There is NO doubt the weather can be brutal, especially where you live. I've never had to do physical work in your region, but I will say some of the most demanding work I've ever done was right here in central Illinois during the hottest weather....hoisting fast moving hay bales into position in the hayloft. Especially those bales that were "baled" with a bit of moisture. Very heavy, dense, scratchy and tough to lift into position for a scrawny 12 year old. Actually, my dad called it hay mow...seems regionally it can be called that or hayloft. Same thing. Top of the barn where it's freaking hot as hell.