When I was stationed in the Central Valley of California, I worked a second job in a warehouse. Even though the temperature in the summertime would climb into triple digits on occasion, the only time I ever became bathed in sweat was working inside a truck trailer where there was little air flow. The low humidity provided quick evaporation. And as JIB said, the shade of a light pole would provide relief. You see a lot of swamp coolers there because they can be effective until it gets up in the 90s. I'll take dry heat any day over humid heat.

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