Humans might be able to weather that chaos with our shelters but the plants and animals are having havoc wreaked on them with wild temperature swings like that. Especially when you have swings going from 60s to below freezing and back. I already saw certain trees by me start budding twice as they reacted to the warm weather with thinking it’s spring. They’re not dead yet but they wasted a large amount of energy on failed leaf growth that’s made them unhealthy. Then theirs the insects whose life cycles typically require storing honey and going into a low energy state or storing eggs that hatch come the warm weather. If those get totally wiped out by wild weather swings we’ll see several tropic layers of species die off as they are supported by the energy from feeding off those insects.