With all this heat, I’ve double checked my refrigerator & freezer to make sure the coils are vacuumed, there’s plenty of space for air to circulate in back, and the compartments are full. A full refrigerator / freezer uses less energy (and will stay cold longer if the electricity goes out. Cold things keep cold things cool; more cold things keep cold things cool longer. 
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So now I am making a concerted effort to make large crockpot or soup batches and freeze labeled and well sealed individual portions, or take-and-share portions. It will help me avoid cooking on the hottest days, too.
I fill well-rinsed bottles ¾ full with water and then freeze. Plus, this gives me extra “disaster” water, ice water for picnics, and ice blocks for my cooler. If I think they’ll sit, I date the bottle, so I know to change it in a year.
Any old water container works when I need to fill up an empty frig a bit before leaving on a trip.
