Historical weather data, all-time temperature records, and monthly climate averages for Mokena, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Mokena runs cool, with an average high of 53° and a low that still dips to freezing territory at 33°. The date has swung wildly over the years — from a balmy 72° in 1956 to a bitter 23° low back in 1954. Rain is possible (36% chance), but snow is mostly behind you at just 3%.
Mokena's weather history is full of extremes — the thermometer has hit 103° in July and cratered to -20° in January, both in the same remarkable year of 1897. A single storm on June 11, 1926 dumped 6.86 inches of rain, and a November surprise in 1896 buried the area under 10.5 inches of snow in one day.
Summer is the sweet spot here, with late June through early July averaging highs in the mid-to-upper 80s — peaking around 87° the last week of June. If you're cold-averse, avoid late January and early February, when highs average just 30°. June is the wettest stretch of the year, so pack an umbrella if you're visiting then.