Illinois’ diverse climate is one of its biggest assets. Illinois is home to rolling hills, spectacular bluffs, flat prairies, and vast cornfields. Whatever setting you’re looking for, Illinois has it.

Illinois also benefits from truly experiencing every season. The sun shines brightly in the summer and snow falls in winter. Spring and fall are particularly beautiful as flowers bloom in April and leaves turn in October.  

Below you will find an climate overview for every region of Illinois:

Chicago Weather Summary
Chicago Sunrise/Sunset Information
Central Illinois Weather Summary
Northern Illinois Weather Summary
Southern Illinois Weather Summary
Western Illinois Weather Summary