No human could really have any sense that our climate is changing. And that's part of the problem. Let's presume the models/records are about right and we have warmed 1.1°C and would warm some more. Stipulate that. None of us would detect that with any confidence without rather precise measurements and records. We might think it's somewhat warmer than I recall as a kid, maybe, or that the local glacier has receded. I'm guess something like 3°C warming in 50 years would be noticeable to most of us, if we lived in the same area over that time.
Does anyone here think their local climate has warmed in their life time? I lived here in the 60s and I THINK maybe we had more snow back then, maybe. I've been here five years and we've had one "real" snow and a few where the ground was barely covered. And maybe my memory is faulty. We used to have bad ice storms fairly often.
Is summer hotter here? I don't think so, it's quite humid today though, 65% RH and 87°F, which is worse than "typical" (humidity).
I know the Swiss et al. point to glacial recessions as evidence, and maybe that would be a sign to those living there, it can also reflect a drought. Otherwise, we have to rely on various measurements of this and that.