Illinois Weather Trivia for July 12th
- An intense heat wave affected much of the Midwest for a 4-day period beginning on this day. The worst effects of the heat were noted in the Chicago metropolitan area, where 583 people died from the heat. Temperatures across the area reached as high as 105 degrees, with heat index values peaking at 125 degrees. Electricity and water usage reached record levels, causing periodic outages.
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