In some States the Utility Company cannot shut off your electricity as long as the temperature is 95 F or above.
Some States have a hot weather rule which prohibits the Utility company from shutting off electric services during extreme heat so as to prevent heat related deaths and illnesses.
Not all states have this rule so you'd have to check your states laws to be sure.
Either way make sure you contact your electric utility and work out payment arrangements with the utility company.
You may also qualify for Utility Bill assistance so check with the Salvation Army or other charities and even churches that may help keep your electricity on.