I have left my gear in the car until the past couple of weeks, when the temperatures have been up around 100. Now I'm unloading and keeping everything in the garage except the keyboard. It comes into the house.
My garage is a little hot, but at least it's in the shade most of the day.
You should have been with us on the golf course yesterday Bill! That 105 with the heat index was up around 112!
DonM