Weather In Chicago In December 2025. Illinois โ warmer than normal temperatures and colder than normal temperatures have an equal chance of happening this winter in illinois, according to a new. Weather.com brings you the most accurate monthly weather forecast for chicago, il with average/record and high/low temperatures, precipitation and more.
Expect most of the snow to fall in late december and carry on through early february. Daily horoscope for december 12, 2024.