Historical weather data, all-time temperature records, and monthly climate averages for Evergreen Park, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th sits right in the thick of Chicago's shoulder season — expect a high near 54° and a low around 37°, with a coin-flip-ish 43% chance of rain. The date has a wild range in the books: a balmy 85° back in 1988 and a bitter 18° low in 1979. Snow is unlikely but not impossible, clocking in at a 7% chance.
Evergreen Park has seen some truly brutal extremes over its nearly century-long record. The mercury hit a scorching 107° on June 1, 1934, and bottomed out at -25° on January 20, 1985 — a 132-degree swing between the all-time high and low. On the wet side, a single July day in 1957 dumped 6.16 inches of rain, and a January 1999 storm buried the area under 17.6 inches of snow.
Summer is the star here — the week of July 9–15 averages a high of 85°, and the surrounding months stay comfortably warm from May through September. Winter is a different story, with January highs scraping just 31° during the coldest stretch of the year. If you're watching rainfall, plan around mid-to-late July, when weekly precipitation averages 1.26 inches.