And, this extreme weather can be difficult for pets.
The animal shelter in St. Joseph is doing everything it can to protect dogs and cats from heat-related problems.
They're using air conditioning, fans, and plenty of water to keep the animals cool and hydrated.
Even with more than 50 cats and dogs at the shelter right now, staff members say they've budgeted for the extra care.
"We always expect a little bit more um in the summer months just because you know we do have to keep it cooler for these animals. Especially on days like these, where it's so extremely hot," said shelter humane educator, Jenna Anthony.
Anthony adds that different types of dogs and cats can handle different amounts of heat. The most important tip is to provide plenty of water and shade if your pet is outside. And, never leave an animal in the car, even if you're only going to be away for a few minutes.
Anthony says the number of calls have increased to the shelter about pets being left outside without water or left in cars with the windows rolled up.
Temperatures are expected to climb into the 90s again Tuesday, but cooler weather is expected by the end of the week.