I live in Austin, TX. It has been 105-ish every day this week, but the humidity is 30% during the hot part of the day. My office has a ceiling fan which is on low most of the time. Some people will not believe this, but I have the minisplit set at 80F and when the sun sets I turn off the fan because I start to get cold. When I leave my office (which is attached to the garage) and walk the 40 feet into my house through the 98F evening air I often feel: ah, that warmth feels good.

To summarize: it is one part adaptation to the heat, one part low humidity, and one part air circulation.

I live in a fairly humid area, but the AC helps to drain the moisture out of the air so it's still livable. Ceiling fans on a low setting can also help you feel comfortable, especially if you don't have the sun shining on you.

Yeah we live in the foothills in Colorado at 7700 feet elevation. Typical summer day is 85 degrees and 20% humidity and we don’t have AC.

It gets warm but fans are enough and I have a portable swamp cooler for when it gets really hot.