Historical weather data, all-time temperature records, and monthly climate averages for Tinley Park, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Tinley Park lands right in the unpredictable heart of spring — historically, highs average a mild 55° but have swung from a brutal 18° in 1982 all the way to 80° in 2012. There's about a 43% chance of rain, though snow is nearly off the table at just 1%.
Tinley Park earns its Midwest stripes with a temperature range that would make your head spin: 103° on August 2, 1988 and -27° on January 20, 1985 — a jaw-dropping 130-degree spread. Storms hit hard here too, with a single day delivering 6.55 inches of rain in July 1996 and a February 2011 snowstorm dumping 19 inches in one shot.
Summer is the main event, with the week of July 16–22 peaking at an average high of 85° and carrying the year's heaviest rainfall — pack an umbrella if you're visiting then. Winters are legitimately cold, with January highs barely cracking 30° and a two-week stretch in mid-January averaging just 29°. Spring and fall offer the sweetest windows, with May and September both sitting in the comfortable 70s.