Swathes of the USA have been very warm for most of 2021. Denver in Colorado (1673m asl) hasn't seen any measurable snow so far.Never happened before in its climatic history. As of December 2nd, people are still wearing shorts and tshirts during these warm afternoon days with >23C https://t.co/C2pfiGGdGT

— Extreme Temperatures Around The World (@extremetemps) December 2, 2021