide average precipitation is zero. Only a handful of sites in far western Illinois have reported anything. The highest total so far in the state was 0.44 inches from […]