The climate has naturally fluctuated above and below current levels many times over the past few hundred million years, and even several times within the last few hundred thousand years. It has also changed at greater rates than seen at the present time. Despite being completely incorrect, it seems to be popular belief that without humans there would be no climate change or that what's happening now is without precedent. Yes, sometimes prehistoric climate change wiped species out, often it caused new species to come into existence, often one followed the other. With or without humans this was always going to keep on happening. We couldn't stop it if we tried, even if we all disappeared or had never existed. The climate changes, it is supposed to. CO2 levels have also been higher than at present multiple times in natural prehistory.
At most, humans have caused the climate to zig at a time it would otherwise have zagged, but that's it, and we may not have even done that. What the future holds is another story. Perhaps anthropogenic climate change will push things to unprecedented levels, but it hasn't happened yet and it seems unlikely to.
When people get excited about 'hottest month on record' I think they're forgetting that we only recently (less than 200 years ago) started keeping those records. Of course we're going to be breaking records all the time! If you started keeping climate records at any point over the last few hundred million years you would continually break the records for the first few hundred years, and fairly often break them over the next few thousand. If we had the hottest month since the climate began, sure, I'd be freaking out, but months this hot have routinely been occurring since hundreds of millions of years before the concept of 'month' or 'record' was even devised.