The huge problems of climate change in prehistory are frequently invoked when discussing the peoples living in those times and how hard it was to adapt quickly. At the beginning of the Younger Dryas around 12,700 years ago, the temperature dropped 6 degrees in about 30 years in Europe. It may have dropped two degrees in a single year. People could not move south fast enough to survive.
Yet so far I can't help but notice that the catastrophes seem to have occurred because of rapid cooling or rapid drying. Increased warmth and increased moisture do not seem to be a problem (with at least one exception on the moisture, because of flooding).
Don't quote me. Someone may know better than I on this.