How to stay cool with hot weather day and night?

I work outside in 100+ degrees quite often for my line of work. Wear light coloured clothing such as white or light grey. Drink plenty of fluids!!!! 

Sweating is the body's way of cooling itself. It can't cool itself down if you're dehydrated. If you wear a hat, place a small towel under the hat so that the towel can cover the back of your neck. This will keep the sun from burning your neck. Best of luck my friend!