Historical weather data, all-time temperature records, and monthly climate averages for South Chicago, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in South Chicago swings wide — this date has seen everything from a balmy 78° in 2021 to a bitter 24° in 2018. On average, expect a cool spring afternoon around 55° with a low near 37°. There's roughly a 1-in-3 chance of rain, but snow is off the table.
South Chicago doesn't mess around at the extremes — the mercury has hit 104° in the dead of summer and plunged to -22° in January 2019, a 126-degree swing in the record books. The wettest single day dropped 5.2 inches in October 2017, and a December 2000 storm buried the area under 14.3 inches of snow.
Summer is the sweet spot, with highs peaking around 85-86° in mid-July before gradually easing through fall. January is the deep freeze, with average highs barely cracking 30°. If you're trying to dodge rain, avoid early May — the week of May 7-13 is the wettest of the year, averaging over an inch of precipitation.