Our highs are frequently over 100^o, last summer hitting 110 several times. If you must be out in it, the parasol is essential (and sunglasses and a ballcap with a bill.)

If I'm working outyard I have a hat with a scarf attached to the back that tucks into the broad brim when not in use. I often will simply place a bandana over the top of my head to hang down around my neck and sides of my face and hold it in place with a snug billed ballcap. What did we ever do before ballcaps were invented?