California's rolling blackouts were not the result of any particularly extreme (for California!) weather. Similarly, hurricanes are not new to most of the hurricane-afflicted parts of the country. Wildfires have been a force in the US for a long time, and the West has experienced seasonal wildfires for decades.

The difference is the US doesn't generally build or maintain infrastructure in a fashion commensurate with the extant risks here (which are different than those of e.g. Germany). Obviously, it is possible to keep a grid running when it is extremely cold outside, see the Nordics and Russia, for example. The US just makes systematic choices not to build & maintain to that standard.