Historical weather data, all-time temperature records, and monthly climate averages for Chicago Lawn, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Chicago Lawn runs mild but unpredictable — the average high is 55° with a low of 37°, but this date has seen everything from a balmy 78° in 2021 to a bitter 24° in 2018. There's a 36% chance of rain today, though snow is essentially off the table.
Chicago Lawn earns its Midwest reputation the hard way: a scorching 104° in July 1999 and a brutal -22° in January 2019 represent a 126-degree swing between extremes. A single October day in 2017 dumped 5.2 inches of rain, and December 2000 buried the neighborhood under 14.3 inches of snow.
Summer is the sweet spot — highs peak around 85-86° in mid-July and stay above 80° from June through August. If you're avoiding the cold, steer clear of January, when highs barely crack 33°. May is the wettest month to watch, with the rainiest stretch of the year falling in the second week.