Bill:
A timely safety comment – Thanks.
My shop is 90 degrees now, and will be for another month; going down to 35 degrees during the winter. During the summer, I drink about a gallon of water every four hours. The alternative is to stay out of the shop for two-to-three months a year (winter and summer, combined), and I’m getting to where I don’t want to give-up the amount of time.

The Summer heat has accompanying issues – salty-sweating on your work, on your cast iron jointer / bandsaw / table saw tops – I have surface-rust spots all over my cast iron tables; and using a router or chisel when your heat-stressed is dangerous. I use wrist and head bands, and keep a towel tucked-in to my waistband.
Again, thanks for broaching the subject.