Historical weather data, all-time temperature records, and monthly climate averages for Brookfield, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Brookfield runs cool but variable — historically, highs land around 54° with lows near 37°. The date has swung wildly, from a balmy 76° in 2021 to a bitter 27° low in 2018, so don't put the layers away just yet. There's also a 43% chance of rain today, though snow is essentially off the table.
Brookfield's weather has real teeth at both ends of the thermometer — the mercury has hit 104° in the summer of 1999 and cratered to -22° during the brutal January 2019 cold snap. A single October day in 2017 dumped 5.2 inches of rain, and December 2000 buried the suburb under 14.3 inches of snow in one storm.
Summer is the main event here, with highs topping out around 85-86° in mid-July and staying warm through August. If you're avoiding the cold, steer clear of mid-January, when average highs barely crack 30°. May is the wettest stretch of the year, so pack an umbrella if you're visiting in spring.