At least 42 people have died in a heatwave across a number of US states as the region braces itself for severe storms in the wake of the heat.
In one case, a four-month-old girl died after being left in a car for "an extended period" outside her home in Indiana.
A 16-month-old girl was hospitalised in suburban Indianapolis after being found trapped in a car.
Deaths have also been reported by authorities in Illinois, Maryland, Ohio, Pennsylvania, Tennessee and Wisconsin.
The heat caused highways to buckle in Illinois and Wisconsin, officials said. In Maryland, investigators said heat likely caused rails to kink and led a commuter train to partially derail Friday.
No one was injured.
Even the beach offered no respite. Atlantic City, New Jersey, home of the famed boardwalk, set a temperature record on Saturday of 38F (100F).
