April conditions in Illinois featured colder weather and frequent rainfall

April was colder than normal in Illinois, with freezing temperatures occurring into mid-month and as far south as St. Louis Metro East, according to Illinois State Climatologist Trent Ford at the University of Illinois’ Illinois State Water Survey. Rainfall in April was frequent but averaged near normal statewide for the month.

The preliminary statewide average April temperature was 49.6 degrees, 2.7 degrees below the 1991–2020 average. April average temperatures ranged from the low 40s in northern Illinois to the mid-50s in southern Illinois, between 1 and 6 degrees below normal. The coldest...