Based on preliminary data, the statewide average temperature for Illinois in April was 58.4 degrees, 6.2 degrees above normal and the warmest April on record. This beats the old record of 58.2 degrees set in 1955. Official statewide average temperature records go back to 1895. The warm temperatures in April were not unique to Illinois – the entire Midwest was much above normal.
April rainfall was 3.5 inches, just 0.3 inches below normal. Areas in western Illinois around received the most precipitation, over 5 inches in some locations. An observer in Matherville (Mercer County) reported 6.50 inches for the month.
Looking ahead into next week, after a chilly, but largely dry weekend, the next in the recent series of wet weather systems arrives later Monday and Tuesday.