We have to work outside in colder weather than your Texas norms, I have worked in minus temperatures more than a few times, though I now have a rule that if it's not getting to twenty degrees as a high that day, I'm not going to work outside.
You figure out how to work with thin gloves and good clothes or you get frostbite, it's that simple. I never cared for it, but figured out how to handle it, what I don't understand is how you work in the south in the summer when it's close to one hundred degrees for months. I HATE working in that kind of weather.
:-)
We've tried to find thin gloves that will keep our hands warm while still allowing us the sense of touch we need to do the job, but I've never found anything that works. If I pounded nails for a living I don't think I'd have any problem finding adequate cold weather gear.
As to the Texas heat, yeah, it can really separate the men from the boys. I'm originally from Southern California where the summertime highs can easily reach 100 to 115 degrees, so I know what heat is about. But for some reason, the Texas heat is 'different'. I don't think I've seen it go over 108 here, but it can feel more like 120.
To deal with it, I take sea salt tablets, drink tons of water, and wear a big western hat. Long sleeves also help, but that seems counter-intuitive to a SoCal boy :-)