A Wet April and Record-Warm January-April in Illinois, Illinois State Water Survey

ISWS Press Release

For Immediate Release May 2, 2017
A Wet April and Record-Warm January-April in Illinois
Jim Angel, Ph.D. - (217) 333-0729, jimangel@illinois.edu
Lisa Sheppard - (217) 244-7270, sheppard@illinois.edu

CHAMPAIGN, Ill. - The statewide average precipitation for April in Illinois was 7.01 inches, 3.23 inches above normal and the second wettest April on record, according to Illinois State Climatologist Jim Angel at the University of Illinois’ Illinois State Water Survey.


Three of the top five wettest Aprils since the late 1800s have been since 2011, indicating a wetter trend in recent years.

The largest monthly precipitation total for April in Illinois was in Carbondale with 14.41 inches. Several other sites in southern Illinois had similar amounts, including Bush (Williamson County) with 13.63 inches, West Frankfort (Franklin County) with 13.35 inches, Kaskaskia (Randolph County) with 13.34 inches, and Murphysboro (Jackson County) with 13.02 inches.

The statewide average temperature for April was 56.4 degrees, 3.8 degrees above average and the 11th warmest April on record. The warmest reading during April was 89 degrees at Kaskaskia on April 20. The coldest reading for the month was 19 degrees at Morrison on April 10.

The January–April period was the warmest on record with a statewide average temperature of 44.5 degrees, 5.4 degrees above normal.


The Illinois State Water Survey at the University of Illinois at Urbana-Champaign, a division of the Prairie Research Institute, is the primary agency in Illinois concerned with water and atmospheric resources.

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