It can be 95 more than 6 months of the year where I live - that's two 3-mo deliveries that might get over heated in my mailbox or on the front porch - the porch has direct sunlight on it 80% of the day, so something sitting there for hours would get WAY hotter than the ambient temp. I've felt it with bottles of supplements delivered to the porch that sat in the sun for hours - when I take the box inside to put the bottles away they're noticeably hot to the touch.