The biological impacts of anthropogenic climate change have been noted regionally since the 1950’s in peer reviewed research in Europe and North Africa, then laws changed, the impacts changed, but human impacts still massively impacted climate, spreading to a global rather than regional impact.
Species don’t adapt as quickly as the change in climate, and critical species are dying out, while “problem species” as Stipple notes, are increasing dramatically. Insects don’t die out and overwinter successfully, and our forest die. A tree takes at least half a century to be truly marketable as timber with any quality, but our forests, through over harvesting, bug kill, storms, or fires, aren’t making it that far.
It isn’t about any “perfect weather”, it’s that climate change is killing quicker, through floods, storms, acidification, and drought, than species can react to the loss of what they depended upon.
It has long been noted by scientists that when humans are gone, the cockroach will still be around and happily surviving after millions of years, no “big brain”, but actually more adaptable where it counts.