Experts say the heat-up isn't that unusual.
"Late July to the beginning of August is when the numbers say we have our hottest days," ABC30 Chief Meteorologist Kevin Musso said.
Right now, the hottest day will be Thursday, August 7, with a forecasted high of 105 degrees.
"Drink plenty of water; check the timing on where you're going to be, plan ahead -- even take an extra water for those who might not have it," Musso said.
From heat safety to water safety.
The Fresno County Sheriff's Office reports a total of four drownings in Fresno County this summer alone, including two kayakers.
"It's really a numbers game. As long as we have heat, we have water, and we have a population that wants to go out. We know there's going to be risks," Fresno County Sheriff's Office spokesperson Tony Botti said.
Those risks are increasing for non-swimmers, prompting Fresno County Sheriff's Deputies to continue their boat patrols on natural waterways.
Deputies will be on Shaver and Pine Flat Lakes as well as the Kings River Friday through Monday, all summer long.
"That's where the panic sets in; they can't swim to stay above the surface and then that's where we see tragedy happen," Botti said.
The most recent drowning unfolding in the Merced River on Thursday evening.
"Our understanding is the subject potentially went in because he saw some children getting a little too far out," Merced County Sheriff Captain Aaron Rosenberg said.
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According to Merced County Sheriff's deputies, the victim was wearing blue jeans and heavy boots, making it more difficult for him to return to shore.
Deputies dispelling a common misconception when it comes to local waterways.
"The conditions of the water can vary. What may look very calm on the surface, may be very swift underneath," Captain Rosenberg said.
In Thursday's drowning, deputies say the victim became caught up in the current.
"We tell people not to fight the current and go with the current and swim to shore because as soon as you fight the current, you begin to tire yourself very quickly," Captain Rosenberg said.
The best defense against natural waterways...
"...is you and using common sense to not get yourself into a position where you're fighting for your life," Botti said.
Another defense against waterways is investing in a U.S. Coast Guard-approved life vest and avoiding rivers and lakes when you don't know how to swim.
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