Historical weather data, all-time temperature records, and monthly climate averages for McKinley Park, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in McKinley Park typically lands in that awkward spring in-between, with highs averaging 55° and lows around 37°. The date has swung wildly in the past — a balmy 78° in 2021, a bitter 24° in 2018 — so don't put the layers away just yet. There's about a 1-in-3 chance of rain, but snow is off the table.
McKinley Park has seen the full extremes of Chicago-area weather, from a scorching 104° in July 1999 to a brutal -22° in January 2019 — a 126-degree range that tells you everything about this climate. A single October storm in 2017 dumped 5.2 inches of rain, and December 2000 brought 14.3 inches of snow in one day.
Summer is the sweet spot here, with the warmest week of the year running July 16–22 at an average high of 86°. January is the depth of winter, with 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.