Travis, it is often mid-90's and pretty humid around here in the summer. For field work we try to start very early, drink lots of water, and quit around 1:00 or 2:00. Urine color is a good indication, or "Pee in three" is a saying; if you haven't urinated in three hours, you are dehydrated. Don't let yourself get heat stressed. It'll affect you for a week.
i am supposed to urinate every three hours? winter or summer, i average about 3 per day. Hmm, perhaps i am always dehydrated. we drink quite a lot, and sweat most of it out. i will drink more, and see how that works.
we usually start work around 6:30AM, but lately 1P - 2P is much to long in the heat. we strive for quiting around noon, but lately, sooner.
i wonder if my kidney issues are why i sweat more, and pee less. i will bring that up with my doc, next visit.
but yes, good tips. i will work on drinking more. all that's left on this job is re-installing a storm door (we replaced the main door), and it is wrapped up. maybe a couple, or three hours. then back to the shop to clean out the job trailer, and equip for the next project.